Instrument for compression and distraction

摘要

A spinal stabilization system, method, and a surgical kit having a surgical extender apparatus for implanting a surgical screw are disclosed. The extender includes a housing having a distal end and a proximal end, a hollow interior passageway disposed between the distal end and the proximal end, a channel disposed along an exterior surface of the housing at least partially between the distal end and the proximal end and configured to at least partially expose the hollow interior passageway, an interior locking mechanism disposed on an interior surface of the housing and substantially adjacent the proximal end, wherein the interior locking mechanism is configured to allow attachment of at least one surgical tool, and at least one flexible member disposed substantially adjacent the distal end. The housing is configured to accommodate placement of a surgical screw implant. The surgical screw implant is secured to the housing using a mating feature in the surgical screw implant. The at least one flexible member is configured to retain the surgical screw implant. The mating feature is configured to control axial movement of the surgical screw implant.

主权项

1. An instrument for compression and distraction of at least two surgical screw implants, comprising:
two rails running in parallel and configured to be connected at one end using an elevated section and at the other end using a connection rod, at least one rail including a plurality of ratchet teeth; a housing, including a ratchet wheel, configured to slide between the two rails using a sliding mechanism disposed within each of the two rails; an actuator handle coupled to the ratchet wheel and configured to rotate the ratchet wheel to engage the ratchet teeth and advance the housing; a release handle configured to allow movement of the mechanism toward the elevated section and prevent a reverse motion of the housing; and a spring-loaded locking feature coupled with the elevated section that forms a first opening to receive a first screw extender that attaches to a first surgical screw implant, wherein the spring-loaded locking feature comprises two spring-loaded locking pins connected by a locking rod.