THREADED SPINAL ROD REDUCER
First Claim
1. A spinal rod reducer for reducing a spinal rod into a rod-receiving opening of a bone anchor, comprising;
- an elongate tubular body having a proximal end, a distal end and a lumen extending therethrough, and a pair of spaced flexible anchor attachment members adjacent the distal end of said tubular body, said spaced attachment members defining a slot therebetween, the distal end of said attachment members being configured to engage said bone anchor in a manner to align said slot with said rod-receiving opening of said bone anchor;
a threaded rod reduction member supported for axial movement within said lumen, said rod reduction member including a rod contacting surface movable to a position between said attachment members;
a locking sleeve supported for axial movement on said tubular body, said locking sleeve including a pair of spaced locking members defining a channel therebetween, said locking sleeve channel being aligned with said rod reduction member slot during axial movement of said locking sleeve, said locking members being configured to respectively slidably engage said attachment members during said axial movement of said locking sleeve, said locking sleeve including a locking element for releasably securing said locking sleeve in a fixed axial position relative to said tubular body attachment members;
a threaded rotatable reduction knob threadably engaged with said reduction rod member, rotation of said reduction knob causing said rod reduction member to move axially relative to said tubular body and thereby move said rod contacting surface within said slot between said attachment members, movement of said rod reduction member being independent of movement of said locking sleeve.
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Accused Products
Abstract
A spinal rod reducer for reducing a rod into a rod-receiving opening of a bone anchor comprises an elongate tubular body having a lumen extending therethrough and a pair of spaced flexible anchor attachment members at the distal end of the tubular body. A threaded rod reduction member having a rod contacting surface is supported for axial movement within the lumen. A locking sleeve for slidable engagement with the attachment members to fixedly secure the attachment members to the bone anchor is supported for axial movement on the tubular body. A threaded rotatable reduction knob is threadably engaged with the rod reduction member rotation of which causes the rod reduction member with the rod contacting surface to move axially distally toward the bone anchor. Movement of the locking sleeve is independent of the movement of the rod reduction member.
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Citations
12 Claims
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1. A spinal rod reducer for reducing a spinal rod into a rod-receiving opening of a bone anchor, comprising;
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an elongate tubular body having a proximal end, a distal end and a lumen extending therethrough, and a pair of spaced flexible anchor attachment members adjacent the distal end of said tubular body, said spaced attachment members defining a slot therebetween, the distal end of said attachment members being configured to engage said bone anchor in a manner to align said slot with said rod-receiving opening of said bone anchor; a threaded rod reduction member supported for axial movement within said lumen, said rod reduction member including a rod contacting surface movable to a position between said attachment members; a locking sleeve supported for axial movement on said tubular body, said locking sleeve including a pair of spaced locking members defining a channel therebetween, said locking sleeve channel being aligned with said rod reduction member slot during axial movement of said locking sleeve, said locking members being configured to respectively slidably engage said attachment members during said axial movement of said locking sleeve, said locking sleeve including a locking element for releasably securing said locking sleeve in a fixed axial position relative to said tubular body attachment members; a threaded rotatable reduction knob threadably engaged with said reduction rod member, rotation of said reduction knob causing said rod reduction member to move axially relative to said tubular body and thereby move said rod contacting surface within said slot between said attachment members, movement of said rod reduction member being independent of movement of said locking sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification