US5306309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinal disk implant and implantation kit
Assignee: Zimmer Dental Inc
•
Filing: 1992-05-04
•
Granted: 1994-04-26
•
Expires: 2012-05-04
Abstract
Abstract A spinal disk implant comprises a solid body having four faces arranged to define a right-rectangular solid body and two faces that define the ends of the solid body. The faces that define the right-rectangular body include two opposed side faces and two opposed transverse faces. The transverse faces have a central region with three-dimensional features thereon and an anterior platform region lying along an anterior margin of the transverse faces. The faces defining the ends of the solid body include a convexly curved anterior face and a posterior face. The solid body is made of a biocompatible synthetic material. A kit that may be used by a surgeon includes an implant and an implant delivery tool dimensioned to releasably hold the implant. The delivery tool preferably has a pair of flexible opposed arms extending from a base, separated so that the implant can fit between the arms, and may have a breakable release band extending around the implant to hold it in place until a weak link in the release band is intentionally broken during implantation.
Inventors
- 👤 William R. Wagner
- 👤 Richard L. Lariviere
- 👤 Scott D. Slabbekoorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:20
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/02; A61L27/12; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442; A61F2/4455; A61F2/4465; A61F2/46; A61F2/4603; A61F2/4611; A61L27/04; A61L27/06; A61L27/10; A61B; A61B50/00; A61B50/30; A61F2/30767; A61F2/3094; A61F2/30965; A61F2/28; A61F2002/2817; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30006; A61F2002/30011; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30125; A61F2002/30131; A61F2002/30138; A61F2002/30158; A61F2002/30182; A61F2002/30187; A61F2002/30199; A61F2002/30224; A61F2002/3023; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30535; A61F2002/30561; A61F2002/30667; A61F2002/30677; A61F2/30771; A61F2002/30841; A61F2002/30843; A61F2002/30968; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0008; A61F2230/0013; A61F2230/0017; A61F2230/0026; A61F2230/0028; A61F2230/0034; A61F2230/0063; A61F2230/0069; A61F2250/00; A61F2250/0014; A61F2250/0015; A61F2250/0023; A61F2250/0058; A61F2250/0071; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00179; A61F2310/00293; A61F2310/00389; A61F2310/00395; A61F2310/00592; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/91; Y10S606/914
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
180 words
A spinal disk implant, comprising a solid body having a convexly curved anterior face, the anterior face having a curvature of about that of the anterior surface of a human vertebra and having an anterior face lateral margin and a curved anterior face transverse margin; a posterior face spaced apart from the anterior face and having a posterior face lateral margin and a posterior face transverse margin; a pair of generally parallel, spaced apart, opposed side faces extending between the lateral margins of the anterior face and the posterior face; and a pair of spaced apart, opposed transverse faces extending between the transverse margins of the anterior face and the posterior face, each transverse face having an anterior platform and at least one of the transverse faces having an engagement region located posterior of the anterior platform, the engagement region having three-dimensional features thereon raised above the transverse face, a width of the anterior platform being about that of a thickness of anterior cortical bone of a human vertebra, the spinal disk implant being made of a biocompatible synthetic material.
Claim 2
Dependent Claim
180 words
A spinal disk implant, comprising a solid body having a convexly curved anterior face, the anterior face having a curvature of about that of the anterior surface of a human vertebra and having an anterior face lateral margin and a curved anterior face transverse margin; a posterior face spaced apart from the anterior face and having a posterior face lateral margin and a posterior face transverse margin; a pair of generally parallel, spaced apart, opposed side faces extending between the lateral margins of the anterior face and the posterior face; and a pair of spaced apart, opposed transverse faces extending between the transverse margins of the anterior face and the posterior face, each transverse face having an anterior platform and at least one of the transverse faces having an engagement region located posterior of the anterior platform, the engagement region having three-dimensional features thereon raised above the transverse face, a width of the anterior platform being about that of a thickness of anterior cortical bone of a human vertebra, the spinal disk implant being made of a biocompatible synthetic material.
Claim 3
Dependent Claim
12 words
The implant of claim 1, wherein the posterior face is convexly curved.
Claim 4
Dependent Claim
11 words
The implant of claim 1, wherein the posterior face is flat.
Claim 5
Dependent Claim
12 words
The implant of claim 1, wherein the transverse faces are generally parallel.
Claim 6
Dependent Claim
12 words
The implant of claim 1, wherein the transverse faces are convexly bowed.
Claim 7
Dependent Claim
19 words
The implant of claim 1, wherein the posterior face is convexly curved symmetrically with respect to the anterior face.
Claim 8
Dependent Claim
24 words
The implant of claim 6, wherein the solid body is symmetric about a plane lying halfway between the anterior face and the posterior face.
Claim 9
Dependent Claim
13 words
The implant of claim 1, wherein both transverse faces have three-dimensional features thereon.
Claim 10
Dependent Claim
20 words
The implant of claim 8, wherein the solid body is symmetric about a plane lying halfway between the transverse faces.
Claim 11
Dependent Claim
14 words
The implant of claim 9, wherein the transverse faces are parallel to each other.
Claim 12
Dependent Claim
14 words
The implant of claim 9, wherein the transverse faces are tapered toward each other.
Claim 13
Dependent Claim
30 words
The implant of claim 1, wherein the solid body is formed of a material selected from the group consisting of a ceramic, a metal, a polymer, and a composite material.
Claim 14
Dependent Claim
14 words
The implant of claim 1, wherein the solid body is formed of a ceramic.
