US5989289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone grafts
Assignee: Warsaw Orthopedic Inc
•
Filing: 1997-10-09
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Granted: 1999-11-23
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Expires: 2017-10-09
Abstract
Abstract A spinal spacer 300 for engagement between vertebrae is provided which includes a body 301 formed of a bone composition. The body 301 includes a first end 311, an opposite second 315 end, a superior face 335 defining a superior vertebral engaging surface 337 and an inferior face 338 defining an inferior vertebral engaging surface 340. At least one of the vertebral engaging surfaces defines a set of migration resistance grooves 350. Each of the grooves 350 includes a first face 355 defining an angle of no more than about 90 degrees relative to the engaging surface 340 and a second opposing sloped face 360. The first and second faces 355, 360 define an arcuate pocket 370 therebetween for trapping vertebral bone to resist migration of the spacer 300. In one embodiment, the grooves 350 are arranged in series in that all of the second faces 360 slope in the same direction.
Inventors
- 👤 Bradley J. Coates
- 👤 James Van Hoeck
- 👤 Jeffrey Poyner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:53
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4611; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1671; A61B17/17; A61B17/1739; A61B17/1757; A61F2/28; A61F2/30767; A61F2/44; A61F2/442; A61F2/4455; A61F2/446; A61F2/447; A61F2/468; A61L; A61L27/00; A61L27/02; A61L27/10; A61L27/12; A61L27/14; A61L27/16; A61L27/18; A61L27/22; A61L27/24; A61L27/50; A61L27/54; A61L31/00; A61L31/02; A61L31/024; A61L31/026; A61L31/04; A61L31/043; A61L31/044; A61L31/047; A61L31/048; A61L31/06; A61B17/02; A61B17/025; A61B2017/0256; A61B90/00; A61B90/03; A61B2090/033; A61B2090/034; A61F2/30721; A61F2/30724; A61F2002/2817; A61F2002/2835; A61F2002/2839; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30057; A61F2002/3006; A61F2002/30062; A61F2002/30075; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30136; A61F2002/30138; A61F2002/30153; A61F2002/30182; A61F2002/30187; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30261; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2002/30667; A61F2002/30677; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30784; A61F2002/30787; A61F2002/30795; A61F2002/30797; A61F2002/30813; A61F2002/30836; A61F2002/30841; A61F2002/30845; A61F2002/3085; A61F2002/30866; A61F2002/30878; A61F2002/30879; A61F2002/30891; A61F2002/30892; A61F2002/30904; A61F2002/3092; A61F2002/30929; A61F2002/448; A61F2002/4625; A61F2002/4627; A61F2002/4628; A61F2/4644; A61F2002/4649; A61F2210/00; A61F2210/0004; A61F2210/0061; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0017; A61F2230/0019; A61F2230/0028; A61F2230/0034; A61F2230/0063; A61F2230/0069; A61F2230/0082; A61F2250/00; A61F2250/0014; A61F2310/00; A61F2310/00005; A61F2310/00161; A61F2310/00179; A61F2310/00293; A61F2310/00365; A61F2310/00389; A61F2310/00395; A61F2310/00419; A61F2310/00491; A61F2310/00544; A61F2310/00592; A61F2310/00796; A61L2300/00; A61L2300/40; A61L2300/412; A61L2300/414; A61L2430/00; A61L2430/38
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
107 words
A spinal spacer for engagement between vertebrae, comprising: a body formed of a bone composition and including a first end, an opposite second end, a superior face defining a superior vertebral engaging surface and an inferior face defining an inferior vertebral engaging surface; and at least one of said vertebral engaging surfaces defining a first set of migration resistance grooves, each of said grooves including a first face defining an angle of no more than about 90 degrees relative to said one of said engaging surfaces and a second opposing sloped face, said first and second faces defining a substantially arcuate pocket therebetween for trapping vertebral bone.
Claim 2
Dependent Claim
107 words
A spinal spacer for engagement between vertebrae, comprising: a body formed of a bone composition and including a first end, an opposite second end, a superior face defining a superior vertebral engaging surface and an inferior face defining an inferior vertebral engaging surface; and at least one of said vertebral engaging surfaces defining a first set of migration resistance grooves, each of said grooves including a first face defining an angle of no more than about 90 degrees relative to said one of said engaging surfaces and a second opposing sloped face, said first and second faces defining a substantially arcuate pocket therebetween for trapping vertebral bone.
