Abstract

A constant distraction force driven self-actuating growing rod system is provided for implantation on a corrected bony anatomy. The system includes components selected from the group consisting of at least one static rod, intermediate rod, or growth rod component; at least one compression spring component; at least one magnetic field-based spring actuation mechanism; at least one mechanical biasing mechanism, at least one casing, at least one guide rod and at least one spring actuator mechanism to apply an active distraction force; at least one magnetic field-based spring actuation mechanism and at least one dynamic sealing plug. During natural growth of the corrected bony anatomy, the growth rod component telescopes out of the intermediate rod component, creating a distraction force deficit that is corrected by causing the compression spring component to get compressed by the magnetic field-based spring actuation mechanism or the mechanical biasing mechanism, thereby maintaining an active distraction force.

IPC Classes  ?

• A61B 17/02 - Surgical instruments, devices or methods for holding wounds open, e.g. retractorsTractors
• A61B 17/00 - Surgical instruments, devices or methods

Abstract

The present disclosure relates to a constant distraction force driven self-actuating growing rod system (100) for implantation on a deformed bony anatomy. The system (100) comprises at least one static rod component (10); at least one intermediate rod component (20); at least one growth rod component (30); at least one compression spring component (40) adapted to apply an active distraction force onto the system (100) of the present disclosure; at least one magnetic field-based spring actuation mechanism (50) and at least one dynamic sealing plug (60). During the natural growth of the deformed bony anatomy, the growth rod component (10) telescopes out of the intermediate rod component (20), creating a distraction force deficit in the system (100); the distraction force deficit being corrected by causing the compression spring component (40) to get compressed by means of the magnetic field-based spring actuation mechanism (50); thereby maintaining an active distraction force onto the system (100).

IPC Classes  ?

• A61B 17/70 - Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant

Abstract

An anti-splay bone anchor is provided. The anti-splay bone anchor comprises a screw shank, a screw head and a locking cap member as the primary components. The screw head comprises a first opposing member having a first profile and a second opposing member having a second profile; a through hole for receiving the screw shank there-through. The locking cap member comprises a body, a through hole, a set screw and a first and a second tab. The through hole has threads on the inner surface which is adapted to threadably receive the set screw having threads on the outer surface. The first tab and the second tab, each extending radially outward from the locking cap member, have a third and a fourth profile which are complimentary to the first profile and the second profile, respectively.

IPC Classes  ?

• A61B 17/70 - Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
• A61B 17/86 - Pins or screws

Abstract

b) to achieve effective isolation of the incompressible and compressible fluids. The present miniature pressure compensating device (10) has a volume below 13 cc.

IPC Classes  ?

• F15B 1/24 - Accumulators using a gas cushionGas charging devicesIndicators or floats therefor with rigid separating means, e.g. pistons
• F15B 1/22 - Liquid port constructions
• F15B 1/04 - Accumulators
• F15B 1/08 - Accumulators using a gas cushionGas charging devicesIndicators or floats therefor

Abstract

b).

IPC Classes  ?

• A61B 17/70 - Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
• A61B 17/00 - Surgical instruments, devices or methods

Abstract

The present disclosure relates to a miniature pressure compensating device (10), for balancing pressure fluctuations in a hydraulic system, comprising at least one shell (12), at least one hollow hydraulic cylinder (16), at least one reciprocating piston (26) and at least one non-return valve (NRV) (28). The hydraulic cylinder (16) comprises at least one dual charging valve port (22) for facilitating charging of both said compressible and incompressible fluid and at least one built-in two-tier sealing mechanism (24) comprising at least one metal-to-metal seal (24a) and at least one secondary seal (24b) to achieve effective isolation of the incompressible and compressible fluids. The present miniature pressure compensating device (10) has a volume below 13 cc.

IPC Classes  ?

• F15B 1/04 - Accumulators

Abstract

The present disclosure relates to self-actuating growing rod systems (100) for the correction of orthopedic deformities. The system comprises at least one static rod (2), at least one growth rod (6), at least one sealing component (8), at least one fluid reservoir (10), at least one injection port (14) and at least one pressure compensating mechanism (12) which is adapted to cause net elongation of the growth rod (6). The system of the present disclosure (100) is implanted onto the bony anatomy after bringing the deformed bony anatomy to the expected position. The system of the present disclosure (100) is then surgically implanted onto the corrected bony anatomy. As growth occurs, the system of the present disclosure (100) distracts; thereby enabling growth and maintaining the deformity correction.

IPC Classes  ?

• A61B 17/56 - Surgical instruments or methods for treatment of bones or jointsDevices specially adapted therefor
• A61B 17/80 - Cortical plates

Abstract

A self-actuating growing rod systems for the correction of orthopedic deformities. The system comprises at least one static rod, at least one growth rod, at least one sealing component, at least one fluid reservoir, at least one injection port and at least one pressure compensating mechanism which is adapted to cause net elongation of the growth rod. The system of the present disclosure is implanted onto the bony anatomy after bringing the deformed bony anatomy to the expected position. The system of the present disclosure is then surgically implanted onto the corrected bony anatomy. As growth occurs, the system of the present disclosure distracts; thereby enabling growth and maintaining the deformity correction.

IPC Classes  ?

• A61B 17/70 - Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
• A61B 17/68 - Internal fixation devices