Pioneer Surgical Technology, Inc.

Xtant Medical Holdings, Inc.

Scott J Perrow

Brad Fredin

Steven A Schopler

Daniel Ryan Mermuys

Bruce Anthony Riceman

Joseph Mohar

Jacob Anton Colantonio

Craig Filizetti

Matthew N Songer

Brian Patrick Janowski

Matthew Peter Gephart

Francis J Korhonen

Lawrence Mosca

Jeffrey L Trudeau

Gregory Berrevoets

Reuben J Robie

Michael D Kakuk

Christian A Roose

Craig Filzetti

A retraction system and method are provided for retracting tissues surrounding a surgical site. In one aspect, a method including engaging slide connections between a guide dilator and a plurality of tissue engaging members and sequentially enlarging an incision using the guide dilator and the plurality of tissue engaging members. In another aspect, a method of inserting a plurality of tissue engaging members into an incision including fixing tip portions of the plurality of tissue engaging members in an insertion configuration, advancing the tip portions into an incision, and restricting movement of the tip portions away from the insertion configuration. A guide dilator system comprising an elongate body, a plurality of tissue engaging members, and slide connections between the elongate body and the tissue engaging members is also provided.

Apparatus and method for enlarging an incision

An intervertebral implant for being implanted between adjacent vertebrae is provided. The implant includes a generally elongate implant body having a length extending between opposite longitudinal ends thereof, a superior face and an inferior face. The superior face and inferior face include cortical teeth adjacent to the implant body longitudinal ends. Additionally, the superior and inferior faces include longitudinally central teeth intermediate the cortical teeth and have bone engaging ends. The central teeth have a sharper configuration than that of the cortical teeth bone engaging ends for biting into the softer central bone material of the vertebrae. The cortical teeth are arranged in a first density per unit area and the central teeth are arranged in a second density per unit area that is less than the first density.

Intervertebral implant

In one aspect, a bone plate system is provided that includes a bone plate body having a throughbore and a bone screw. The bone plate system includes a slider slidably connected to the bone plate body to slide between a clearance position wherein the slider permits a bone screw head portion to be advanced into the throughbore and seated against the bone plate body and an interference position wherein the slider inhibits bone screw back out from the throughbore. The bone plate system includes a resilient pin and the slider has a surface configured to deflect the resilient pin as the bone screw head portion shifts the slider from the interference position toward the clearance position. The deflected resilient pin urges the slider from the clearance position toward the interference position upon the bone anchor head portion seating against the bone plate body in the throughbore.

Bone plate system

In one aspect, a bone anchor assembly is provided having a bone anchor with a head, a resilient locking cap extending about a portion of the bone anchor head, and a cap drive member having a depending annular wall. In another form, a bone plate system is provided including a bone plate having an elongated throughbore and a resilient support member received therein. In another aspect, an insertion device is provided for manipulating and inserting a spinal device at or within a spinal joint. The insertion device is configured to actively pivot the implant about the implant gripping end of the device and to allow manipulation and release of the implant in any pivoted orientation from approximately 0 to 90 degrees.

Instrument for inserting a spinal device

An expandable interbody device for implantation within an intervertebral space is provided, together with methods and tools for use therewith. The interbody devices of the present invention include upper and lower bearing members configured to expand via an expansion mechanism configured to allow the insertion of osteoconductive materials and other structures into the interior of the interbody device before and after implantation, and before and after expansion of the interbody device. The insertion tool is configured expand the interbody device and to allow insertion of materials into the interbody device through a protected pathway.

Systems and methods for inserting an expandable intervertebral device

In accordance to one aspect of the present disclosure, a driver for a bone screw is provided that includes an inner shaft and a distal drive head of the inner shaft. The drive head is configured to fit in a drive recess of a bone screw to form a mating connection therewith. The driver further includes at least one outer, resilient locking member shiftable along the inner shaft from a proximal, unlocked position to a distal, locked position. The resilient locking member has a locking portion that contacts and is urged outwardly by a proximal ramp surface of the drive head as the locking member shifts distally from the unlocked position to the locked position to secure the bone screw onto the drive head.

Driver for a bone screw

A bone plate system having a retainer for resisting back-out of a bone anchor from a throughbore of a bone plate is provided. In one aspect, a bone plate system having a resilient retainer disposed in a bone plate throughbore with a pair of elongate arm portions of the resilient retainer extending along opposite sides of the throughbore. In another aspect, a bone plate system having a resilient retainer with a pair of elongate interference portions completely exposed in the throughbore and spaced from each other across the throughbore to retain a head of a bone anchor received in the throughbore. In addition, a bone plate system having a resilient retainer with a pair of opposite end portions disposed within a groove of a throughbore wall such that a bone anchor may be inserted into the throughbore without contacting either of the opposite end portions of the retainer.

Bone plate systems are provided for surgical implants and bone repair. The bone plate is multi-tiered for receiving bone anchors screws for securing a plurality of bones or bone fragments in a desired relationship. The plate members include throughbores for receiving a pivot base therein, with head ends of the bone anchors being secured in the pivot bases. The throughbores may permit and define a translation path for the pivot base and the bone anchor secured therein relative to the plate. Pivot members extending between the pivot base and the plate member facilitate pivoting and optional translation of the pivot base relative to the plate. With the bone anchor seated within the pivot base, an apparatus for inhibiting screw back out is employed.

A bone plate system is provided that includes bone plates and bone anchor assemblies for being inserted into bone plate bores to secure the bone plates to one or more bones. In one aspect, the bone plate system includes a bone anchor assembly having a locking cap and a locking fastener connected to a head portion of a bone anchor. The bone anchor assembly is driven into a bone plate bore before the locking fastener is shifted to expand the locking cap and fix the bone anchor assembly within the bore. In another aspect, the bone plate system includes a bone anchor assembly having a locking cap that deflects radially inward due to contact with the bone plate at large bone anchor assembly insertion angles. In addition, a bone anchor assembly having a preassembled condition with a locking cap resisting back out of a locking fastener.

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Ishpeming, MI, United States of America

Scott J Perrow