US6482233B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic interbody spacer
Assignee: Synthes USA LLC
•
Filing: 1999-01-28
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Granted: 2002-11-19
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Expires: 2019-01-28
Abstract
Abstract The present invention relates to an interbody spacer for use in replacing diseased or damaged intervertebral discs and fusing together vertebrae. The implant includes an annular base portion having an anterior end, a posterior end, and two side portions together forming a continuous outer wall, and an upper and a lower face portion extending around the outer wall. A plurality of teeth extend outwardly from the upper and lower face portions of the annular base portion. The teeth are slanted in the longitudinal direction toward the anterior end and have a generally regular V-shaped configuration in the transverse direction.
Inventors
- 👤 Max Aebi
- 👤 John S. Thalgott
- 👤 Inga Häfeli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:58
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/02; A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/4465; A61F2/442; A61F2/46; A61F2/4603; A61F2/4611; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30784; A61F2002/30789; A61F2002/30841; A61F2002/30904; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00029
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
75 words
An interbody spacer comprising: an annular base portion having an anterior end, a posterior end, and two side portions together forming a continuous outer wall, and an upper and a lower face portion extending around the outer wall; and a plurality of teeth extending outwardly from the upper and lower face portions, said teeth being slanted in the longitudinal direction toward the anterior end and having a generally regular V-shaped configuration in the transverse direction.
Claim 2
Dependent Claim
75 words
An interbody spacer comprising: an annular base portion having an anterior end, a posterior end, and two side portions together forming a continuous outer wall, and an upper and a lower face portion extending around the outer wall; and a plurality of teeth extending outwardly from the upper and lower face portions, said teeth being slanted in the longitudinal direction toward the anterior end and having a generally regular V-shaped configuration in the transverse direction.
Claim 3
Dependent Claim
18 words
The interbody spacer of claim 1 , wherein said base portion is generally convex in the transverse direction.
Claim 4
Dependent Claim
17 words
The interbody spacer of claim 2 , wherein said base portion is wedge-shaped in the longitudinal direction.
Claim 5
Dependent Claim
18 words
The interbody spacer of claim 3 , wherein said base portion is generally concave in the longitudinal direction.
Claim 6
Dependent Claim
29 words
The interbody spacer of claim 1 , wherein said teeth are configured and dimensioned in the shape of four-sided pyramids to facilitate penetration of the end faces of vertebrae.
Claim 7
Dependent Claim
17 words
The interbody spacer of claim 1 , wherein said teeth are substantially symmetrical in the transverse direction.
Claim 8
Dependent Claim
22 words
The interbody spacer of claim 1 , wherein said teeth substantially cover the entire upper and lower faces of the base portion.
Claim 9
Dependent Claim
20 words
The interbody spacer of claim 7 , wherein said teeth are aligned longitudinally and transversely in a plurality of rows.
Claim 10
Dependent Claim
28 words
The interbody spacer of claim 1 , wherein said annular base portion includes an inner wall having at least one groove formed at least around a portion thereof.
Claim 11
Dependent Claim
40 words
The interbody spacer of claim 1 , wherein said annular base portion is wedge-shaped in order to aid in restoring normal anatomical posture, with the base portion having a greater height at the anterior end than at the posterior end.
Claim 12
Dependent Claim
15 words
The interbody spacer of claim 1 , wherein said annular base portion is generally oval.
Claim 13
Dependent Claim
16 words
The interbody spacer of claim 11 , wherein said oval includes at least one flattened end.
Claim 14
Dependent Claim
35 words
The interbody spacer of claim 1 , wherein said annular base portion is shaped to substantially conform to an endplate of an adjoining vertebrae and is configured and dimensioned to receive a bone grafting material.
Claim 15
Dependent Claim
24 words
The interbody spacer of claim 1 , wherein said outer wall includes at least one groove defined therein for joining with an insertion device.
Claim 16
Dependent Claim
24 words
The interbody spacer of claim 1 , wherein said outer wall includes at least one aperture extending therethrough for joining with an insertion device.
Claim 17
Dependent Claim
67 words
An interbody spacer comprising: an annular base portion having an anterior end, a posterior end, and two side portions together forming a continuous outer wall, and an upper and lower face portion extending around the outer wall, said base portion being generally convex in the transverse direction and wedge-shaped in the longitudinal direction; and a plurality of teeth extending outwardly from the upper and lower face portions.
Claim 18
Dependent Claim
67 words
An interbody spacer comprising: an annular base portion having an anterior end, a posterior end, and two side portions together forming a continuous outer wall, and an upper and lower face portion extending around the outer wall, said base portion being generally convex in the transverse direction and wedge-shaped in the longitudinal direction; and a plurality of teeth extending outwardly from the upper and lower face portions.
Claim 19
Dependent Claim
30 words
The interbody spacer of claim 16 , wherein said teeth are slanted in the longitudinal direction toward the anterior end and have a generally regular V-shape in the transverse direction.
Claim 20
Dependent Claim
17 words
The interbody spacer of claim 17 , wherein said teeth are substantially symmetrical in the transverse direction.
Claim 21
Dependent Claim
29 words
The interbody spacer of claim 16 , wherein said teeth are configured and dimensioned in the shape of four-sided pyramids to facilitate penetration of the end faces of vertebrae.
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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) | 2005-11-18 | 2006-05-20 | 2006-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-11-18 | 2010-05-20 | 2010-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-11-18 | 2014-05-20 | 2014-11-19 | $7700.00 | Window Closed / Lapsed |