US5776196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthesis for spanning a space formed upon removal of an intervertebral disk
Assignee: Pentax Corp
•
Filing: 1996-03-05
•
Granted: 1998-07-07
•
Expires: 2016-03-05
Abstract
Abstract An artificial vertebra spacer is embedded in and bridges a space between two adjacent vertebrae which are positioned superiorly and inferiorly of a removed intervertebral disk, respectively. The artificial vertebra spacer includes a hollow cylindrical member, and a helical screw thread disposed integrally on and extending helically around the hollow cylindrical member. A substantially rectangular flange portion is provided at one end of the hollow cylindrical member. The flange portion is provided with at least one hole through which at least one screw passes to fix the spacer.
Inventors
- 👤 Hiromi Matsuzaki
- 👤 Satoshi Ojima
- 👤 Masashi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:52
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/02; A61L31/022; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/446; A61L27/00; A61L27/02; A61L27/04; A61L27/06; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7059; A61B17/84; A61B17/86; A61F2/30721; A61F2/30724; A61F2/30767; A61F2/442; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30316; A61F2002/30535; A61F2002/30576; A61F2002/30578; A61F2002/30593; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/30789; A61F2002/3085; A61F2230/00; A61F2230/0063; A61F2230/0069; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00389; A61F2310/00592; A61F2310/00796; A61L2430/00; A61L2430/38; Y; Y10; Y10S; Y10S606/00; Y10S606/907
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
An artificial vertebra spacer comprising: a hollow cylindrical member sized to be embedded in two adjacent vertebrae; screw means, provided on an outer circumferential surface of said hollow cylindrical member, for connecting said hollow cylindrical member with said two adjacent vertebrae by threadably engaging said two adjacent vertebrae; fixing means for fixing said hollow cylindrical member to said vertebrae; wherein said hollow cylindrical member further comprises a substantially rectangular flange portion at one end thereof and said flange portion is provided with at least one hole, and wherein said fixing means comprises at least one screw passing through said at least one hole.
Claim 2
Dependent Claim
103 words
An artificial vertebra spacer comprising: a hollow cylindrical member sized to be embedded in two adjacent vertebrae; screw means, provided on an outer circumferential surface of said hollow cylindrical member, for connecting said hollow cylindrical member with said two adjacent vertebrae by threadably engaging said two adjacent vertebrae; fixing means for fixing said hollow cylindrical member to said vertebrae; wherein said hollow cylindrical member further comprises a substantially rectangular flange portion at one end thereof and said flange portion is provided with at least one hole, and wherein said fixing means comprises at least one screw passing through said at least one hole.
Claim 3
Dependent Claim
17 words
An artificial vertebra spacer according to claim 1, wherein said hollow cylindrical member is made of metal.
Claim 4
Dependent Claim
29 words
An artificial vertebra spacer according to claim 1, wherein said hollow cylindrical member has a plurality of holes which extend in a radial direction of said hollow cylindrical member.
Claim 5
Dependent Claim
35 words
An artificial vertebra spacer according to claim 1, wherein said at least one hole comprises a longitudinal axis which is inclined at an angle with respect to a longitudinal axis of said hollow cylindrical member.
Claim 6
Dependent Claim
109 words
An artificial vertebra spacer comprising: a hollow cylindrical member sized to be embedded in two adjacent vertebrae; a screw, provided on an outer circumferential surface of said hollow cylindrical member, configured to connect said hollow cylindrical member with said two adjacent vertebrae by threadably engaging said two adjacent vertebrae; a fixing mechanism configured to fix said hollow cylindrical member to said vertebrae; wherein said hollow cylindrical member further comprises a substantially rectangular flange portion at one end of said hollow cylindrical member, said flange portion being provided with at least one hole, and wherein said fixing mechanism includes at least one screw passing through said at least one hole.
Claim 7
Dependent Claim
109 words
An artificial vertebra spacer comprising: a hollow cylindrical member sized to be embedded in two adjacent vertebrae; a screw, provided on an outer circumferential surface of said hollow cylindrical member, configured to connect said hollow cylindrical member with said two adjacent vertebrae by threadably engaging said two adjacent vertebrae; a fixing mechanism configured to fix said hollow cylindrical member to said vertebrae; wherein said hollow cylindrical member further comprises a substantially rectangular flange portion at one end of said hollow cylindrical member, said flange portion being provided with at least one hole, and wherein said fixing mechanism includes at least one screw passing through said at least one hole.
Claim 8
Dependent Claim
15 words
An artificial vertebra spacer according to claim 5, wherein said hollow cylindrical member is metal.
Claim 9
Dependent Claim
29 words
An artificial vertebra spacer according to claim 5, wherein said hollow cylindrical member has a plurality of holes which extend in a radial direction of said hollow cylindrical member.
Claim 10
Dependent Claim
35 words
An artificial vertebra spacer according to claim 5, wherein said at least one hole comprises a longitudinal axis which is inclined at an angle with respect to a longitudinal axis of said hollow cylindrical member.
References Cited (Backward Citations)
US1017371A
Cited
US3848276A
Cited
US4044170A
Cited
US4113500A
Cited
US4149894A
Cited
US4230455A
Cited
USRE31865E
Cited
US4484570A
Cited
WO1985002535A1
Cited
EP0188954A1
Cited
US4743256A
Cited
US4904257A
Cited
US4798585A
Cited
DE3729600A1
Cited
US5017518A
Cited
US4969913A
Cited
US4946378A
Cited
US5128146A
Cited
US4919751A
Cited
SU1519677A1
Cited
US5015247A
Cited
US4961740A
Cited
US4961740B1
Cited
FR2651992A1
Cited
US5082803A
Cited
WO1991006266A1
Cited
US5147361A
Cited
DE4109941A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-06 | 2002-01-05 | 2002-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-06 | 2006-01-05 | 2006-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-06 | 2010-01-05 | 2010-07-07 | $7700.00 | Window Closed / Lapsed |