US4608052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implant with attachment surface
Assignee: Smith and Nephew Inc
•
Filing: 1984-04-25
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Granted: 1986-08-26
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Expires: 2004-04-25
Abstract
Abstract An implant for use in a human body having an integral attachment surface adapted to permit tissue ingrowth. The attachment surface has an inner attachment surface and a multiplicity of spaced posts projecting from the inner attachment surface. The posts each have side attachment surfaces which are generally cylindrically concave, intersect to define post edges, and are radiused at their intersections with the inner attachment surface. A method of forming the attachment surface on an implant with a laser is also included.
Inventors
- 👤 Craig L. Van Kampen
- 👤 Eric N. Hockert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:07
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30771; A61F2/08; A61F2/0811; A61F2/28; A61F2/3094; A61F2/32; A61F2/34; A61F2/36; A61F2/3662; A61F2/367; A61F2/3676; A61F2/38; A61F2/3859; A61F2/389; A61F2/40; A61F2/4059; A61F2/4081; A61F2/42; A61F2/4241; A61F2002/2835; A61F2002/30001; A61F2002/30316; A61F2002/30317; A61F2002/30322; A61F2002/30878; A61F2002/30884; A61F2002/3097; A61F2/3609; A61F2002/3625; A61F2002/3631; A61F2250/00; A61F2250/0014; A61F2250/0026; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00029; A61F2310/00179; A61F2310/00185; A61F2310/00203; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12993
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
107 words
An implant for use in a human body, said implant having an integral attachment surface adapted to permit ingrowth of living tissue, said attachment surface being defined (1) by a multiplicity of adjacent, generally part-spherical, concave surface parts within said implant having intersecting, generally aligned rims defining an inner attachment surface portion within said implant and (2) by a multiplicity of spaced posts projecting from said inner attachment surface portion, said posts each having a plurality of side attachment surfaces, which side attachment surfaces (1) are generally cylindrically concave, (2) intersect to define post edges, and (3) are radiused at their intersections with said concave surface parts.
Claim 2
Dependent Claim
107 words
An implant for use in a human body, said implant having an integral attachment surface adapted to permit ingrowth of living tissue, said attachment surface being defined (1) by a multiplicity of adjacent, generally part-spherical, concave surface parts within said implant having intersecting, generally aligned rims defining an inner attachment surface portion within said implant and (2) by a multiplicity of spaced posts projecting from said inner attachment surface portion, said posts each having a plurality of side attachment surfaces, which side attachment surfaces (1) are generally cylindrically concave, (2) intersect to define post edges, and (3) are radiused at their intersections with said concave surface parts.
Claim 3
Dependent Claim
33 words
The implant according to claim 1 wherein said side attachment surfaces are generally cylindrically concave about mutually parallel axes and said side attachment surfaces intersect to define generally sharp, mutually parallel post edges.
Claim 4
Dependent Claim
18 words
The implant according to claim 2 wherein said axies are generally perpendicular to said inner attachment surface portion.
Claim 5
Dependent Claim
19 words
The implant according to claim 3 wherein said post edges extend generally perpendicular to said inner attachment surface portion.
Claim 6
Dependent Claim
12 words
The implant according to claim 1 wherein said posts are each elongate.
Claim 7
Dependent Claim
15 words
The implant according to claim 5 wherein said attachment surface is formed by a laser.
Claim 8
Dependent Claim
15 words
The implant according to claim 6 wherein said posts all have a generally equal length.
Claim 9
Dependent Claim
21 words
The implant according to claim 7 wherein said posts each further have a width-increasing protrusion on a free end portion thereof.
Claim 10
Dependent Claim
114 words
An implant for use in a human body, said implant having an integral attachment surface adapted to permit ingrowth of living tissue, said attachment surface being defined (1) by a multiplicity of adjacent, generally concave surface parts within said implant having intersecting, generally aligned rims defining an inner attachment surface portion within said implant and (2) by a multiplicity of spaced posts projecting from said inner attachment surface portion, said posts each having a plurality of side attachment surfaces, which side attachment surfaces (1) are generally cylindrically concave about mutually parallel axes, (2) intersect to define generally sharp, mutually parallel post edges, and (3) are radiused at their intersections with said concave surface parts.
