Patent US6440170B1 successfully refreshed from Google Patents.
US6440170B1
Expired / Lapsed
US
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Threaded interbody device
Assignee: Warsaw Orthopedic Inc
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Filing: 2000-12-04
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Granted: 2002-08-27
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Expires: 2020-12-04
Abstract
Abstract An interbody device having upper and lower surfaces that are sized and shaped to be operably positioned between a pair of adjacent vertebrae for support and/or fusion. The upper and lower surfaces have a generally convex curvature. The upper and lower surfaces are joined by a pair of side surfaces that are arcuate and semi-circular, when viewed from the front, so as to be generally concave. The interbody devices are used in pairs between two vertebrae and joined by a bar that is received in a recess in each of the devices so as to resist rotation of the devices relative to the bar subsequent to installation.
Inventors
- 👤 Roger P. Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:19
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/446; A61F2/46; A61F2/4603; A61F2/4611; A61F2/442; A61F2/4465; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30205; A61F2002/3021; A61F2002/30224; A61F2002/30316; A61F2002/30329; A61F2002/30433; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30795; A61F2002/30797; A61F2002/3085; A61F2002/30858; A61F2002/30861; A61F2002/30868; A61F2002/30873; A61F2002/448; A61F2220/00; A61F2220/0025; A61F2220/0041; A61F2230/00; A61F2230/0063; A61F2230/0067; A61F2230/0069
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
93 words
An interbody device for placement between a pair of adjacent vertebrae; said device comprising: a) a body having an axis and upper and lower elongate convex surface that are generally coaxially thread depth is reduced; and located with respect to said axis and which are cylindrical in shape along a substantial length of said device; said upper and lower surfaces having elongate side edges; b) said body also having inwardly arced concave said surfaces along a substantial length thereof; said side surface extending between respective side edges of said upper and lower surfaces.
Claim 2
Dependent Claim
93 words
An interbody device for placement between a pair of adjacent vertebrae; said device comprising: a) a body having an axis and upper and lower elongate convex surface that are generally coaxially thread depth is reduced; and located with respect to said axis and which are cylindrical in shape along a substantial length of said device; said upper and lower surfaces having elongate side edges; b) said body also having inwardly arced concave said surfaces along a substantial length thereof; said side surface extending between respective side edges of said upper and lower surfaces.
Claim 3
Dependent Claim
23 words
The device according to claim 1 wherein: a) said side surfaces have a semi-circular cross-section in a plane passing perpendicular to said axis.
Claim 4
Dependent Claim
19 words
The device according to claim 1 wherein: a) both of said side surfaces have a common radius of generation.
Claim 5
Dependent Claim
28 words
The device according to claim 3 wherein: a) said upper and lower surfaces have a radius of generation approximately equal to said side surfaces common radius of generation.
Claim 6
Dependent Claim
21 words
The device according to claim 1 wherein: a) said upper and lower surfaces have a helically wound discontinuous thread located thereon.
Claim 7
Dependent Claim
21 words
The device according to claim 1 wherein: a) said thread extends from a rear to near a front of said device.
Claim 8
Dependent Claim
46 words
The device according to claim 6 wherein: (a) said thread has a maximum and minimum diameter therealong and said minimum diameter approximately equals said maximum diameter in two forward turns of said thread so as to provide a generally smooth cylindrical surface for anterior bone support.
Claim 9
Dependent Claim
37 words
The device according to claim 1 wherein: a) said device has a front wall; and b) said front wall includes a centrally located recess adapted to receive a bar for connecting together a pair of said devices.
Claim 10
Dependent Claim
11 words
The device according to claim 8 in combination with said bar.
Claim 11
Dependent Claim
47 words
The combination according to claim 9 wherein: a) said recess has upper and lower walls and; b) said bar is sized and shaped to snugly abut against said recess walls when placed in said recess so as to resist relative rotation between said bar and said device.
Claim 12
Dependent Claim
35 words
The combination according to claim 10 wherein: a) said bar includes a bore and said device includes a threaded bore such that both of said bores align when said bar is received in said slot.
Claim 13
Dependent Claim
40 words
The combination according to claim 11 including: a) a set screw sized and shaped to be received through said bar bore and threaded to be matingly received in said device threaded bore to operably secure said bar to said device.
Claim 14
Dependent Claim
102 words
An interbody device for placement between a pair of adjacent vertebrae; said device comprising: (a) a body having an axis and upper and lower elongate surfaces that are generally coaxially located with respect to said axis; said upper and lower surfaces having elongate side edges; said upper and lower surfaces each having a thread located thereon; (b) said thread has a generally uniform thread depth except near a front of said device whereat said thread depth is reduced; and (c) said body also having inwardly arced side surfaces; said side surfaces extending between respective side edges of said upper and lower surfaces.
Claim 15
Dependent Claim
102 words
An interbody device for placement between a pair of adjacent vertebrae; said device comprising: (a) a body having an axis and upper and lower elongate surfaces that are generally coaxially located with respect to said axis; said upper and lower surfaces having elongate side edges; said upper and lower surfaces each having a thread located thereon; (b) said thread has a generally uniform thread depth except near a front of said device whereat said thread depth is reduced; and (c) said body also having inwardly arced side surfaces; said side surfaces extending between respective side edges of said upper and lower surfaces.
Claim 16
Dependent Claim
90 words
In a threaded interbody device for placement between a pair of adjacent vertebrae having an axis of rotation with upper and lower outer surfaces with threads thereon adapted to operably engage respective vertebrae and a pair of concave cylindrically shaped side surfaces joining respective outer edges of said lower and upper surfaces; the improvement comprising wherein: (a) each of said upper and lower surfaces are sectors of a cylinder substantially along the entire length of said device and have a convex circular cross-section in a plane perpendicular to said axis.
Claim 17
Dependent Claim
90 words
In a threaded interbody device for placement between a pair of adjacent vertebrae having an axis of rotation with upper and lower outer surfaces with threads thereon adapted to operably engage respective vertebrae and a pair of concave cylindrically shaped side surfaces joining respective outer edges of said lower and upper surfaces; the improvement comprising wherein: (a) each of said upper and lower surfaces are sectors of a cylinder substantially along the entire length of said device and have a convex circular cross-section in a plane perpendicular to said axis.
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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) | 2005-08-26 | 2006-02-25 | 2006-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-08-26 | 2010-02-25 | 2010-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-08-26 | 2014-02-25 | 2014-08-27 | $7700.00 | Window Closed / Lapsed |