Claim 3
Dependent Claim
16 words
The spacer of claim 1 wherein said grooves of said first set are arranged in series.
Claim 4
Dependent Claim
17 words
The spacer of claim 2 wherein each of said sloped faces is sloped toward said first end.
Claim 5
Dependent Claim
29 words
The spacer of claim 1 wherein said at least one of said vertebral engaging surfaces defines a peak between each of said grooves, said peak defining a flattened surface.
Claim 6
Dependent Claim
98 words
The spacer of claim 3 further comprising a second set of migration resistance grooves defined in series in at least one of said vertebral engaging surfaces, each of said grooves of said second set including a first face defining an angle of no more than about 90 degrees relative to said one of said engaging surfaces and a second opposing sloped face, said first and second faces of each of said grooves of said second set defining a pocket therebetween for trapping vertebral bone, each of said sloped faces of said second set sloping towards said second end.
Claim 7
Dependent Claim
39 words
The spacer of claim 5 wherein each of said grooves has a depth below said at least one of said vertebral engaging surfaces and said grooves of said first set are deeper than said grooves of said second set.
Claim 8
Dependent Claim
39 words
The spacer of claim 5 wherein each of said grooves has a depth below said at least one of said vertebral engaging surfaces and said grooves of said second set are deeper than said grooves of said first set.
Claim 9
Dependent Claim
18 words
The spacer of claim 1 wherein the pocket defined by said first and second faces is circularly rounded.
Claim 10
Dependent Claim
21 words
The spacer of claim 1 wherein said first face is perpendicular to said at least one of said vertebral engaging surfaces.
Claim 11
Dependent Claim
24 words
The spacer of claim 1 further comprising a cutting edge between said first face and said at least one of said vertebral engaging surfaces.
Claim 12
Dependent Claim
35 words
The spacer of claim 4 wherein said first face at said pocket has a first height which is taller than a second height of said second face at said pocket, and said peak is sloped.
Claim 13
Dependent Claim
34 words
The spacer of claim 1 wherein said superior face defines a first opening and said inferior face defines a second opening, each of said openings in communication with a chamber formed through said body.
Claim 14
Dependent Claim
14 words
The spacer of claim 12 wherein said first end defines a convexly curved surface.
Claim 15
Dependent Claim
11 words
The spacer of claim 13 wherein said second end is flat.
Claim 16
Dependent Claim
178 words
A hollow spinal spacer for engagement between vertebrae, comprising: a body formed of bone composition and including an anterior wall with opposite ends and defining a convexly curved anterior surface, an opposite posterior wall having opposite ends and defining a flat posterior surface, two lateral walls, each integrally connected between said opposite ends of said anterior and posterior walls to define a chamber, said walls further defining a superior vertebral engaging surface defining a first opening, said first opening in communication with said chamber, and an inferior vertebral engaging surface defining a second opening, said second opening in communication with said chamber; and at least one of said vertebral engaging faces defining a set of migration resistance grooves, each of said grooves including a first face defining an angle of no more than about 90 degrees relative to said one of said engaging surfaces and a second opposing sloped face, said first and second faces defining a substantially arcuate pocket therebetween for trapping vertebral bone, said grooves in series with said sloped faces sloping towards said anterior wall.
Claim 17
Dependent Claim
178 words
A hollow spinal spacer for engagement between vertebrae, comprising: a body formed of bone composition and including an anterior wall with opposite ends and defining a convexly curved anterior surface, an opposite posterior wall having opposite ends and defining a flat posterior surface, two lateral walls, each integrally connected between said opposite ends of said anterior and posterior walls to define a chamber, said walls further defining a superior vertebral engaging surface defining a first opening, said first opening in communication with said chamber, and an inferior vertebral engaging surface defining a second opening, said second opening in communication with said chamber; and at least one of said vertebral engaging faces defining a set of migration resistance grooves, each of said grooves including a first face defining an angle of no more than about 90 degrees relative to said one of said engaging surfaces and a second opposing sloped face, said first and second faces defining a substantially arcuate pocket therebetween for trapping vertebral bone, said grooves in series with said sloped faces sloping towards said anterior wall.
Claim 18
Dependent Claim
125 words
A spinal spacer for engagement between vertebrae, comprising: a body formed of a bone composition and including a first end, an opposite second end, a superior face defining a superior vertebral engaging surface and an inferior face defining an inferior vertebral engaging surface; and at least one of said vertebral engaging surfaces defining a first set of migration resistance grooves, each of said grooves including a first face defining an angle of no more than about 90 degrees relative to said one of said engaging surfaces and a second opposing sloped face, said first and second faces defining a pocket therebetween for trapping vertebral bone, said one of said engaging surfaces defining a peak between each of said grooves, said peak defining a flattened surface.
Claim 19
Dependent Claim
125 words
A spinal spacer for engagement between vertebrae, comprising: a body formed of a bone composition and including a first end, an opposite second end, a superior face defining a superior vertebral engaging surface and an inferior face defining an inferior vertebral engaging surface; and at least one of said vertebral engaging surfaces defining a first set of migration resistance grooves, each of said grooves including a first face defining an angle of no more than about 90 degrees relative to said one of said engaging surfaces and a second opposing sloped face, said first and second faces defining a pocket therebetween for trapping vertebral bone, said one of said engaging surfaces defining a peak between each of said grooves, said peak defining a flattened surface.
Claim 20
Dependent Claim
24 words
The spacer of claim 16 further comprising a cutting edge between said first face and said at least one of said vertebral engaging surfaces.
Claim 21
Dependent Claim
35 words
The spacer of claim 16 wherein said first face at said pocket has a first height which is taller than a second height of said second face at said pocket, and said peak is sloped.
Claim 22
Dependent Claim
21 words
The spacer of claim 16 wherein said first face is perpendicular to said at least one of said vertebral engaging surfaces.
Claim 23
Dependent Claim
156 words
A spinal spacer for engagement between vertebrae, comprising: a body formed of a bone composition and including a first end, an opposite second end, a superior face defining a superior vertebral engaging surface and an inferior face defining an inferior vertebral engaging surface; and at least one of said vertebral engaging surfaces defining a first set of migration resistance grooves, said at least one of said vertebral engaging surfaces defining a second set of migration resistance grooves, each of said grooves including a first face defining an angle of no more than about 90 degrees relative to said one of said engaging surfaces and a second opposing sloped face, said first and second faces defining a pocket therebetween for trapping vertebral bone, each of said sloped faces of said grooves of said first set sloping toward said first end, each of said sloped faces of said grooves of said second set sloping toward said second end.
Claim 24
Dependent Claim
156 words
A spinal spacer for engagement between vertebrae, comprising: a body formed of a bone composition and including a first end, an opposite second end, a superior face defining a superior vertebral engaging surface and an inferior face defining an inferior vertebral engaging surface; and at least one of said vertebral engaging surfaces defining a first set of migration resistance grooves, said at least one of said vertebral engaging surfaces defining a second set of migration resistance grooves, each of said grooves including a first face defining an angle of no more than about 90 degrees relative to said one of said engaging surfaces and a second opposing sloped face, said first and second faces defining a pocket therebetween for trapping vertebral bone, each of said sloped faces of said grooves of said first set sloping toward said first end, each of said sloped faces of said grooves of said second set sloping toward said second end.
Claim 25
Dependent Claim
39 words
The spacer of claim 20 wherein each of said grooves has a depth below said at least one of said vertebral engaging surfaces and said grooves of said first set are deeper than said grooves of said second set.
Claim 26
Dependent Claim
39 words
The spacer of claim 20 wherein each of said grooves has a depth below said at least one of said vertebral engaging surfaces and said grooves of said second set are deeper than said grooves of said first set.
Claim 27
Dependent Claim
29 words
The spacer of claim 20 wherein said at least one of said vertebral engaging surfaces defines a peak between each of said grooves, said peak defining a flattened surface.
Claim 28
Dependent Claim
35 words
The spacer of claim 23 wherein said first face at said pocket has a first height which is taller than a second height of said second face at said pocket, and said peak is sloped.
References Cited (Backward Citations)
US4685919A
Cited
FR2703580A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-22 | 2003-05-24 | 2003-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-22 | 2007-05-24 | 2007-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-22 | 2011-05-24 | 2011-11-23 | $7700.00 | Window Closed / Lapsed |