US6554863B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intervertebral allograft spacer
Assignee: Synthes USA LLC
•
Filing: 2001-07-06
•
Granted: 2003-04-29
•
Expires: 2021-07-06
Abstract
Abstract An allogenic intervertebral implant for fusing vertebrae is disclosed. The implant is a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra. The implant has a wedge-shaped profile to restore disc height and the natural curvature of the spine. The top and bottom surfaces of the implant have a plurality of teeth to resist expulsion and provide initial stability. The implant according to the present invention provides initial stability need for fusion without stress shielding.
Inventors
- 👤 David C. Paul
- 👤 Hansjuerg W. Emch
- 👤 Beat Schenk
- 👤 Joseph A. Yaccarino, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:41
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/006; A; A61; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/30; A61F2/3094; A61F2/30942; A61F2/44; A61F2/4455; A61F2/30721; A61F2/30724; A61F2/30744; A61F2/30965; A61F2/442; A61F2/4465; A61F2/46; A61F2/4603; A61F2/4611; A61F2/4644; A61F2002/2817; A61F2002/2835; A61F2002/2839; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30011; A61F2002/30057; A61F2002/3006; A61F2002/30062; A61F2002/30075; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30125; A61F2002/30126; A61F2002/30133; A61F2002/30138; A61F2002/30153; A61F2002/30158; A61F2002/30199; A61F2002/302; A61F2002/30224; A61F2002/30228; A61F2002/30233; A61F2002/30235; A61F2002/30237; A61F2002/3028; A61F2002/30316; A61F2002/30317; A61F2002/30324; A61F2002/30327; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30362; A61F2002/30364; A61F2002/30367; A61F2002/30383; A61F2002/30387; A61F2002/30433; A61F2002/30448; A61F2002/30459; A61F2002/30462; A61F2002/30476; A61F2002/30477; A61F2002/30481; A61F2002/30492; A61F2002/30494; A61F2002/30507; A61F2002/30515; A61F2002/30535; A61F2002/30593; A61F2002/30599; A61F2002/30604; A61F2002/30616; A61F2002/30617; A61F2002/30667; A61F2002/3071; A61F2002/30733; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30782; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/3082; A61F2002/30841; A61F2002/30843; A61F2002/30878; A61F2002/30891; A61F2002/30892; A61F2002/30894; A61F2002/30904; A61F2/30907; A61F2002/30909; A61F2002/30957; A61F2002/30971; A61F2002/30975; A61F2002/4635; A61F2002/4649; A61F2210/00; A61F2210/0004; A61F2210/0061; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0041; A61F2220/005; A61F2220/0066; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0008; A61F2230/0015; A61F2230/0017; A61F2230/0019; A61F2230/0026; A61F2230/0063; A61F2230/0065; A61F2230/0069; A61F2250/00; A61F2250/0014; A61F2250/0023; A61F2250/0036; A61F2250/0039; A61F2250/0058; A61F2250/006; A61F2250/0063; A61F2250/0085; A61F2250/0089; A61F2250/0096; A61F2250/0097; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00179; A61F2310/00293; A61F2310/00353; B29C33/00; B29C33/20; B29C33/26; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3041; Y; Y10; Y10S; Y10S623/00; Y10S623/924; Y10S623/925
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
82 words
An intervertebral implant comprising: a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra and having a wedge-shaped profile, wherein top and bottom surfaces of the implant have a plurality of teeth, wherein the implant further comprises a top portion having a top connecting surface and a bottom portion having a bottom connecting surface, the top connecting surface mating with the bottom connecting surface when the top and bottom surfaces are joined.
Claim 2
Dependent Claim
82 words
An intervertebral implant comprising: a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra and having a wedge-shaped profile, wherein top and bottom surfaces of the implant have a plurality of teeth, wherein the implant further comprises a top portion having a top connecting surface and a bottom portion having a bottom connecting surface, the top connecting surface mating with the bottom connecting surface when the top and bottom surfaces are joined.
Claim 3
Dependent Claim
33 words
The implant of claim 1 , wherein a pin is inserted through a hole in the top portion and a hole in the bottom portion to secure the top and bottom portions together.
Claim 4
Dependent Claim
14 words
The implant of claim 2 , wherein the pin is made of allogenic bone.
Claim 5
Dependent Claim
19 words
The implant of claim 2 , wherein the pin intersects the top and bottom connecting surfaces at oblique angles.
Claim 6
Dependent Claim
20 words
The implant of claim 1 , wherein the implant is made of a plurality of interconnecting sections with mating surfaces.
Claim 7
Dependent Claim
19 words
The implant of claim 1 , wherein at least one side has a channel for receiving a surgical instrument.
Claim 8
Dependent Claim
13 words
The implant of claim 1 , wherein the teeth have a pyramid shape.
Claim 9
Dependent Claim
14 words
The implant of claim 1 , wherein the teeth have a saw tooth shape.
Claim 10
Dependent Claim
24 words
The implant of claim 1 , wherein at least one side of the implant has at least one hole for attachment of an inserter.
Claim 11
Dependent Claim
18 words
The implant of claim 1 , wherein the top and bottom surfaces are defined by flat planar surfaces.
