US4065817A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone prosthesis and method of forming a bone joint
Assignee: Individual
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Filing: 1976-04-23
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Granted: 1978-01-03
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Expires: 1996-04-23
Abstract
Abstract A bone prosthesis and the method of securing it in place, in which the prosthesis is formed as a tubular support member having perforations therein, the end of the bone is bored, the tubular support member is introduced into the bore and cement is then introduced into the interior of the tubular support and passes out through the perforations to provide the midterm anchor on the walls of the bone. The cement will damage the tissue where it contacts the tissue, but the remainder of the tissue of the bore is undamaged and this grows inwardly to form a long term anchor between the tubular support and the bone. A prosthesis body is located and secured in place e.g. mechanically or by cement, in the tubular support member.
Inventors
- 👤 Per Ingvar Branemark
- 👤 Bo Thuresson AF Ekenstam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:30
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61F2/30767; A61F2/30907; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30316; A61F2002/30329; A61F2002/30518; A61F2002/3052; A61F2002/30535; A61F2002/30563; A61F2002/30565; A61F2002/30566; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2/46; A61F2002/4631; A61F2220/00; A61F2220/0025; A61F2230/00; A61F2230/0063; A61F2230/0069
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
110 words
A bone prosthesis comprising, in combination: a. a tubular support member; b. a plurality of lateral openings disposed at spaced locations along the length and around the periphery of said support member and through the wall thereof; c. a prosthesis body having at least a part locatable in part in said tubular support member, said part having an outer surface dimensioned to be spaced from the inner surface of said tubular support member, whereby bone cement can be introduced into said tube support member when the prosthesis body is in place and flows through said lateral openings: and e. means for securing said body in place in said support member.
Claim 2
Dependent Claim
110 words
A bone prosthesis comprising, in combination: a. a tubular support member; b. a plurality of lateral openings disposed at spaced locations along the length and around the periphery of said support member and through the wall thereof; c. a prosthesis body having at least a part locatable in part in said tubular support member, said part having an outer surface dimensioned to be spaced from the inner surface of said tubular support member, whereby bone cement can be introduced into said tube support member when the prosthesis body is in place and flows through said lateral openings: and e. means for securing said body in place in said support member.
Claim 3
Dependent Claim
56 words
A prosthesis as claimed in claim 1, wherein the tubular support member comprises an inner tube and an outer tube, the outer tube having a plurality of lateral openings through the wall thereof, and the inner tube having a smaller number of openings therein, these openings being in register with the openings of the outer tube.
Claim 4
Dependent Claim
23 words
A prosthesis as claimed in claim 1, wherein the tubular support member comprises a mesh material with a plurality of lateral openings therethrough.
Claim 5
Dependent Claim
32 words
A prosthesis as claimed in claim 3, and further comprising, on the inner surface of said mesh material, a wall of ceramic material having holes therein in register with the lateral openings.
Claim 6
Dependent Claim
28 words
A prosthesis as claimed in claim 1, wherein the tubular support member comprises a tube having an inner portion and an outer portion radially spaced therefrom by punching.
Claim 7
Dependent Claim
17 words
A prosthesis as claimed in claim 1, wherein the tubular support member is formed as a helix.
Claim 8
Dependent Claim
15 words
A prosthesis as claimed in claim 1, wherein the tubular support member is radially resilient.
Claim 9
Dependent Claim
16 words
A prosthesis as claimed in claim 7, wherein the tubular support member has a crenelated periphery.
Claim 10
Dependent Claim
33 words
A prosthesis as claimed in claim 1, wherein the means for securing the body in place comprise radially inwardly extending projections on the tubular support member and co-operating members on the prosthesis body.
Claim 11
Dependent Claim
94 words
A bone prosthesis comprising, in combination: a. a tubular support member formed of mesh material providing a plurality of lateral openings disposed at spaced locations along the length and around the periphery of said support member and through the wall thereof; b. a wall of ceramic material having holes therein in register with the lateral openings disposed on the inner surface of said mesh material; c. a prosthesis body having at least a part locatable in said tubular mesh support member; and d. means for securing said body in place in said support member.
Claim 12
Dependent Claim
94 words
A bone prosthesis comprising, in combination: a. a tubular support member formed of mesh material providing a plurality of lateral openings disposed at spaced locations along the length and around the periphery of said support member and through the wall thereof; b. a wall of ceramic material having holes therein in register with the lateral openings disposed on the inner surface of said mesh material; c. a prosthesis body having at least a part locatable in said tubular mesh support member; and d. means for securing said body in place in said support member.
Claim 13
Dependent Claim
88 words
A bone prosthesis comprising in combination: a. a tubular support member comprising a tube having an inner portion and an outer portion radially spaced therefrom by punching; b. a plurality of lateral openings disposed at spaced locations along the length and around the periphery of said support member and through the wall thereof; c. a prosthesis body having at least a part locatable in said inner portion of said tube; and d. means for securing said body in place in said inner portion of the tubular support member.
Claim 14
Dependent Claim
88 words
A bone prosthesis comprising in combination: a. a tubular support member comprising a tube having an inner portion and an outer portion radially spaced therefrom by punching; b. a plurality of lateral openings disposed at spaced locations along the length and around the periphery of said support member and through the wall thereof; c. a prosthesis body having at least a part locatable in said inner portion of said tube; and d. means for securing said body in place in said inner portion of the tubular support member.
Claim 15
Independent Claim
102 words
A method of forming a bone joint comprising: a. providing a tubular support member having a plurality of lateral openings disposed at spaced locations along the length and around the periphery of said support member and through the wall thereof; b. forming a bore in the end of a bone to be joined; c. inserting the tubular support member in the bore; d. introducing cement into said tubular support member, whereby it passes locally through said openings to contact spaced portions of said bore only; e. curing said cement; and f. locating and securing a prosthesis body in said tubular support member.
Claim 16
Independent Claim
102 words
A method of forming a bone joint comprising: a. providing a tubular support member having a plurality of lateral openings disposed at spaced locations along the length and around the periphery of said support member and through the wall thereof; b. forming a bore in the end of a bone to be joined; c. inserting the tubular support member in the bore; d. introducing cement into said tubular support member, whereby it passes locally through said openings to contact spaced portions of said bore only; e. curing said cement; and f. locating and securing a prosthesis body in said tubular support member.
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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) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |