A pressure ring wire 2 comprises: an upper surface 4; a lower surface 6; a first side surface 8; a second side surface 10; and a rounded chamfer 12. The contour of the wire 2 in a plane perpendicular to the length direction of the wire has three circular arcs on its outer circumference. Coiling or similar processes are applied to the wire 2, and a pressure ring is formed as a result. The first side surface 8 corresponds to the outer peripheral surface of the pressure ring. The filtered center line waviness WCA of the first side surface 8 measured along the length direction is 3.0 μm or less. The maximum deviation Dif between the contour of the first side surface 8 and a virtual curve approximating the contour is 2.8 μm or less. The sum of the filtered center line waviness WCA and the maximum deviation Dif is 5.2 μm or less.
A pressure ring wire 2 has an upper surface 4, a lower surface 6, a first side surface 8, a second side surface 10, and a rounded chamfer 12. The wire 2 is coiled or the like to form a pressure ring. The first side surface 8 corresponds to the outer peripheral surface of the pressure ring. The filtered center line waviness WCA of the first side surface 8 measured along the length direction is 3.0 μm or less. The maximum deviation Dif between the contour of the first side surface 8 and a virtual curve approximating the contour is 3.0 μm or less. The sum of the filtered center line waviness WCA and the maximum deviation Dif is 5.5 μm or less.
This straight wire 2 for a medical treatment tool is a single wire-type wire. The wire 2 has undulations. The undulations have a height H of 3.0 μm or greater and a pitch P of 10.0-100.0 mm. The ratio (P/H) of the pitch P to the height H is 1500 or greater. The ratio (P/D) of the pitch P to the outer diameter D of the wire 2 is 70.0 or greater. The tensile strength of the wire 2 is 2000 MPa or greater.
An operation wire 10 has a single-wire structure. The operation wire 10 has a plurality of ridges 28 which are arranged along the circumferential direction. The outline of each of the ridges 28 in a cross section of the operation wire 10 protrudes outward, the cross section being taken perpendicular to the longitudinal direction of the wire. The curvature radius Rr of the outline is smaller than the radius Rw of a circumscribed circle of the cross section of the operation wire 10. Preferably, in the cross section, the number of the ridges 28 is 3 or more. Preferably, in the cross section, the ridges 28 are arranged symmetrically. Preferably, the operation wire 10 has a coating 34 on the surface thereof .
An oil ring wire (2) containing an alloy steel as a material. The alloy steel contains: 0.50 to 0.65% by mass C; 1.60 to 2.30% by mass Si; 0.60 to 1.10% by mass Mn; 0.75 to 1.15% by mass Cr; 0.18 to 0.45% by mass Ni; 0.05 to 0.15% by mass V; and 0.15% by mass or less Cu. In the oil ring wire 2, an area percentage of a carbide is 1.00% or less. Also disclosed is a method of producing the oil ring wire.
C21D 8/00 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
F16J 9/26 - Piston-rings, seats thereforRing sealings of similar construction in general characterised by the use of particular materials
An oil ring wire (2) contains an alloy steel as a material. The alloy steel contains: 0.50 to 0.65% by mass C; 1.60 to 2.30% by mass Si; 0.60 to 1.10% by mass Mn; 0.75 to 1.15% by mass Cr; 0.18 to 0.45% by mass Ni; 0.05 to 0.15% by mass V; 0.15% by mass or less Cu; and inevitable impurities. In the oil ring wire (2), an area percentage of a carbide is more than 6.0% and 10.0% or less. Also disclosed is a method of producing the oil ring wire.
C21D 1/18 - HardeningQuenching with or without subsequent tempering
C21D 8/00 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
A carbon nanotube composite wire 2 includes: a carbon nanotube 6; and a sintered layer 8 attached to a surface of the carbon nanotube 6. The sintered layer 8 includes a large number of silver flakes 14. These silver flakes 14 are bonded to each other by sintering. Flat surfaces 16 of silver flakes 14 partly overlap, or are partly in contact with, flat surfaces 16 of other adjacent silver flakes 14. An electrically conductive network is formed by these silver flakes 14 being adjacent to each other.
B22F 5/12 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of tubes or wires
B22F 7/04 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers with one or more layers not made from powder, e.g. made from solid metal
D06M 11/83 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metalsTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metal-generating compounds, e.g. metal carbonylsReduction of metal compounds on textiles
A metal powder is an ensemble of fine metal particles. The fine metal particles include fine layered metal particles (2). Each of the fine layered metal particles (2) includes a center layer (4), an upper middle layer (6), an upper end layer (8), a lower middle layer (10), and a lower end layer (12). Each of the layers is a flake. The flakes belong to the same crystal. There is a space S1 between the center layer (4) and the upper middle layer (6). There is a space S2 between the upper middle layer (6) and the upper end layer (8). There is a space S3 between the center layer (4) and the lower middle layer (10). There is a space S4 between the lower middle layer (10) and the lower end layer (12).
The present invention provides spring wire 2 that is a Co-Ni-Cr-Mo alloy. The alloy contains 25–45 mass% of Co, 25–40 mass% of Ni, 15–25 mass% of Cr, 5–15 mass% of Mo, 0.5–3.0 mass% of Fe, 0–2.0 mass% of Nb, 0–2.0 mass% of Ti, 0–0.5 mass% of Mn, 0–0.03 mass% of C, 0–0.10 mass% of Si, and unavoidable impurities. The spring wire 2 has a tensile strength TS of at least 2200 MPa, a 0.2% proof stress PS of at least 1800 MPa, and a proof stress ratio (PS/TS) of at least 0.75.
C22C 30/00 - Alloys containing less than 50% by weight of each constituent
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
A production method of a carbon nanotube yarn includes the steps of: (1) obtaining a web 40 including a large number of carbon nanotubes 36; (2) bringing a slider 24a into contact with the carbon nanotubes 36; and (3) moving the slider 24a in a direction to bundle the carbon nanotubes 36, the direction being inclined with respect to a direction in which the web 40 extends.
A plurality of CNTs are drawn out of VACNTs so as to be continuous in lines and are bundled into a thread shape, and a temporary thread bundled into a thread shape is temporarily wound on the first winder. The first winder is then rotated about an axis along a feeding direction of the temporary thread to twist the temporary thread while the temporary thread is fed from the first winder.
The material of an oil ring wire 2 is an alloy steel. The alloy steel includes 0.50-0.65 mass% C, 1.60-2.30 mass% Si, 0.60-1.10 mass% Mn, 0.75-1.15 mass% Cr, 0.18-0.45 mass% Ni, 0.05-0.15 mass% V, not more than 0.15 mass% Cu, and unavoidable impurities. An area ratio of carbides in the oil ring wire 2 is more than 6.0% and not more than 10.0%.
The material of an oil ring wire 2 is an alloy steel. The alloy steel contains 0.50-0.65 mass% of C, 1.60-2.30 mass% of Si, 0.60-1.10 mass% of Mn, 0.75-1.15 mass% of Cr, 0.18-0.45 mass% of Ni, 0.05-0.15 mass% of V, and 0.15 mass% or less of Cu. In the oil ring wire 2, the area percent of carbides is 1.00% or less.
This carbon nanotube composite wire 2 has a carbon nanotube 6 and a sintered layer 8 attaching to the surface of the carbon nanotube 6. The sintered layer 8 includes a number of silver flakes 14. These silver flakes 14 are combined together through sintering. A flat face 16 of a silver flake 14 partially overlaps or partially contacts a flat face 16 of adjacent another silver flake 14. As silver flakes 14 are adjacent to each other in such a manner, a conductive network is formed.
D06M 11/83 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metalsTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metal-generating compounds, e.g. metal carbonylsReduction of metal compounds on textiles
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
This metallic powder is an aggregation of a large number of fine metallic particles. The fine metallic particles contain fine laminated metallic particles 2. Each fine laminated metallic particle 2 has a center layer 4, an upper middle layer 6, an upper end layer 8, a lower middle layer 10, and a lower end layer 12. Each of said layers is a flake. The flakes are the same type of crystal. There is a space S1 between the center layer 4 and the upper middle layer 6. There is a space S2 between the upper middle layer 6 and the upper end layer 8. There is a space S3 between the center layer 4 and the lower middle layer 10. There is a space S4 between the lower middle layer 10 and the lower end layer 12.
B22F 9/24 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
H01B 1/00 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors
H01B 1/02 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of metals or alloys
H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
A wire winding device includes a lock jig including a pair of tip end portions configured to approach each other or separate from each other. A control portion of the wire winding device is configured to execute: a step of winding a wire onto a winding drum; and a step of making the lock jig sandwich a pulled-out part of the wire, inserting the lock jig into a clip, and opening the tip end portions of the lock jig against biasing force of the clip to open the clip.
B65H 54/12 - Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making packages of specified shapes or on specified types of bobbins, tubes, cores, or formers on flanged bobbins or spools
B21C 47/26 - Special arrangements with regard to simultaneous or subsequent treatment of the material
B65H 54/22 - Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling or fault-detecting of the running material, and replacing or removing of full or empty cores
B65H 65/00 - Securing material to cores or formers
B65H 75/28 - Arrangements for securing ends of material
21.
PRODUCTION METHOD FOR LONG OBJECT MADE FROM CARBON NANOTUBES
This production method for a long object comprising a plurality of carbon nanotubes comprises: (1) a step in which the carbon nanotubes are gradually drawn out from a first array to obtain a first web 10a; (2) a step in which a part of the first web 10a is brought into contact with a first holding tool 12a, and the first web 10a is held by said first holding tool 12a; (3) a step in which the carbon nanotubes are gradually drawn out from a second array to obtain a second web 10b; (4) a step in which a part of the second web 10b is brought into contact with a second holding tool 12b, and the second web 10b is held by said second holding tool 12b; and (5) a step in which, in a state in which the width direction of the first web 10a and the width direction of the second web 10b substantially correspond, an area of the first web 10a near the first holding tool 12a and an area of the second web 10b near the second holding tool 12b overlay each other to form a joint.
This carbon nanotube yarn manufacturing method includes: a step (1) for obtaining a web 40 including a large number of carbon nanotubes 36; a step (2) for causing a friction mover 24a to abut against the carbon nanotubes 36; and a step (3) for moving the friction mover 24a in a direction inclined with respect to the extension direction of the web 40 so as to bundle the carbon nanotubes 36.
A plurality of CNT 10 are drawn out from a VACNTs2 so as to be continuous in a linear shape and are bundled in a thread shape, and provisional spun thread 11 bundled in a thread shape is temporarily wound on a first winding body 12. The first winding body 12 is then rotated about an axis along the feeding direction of the provisional spun thread 11 while the provisional spun thread 11 is fed out from the first winding body 12, and the provisional spun thread 11 is twisted.
D02G 3/26 - Yarns or threads characterised by constructional features with characteristics dependent on the amount or direction of twist
H01B 1/04 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of carbon-silicon compounds, carbon, or silicon
H01B 5/08 - Several wires or the like stranded in the form of a rope
24.
Stretchable wiring sheet and stretchable touch sensor sheet
A stretchable contractible wiring sheet includes: stretchable contractible first elastomer sheet; stretchable contractible second elastomer sheet facing and bonded on the first elastomer sheet, and lead that has a transverse section having any cross-sectional shape selected from circular shape, elliptical shape, and track shape, and is plastically deformed in wavy shape periodically curving along longer direction, the lead being interposed between the first elastomer sheet and the second elastomer sheet in a manner that height direction of waves in wavy shape is along in-plane direction of facing surfaces of the first elastomer sheet and second elastomer sheet. The wiring sheet that can be produced easily at low costs, has high flexibility and durability, and undergoes small resistance value change along with stretching and contracting, and stretchable contractible touch sensor sheet.
G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
25.
METAL WIRE FOR RUBBER REINFORCEMENT, AND METHOD FOR MANUFACTURING METAL WIRE FOR RUBBER REINFORCEMENT
The present invention provides a feature with which it is possible to improve the strength characteristics of an adhesion interface between a metal wire for rubber reinforcement and rubber, and inhibit oxidative degradation of the rubber and improve the durability of the rubber. The present invention provides a metal wire 1 for rubber reinforcement in which a brass plating layer containing copper and zinc is provided on the surface thereof, wherein cobalt is contained in the surface layer of the brass plating layer 30b, and the cobalt concentration at the surface of the brass plating layer 30b is 3 to 7 atom% inclusive. The need to have the rubber contain cobalt in advance is thereby obviated, making it possible to inhibit rubber degradation due to oxidation of cobalt.
A hollow stranded wire (2) has a first layers (4) and second layers (6). The second layer is located outside the first layer. The first layer is formed by twisting eight first element wires (8) which are flat wires. The second layer is formed by twisting eight second element wires (10) which are flat wires. A ratio (Ww/Tw) of a width Ww to a thickness Tw of each flat wire is from 2 to 11. A twisting direction of the second element wires is opposite that of the first element wires. A twisting angle of each first element wire is not greater than 85°. A twisting angle of each second element wire is not greater than 85°. A ratio (D/T) of an average diameter D to a thickness T of the hollow stranded wire is not less than 5 and not greater than 20.
This wire take-up device is provided with a locking jig having a pair of distal end portions that can be moved into and out of contact with each other. A control unit of the wire take-up device is configured to perform a process for taking up the wire on a take-up drum, and a process for pinching a lead-out portion of the wire with the locking jig, inserting the locking jig into a clip, and opening the clip by opening a tip-end portion of the locking jig against a biasing force of the clip.
B21C 47/26 - Special arrangements with regard to simultaneous or subsequent treatment of the material
B65H 65/00 - Securing material to cores or formers
B65H 54/12 - Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making packages of specified shapes or on specified types of bobbins, tubes, cores, or formers on flanged bobbins or spools
B65H 54/22 - Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling or fault-detecting of the running material, and replacing or removing of full or empty cores
B65H 75/28 - Arrangements for securing ends of material
A saw wire 2 according to the present invention comprises a first kinked section 4, a second kinked section 6, a third kinked section 8, and a straight section 10. The first kinked section 4 has the shape of a wave oscillating in a plane. The second kinked section 6 has kinks including a first wave component that oscillates in a plane, and a second wave component that oscillates in a plane different from the plane of the first wave component. The third kinked section 6 has the shape of a wave that oscillates in a plane different from the plane the first kinked section 4. The straight section 10 does not have a wave shape. The oscillation direction of the first wave component substantially matches the oscillation direction of the wave in the first kinked section. The oscillation direction of the second wave component substantially matches the oscillation direction of the wave in the third kinked section.
B28D 5/04 - Fine working of gems, jewels, crystals, e.g. of semiconductor materialApparatus therefor by tools other than of rotary type, e.g. reciprocating tools
H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting
National University Corporation Tokyo Medical and Dental University (Japan)
Inventor
Hanawa, Takao
Tsutsumi, Yusuke
Sasakura, Mitsutaka
Abstract
3/g. A Young's modulus of the alloy is not greater than 100 GPa. Also disclosed is a medical product including the alloy and a method for producing the alloy.
A contour of a cross-section perpendicular to a longitudinal direction of a wire 2 is a circle having a diameter of D. An imaginary circle 4 which is concentric with the circle of the contour of the wire 2 and has a diameter that is ¾ of the diameter D, is assumed. On the imaginary circle 4, a first measurement point M1, a second measurement point M2, a third measurement point M3, a fourth measurement point M4, a fifth measurement point M5, a sixth measurement point M6, a seventh measurement point M7, and an eighth measurement point M8 are assumed. A Vickers hardness (Hv) is measured at each of the eight measurement points. A standard deviation σ of the eight measurement values is not greater than 10. The average of the eight measurement values is preferably not less than 670 and preferably not greater than 770.
A saw wire 2 has a wavy form. The form has a shape composed of a first wave component 4, a second wave component 6, and a third wave component 8. The wavelength WL1 of the first wave component 4 is different from the wavelength WL2 of the second wave component 6. The wavelength WL2 of the second wave component 6 is different from the wavelength WL3 of the third wave component 8. The wavelength WL3 of the third wave component 8 is different from the wavelength WL1 of the first wave component 4. The wave height WH1 of the first wave component 4 is different from the wave height WH2 of the second wave component 6. The wave height WH2 of the second wave component 6 is different from the wave height WH3 of the third wave component 8. The wave height WH3 of the third wave component 8 is different from the wave height WH1 of the first wave component 4.
B24D 11/00 - Constructional features of flexible abrasive materialsSpecial features in the manufacture of such materials
H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting
B28D 5/04 - Fine working of gems, jewels, crystals, e.g. of semiconductor materialApparatus therefor by tools other than of rotary type, e.g. reciprocating tools
The catheter according to the present invention is a catheter 1 that is used by being introduced into a lumen and aspirates material to be aspirated including at least a liquid, said catheter comprising: a tube main body 12 provided with a hollow section wherein a proximal end side and a distal end side communicate with one another, and openings by which the hollow section communicates with the outside on the distal end side; and an opening protection part 11 provided in such a manner as to cover the tube main body in the distal end vicinity thereof and prevent occlusion of the openings. The opening protection part has a plurality of separation parts 115 for separating tissue in the lumen from the openings. The plurality of separation parts are provided so as to leave a predetermined interval from one another.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
33.
Apparatus and method for manufacturing rubber sheet containing steel cord
A manufacturing apparatus of a rubber sheet containing a steel cord, including a feeding device which feeds the steel cord while keeping a specified tension; a forming device which winds the steel cord being fed by the feeding device around engagement parts spaced from each other with a predetermined width; and a placement device which places on a rubber sheet member, the steel cord wound around the engagement parts with the predetermined width. The forming device includes forming parts which press bent portions of the steel cord wound around the engagement parts to form a bending shape of the bent portions, and the placement device includes a plurality of retaining parts disposed in two rows spaced apart from each other with the predetermined width to retain the bent portions in a state in which the steel cord having the bending shape is placed on the rubber sheet member.
B29D 30/38 - Textile inserts, e.g. cord or canvas layers, for tyresTreatment of inserts prior to building the tyre
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
B29C 70/16 - Fibrous reinforcements only characterised by the structure of fibrous reinforcements using fibres of substantial or continuous length
B29C 70/68 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers
B29C 65/00 - Joining of preformed partsApparatus therefor
This silver powder contains a multiplicity of particles 2 whose primary component is silver. The silver powder is flaky and has a single crystal structure, and the ratio of the number of particles 2 for which the largest flat surface is the (111) lattice plane relative to the total number of particles is 95% or more. This silver powder is water-dispersible. This silver powder is such that the median diameter D50 is 0.1-10 μm, the particle diameter standard deviation is 5 μm or less, the average thickness Tave is 300 nm or less, and the aspect ratio (D50/Tave) is 4 or more.
C09D 201/00 - Coating compositions based on unspecified macromolecular compounds
B22F 9/30 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
Provided is a retrieval device capable of easily retrieving an object such as a stent, from an internal cavity defined by internal cavity walls. The retrieval device (1) comprises: an operation wire (2) inserted inside a catheter (4) so as to be capable of advancing and retracting, said catheter being a hollow flexible tube; and a snare wire (3) provided at the tip of the operation wire (2). The snare wire (3) comprises one wire and comprises a first loop section (3a) on the base end side thereof, a second loop section (3b) on the tip side thereof, and an intersection point (3c) between the first loop section (3a) and the second loop section (3b). The first loop section (3a) and the second loop section (3b) are formed into a double loop shape arranged close and in a substantially concentric closed circle. The intersection point (3c) is on the tip end side of the first loop section (3a) and the operation wire (2), the first loop section (3a), and the second loop section (3b) are substantially on the same plane.
A61B 17/22 - Implements for squeezing-off ulcers or the like on inner organs of the bodyImplements for scraping-out cavities of body organs, e.g. bonesSurgical instruments, devices or methods for invasive removal or destruction of calculus using mechanical vibrationsSurgical instruments, devices or methods for removing obstructions in blood vessels, not otherwise provided for
A61F 2/95 - Instruments specially adapted for placement or removal of stents or stent-grafts
[Problem] To provide a stent capable of sufficiently supporting an inner wall of an inner cavity in a living body, from inside, and capable of being easily retrieved outside the living body after the use thereof is completed. [Solution] A stent 1 that: is delivered through the interior of a catheter, being a hollow flexible tube, from an incision at the base of the thigh of a patient; and is a coiled shaped (support-shaped) member that supports the inner wall of an inner cavity in a living body, from the inside and in a state in which the stent remains at the treatment site inside the inner cavity in the living body. The stent 1 is configured to have a long narrow shape following the inside of the catheter 2, when pulled in the longitudinal direction, and a coiled shape wound so as to support the inner wall of the inner cavity in the living body, from the inside, when released. The stent 1 also comprises a hooked section 1b for retrieval, at one end thereof.
A61F 2/88 - Stents in a form characterised by wire-like elementsStents in a form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
A61F 2/90 - Stents in a form characterised by wire-like elementsStents in a form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
A61F 2/95 - Instruments specially adapted for placement or removal of stents or stent-grafts
A hollow rope 2 has a first layer 4 and a second layer 6. The second layer 6 is located outside the first layer 4. The first layer 4 is formed by twisting together eight first strands 8. The first strands 8 are flat strands. The second layer 6 is formed by twisting together eight second strands 10. The second strands 10 are flat strands. In each of the strands, the ratio (Ww/Tw) of the width Ww of the strand to the thickness Tw of the strand is in the range of 2 to 11, inclusive. The twisting direction of the second strands 10 is opposite that of the first strands 8. The twisting angle of the first strands 8 is 85º or less. The twisting angle of the second strands 10 is 85º or less. The ratio (D/T) of the average diameter D of the hollow rope 2 to the thickness T of the hollow rope 2 is in the range of 5 to 20, inclusive.
NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY (Japan)
Inventor
Hanawa, Takao
Tsutsumi, Yusuke
Sasakura, Mitsutaka
Abstract
This bio alloy contains: Zr as a main component; 0.1-25 mass% of Nb; 0.1-25 mass% of Mo; and 0.1-25 mass% of Ta. The tensile strength of this alloy is 1000 MPa or more. The total content ratio of Nb, Mo, and Ta with respect to this alloy is 2-50 mass%. The mass magnetic susceptibility of this alloy is 1.50×10-6cm3/g or less. The Young's modulus of this alloy is 100 GPa or less. Various bionic implants and medical devices can be manufactured from this alloy. This alloy can be obtained by a manufacturing method having: a step for performing plastic working on a material; and a step for performing heat treatment on this material.
According to the present invention, the contour shape of a cross-section perpendicular to the longitudinal direction of a wire 2 is a circle with a diameter of D. A virtual circle 4 is assumed which is concentric with the circle of the contour shape of the wire 2 and has a diameter that is 3/4 of the diameter D. A first measuring point M1, a second measuring point M2, a third measuring point M3, a fourth measuring point M4, a fifth measuring point M5, a sixth measuring point M6, a seventh measuring point M7, and an eighth measuring point M8 are assumed to be on the virtual circle 4. The Vickers hardnesses at these eight measuring points are measured. The standard deviation σ of the eight measurement values is 10 or less. It is desirable that the average of the eight measurement values be 670-770 inclusive.
This forceps 2 comprises a tubular-shaped insertion tube 6, and an operation wire 8 inserted into the insertion tube 6 so as to be movable back and forth. The operation wire 8 comprises a wire body 18 and a plurality of gripping members 20 extending from the distal end of the wire body 18. Each gripping member comprises a gripping body 26. When the plurality of gripping members 20 are in an insertion posture in which the members are inserted into the insertion tube 6, the plurality of gripping bodies 26 are aligned in the circumferential direction, forming a space 24 surrounded by the plurality of gripping bodies 26 aligned in the circumferential direction.
This retractor is provided with: a displacing section in which an expansion body comprises a movable wire and a plurality of stationary wires arranged around the movable wire, the distal end of the movable wire and the distal ends of the stationary wires being connected; an insertion tube having a distal end connected to the proximal ends of the stationary wires, the insertion tube also having a proximal end connected to a second grip section, the insertion tube allowing the movable wire to extend therethrough; and a restriction member connected to the proximal end of the movable wire and restricting the movement of the movable wire. The relative movement between a first grip section and the second grip section causes the restriction member to restrict the movement of the movable wire when the restriction member is in contact with the first grip section, and when the first grip section and the second grip section are moved relatively toward each other in this state, the distal end of the insertion tube, which is connected to the second grip section, and the distal end of the movable wire, the movement of the movable wire being restricted, are moved toward each other to cause the stationary wires to sag, thereby expanding the displacing section.
Needle wire (2) is formed from steel that comprises 0.95 mass% to 1.03 mass% of C, 0.15 mass% to 0.35 mass% of Si, 0.60 mass% to 0.80 mass% of Mn, 0.35 mass% to 0.45 mass% or Cr, 0.01 mass% to 0.05 mass% of Mo, 0.10 mass% or less of Ni, and 0.026 mass% or less of P, the balance being Fe and unavoidable impurities. Said wire (2) contains multiple carbide particles in the metal structure thereof. The average particle diameter of said carbides is 0.10 µm to 1.0 µm. The area ratio of said carbides is 10% to 30%. The S content in the steel is 0.003% or less. The Vickers hardness of the wire (2) is 200 to 300.
[Object] A hollow stranded wire line, for manipulation, having an excellent torque transmittability is provided.
[Solution] A hollow stranded wire line 2 for manipulation is a hollow stranded wire line 2 that is advantageously used as a stranded wire line for manipulation in a medical instrument, and a side wire 4 or a side strand which is an outermost layer has a forming rate that is greater than 100% and not greater than 110%. The side wire 4 or the side strand having been formed has a spiral shape in which a flatness that is an aspect ratio obtained by a major axis being divided by a minor axis is preferably not less than 1.01 and preferably not greater than 1.10.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
D07B 1/06 - Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
F16C 1/02 - Flexible shaftsMechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
F16C 1/20 - Construction of flexible members moved to and fro in the sheathing
A61B 17/00 - Surgical instruments, devices or methods
A manipulation rope having an excellent torque transmittability is provided. A manipulation rope 2 is a rope 2 that is advantageously used as a manipulation rope for a medical instrument, and includes a side wire 6 or a side strand which is an outermost layer, the side wire 6 or the side strand having a spiral shape in which a flatness that is an aspect ratio obtained by a major axis being divided by a minor axis is greater than 1.00 and not greater than 1.10. An elongation of the rope at a time when a tensile load that is 1.0% of a breaking load is applied, is preferably not less than 0.04% and preferably not greater than 0.10%.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 17/12 - Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
The present invention addresses the problem of providing a medical instrument, with which there is little induction of allergic reactions in patients, which has excellent strength and corrosion resistance, and with which patients do not easily feel pain during insertion. The medical instrument is formed from a wire 2 (or pipe). The material of said wire 2 is titanium or a titanium alloy. The arithmetic mean roughness Ra of said wire 2 measured along the radial direction is 0.20 µm or less. Preferably, the wire 2 has a main section 8 and an oxide coating 10. The main section 8 is covered entirely with the oxide coating 10. The thickness T of the oxide coating 10 is 0.01 µm to 0.05 µm. The diameter D of the wire 2 is 0.05 mm to 0.50 mm.
A61M 5/32 - NeedlesDetails of needles pertaining to their connection with syringe or hubAccessories for bringing the needle into, or holding the needle on, the bodyDevices for protection of needles
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
A manipulation rope having an excellent torque transmittability is provided. A manipulation rope is a rope that is advantageously used as a manipulation rope for a medical instrument, and includes a side wire or a side strand which is an outermost layer, the side wire or the side strand having a forming rate that is greater than 100% and not greater than 110%. The side wire or the side strand having been formed has a spiral shape in which a flatness that is an aspect ratio obtained by a major axis being divided by a minor axis is preferably not less than 1.01 and preferably not greater than 1.10. Further, an elongation of the rope at a time when a tensile load that is 1.0% of a breaking load is applied, is preferably not less than 0.04% and preferably not greater than 0.10%.
D07B 1/10 - Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core the layers of which are formed of profiled interlocking wires, i.e. the strands forming concentric layers with a core of wires arranged parallel to the centre line
D07B 1/06 - Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
F16C 1/20 - Construction of flexible members moved to and fro in the sheathing
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 17/00 - Surgical instruments, devices or methods
NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY (Japan)
Inventor
Hanawa Takao
Tsutsumi Yusuke
Abstract
Provided is a biocompatible alloy that exhibits low magnetic susceptibility and excellent mechanical characteristics. This biocompatible alloy includes: Zr as the main ingredient; 0.1-25 mass% of Nb; 0.1-25 mass% of Mo; and 0.1-25 mass% of Ta. The total content of Nb, Mo, and Ta in the alloy is 2-50 mass%. The mass magnetic susceptibility of the alloy is 1.50 x 10-6 cm3/g or less. The Young's modulus of the alloy is 100 GPa or less. A variety of biocompatible implants and medical devices can be produced out of the alloy.
The present invention is provided with: a feeder that feeds a steel cord while maintaining a predetermined tension; a former that winds and locks the steel cord fed by the feeder, onto locking parts that are disposed to be spaced a predetermined width apart from each other; and a positioner that places, on a rubber sheet piece, the steel cord wound to a predetermined width by the former. The former has a shaping part that presses and shapes a flexure portion of the steel cord wound onto the locking parts, and the positioner has a plurality of holding parts disposed in two rows spaced a predetermined width apart from each other so as to hold the flexure portion while the steel cord shaped by the former is placed on the rubber sheet piece. As a result, a manufacturing device for a steel cord-embedded rubber sheet is configured so that the steel cord is properly bent and the steel cord can be stably placed on the rubber sheet piece.
H01B 1/02 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of metals or alloys
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B22F 9/24 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
H05K 1/09 - Use of materials for the metallic pattern
50.
STRETCHABLE WIRING SHEET AND STRETCHABLE TOUCH SENSOR SHEET
[Problem] To provide a stretchable wiring sheet and a stretchable touch sensor sheet which can be manufactured easily at low cost, have high flexibility and durability, and are highly stretchable with small changes in resistance value when stretched. [Solution] The stretchable wiring sheet of the present invention is characterized in that, between a stretchable first elastomer sheet 1a and a stretchable second elastomer sheet 1b adhered opposing the first elastomer sheet 1a, a lead wire 2 which is plastically deformed in a wavy shape is interposed with a height direction of the waves of the wavy shape extending along an in-plane direction of the opposing surfaces of the first elastomer sheet 1a and the second elastomer sheet 1b, the lead wire 2 having either a circular, oval, or running track-shaped cross sectional shape in a transverse cross section, and being periodically curved in a longitudinal direction.
B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer
B32B 7/02 - Physical, chemical or physicochemical properties
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
H01B 7/04 - Flexible cables, conductors, or cords, e.g. trailing cables
51.
STRETCHING-CONTRACTING WIRING SHEET, PRODUCTION METHOD AND PRODUCTION DEVICE THEREFOR, AND STRETCHING-CONTRACTING TOUCH SENSOR SHEET
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (Japan)
TOKUSEN KOGYO CO., LTD. (Japan)
Inventor
Yoshida Manabu
Uemura Sei
Nobeshima Taiki
Yamashita Masato
Sumimoto Shin
Abstract
[Problem] To provide: a highly stretchable and contractile stretching-contracting wiring sheet which can be produced simply and at low-costs, having high flexibility, durability and external-force-following ability such that the resistance value variation accompanying a stretching and contraction is small; a production method and a production device therefor; and a stretching-contracting touch sensor sheet. [Solution] This stretching-contracting wiring sheet is characterized by comprising: a stretching-contracting first elastomer sheet 1a; a stretching-contracting second elastomer sheet 1b facing and adhered to the first elastomer sheet 1a; and a conducting wire 2 adopting, when under no load, a periodically curved wave-shaped form within the plane wherethrough the first elastomer sheet 1a and the second elastomer sheet 1b face one another, the conducting wire 2 being sandwiched between the first elastomer sheet 1a and the second elastomer sheet 1b in a biased state in the direction in which the wave-shaped form would return to a rod-shaped form.
[Problem] To provide hollow twisted wire for operation that has superior torque transfer properties. [Solution] In this hollow twisted wire 2 for operation, which is used suitably as a twisted wire for operation of a medical instrument, the shaping ratio of side wire 4 or side strands constituting the outermost layer thereof is greater than 100% and less than or equal to 110%. Furthermore, the flatness, which is the aspect ratio of the long diameter of the spiral shape formed by the side wire 4 or side strands that are shaped divided by the short diameter, is preferably 1.01 - 1.10.
[Problem] To provide an operating rope having excellent torque transmission characteristics. [Solution] An operating rope 2 that is suitable for use as an operating rope for a medical instrument. The preforming ratio of a side wire 6 or a side strand that is the outermost layer of the operating rope 2 is configured to be more than 100% and equal to or less than 110%. The degree of flatness, i.e., the aspect ratio resulting from dividing the major axis by the minor axis in a spiral shape formed by the preformed side wire or side strand is preferably configured to be 1.01-1.10. In addition, the elongation rate of the rope when a tensile load of 1.0% of the breaking load is applied thereto is preferably 0.04-0.10%.
D07B 1/06 - Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
D07B 1/10 - Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core the layers of which are formed of profiled interlocking wires, i.e. the strands forming concentric layers with a core of wires arranged parallel to the centre line
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 17/00 - Surgical instruments, devices or methods
[Problem] To provide an operating rope having excellent torque transmission characteristics. [Solution] An operating rope 2 that is suitable for use as an operating rope for a medical instrument. The degree of flatness, i.e., the aspect ratio resulting from dividing the major axis by the minor axis in a spiral shape formed by a side wire 6 or a side strand that is the outermost layer of the operating rope 2 is set to be greater than 1.00 and equal to or less than 1.10. In addition, the elongation rate of the rope when loaded with a tensile load of 1.0% of the breaking load thereof is preferably 0.04-0.10%.
D07B 1/22 - Flat or flat-sided ropesSets of ropes consisting of a series of parallel ropes
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 17/12 - Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
The purpose of the present invention is to provide: a manufacturing method for a rubber sheet containing a steel cord, by which a steel cord can be easily, stably, and continuously bent and can be disposed on a rubber sheet; and a manufacturing device suitable for carrying out the manufacturing method. In this manufacturing method, two chucks having fixed installation positions, one chuck that can move in a straight line with respect to a conveyance direction of a conveyor belt and one chuck that can move vertically and laterally, are used to fix and release a steel cord, and the steel cord is bent using the movable chucks, so that the steel cord can be stably disposed on a rubber sheet in a bent state.
D07B 3/00 - General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
B29K 105/08 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
In order to provide microparticles 2 having excellent printing properties, thermal conductivity, and electroconductivity, the microparticles 2 are configured so that flakes of an electroconductive metal, typically silver, are a main component. A particle group comprising a large number of the microparticles 2 has a particle size D50 of 0.10 to 0.50 μm, a particle size D95 of 1.00 μm or smaller, and a maximum particle size Dmax of 3.00 μm or smaller. In addition, this particle group has a particle size D10 of 0.05 μm or greater, a BET specific surface area of 2.0 m2/g or greater, and a tap density TD of 2.0 g/cm3 or greater, and the mean thickness Tave of the microparticles 2 is 0.05 μm or smaller.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/00 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor
H01B 1/00 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors
H01B 1/22 - Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B22F 9/30 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
57.
METHOD AND APPARATUS FOR MANUFACTURING RUBBER SHEET INCORPORATING STEEL CORD
The purpose of the present invention is to provide a method for manufacturing a rubber sheet incorporating a steel cord, the method enabling the steel cord to be easily, stably, and continuously bent and disposed on the rubber sheet, and a manufacturing device suitable for implementing such a manufacturing method. In the manufacturing method according to the present invention, a steel cord is secured by three chucks disposed at regular intervals, and the central chuck is rotated to a position above a conveyor. The chuck installed at a location which is furthest from a rubber sheet is moved in a parallel manner so as to reduce the distance between the chucks at the ends. The steel cord that has been bent is disposed on a plane and is sandwiched between two rubber sheets while the shape thereof is maintained. The positions of the chucks at the ends are switched each time the steel cord is bent, and the central chuck repeats the rotating motion.
B29D 30/38 - Textile inserts, e.g. cord or canvas layers, for tyresTreatment of inserts prior to building the tyre
D07B 1/06 - Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
B29K 21/00 - Use of unspecified rubbers as moulding material
B29K 105/08 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
B29L 30/00 - Pneumatic or solid tyres or parts thereof
[Object] To provide fine particles 2 having excellent printing characteristics, thermal conductivity, and electrical conductivity.
[Solution] The fine particles 2 are flake-like. A main component of the fine particles 2 is an electrically conductive metal. A representative metal is silver. The structure of this metal is monocrystalline. An arithmetical mean roughness Ra of the surface of the fine particles 2 is not larger than 10 nm. The fine particles 2, a solvent, a binder, and a dispersant, etc., are mixed to obtain an electrically conductive paste. By using the electrically conductive paste, a pattern connecting elements is printed on a printed circuit board of an electronic device.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
H01B 1/02 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of metals or alloys
B22F 9/30 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
H01B 1/22 - Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
The purpose of the present invention is to provide a retractor with which it is possible to reduce the emotional and physical load on a patient and a surgeon by reducing the generation of sparks in an operative field caused by undeliberate contact between an expanded retractor and another surgical device (such as an electric surgical knife). The present invention is a retractor for displacing an organ within the body cavity or the inner wall of a hollow organ, the retractor being provided with: a housing tube; an expansion body which can be housed into and extend from the housing tube; and a grip connected to the proximal ends of the housing tube and the expansion body. The expansion body is provided with: a displacing part configured from a movable wire and multiple fixed wires disposed in the periphery of the moveable wire; and an introduction tube which is disposed along the displacing part and through which the movable wire penetrates. Moreover, when the expansion body is expanded, the displacement part is designed so that, from among the expansion angles formed by two adjacent fixed wires, one expansion angle (θ2) becomes larger than the other expansion angle (θ1).
A61B 17/02 - Surgical instruments, devices or methods for holding wounds open, e.g. retractorsTractors
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A retractor (100) has a rigid piercing tube (110) and an expansion body (120). The expansion body (120) has an introduction tube (130) which is received within the piercing tube (110), a movable wire (124) which is received within the introduction tube (130), and stationary wires (126) which are arranged around the movable wire (124). The proximal end of each of the stationary wires (126) is affixed to the distal end of the introduction tube (130). The distal end of each of the stationary wires (126) is joined to the distal end of the movable wire (124). The respective proximal ends of the piercing tube (110), the introduction tube (130), and the movable wire (124) are respectively joined to first, second, and third grip sections (162, 164, 166). The piercing tube (110) is inserted into a luminal organ or a body cavity, the introduction tube (130) is advanced to the distal side, and the movable wire (124) is retracted to the proximal side. As a result, the stationary wires (126) are bent outward and press and displace the inner wall of the luminal organ or an organ within the body cavity. This retractor (100) can be used for an endoscopic surgery.
A traverse device and a traverse method for winding wire materials are provided. A guide roller is placed near the outer circumference of a reel body and inclined, around the rotation center (center of curvature of an R guide) located near the outer edge of the guide roller on the side near the reel body as the fulcrum, in a direction in which the roller outer edge recedes from one of reel flanges ahead in the traverse direction on the side apart from the reel body. The inclining direction is switched at the midpoint position between the reel flanges, and with the guide roller being inclined at all times, a reel is rotated while being moved in the axis direction to wind a wire material on the reel.
Provided are flake-shaped microparticles (2) having an electroconductive metal as a principal component. A typical metal is gold, and the metal has a monocrystalline structure. The arithmetic surface roughness (Ra) of the surface of the microparticles (2) is no greater than 10 nm. The microparticles (2) and substances such as a solvent, a binder, and a dispersant are mixed and an electroconductive paste is obtained. Provided are microparticles (2) in which printing a pattern for connecting elements, using the electroconductive paste, on a printed substrate of an electronic device results in excellent printing properties, heat conductivity, and electric conductivity.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/30 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
H01B 1/00 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors
H01B 1/22 - Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form
A steel cord is configured so that, when the steel cord is used as a tensile cord for an elastic track, a core dislocation and the early breakage of the wires of a core are prevented. A steel cord comprises: a core which comprises a single core strand; and a sheath which is formed by twisting together six sheath strands arranged around the core. The core strand has a layer twisted structure comprising: a core portion which is formed by twisting three core wires together; and an outer layer portion which is formed by twisting together eight to nine core wires arranged around the core portion. The sheath strands each have either a bundle twisted structure which is formed by twisting 12 to 19 sheath wires or a multi-layer twisted structure which is formed by twisting 12 to 19 sheath wires in layers. The diameter (dc) of the core wires is greater than the diameter (ds) of the sheath wires. The average gap (Gc) between the core wires of the outer layer portion is 0.015 mm or greater, and the average gap (Gs) between the sheath strands is 0.1 mm or greater.
Provided is a wire for piston rings with which variation in the width of the piston ring gap is reduced, workability during coiling is excellent, and which can be manufactured at low cost. This wire for piston rings is obtained from steel comprising 0.50 mass% to 0.80 mass% of C, 1.00 mass% or less of Si, 1.00 mass% or less of Mn, 11.0 mass% to 14.0 mass% of Cr, 0.20 mass% to 2.0 mass% of Mo, and unavoidable impurities. The area ratio of carbide particles with an equivalent circle diameter of 0.2 µm to 5 µm is 10% or less in the structure of a transverse cross-section, and the Vickers hardness is 350 to 450. The wire is manufactured by undergoing hardening and tempering and the tempering temperature is 645°C or more.
C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
F16J 9/26 - Piston-rings, seats thereforRing sealings of similar construction in general characterised by the use of particular materials
A traverse device, while a wire material (T) that is supplied via a guide channel (2a) of a guide roller (2) is taken up by a reel cylinder (1a), moves the relative position of the guide roller (2), with respect to a reel (1), in a reel axis line (R) direction. The guide roller (2) can be inclined around a rotational center (C). The rotational center (C) passes through the vicinity of the outer edge of the guide roller (2) that is near the reel cylinder (1a). When the guide roller (2) approaches a reel flange (1b), the guide roller (2) is inclined so that of the vicinity of the outer edge of the guide roller (2) a portion far from the reel cylinder (1a) is spaced apart from the reel flange (1b). While the guide roller (2) is spaced apart from the reel flange (1b), a roller axis line (K) of the guide roller (2) is maintained so as to be parallel with the reel axis line (R).
The present invention provides a traverse device which, while a linear material (T) supplied via a guide groove (2a) of a guide roller (2) is being wound around a reel body part (1a), moves the relative position of the guide roller (2) with respect to a reel (1) in the reel axis (R) direction. The guide roller (2) can tilt around the centre of rotation (C). The centre of rotation (C) passes through a portion close to the reel body part (1a) in proximity to the outer edge of the guide roller (2). The inclination of the guide roller (2) can be switched over when the guide roller (2) is positioned intermediately between the reel flange parts (1b) in such a way that a portion remote from the reel body (1a) in proximity to the outer edge of the guide roller (2) is distanced from the reel flange parts (1b). There is no disturbance of the traverse pitch of the linear material (T) when the inclination of the guide roller (2) switches over.
To provide a price-competitive compression ring having excellent thermal conductivity and thermal sag resistance, which can be used in a high-thermal-load environment of high-compression-ratio engines, steel identified by the material number of SUP10 in JIS G 4801, which contains small amounts of alloying elements, is used, and a piston ring wire is annealed before an oil-tempering treatment such that spheroidal cementite having an average particle size of 0.1-1.5 μm is dispersed in a tempered martensite matrix, thereby suppressing the movement of dislocation and creep even at 300° C., and improving thermal sag resistance.