Claim 12
Dependent Claim
32 words
The implant of claim 10 , wherein a region between the top and bottom surfaces and an anterior side of the implant is a curved edge to facilitate implantation of the implant.
Claim 13
Dependent Claim
31 words
The implant of claim 1 , wherein the top and bottom surfaces are defined by curved surfaces, said curved surfaces contoured to mimic surfaces of the end plates of the vertebrae.
Claim 14
Dependent Claim
48 words
A method for restoring disc height between adjacent vertebrae having facing endplates, the method comprising: removing at least a portion of a disc located between the adjacent vertebrae; distracting an inner space between the facing endplates; and inserting the implant of claim 1 to the distracted inner space.
Claim 15
Dependent Claim
23 words
The method of claim 13 comprising measuring a distance between the adjacent vertebrae with a preoperative lateral radiograph to determine an implant height.
Claim 16
Dependent Claim
15 words
The method of claim 13 wherein a distractor is used to distract the inner space.
Claim 17
Dependent Claim
17 words
The method of claim 15 further comprising inserting a trial spacer implant to determine an implant height.
Claim 18
Dependent Claim
71 words
An allogenic intervertebral implant comprising top and bottom surfaces, each the top and bottom surfaces provided with a plurality of teeth; a first portion having a first connecting surface; a second portion having a second connecting surface; and a core having a first mating surface that mates with the first connecting surface and a second mating surface that mates with the second connecting surface to thereby form the allogenic intervertebral implant.
Claim 19
Dependent Claim
71 words
An allogenic intervertebral implant comprising top and bottom surfaces, each the top and bottom surfaces provided with a plurality of teeth; a first portion having a first connecting surface; a second portion having a second connecting surface; and a core having a first mating surface that mates with the first connecting surface and a second mating surface that mates with the second connecting surface to thereby form the allogenic intervertebral implant.
Claim 20
Dependent Claim
18 words
The implant of claim 17 , wherein the core is made of a single piece of allogenic bone.
Claim 21
Dependent Claim
41 words
The implant of claim 17 , wherein a pin is inserted through a hole in the first portion, a hole in the core, and a hole in the second portion to secure the core and the first and second portions together.
Claim 22
Dependent Claim
19 words
The implant of claim 19 , wherein the pin intersects the top and bottom connecting surfaces at oblique angles.
References Cited (Backward Citations)
US3848601A
Cited
US4059115A
Cited
DE2910627A1
Cited
US4781721A
Cited
FR2552659B3
Cited
US4932973A
Cited
US4877020A
Cited
US4678470A
Cited
US5053049A
Cited
US4627853A
Cited
US4834757A
Cited
US4950296A
Cited
US5141510A
Cited
US4858603A
Cited
US5484437A
Cited
US5741253A
Cited
US5785710A
Cited
US5593409A
Cited
US5522899A
Cited
US5776199A
Cited
US5609635A
Cited
US5026373A
Cited
US4961740A
Cited
US4961740B1
Cited
US5458638A
Cited
US5489308A
Cited
US5439684A
Cited
US5298254A
Cited
US4936848A
Cited
US5306308A
Cited
US5112354A
Cited
US5062850A
Cited
US5092893A
Cited
US5275954A
Cited
US5192327A
Cited
EP0505634B1
Cited
EP0517030B1
Cited
US5306307A
Cited
US5320644A
Cited
EP0538183B1
Cited
US5306303A
Cited
US5401269A
Cited
US5683464A
Cited
US5306309A
Cited
EP0577178A1
Cited
DE4242889A1
Cited
US5725579A
Cited
US5534030A
Cited
US5489307A
Cited
US5405391A
Cited
US5984922A
Cited
US5609637A
Cited
US5683463A
Cited
US5571190A
Cited
EP0639351B1
Cited
US5425772A
Cited
US5888224A
Cited
US5716415A
Cited
US5443514A
Cited
EP0646366B1
Cited
US5514180A
Cited
US5554191A
Cited
FR2717068B1
Cited
US5658337A
Cited
US5609636A
Cited
DE4423257C2
Cited
US5571192A
Cited
US5798096A
Cited
US5820581A
Cited
US5797871A
Cited
US5556379A
Cited
US5885299A
Cited
US5766252A
Cited
US5591235A
Cited
US5984967A
Cited
US6039762A
Cited
US5702449A
Cited
US5683394A
Cited
US5782830A
Cited
US5989289A
Cited
US5888222A
Cited
US5888227A
Cited
US5709683A
Cited
US5814084A
Cited
US5645598A
Cited
US6096081A
Cited
US5766253A
Cited
US5722977A
Cited
US5865845A
Cited
US6111164A
Cited
US5702455A
Cited
US6045580A
Cited
US5895426A
Cited
US5968098A
Cited
US6371988B1
Cited
US5728159A
Cited
US5976187A
Cited
US5897593A
Cited
US6080193A
Cited
US6045579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-04-28 | 2006-10-28 | 2007-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-04-28 | 2010-10-28 | 2011-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-04-28 | 2014-10-28 | 2015-04-29 | $7700.00 | Window Closed / Lapsed |