Claim 11
Dependent Claim
114 words
An implant for use in a human body, said implant having an integral attachment surface adapted to permit ingrowth of living tissue, said attachment surface being defined (1) by a multiplicity of adjacent, generally concave surface parts within said implant having intersecting, generally aligned rims defining an inner attachment surface portion within said implant and (2) by a multiplicity of spaced posts projecting from said inner attachment surface portion, said posts each having a plurality of side attachment surfaces, which side attachment surfaces (1) are generally cylindrically concave about mutually parallel axes, (2) intersect to define generally sharp, mutually parallel post edges, and (3) are radiused at their intersections with said concave surface parts.
Claim 12
Dependent Claim
16 words
The implant according to claim 9 wherein said concave surface parts are each generally part spherical.
Claim 13
Dependent Claim
18 words
The implant according to claim 9 wherein said axes are generally perpendicular to said inner attachment surface portion.
Claim 14
Dependent Claim
19 words
The implant according to claim 11 wherein said post edges extend generally perpendicular to said inner attachment surface portion.
Claim 15
Dependent Claim
12 words
The implant according to claim 9 wherein said posts are each elongate.
Claim 16
Dependent Claim
15 words
The implant according to calim 13 wherein said attachment surface is formed by a laser.
Claim 17
Dependent Claim
15 words
The implant according to calim 13 wherein said attachment surface is formed by a laser.
Claim 18
Dependent Claim
15 words
The implant according to claim 14 wherein said posts all have a generally equal length.
Claim 19
Dependent Claim
132 words
An implant for use in a human body, said implant having an integral attachment surface adapted to permit ingrowth of living tissue, said attachment surface being defined (1) by a multiplicity of adjacent, generally concave surface parts within said implant having intersecting, generally aligned rims defining an inner attachment surface portion within said implant and (2) by a multiplicity of spaced posts projecting from said inner attachment surface portion, said posts each having a plurality of side attachment surfaces, which side attachment surfaces (1) are generally cylindrically concave, (2) intersect to define post edges, and (3) are radiused at their intersections with said concave surface parts, so that an open, continuous space surrounding said spaced posts is provided wherein said living tissue is permitted to grow towards said inner attachment surface portion.
Claim 20
Dependent Claim
132 words
An implant for use in a human body, said implant having an integral attachment surface adapted to permit ingrowth of living tissue, said attachment surface being defined (1) by a multiplicity of adjacent, generally concave surface parts within said implant having intersecting, generally aligned rims defining an inner attachment surface portion within said implant and (2) by a multiplicity of spaced posts projecting from said inner attachment surface portion, said posts each having a plurality of side attachment surfaces, which side attachment surfaces (1) are generally cylindrically concave, (2) intersect to define post edges, and (3) are radiused at their intersections with said concave surface parts, so that an open, continuous space surrounding said spaced posts is provided wherein said living tissue is permitted to grow towards said inner attachment surface portion.
Claim 21
Dependent Claim
16 words
The implant according to claim 16 wherein said concave surface parts are each generally part spherical.
Claim 22
Dependent Claim
33 words
The implant according to claim 16 wherein said side attachment surfaces are generally cylindrically concave about mutually parallel axes and said side attachment surfaces intersect to define generally sharp, mutually parallel post edges.
Claim 23
Dependent Claim
18 words
The implant according to claim 18 wherein said axes are generally perpendicular to said inner attachment surface portion.
Claim 24
Dependent Claim
19 words
The implant according to claim 19 wherein said post edges extend generally perpendicular to said inner attachment surface portion.
Claim 25
Dependent Claim
12 words
The implant according to claim 16 wherein said posts are each elongate.
Claim 26
Dependent Claim
15 words
The implant according to claim 21 wherein said attachment surface is formed by a laser.
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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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |