Pressure activated valves for catheters with improved tolerance of high pressure and high flow conditions are described. Embodiments of the valve comprise a flexible membrane with one or more linear slits therethrough, and means for applying tension to the flexible membrane in-line with the linear slits. The application of tension may optionally be facilitated by structural features of both the flexible membrane and the valve housing.
A61M 5/00 - Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular wayAccessories therefor, e.g. filling or cleaning devices, arm rests
An apparatus for providing access to a target site in a living body, comprises a first elongated member including a proximal opening to a first lumen and a branching point at a distal end thereof and a second lumen open to the first lumen at the branching point, the second lumen extending to a second lumen distal opening at a first connector, the first connector configured to engage a proximal end of a first lumen of a multi-lumen catheter in combination with a third lumen open to the first lumen at the branching point, the third lumen extending to a third lumen distal opening at a second connector, the second connector configured to engage a proximal end of a second lumen of a multi-lumen catheter.
Disclosed is a catheter that includes a porous element. In one embodiment, the porous element comprises the same polymeric material as the catheter shaft. In another embodiment, the porous element comprises a porous polyurethane material. In one aspect, the present invention includes a catheter that comprises a shaft having proximal and distal ends, wherein the shaft comprises a first polymeric material. The catheter includes a first opening at the proximal end of the shaft and a second opening at the distal end, and a lumen extending between the first and second openings. The catheter further includes a porous element disposed about a portion of the catheter shaft, wherein the porous element comprises the first polymeric material and is preferably positioned closer to the proximal end of the shaft than the distal end of the shaft.
A catheter that comprises a hub, an elongated conduit, and at least one lumen therein. The lumen includes a proximal lumen section, a distal lumen section, and an intermediate lumen section extending between the proximal and distal lumen sections. The cross-sectional dimension of the intermediate lumen section is less than the cross-sectional dimension of the distal lumen section. In one embodiment, the cross-sectional dimension of the intermediate lumen section is less than the cross-sectional dimension of the proximal lumen section. In certain embodiments, the lumen tapers from the distal and/or proximal lumen sections to the intermediate lumen section.
A medical device packaging comprising a connector coupled to a longitudinal element having a lumen sized and shaped to receive an shaft of a medical device extending distally from a hub of the elongate member. The connector including a first branch having a lumen open to the lumen in the elongate member and a second branch having lumen open to the lumen in the first branch. A proximal end of the first branch being configured to mate with a distal end of a housing of the medical device to be received in the packaging. The hub of the medical device including laterally extending wings having opposing contours. The medical device including a strain relief member coupled at a distal end of the hub of the medical device.
A multiple septum vascular access port is provided, including a housing, an inner and outer wall, two reservoirs, two septa, and two fluid lines in fluid communication with the two reservoirs. The reservoirs and septa are arranged so that one reservoir and septum is nested within the other reservoir and septum.
A61M 5/00 - Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular wayAccessories therefor, e.g. filling or cleaning devices, arm rests
A device for transferring fluids between an internal structure in a living body and an exterior thereof comprises a housing including a pressure activated lumen extending to a distal end opening to a power injection lumen that extends to a distal port configured for connection to a fluid conduit extending to a target structure within the body and a pressure activated valve extending across the pressure activated lumen and controlling fluid flow therethrough, in combination with a proximal port coupled to the housing for movement between a first position in which a proximal end of the power injection lumen opens to the proximal port and a second position in which a proximal end of the pressure activated lumen opens to the proximal port.
A61M 5/00 - Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular wayAccessories therefor, e.g. filling or cleaning devices, arm rests
A61M 3/00 - Medical syringes, e.g. enemataIrrigators
8.
MECHANICAL ADVANTAGE FOR HUB LINEAR TRAVEL FOR A DRAINAGE CATHETER
An indwelling drainage catheter is disclosed that is configured to include a longitudinal catheter shaft having a distal and a proximal end, a cord in coaxial arrangement within said longitudinal catheter, a static hub operatively connected to said longitudinal catheter at said proximal end, a dynamic hub configured to move along a longitudinal axis of said longitudinal catheter substantially near said proximal end, wherein a first end of said cord is affixed to said longitudinal catheter at said proximal end and a second end of said cord is affixed to said longitudinal catheter at said distal end, and further wherein the longitudinal movement of the dynamic hub is substantially one half the distance needed to close the pigtail shape.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
9.
VALVED CATHETER WITH INTEGRATED PRESSURE MEASUREMENT CAPABILITIES
Valve assemblies and valved catheters including pressure sensors, and related methods for treating patients, are disclosed. The valve assembly includes a valve member extending across a first lumen and includes a planar flexible member with an internal slit acting as a valve. The valve assembly further includes a pressure sensor located distally from the valve member and in fluid communication with the first lumen.
A catheter hub assembly comprising a hub body having a proximal end, a distal end, and a shaft having a first suture hole, a collar and a snap ring; a hub knob having a second suture hole and rotatably coupled to the hub body; and a hub cap having a snap rut wherein the snap ring fits into the snap rut. In one embodiment, the hub body includes a lock element; the hub knob includes a first tab element and a second tab element; and the hub cap includes a groove; wherein the first tab element engages the lock element; and wherein the second tab element engages the groove. In another embodiment, the hub cap includes a lock element comprising a resilient tab and a catch; the hub knob includes a catch tab; wherein the catch tab engages the catch of the lock element.
A medical device at least partially insertable into a patient. The device comprises a catheter portion comprising a flexible tube that is at least partially insertable into the patient, and a valve portion proximal to the catheter portion. The valve portion comprises a planar flexible member comprising first and second valve portions separated from one another by an internal slit. The thickness of the planar flexible member at the internal slit is less than the thickness of the planar flexible member at any other location.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A guidewire having a longitudinal axis includes an inner ribbon coil wound in a first direction, an outer ribbon coil wound in a second direction opposite the first direction wherein the inner ribbon coil is coaxially arranged within the outer ribbon coil and configured to prevent the inner ribbon coil from interlocking with the outer ribbon coil, and a plurality of connection points along the longitudinal axis of the guidewire wherein the plurality of connection points affixes the inner ribbon coil to the outer ribbon coil.
An indwelling drainage catheter is disclosed that is configured to include spiral, helical or radial geometry on the external surface that allows the catheter to be introduced and locked into the anatomy via threading, linear indexing or similar action.
A valve comprises a flexible member including a slit formed on a central portion thereof and a first housing defining a first lumen extending therethrough, the first housing including a first contacting surface adapted, when the slit of the flexible member is aligned with the first lumen, to contact a first side of the flexible member the first housing defining a relief area extending about a perimeter of the first contacting surface radially outside the central portion relative to a longitudinal axis of the first lumen in combination with a second housing adapted to mate with the first housing with a second lumen defined by the second housing aligned with the first lumen and separated therefrom by the flexible member, the second housing including a second contacting surface.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
15.
THREE-WAY VALVE FOR POWER INJECTION IN VASCULAR ACCESS DEVICES
An apparatus for facilitating fluid flow between an internal body structure and a device external to the body comprises a housing having proximal and distal chambers separated from one another by a wall and fluidly connected to proximal port and distal ports. The wall includes a valve selectively sealing first and second openings thereof and a canopy biased toward a sealing position sealingly surrounding the first opening. The bias of the canopy is set to define a first pressure differential at which the canopy is moved out of the sealing position to permit fluid transfer therepast in a first direction. A duck-bill stem extends through the second opening and includes a lumen extending therethrough with walls of the stem being biased toward a sealing position and configured so that, when a second pressure differential is applied at at least a second level, the first end opens to permit flow therepast.
A device for transferring fluids between an internal structure in a living body and an exterior thereof, comprises a housing including a pressure activated lumen extending to a distal end opening to a power injection lumen that extends to a distal port configured for connection t a fluid conduit extending to a target structure within the body and a pressure activated valve extending across the pressure activated lumen and controlling fluid flow therethrough, the pressure activated valve opening to permit fluid flow therethrough into the power injection lumen when a fluid pressure differential thereacross is at least a first predetermined threshold level and remaining sealed when the fluid pressure differential thereacross is less than the first threshold level in combination with a proximal port coupled to the housing for movement between a first position in which a proximal end of the power injection lumen opens to the proximal port and a second position in which a proximal end of the pressure activated lumen opens to the proximal port.
An implantable port for accessing internal body structures, the port comprises a proximal housing including an opening providing access to an interior of the port and a distal housing adapted for assembly with the proximal housing, the distal housing including a reservoir which, when the distal housing is mated with the proximal housing is in fluid communication with the opening of the proximal housing in combination with a radiopaque element in one of the proximal and distal housings, a shape of the radiopaque element identifying, when imaged, a structural characteristic of the port not otherwise identifiable visually.
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
A61B 6/12 - Arrangements for detecting or locating foreign bodies
19.
PRESSURE ACTIVATED VALVE FOR HIGH FLOW RATE AND PRESSURE VENOUS ACCESS APPLICATIONS
A valve comprises first housing FH including first lumen FL extending therethrough and defining first disk-facing surface FDFS and second housing SH including second lumen SL extending therethrough and defining second disk-facing surface SDFS. SH is mated to FH so that SDFS faces FDFS in combination with flexible disk FD gripped between gripping portions of FDFS abd SDFS. FD includes slit extending therethrough which, when acted upon by fluid pressure of at least predetermined threshold level opens to permit fluid flow between FL and SL and which, when acted upon by fluid pressure less than threshold level remains sealed preventing fluid flow between FL and SL and relief well between opposing portions of FH and SH radially outside gripping portions. Width of relief well exceedes width of radially outer portion of FD so that radially outer portion of FD is free to move therewithin.
