Patent US4875896A successfully refreshed from Google Patents.
US5607424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Domed cage
Assignee: Individual
•
Filing: 1995-04-10
•
Granted: 1997-03-04
•
Expires: 2015-04-10
Abstract
Abstract A cage for use in a spinal repair system wherein a pair of inert, relatively open bone-graft contouring cages are disposed between adjacent vertebrae mounted to the boney structure of these vertebrae wherein the vertebrae will knit together and act as a single unit. The upper and lower surfaces of the cages follow an arcuate path for increased contact with the abutting surfaces of the vertebrae themselves.
Inventors
- 👤 Patrick Tropiano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:10
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/442; A61F2/46; A61F2/4603; A61F2/4611; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30138; A61F2002/30153; A61F2002/30199; A61F2002/30261; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30777; A61F2002/30784; A61F2002/30785; A61F2002/30789; A61F2002/30878; A61F2002/30879; A61F2002/30891; A61F2002/30892; A61F2002/448; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0017; A61F2230/0019; A61F2230/0063; A61F2230/0082
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
184 words
In a spinal column where adjacent vertebrae have first and second opposed faces defining a space from which a disc has been removed, a device for replacing said disc comprising: a pair of inert cages each cage comprised of; first and second side walls respectively having first and second upper surfaces and first and second lower surfaces, a bottom surface extending between said first and second lower surfaces, a top surface extending between said first and second upper surfaces, an anterior plate at one end of said cage, and a posterior plate at the other end of said cage; said anterior and posterior plates being substantially solid except for a threaded opening in said posterior plate; a series of strut plates extending between said first and second side walls each of which have top and bottom edges and wherein said top edges form a portion of said top surface and wherein said bottom edges form a portion of said bottom surface; said bottom surface and bottom edges from forming an arcuate dome; and, said top surface and top edges forming a second arcuate dome.
Claim 2
Dependent Claim
184 words
In a spinal column where adjacent vertebrae have first and second opposed faces defining a space from which a disc has been removed, a device for replacing said disc comprising: a pair of inert cages each cage comprised of; first and second side walls respectively having first and second upper surfaces and first and second lower surfaces, a bottom surface extending between said first and second lower surfaces, a top surface extending between said first and second upper surfaces, an anterior plate at one end of said cage, and a posterior plate at the other end of said cage; said anterior and posterior plates being substantially solid except for a threaded opening in said posterior plate; a series of strut plates extending between said first and second side walls each of which have top and bottom edges and wherein said top edges form a portion of said top surface and wherein said bottom edges form a portion of said bottom surface; said bottom surface and bottom edges from forming an arcuate dome; and, said top surface and top edges forming a second arcuate dome.
Claim 3
Dependent Claim
19 words
The cages of claim 1 wherein said domes are configured to follow the contours of their adjacent vertebrae surfaces.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-03 | 2000-09-02 | 2001-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-03 | 2004-09-02 | 2005-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-03 | 2008-09-02 | 2009-03-04 | $7700.00 | Window Closed / Lapsed |