US 10,376,379 B2Granted

Bone stabilization implants, instruments, and methods

AssigneeZavation Medical Products, LLC

InventorMatthew Songer

Life of this patent

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Abstract

Instruments, kits, and methods are disclosed for installing an implant spacer through an incision and down a surgical corridor. The instruments also serve to align a drill guide and align and insert a spacer stabilizer for stabilization of adjacent bone portions. An inserter instrument comprises an elongated guide bar body having a guide portion for aligning instruments with said spacer and for introducing a stabilizer to secure the spacer in a predetermined position between the bone portions. In preferred embodiments a stabilizer implant portion comprising a base wall separated by a retaining member by a web wall is introduced into a pre-bored hole in a bone and secured with a stabilizer anchor extending through a central bore. Included is a retractable graft block for securing graft material within an aperture of a spacer during insertion of the spacer.

Claims21

Dependent claims

An apparatus for stabilization of bones comprising:

a spacer implant portion;
said spacer implant portion comprising a body;
said body having a height sized to fit within a portion of an intervertebral disc space;
said body comprising opposed first and second surface portions for spacing adjacent vertebral bodies;
a pair of opposed channels extending into said opposed first and second surface portions;
one or more stabilizer implant portions for extending between said spacer implant portion and an intervertebral body;
said stabilizer implant portion comprising a base wall captured within one of said opposed channels of said body of said spacer implant portion;
said stabilizer implant portion comprising a cylindrical wall;
said cylindrical wall comprising a central bore sized for holding a bone screw therein;
said cylindrical wall spaced from said base wall;
a web wall extending between said cylindrical wall and said base wall;
said cylindrical wall comprising a leading end;
said web wall comprising a sharp leading edge;
said sharp leading edge of said web wall generally aligned with said leading end of said cylindrical wall;
said web wall extending to a proximal end of said cylindrical wall;
said stabilizer implant portion comprising a proximal face on said web wall generally aligned with a proximal end of said spacer implant portion in an operative relationship;
a stabilizer bone screw separable from said stabilizer cylindrical wall and operable to secure said stabilizer implant portion and said spacer implant portion at a predetermined position with an intervertebral space;
said stabilizer bone screw at least partially seated within said central bore;
said stabilizer bone screw comprising a drive head;
said drive head housed within said central bore of said cylindrical wall in a locked state;
said drive head sized to advance against said stabilizer implant portion;
said stabilizer bone screw comprising bone screw threads operable to thread into bone thereby securing said stabilizer implant portion, said spacer implant portion, and said stabilizer bone screw in a predetermined position within an intervertebral space;
and
said bone screw threads passable through said central bore of said cylindrical wall for threading said stabilizer bone screw into bone in a locked state.

21 more elements

An apparatus for stabilization of bones comprising:

a spacer implant portion;
said spacer implant portion comprising a body;
said body having a height sized to fit within a portion of an intervertebral disc space;
said body comprising opposed first and second surface portions for spacing adjacent vertebral bodies;
a pair of opposed channels extending into said opposed first and second surface portions;
one or more stabilizer implant portions for extending between said spacer implant portion and an intervertebral body;
said stabilizer implant portion comprising a base wall captured within one of said opposed channels of said body of said spacer implant portion in an operative configuration;
said stabilizer implant portion comprising a locking sleeve;
said locking sleeve comprising a central bore;
said locking sleeve spaced from said base wall;
a web wall extending between said locking sleeve and said base wall;
said web wall having a width smaller than said base wall and said locking sleeve;
said locking sleeve comprising a leading end;
said web wall comprising a sharp leading edge;
said sharp leading edge of said web wall generally aligned with said leading end of said locking sleeve;
said web wall extending to a proximal end of said locking sleeve;
a stabilizer bone screw separable from said stabilizer cylindrical wall and operable to secure said stabilizer implant portion and said spacer implant portion at a predetermined position within an intervertebral space;
said locking sleeve sized for holding said stabilizer bone screw therein;
said stabilizer bone screw at least partially seated within said central bore;
said stabilizer bone screw comprising a drive head;
said drive head housed within said central bore of said cylindrical wall in a locked state;
and said stabilizer bone screw comprising bone screw threads operable to thread into bone thereby securing said stabilizer implant portion, said spacer implant portion, and said stabilizer bone screw in a predetermined position within an intervertebral space;
and said bone screw threads passable through said central bore of said cylindrical wall for threading into bone in a locked state.

20 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/343,191Filed 3 Nov 2016 · continuation in part
Priority: 22 Jan 2009
Published: US 2017/0065427 A19 Mar 2017
Granted: 13 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification38 codes

A61F 2/4455
For the spine, e.g. vertebrae or spinal discs: for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion…
A61B 17/7076
Tools specially adapted for spinal fixation operations other than for bone removal or filler handling: for driving, positioning or assembling…
A61F 2/4611
For insertion or extraction of endoprosthetic joints or of accessories thereof: of spinal prostheses
A61B 17/1615
Component parts: drill bits, i.e. rotating tools extending from a handpiece to contact the worked material

Family

Application61/146,616Us provisional application · filed 22 Jan 2009
Application12/692,503Parent of this continuation-in-part · filed 22 Jan 2010
Application13/347,526Parent of this continuation-in-part · filed 10 Jan 2012
US 8,157,865 B2Parent of this continuation-in-part · filed 17 Apr 2012
Application61/862,671Us provisional application · filed 6 Aug 2013
Application14/453,520Parent of this continuation-in-part · filed 6 Aug 2014
Application62/249,985Us provisional application · filed 3 Nov 2015
US 9,486,324 B2Parent of this continuation-in-part · filed 8 Nov 2016
US 2017/0065427 A1Pre-grant publication · published 9 Mar 2017
US 9,592,131 B2Parent of this continuation-in-part
US 2010/0185292 A1Published application
US 2012/0215315 A1Published application
US 2014/0364917 A1Published application
US 10,376,379 B2This patent

From the US filing history. Foreign family members aren’t listed.