A bypass for power injection includes (a) a housing (100) defining a lumen (108) extending from a proximal end to a distal end coupled to a catheter; (b) a membrane valve (110) mounted within the lumen, the membrane valve having an opening (112) extending therethrough sized to tightly receive therethrough and seal around a power injection device (130); and (c) a flapper valve (120) extending across the lumen distally of the membrane valve. The flapper valve includes a flap biased toward a closed position in which the lumen is sealed. The flap is rotatable away from the closed position when contacted by a power injection device to permit the device to extend therethrough.
A flow control tip for a catheter comprises a partition dividing the catheter into first and second lumens, a first orifice fluidly connected to the first lumen and a second orifice fluidly connected to the second lumen, the first orifice being proximal to the second orifice, an elongate protrusion extending along a portion of the partition substantially along a centerline of the elongated body and a deflecting surface extending at an angle relative to the protrusion to direct flow from the first orifice away from the centerline.
A device for providing access to an implantable fluid transfer port, comprises a needle extending to a distal end insertable into body to enter a reservoir of a port implanted therein and an actuation member extending through a lumen of the needle from an actuator which remains external to a living body accessible to a user thereof in combination with an obturator coupled to a distal end of the actuation member, an outer diameter of the obturator substantially matching an inner diameter of the lumen of the needle so that, when retracted into the lumen, the obturator seals a distal opening thereof and an anchoring mechanism coupled to the actuation member proximally of the obturator, the anchoring mechanism being moved to an expanded state in which an outer diameter of the anchoring mechanism exceeds an outer diameter of the needle when moved out of the lumen of the needle.
A pressure actuated valve comprises a first membrane (110) having a slit (112) extending through the membrane at a nonzero draft angle (0) relative to a perpendicular to a surface of the membrane, material of the membrane biasing the slit closed so that the slit remains closed when a fluid pressure applied to the membrane is below a threshold level and, when the fluid pressure is at least the threshold level, edges of the slit separate from one another to permit fluid flow through the membrane.
F16K 7/17 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure
F16K 15/14 - Check valves with flexible valve members
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
41 - Education, entertainment, sporting and cultural services
Goods & Services
Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus. Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth; orthopedic articles; suture materials; sex aids; massage apparatus; supportive bandages; furniture adapted for medical use. Education; providing of training; entertainment; sporting and cultural activities.
A valve may include (a) a housing (102) defining a valve lumen (116) adapted for fluid connection with a lumen of a catheter; (b) a substantially conical valve member (104) coupled to the housing and extending across the valve lumen to control flow therethrough; (c) a plurality of slits (106) extending through the valve member and separated from one another circumferentially around the valve member; and (d) a ramp formed (207) within a distal end of the valve lumen extending proximally from a distal tip of the valve member toward a ramp vertex separated from the distal tip by a predetermined distance.
A central venous access device comprising an extruded catheter shaft having one or more lumens, said catheter shaft comprising a polycarbonate polyurethane having a weight average molecular weight in excess of 90,000.
An access port for a catheter, comprises a housing including a needle opening extending to a fluid chamber defined within the housing and a self sealing septum mounted within the needle opening and engaging an interior perimeter of the needle opening and a compression element disposed between the septum and the housing directing a radially inward compressive force to the septum.
Surgical, medical, dental and veterinary apparatus and instruments, in particular catheters, vascular access ports, medical surgical instruments, namely, peripherally inserted central catheters, and dialysis catheters; artificial limbs, eyes and teeth; orthopaedic articles; suture materials; except for wound dressing products for wound care and wound treatment (with or without pharmaceutical substances, medicinal products, biological substances for the treatment of wounds).
A medical device valve comprises a housing including a lumen extending therethrough and a flow control membrane extending across the lumen to control the flow of fluid through the lumen. The membrane includes a plurality of slits extending therethrough so that, when acted upon by a pressure of at least a threshold magnitude, the slits open to permit flow through the lumen and, when not acted upon by a pressure of at least the predetermined magnitude, the slits are maintained closed by a biasing force to prevent flow through the lumen. Each of the slits extends along a curve wherein a distance between a first end of a first one of the slits and a first end of a second one of the slits is a minimum distance between the first and second slits.
A flow control element for a catheter valve comprises a membrane having a plurality of slits disposed therewithin. The slits are disposed substantially symmetrically about a midline of the membrane. At least one additional slit is disposed along a first axis which passes through the midline of the membrane and connects at least two of the plurality of slits.
