Patent US3824631A successfully refreshed from Google Patents.
US3824631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone joint fusion prosthesis
Assignee: SAMPSON CORP
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Filing: 1973-05-11
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Granted: 1974-07-23
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Expires: 1993-05-11
Abstract
Abstract A prosthesis for use in fusion of a bone joint especially for managing the severely disabled rheumatoid wrist. The prosthesis serves as a bridge across the joint and is formed of an appropriate metal of hollow construction and is bifurcated at one end to provide projections which are received within the medullary canal of two metacarpals and has an extension on the other end for reception within the radius. Methylmethacrylate or other appropriate settable cement is packed within and about the prosthesis to provide, upon setting, a strong, rigid joint bridge.
Inventors
- 👤 A Burstein
- 👤 K Heiple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:42
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/42; A61F2/4261; A61F2/3094; A61F2/30965; A61F2/40; A61F2002/30001; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2002/30621; A61F2002/30622; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2/4241; A61F2002/4243; A61F2/46; A61F2002/4631
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
106 words
A prosthesis for bone joint fusion comprising a hollow substantially rigid but malleable metal bridge member, said member having a bifurcated end to provide two hollow projections, each adapted for insertion within adjacent bones on one side of a joint, said member having substantially hollow projection means extending from the other end thereof and adapted for insertion axially into a bone on the other side of saiD joint so that the bridge member may span the joint, and means on the bridge member and the projections on each end thereof adapted to receive and lock with a settable cement to form a rigid unitary bridge implant.
Claim 2
Dependent Claim
106 words
A prosthesis for bone joint fusion comprising a hollow substantially rigid but malleable metal bridge member, said member having a bifurcated end to provide two hollow projections, each adapted for insertion within adjacent bones on one side of a joint, said member having substantially hollow projection means extending from the other end thereof and adapted for insertion axially into a bone on the other side of saiD joint so that the bridge member may span the joint, and means on the bridge member and the projections on each end thereof adapted to receive and lock with a settable cement to form a rigid unitary bridge implant.
Claim 3
Dependent Claim
34 words
A prosthesis as defined in claim 1, wherein the means to receive and lock with a settable cement comprises a plurality of perforations disposed in the surface of the bridge member and the projections.
Claim 4
Dependent Claim
30 words
A fusion prosthesis as defined in claim 1, wherein the projection means on the other end of the bridge member comprises a pair of similarly shaped fingers in overlying relationship.
Claim 5
Dependent Claim
28 words
A fusion prosthesis as defined in claim 3, wherein the ends of each of the fingers are connected and the remaining portion of the fingers are spaced apart.
Claim 6
Dependent Claim
18 words
A fusion prosthesis are defined in claim 4, and further including a corrugated reinforcing member between the fingers.
Claim 7
Dependent Claim
43 words
A fusion prosthesis as defined in claim 1, wherein the projection means extends at an angle of about 60* from the remainder of the prosthesis for ease in insertion and said projection adapted to be bent into the plane of the bridge member.
Claim 8
Dependent Claim
17 words
A prosthesis as defined in claim 1 and further including a settable cement filling the bridge member.
Claim 9
Dependent Claim
12 words
A prosthesis as defined in claim 7 wherein said cement is methylmethacrylate.
Claim 10
Dependent Claim
84 words
A prosthesis for bone joint fusion comprising a hollow substantially rigid metal bridge member, said member being bifurcated at one end thereof to provide two hollow projections each adapted for insertion within adjacent bones on one side of a joint, a projection on the other end of the bridge member adapted for insertion in a bone on the other side of said joint, said last projection comprising a pair of similarly shaped fingers in overlying relationship, and a corrugated reinforcing member intermediate said fingers.
Claim 11
Dependent Claim
84 words
A prosthesis for bone joint fusion comprising a hollow substantially rigid metal bridge member, said member being bifurcated at one end thereof to provide two hollow projections each adapted for insertion within adjacent bones on one side of a joint, a projection on the other end of the bridge member adapted for insertion in a bone on the other side of said joint, said last projection comprising a pair of similarly shaped fingers in overlying relationship, and a corrugated reinforcing member intermediate said fingers.
Claim 12
Dependent Claim
18 words
A prosthesis as defined in claim 9, wherein said bridge has a plurality of perforations throughout its surface.
References Cited (Backward Citations)
US2518019A
Cited
US3112743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |