SPINAL IMPLANT

• US 20080015701A1
• Filed: 07/06/2007
• Published: 01/17/2008
• Est. Priority Date: 11/09/2001
• Status: Active Grant

• Current Assignee: Zimmer Biomet Spine, Inc. (Zimvie Incorporated)
• Original Assignee: Zimmer Spine, Inc. (Zimmer Biomet Holdings, Inc.)
• Inventors: Garcia, Javier, Wagner, Erik, Krueger, David
• Granted Patent: US 8,221,503 B2
• Time in Patent Office: Days
• US Class Current: 623/17.16
• CPC Class Codes: A61B 17/0206 with antagonistic arms as supports for retractor elements
• CPC Class Codes: A61B 17/025 Joint distractors
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/88 Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices A61B17/7074 takes precedence
• CPC Class Codes: A61B 2017/0256 for the spine
• CPC Class Codes: A61B 2090/062 penetration depth
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/30965 Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
• CPC Class Codes: A61F 2/4455 for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages intervertebral discs A61F2/442
• CPC Class Codes: A61F 2/447 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/3008 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2002/30331 made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2002/30387 Dovetail connection
• CPC Class Codes: A61F 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30492 using a locking pin
• CPC Class Codes: A61F 2002/305 Snap connection
• CPC Class Codes: A61F 2002/30777 : Oblong apertures
• CPC Class Codes: A61F 2002/30785 : parallel
• CPC Class Codes: A61F 2002/30789 : perpendicular with respect to each other
• CPC Class Codes: A61F 2002/3082 : Grooves
• CPC Class Codes: A61F 2002/30904 : serrated profile, i.e. saw-toothed
• CPC Class Codes: A61F 2002/30922 : Hardened surfaces
• CPC Class Codes: A61F 2002/30952 : using CAD-CAM techniques or NC-techniques
• CPC Class Codes: A61F 2002/4627 : with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
• CPC Class Codes: A61F 2210/0004 : bioabsorbable
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0033 : made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2220/0041 : using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2250/0098 : radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2310/00017 : Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 : Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00293 : containing a phosphorus-containing compound, e.g. apatite
• CPC Class Codes: A61F 2310/00359 : Bone or bony tissue
• CPC Class Codes: A61F 2310/00616 : Coating made of titanium oxide or hydroxides
• CPC Class Codes: A61F 2310/00796 : Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite

Abstract

A spinal implant may be made of two or more implant members. In an embodiment, implant members may be joined together by a rotational connection that inhibits separation of the members as well as axial movement of the members relative to each other. Implant members may be coupled together by a pin or pins, adhesive, or other fasteners to inhibit separation and/or rotation of the members relative to each other.

Claims

1-118. -118. (canceled)

119. A method, comprising:

inserting a first implant in a first disc space between two vertebrae;

packing bone graft material in a space proximate the first implant; and

inserting a second implant in a second disc space between the two vertebrae.

120. The method of claim 119, wherein the bone graft material comprises cancellous bone.

121. The method of claim 119, wherein the second implant comprises a tapered anterior end to facilitate insertion between the two vertebrae.

122. The method of claim 119, wherein inserting the second implant forces the bone graft material between the second implant and the first implant.

123. The method of claim 119, wherein inserting the second implant forces the bone graft material between the second implant and remaining disc.

186. The method of claim 119, further comprising the step of removing portions of spinous process prior to inserting the first implant.

187. The method of claim 119, further comprising the step of removing osteophytes prior to inserting the first implant.

188. The method of claim 119, further comprising the step of distracting the distance between the two vertebrae.

124. A method, comprising:

positioning a distractor in a first disc space between two vertebrae;

removing portions of bone proximate a second disc space;

coupling a first implant to a first implant inserter;

positioning the first implant in the second disc space;

releasing the first implant from the first implant inserter; and

removing the distractor from the first disc space.

125. The method of claim 124, further comprising:

removing portions of bone proximate the first disc space;

coupling a second implant to a second implant inserter;

positioning the second implant in the first disc space; and

releasing the second implant from the second implant inserter.

126. The method of claim 124, further comprising:

removing portions of bone proximate the first disc space;

packing bone graft material in a space proximate the first implant;

coupling a second implant to a second implant inserter;

positioning the second implant in the first disc space; and

releasing the second implant from the second implant inserter.

127. The method of claim 126, wherein the bone graft material comprises cancellous bone.

128-185. -185. (canceled)

189. A method for stabilizing two adjacent vertebrae, comprising the steps of:

making an incision near the posterior side of two adjacent vertebrae;

removing disc material from a first side of a disc to form a first disc space;

removing some portion of vertebral bone proximate the first disc space;

attaching a first implant to an inserter;

inserting the first implant in the first disc space with the inserter;

releasing the first implant from the inserter;

packing bone graft material proximate the first implant;

removing disc material from a second side of the disc to form a second disc space;

removing some portion of vertebral bone proximate the second disc space;

attaching a second implant to the inserter;

inserting the second implant in the second disc space with the inserter;

releasing the second implant from the inserter; and

packing bone graft material proximate the second implant.

190. The method of claim 189, wherein the bone graft material comprises cancellous bone.

191. The method of claim 189, wherein the first implant and the second implant comprise a tapered anterior end to facilitate insertion between the two vertebrae.

192. The method of claim 189, wherein inserting the second implant forces the bone graft material between the second implant and the first implant.

193. The method of claim 189, wherein inserting the second implant forces the bone graft material between the second implant and remaining disc.

194. The method of claim 189, further comprising the step of removing portions of spinous process prior to inserting the first implant.

195. The method of claim 189, further comprising the step of removing osteophytes prior to inserting the first implant.

196. The method of claim 189, further comprising the step of distracting the distance between the two adjacent vertebrae.