Claim 15
Dependent Claim
14 words
The implant of claim 1, wherein the solid body is formed of caclium phosphate.
Claim 16
Dependent Claim
13 words
The implant of claim 1, wherein the solid body is formed of hydroxylapatite.
Claim 17
Dependent Claim
25 words
The implant of claim 1, wherein the solid body is formed of a material selected from the group consisting of titanium and a titanium alloy.
Claim 18
Dependent Claim
19 words
The implant of claim 1, wherein the solid body is formed of a material that bonds to natural bone.
Claim 19
Dependent Claim
25 words
The implant of claim 1, wherein the solid body is formed at least in part of a material that is at least in part microporous.
Claim 20
Dependent Claim
17 words
The implant of claim 18, wherein the body has a central dense portion and a microporous coating.
Claim 21
Dependent Claim
109 words
A spinal disk implant, comprising a solid body having: four faces arranged to define a right-rectangular body, including two opposed side faces and two opposed transverse faces, at least one of the transverse faces having a central region with three-dimensional features thereon raised above the transverse face and an anterior platform region lying along an anterior margin of the transverse face; a convexly curved anterior face defining one end of the right-rectangular body; and a posterior face defining the other end of the right-rectangular body, the solid body being made of a material selected from the group consisting of a ceramic, a metal, a polymer, and a composite material.
Claim 22
Dependent Claim
109 words
A spinal disk implant, comprising a solid body having: four faces arranged to define a right-rectangular body, including two opposed side faces and two opposed transverse faces, at least one of the transverse faces having a central region with three-dimensional features thereon raised above the transverse face and an anterior platform region lying along an anterior margin of the transverse face; a convexly curved anterior face defining one end of the right-rectangular body; and a posterior face defining the other end of the right-rectangular body, the solid body being made of a material selected from the group consisting of a ceramic, a metal, a polymer, and a composite material.
Claim 23
Dependent Claim
20 words
The implant of claim 20, further including a posterior platform region lying along a posterior margin of the transverse face.
Claim 24
Dependent Claim
12 words
The implant of claim 20, wherein the posterior face is convexly curved.
Claim 25
Dependent Claim
24 words
The implant of claim 20, wherein the solid body is symmetric about a plane lying halfway between the anterior face and the posterior face.
Claim 26
Dependent Claim
18 words
The implant of claim 20, wherein both transverse faces have three-dimensional features, anterior platforms, and posterior platforms thereon.
Claim 27
Dependent Claim
30 words
The implant of claim 20, wherein the solid body is formed of a material selected from the group consisting of a ceramic, a metal, a polymer, and a composite material.
Claim 28
Dependent Claim
14 words
The implant of claim 20, wherein the solid body is formed of a ceramic.
Claim 29
Dependent Claim
14 words
The implant of claim 20, wherein the solid body is formed of calcium phosphate.
Claim 30
Dependent Claim
13 words
The implant of claim 20, wherein the solid body is formed of hydroxylapatite.
Claim 31
Dependent Claim
24 words
The implant of claim 20. wherein the solid body formed of a material selected from the group consisting of titanium and a titanium alloy.
Claim 32
Dependent Claim
19 words
The implant of claim 20, wherein the solid body is formed of a material that bonds to natural bone.
Claim 33
Dependent Claim
25 words
The implant of claim 20, wherein the solid body is formed at least in part of a material that is at least in part microporous.
Claim 34
Dependent Claim
17 words
The implant of claim 31, wherein the body has a central dense portion and a microporous coating.
Claim 35
Dependent Claim
189 words
A spinal disk implant, comprising a solid body having a convexly curved anterior face, the anterior face having a curvature of about that of the anterior surface of a human vertebra and having an anterior face lateral margin and a curved anterior face transverse margin; a posterior face spaced apart from the anterior face and having a posterior face lateral margin and a posterior face transverse margin; a pair of generally parallel, spaced apart, opposed side faces extending between the lateral margins of the anterior face and the posterior face; and pair of spaced a part, opposed transverse faces extending between the transverse margins of the anterior face and the posterior face, each transverse face having an anterior platform and at least one of the transverses faces having an engagement region located posterior of the anterior platform, the engagement region having three-dimensional features thereon raised above the transverse face, a width of the anterior platform being about that of a thickness of anterior cortical bone of a human vertebra, the spinal disk implant being made of a nonmetallic material selected from the group consisting of calcium phosphate and hydroxylapatite.
Claim 36
Dependent Claim
189 words
A spinal disk implant, comprising a solid body having a convexly curved anterior face, the anterior face having a curvature of about that of the anterior surface of a human vertebra and having an anterior face lateral margin and a curved anterior face transverse margin; a posterior face spaced apart from the anterior face and having a posterior face lateral margin and a posterior face transverse margin; a pair of generally parallel, spaced apart, opposed side faces extending between the lateral margins of the anterior face and the posterior face; and pair of spaced a part, opposed transverse faces extending between the transverse margins of the anterior face and the posterior face, each transverse face having an anterior platform and at least one of the transverses faces having an engagement region located posterior of the anterior platform, the engagement region having three-dimensional features thereon raised above the transverse face, a width of the anterior platform being about that of a thickness of anterior cortical bone of a human vertebra, the spinal disk implant being made of a nonmetallic material selected from the group consisting of calcium phosphate and hydroxylapatite.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-04-25 | 1997-10-25 | 1998-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-25 | 2001-10-25 | 2002-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-25 | 2005-10-25 | 2006-04-26 | $7700.00 | Window Closed / Lapsed |