F02F 5/00 - Piston rings, e.g. associated with piston crown
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
F16J 9/26 - Piston-rings, seats thereforRing sealings of similar construction in general characterised by the use of particular materials
A fine silver particle-containing composition includes a large number of fine silver particles 2 and a coating layer 4 that covers a surface of each silver particle 2. The silver particle 2 is a so-called nano particle. The silver particle 2 has a scale-like shape. The coating layer 4 consists of an organic compound. The organic compound binds to the silver particle 2. The organic compound suppresses aggregation of the silver particle 2. The composition is in a cake form. A weight ratio of the organic compound with regard to the total amount of the composition is not lower than 2% but not higher than 15%.
H01B 1/02 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of metals or alloys
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B22F 9/26 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions using gaseous reductors
B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
H01B 1/22 - Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
This retractor is provided with a retraction part having a distal end having an obtuse shape, an introduction part provided to extend from the retraction part, and a handle part provided at the proximal end of the introduction part, the retraction part and the introduction part each have an outer diameter capable of being inserted into a treatment tool channel of an endoscope, the retraction part is configured from a movable wire and a plurality of stationary wires, the movable wire passes through the introduction part, the proximal ends of the stationary wires are affixed to the distal end of the introduction part, the distal end of the movable wire and the distal ends of the stationary wires are joined to each other, and the retraction part can manifest a cocoon shape by pulling the proximal end of the movable wire to the handle part side by the handle part. This retractor does not need an insertion path from the body surface, and is thus useful to laparoscopic surgery and minimally invasive surgery such as NOTES.
Disclosed is a composition containing silver microparticles, which comprises many silver microparticles (2) and a coating layer (4) that coats the surface of each of the silver particles (2). The silver particles (2) are so-called nano-particles. Each of the silver particles (2) has a scale-like shape. The coating layer (4) comprises an organic compound. The organic compound is adhered to each of the silver particles (2). The organic compound can suppress the aggregation of the silver particles (2). The composition has a cake-like form. The ratio of the amount of the organic compound relative to the total amount of the composition is 2 to 15% by mass inclusive.
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/26 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions using gaseous reductors
H01B 1/22 - Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form
H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
72.
Rubber-product-reinforcing steel cord and method for manufacturing the same
A single-layered rubber-product-reinforcing steel cord with good rubber penetration properties, excellent fatigue resistance, and small low-load stretch is obtained. All of wires 11 are provided with curls having a substantially elliptical cross-section and a pitch smaller than that of curls for intertwining, formed by providing the wires with spiral curls and then pressing the wires. These wires are intertwined into each other to form a single-layered twist structure, and, thus, a cord is obtained in which a hollow portion at the center of the cord is in communication with an outside via a gap 12 between the wires 11, and at least any one pair of adjacent wires 11 are substantially in contact with each other at any point in the longitudinal direction of the cord.
a) to allow the end part of the metallic filament (W) to be caught therein. The end retaining member (5) is anchored to the connecting portion (4) through spot welding, using a welding portion (6) set in the vicinity of the base end portion.
A process for synthesizing nano-sized rutile, anatase, or a mixture of rutile and anatase TiO2 powder. The process includes the steps of: 1 ) forming a Ti-peroxo complex by mixing H2O2 with a Ti compound, and 2) heating the Ti-peroxo complex at a temperature of above 50°C. A primary particle size of TiO2 particles, synthesized by the method, is below 50nm, and an agglomerated particle size thereof after a washing/dry process is below about 10 &mgr;m. The major characteristics of the present invention are that it is a low temperature process, a highly concentrated synthesis, and high production yield of above 90%.
A reel around which a fine metal linear material, such as a filament for a tire cord, a saw wire, or the like, is wound, is formed by fixedly joining flanges (2) made of a steel sheet and having a hollow ring-shaped outer edge reinforcing portion (8) at an outer edge to both ends of a winding drum (1). In the outer edge reinforcing portion (8) of the flange (2), an outer edge portion of the flange (2) is bent back outward in a reel axial direction at a substantially right angle with respect to a substantially flat inner surface thereof and is then curled inward in a radial direction so that the metal linear material can be wound up to the very outer edge of the flange (2).
A probe needle for probe card that excels in electric conductivity, corrosion resistance and abrasion resistance, having an appropriate contact force to chip electrode, and that ensures excellent bending workability in production stage, being resistant to bending or breaking in the stage of actual use. There is provided a probe needle for probe card of component formulation comprising 1 to 10 wt.% platinum, 5 to 15 wt.% silver, 10 to 20 wt.% either copper or nickel or sum of both and the rest composed mainly of gold, which probe needle exhibits a tensile strength of 1000 to 1200 N/mm2 and a Vickers hardness (Hv) of 300 to 360.
A clip (10) for holding an end of a metal wire product, in which the clip (10) can be replaceably attached to a reel for the metal wire product. In the clip (10), attachment arms (12) and coil sections (14) are formed on both sides of a clip body (11) that is formed for example in a substantially W shape. The upper part of the clip body (11) and also the attachment arms (12) are fitted into a space formed in an outer circumferential section (4) of a flange to hold an end of a metal wire (W) by elastic force of the clip. Alternatively, clip attachment sections (107) and clip tip holding sections (109) are formed on a flange (101), and a clip (110) is attached to these sections (107, 109), where the clip (110) is composed of a clip body (111) formed for example, in a substantially U shape and of substantially reverse U-shaped positioning/attachment sections (112) provided at both sides of the clip body (111).
06 - Common metals and ores; objects made of metal
Goods & Services
BEAD WIRE, STEEL CORDS FOR TIRE REINFORCEMENT, OTHER STEEL CORDS FOR REINFORCEMENT OF RUBBER PRODUCTS, OTHER STRANDED METAL FILAMENTS; WIRE FOR PISTON RING, OIL TEMPERED WIRE, PLATED STEEL WIRE, SHAPED WIRE, STEEL WIRE FOR SEWING MACHINE NEEDLE AND KNITTING NEEDLE, STEEL WIRE FOR FISH-HOOK, FINE STEEL WIRE, STEEL WIRE FOR SPRING, STEEL WIRE FOR SAWS, OTHER METAL WIRES; [ IMITATION TREE COMPRISING BUNDLES OF METAL WIRES OR STRANDED METAL FILAMENTS; ORNAMENTS COMPRISING BUNDLES OF METAL WIRES OR STRANDED METAL FILAMENTS; ] PRECISION PINS FOR PROBE CARD, DOT PIN FOR PRINTERS
