A spinal correction system for implantation in a patient, the system including a reciprocating adjuster and/or a resistance adjuster coupled to a stabilizing member, for example. The resistance adjuster includes a potential energy drive, a slide unit, and a resistance unit. The reciprocating adjuste
A spinal correction system for implantation in a patient, the system including a reciprocating adjuster and/or a resistance adjuster coupled to a stabilizing member, for example. The resistance adjuster includes a potential energy drive, a slide unit, and a resistance unit. The reciprocating adjuster includes a piston unit, a transfer unit coupled to the piston unit, and a return mechanism.
대표청구항▼
1. A spinal correction system for implantation in a patient, the system comprising: a correction anchor configured to be secured to a vertebra in a defect area of a spine;a stabilizing member configured to be secured against translation at the defect area of the spine;a reciprocating adjuster couple
1. A spinal correction system for implantation in a patient, the system comprising: a correction anchor configured to be secured to a vertebra in a defect area of a spine;a stabilizing member configured to be secured against translation at the defect area of the spine;a reciprocating adjuster coupled to the stabilizing member, the reciprocating adjuster including: a piston unit displaceable in a first direction, anda transfer unit coupled to the piston unit such that displacement of the piston unit in the first direction causes the transfer unit to be displaced in a second direction; anda connector extending from the reciprocating adjuster to define an effective length between the reciprocating adjuster and the correction anchor, the connector having a first end configured to be coupled to the transfer unit and a second end configured to be coupled to the correction anchor such that displacement of the transfer unit causes shortening of the effective length of the connector,wherein the piston unit includes a depressible shaft and the transfer unit includes a roller. 2. The system of claim 1, wherein the roller is a one-way drive clutch. 3. The system of claim 1, configured such that displacement of the roller winds the connector about the roller. 4. The system of claim 1, wherein the piston unit includes gearing and the transfer unit includes gearing for mating with the gearing of the piston unit. 5. The system of claim 1, wherein the piston unit includes a tooth member and the transfer unit includes a plurality of surface grooves configured to mate with the tooth member such that, upon displacement of the piston unit, the tooth member mates with the groove to displace the transfer unit. 6. The system of claim 1, wherein the piston unit is displaceable between a first position and a second position and the piston unit includes a return mechanism for returning the piston unit from the second position to the first position. 7. The system of claim 6, wherein the return mechanism includes a spring. 8. The system of claim 1, wherein the piston unit is coupled to a magnetic member. 9. The system of claim 8, further comprising an external magnetic drive for actuating the piston unit by displacing the magnetic member. 10. The system of claim 1, further comprising an implantable motor and an implantable power source, the motor being coupled to the piston unit. 11. The system of claim 10, wherein the power source includes an internal antennae antenna for receiving inductive power. 12. The system of claim 10, wherein the power source includes an implantable battery. 13. A method of correcting a spine, the method comprising: securing a correction anchor to a vertebra in a defect area of a spine;securing a stabilizing member against translation at the defect area of the spine; anddisplacing a depressible shaft in a piston unit of a reciprocating adjuster in a first direction to cause a roller in a transfer unit of the reciprocating adjuster to be displaced in a second direction, in turn, causing shortening of an effective length of a connector coupling the correction anchor and the reciprocating adjuster. 14. A spinal correction system for implantation in a patient, the system comprising: a correction anchor configured to be secured to a vertebra in a defect area of a spine;a stabilizing member configured to be secured against translation at the defect area of the spine;a resistance adjuster coupled to the stabilizing member, the resistance adjuster including: a potential energy drive,a slide unit coupled to the potential energy drive such that the potential energy drive exerts a displacement force on the slide unit thereby biasing the slide unit in a first direction, anda resistance unit coupled to the slide unit, the resistance unit being configured to selectively oppose the displacement force; anda connector extending from the resistance adjuster to define an effective length between the resistance adjuster and the correction anchor, the connector having a first end configured to be coupled to the slide unit and a second end configured to be coupled to the correction anchor such that displacement of the slide unit in the first direction causes shortening of the effective length of the connector. 15. The system of claim 14, wherein the potential energy drive is received coaxially about the slide unit. 16. The system of claim 14, wherein the resistance unit includes a tooth member and the slide unit includes a plurality of surface grooves configured to mate with the tooth member such that upon longitudinal displacement of the tooth member from a first position to a second position releases the resistance unit. 17. The system of claim 14, wherein the potential energy drive includes an expanding material. 18. The system of claim 17, wherein the expanding material is temperature activated. 19. The system of claim 17, wherein the expanding material is fluid activated. 20. The system of claim 14, wherein the potential energy drive includes a spring. 21. The system of claim 14, wherein the resistance unit includes hydrogel material. 22. The system of claim 14, wherein the resistance unit includes a biodegradable material. 23. The system of claim 14, wherein the resistance unit is coupled to a magnetic member. 24. The system of claim 23, further comprising an external magnetic drive for actuating the slide unit by displacing the magnetic member. 25. The system of claim 24, wherein the external magnetic drive includes a rotating magnet. 26. The system of claim 14, further comprising an implantable motor and an implantable power source, the motor being coupled to the piston unit. 27. The system of claim 26, wherein the power source includes an internal antenna for receiving inductive power. 28. The system of claim 26, wherein the power source includes an implantable battery. 29. A method of correcting a spine, the method comprising: securing a correction anchor to a vertebra in a defect area of a spine;securing a stabilizing member against translation at the defect area of the spine; andactuating a resistance unit of a resistance adjuster coupled to the stabilizing member such that the resistance adjuster selectively releases a displacement force provided by a potential energy drive coupled to a slide unit, the slide unit being displaced by the potential energy drive in a first direction to cause shortening in an effective length of a connector coupled between the resistance adjuster and the correction anchor. 30. A spinal correction system for implantation in a patient, the system comprising: a correction anchor configured to be secured to a vertebra in a defect area of a spine;a stabilizing member configured to be secured against translation at the defect area of the spine;a resistance adjuster coupled to the stabilizing member, the resistance adjuster including: a potential energy drive including an expanding material configured to expand after being subjected to an internal body environment of the patient, anda slide unit coupled to the potential energy drive such that the potential energy drive exerts a displacement force on the slide unit thereby biasing the slide unit in a first direction, anda connector extending from the resistance adjuster to define an effective length between the resistance adjuster and the correction anchor, the connector having a first end configured to be coupled to the slide unit and a second end configured to be coupled to the correction anchor such that displacement of the slide unit in the first direction causes shortening of the effective length of the connector.
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