Spine Wave, Inc.

Eugene Avidano

Dylan Freund

Mark Serokosz

David Boisvert

Peter Barreiro

Daniel Vigliotti

Andrea Wright

Zachary Jordan Gregory

A modular tensioned spinal screw comprises a bone fastener having a threaded elongate shaft and a spherical head at an upper end of said shaft. A modular yoke for polyaxial attachment to the head of said bone fastener has an inner bore, an upper end configured to receive a connecting rod and a lower end configured to receive the head of the bone fastener. An axially movable radially expandable socket collar, and a saddle having a rod receiving cradle are supported within the yoke bore. A retention pin fixed to the yoke movably supports the saddle and a tension member within the bore. The tension member comprises a resilient biasing element oriented such that upward axial movement of the saddle produces a downward bias force on said saddle to compress the head of the bone fastener between said saddle and said socket collar in a provisional holding position.

Modular tensioned spinal screw

An inserter for attaching a modular yoke to a bone screw and for providing an indication of attachment, comprises a tubular body having a central lumen, distal and proximal ends, and an attachment portion for releasable attachment to a yoke having a bottom opening for receipt of a head of said bone screw. The inserter includes an inner shaft having a distal end configured to be received into the yoke, the shaft being axially movable within the lumen from first to second axial positions in response to the introduction of the bone screw head into the yoke bottom opening. An indicator button supported by the body is movable in response to axial movement of the shaft from a first indicator position indicating the first axial position of the shaft relative to the body to a second indicator position indicating the second axial position of the shaft relative to the body.

Modular spinal screw yoke inserter

A modular apparatus for extending a rod in an existing spinal construct comprises a modular rod connector for attachment to the existing rod and a modular rod extender that may be selectively attached to the rod connector. Each rod connector includes a spherical head that is formed to have the same size and configuration such that any selected modular rod extender may be attached to a selected rod connector. Each rod connector comprises an attachment portion having an opening for receipt of a portion of the rod of an existing spinal construct. Each modular rod extender comprises an extender body including a common modular attachment feature at one end for receipt of the spherical head of the selected rod connector, and an extension rod extending from an opposite end to extend the existing spinal rod.

Modular apparatus for extending an existing spinal construct

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 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. A locking sleeve is configured to axially slide on the tubular body over the attachment members, the locking sleeve including a locking element for releasably coupling the locking sleeve and the rod reduction member for selective independent and joint movement relative to the tubular body.

Threaded spinal rod reducer

A screw-based retractor comprises an elongate rack having a rack axis, a plurality of arms slidably supported for translational movement on the rack, and a plurality of blades, one each supported by a respective arm at a distal portion thereof. At least one of the arms includes at its distal portion a blade releasably attached thereto. Such at least one arm comprises a plurality of links each of which is configured to allow the blade supported by such arm to be moved in plural incrementally discrete positions with each such discrete position being selectively lockable. The blade may have a fixed or variable length. Such blade may be attached to a blade receptacle movably attached to the at least one arm in a manner to provide articulation of the blade receptacle and hence the attached blade about an articulation point spaced from and not located on such arm.

Screw-based retractor having arms with plural discrete selectively lockable positions

A screw-based retractor comprises an elongate rack having a rack axis, a plurality of arms slidably supported for translational movement on the rack, and a plurality of blades, one each supported by a respective arm at a distal portion thereof. At least one of the arms includes at its distal portion a blade releasably attached thereto. Such blade is attached to a blade receptacle movably attached to the at least one arm in a manner to provide articulation of the blade receptacle and hence the attached blade about an articulation point spaced from and not located on such arm. Such blade is additionally movable relative to the rack in multiple degrees of freedom.

Growing community of inventors

Stratford, CT, United States of America

Eugene Avidano