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US4936856A
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Hip joint socket prosthesis
Assignee: Waldemar Link GmbH and Co KG
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Filing: 1988-11-01
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Granted: 1990-06-26
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Expires: 2008-11-01
Abstract
Abstract Hip joint socket prosthesis with devices for anchoring to the bone. These comprise, for bridging an interspace between the socket surface and the bone, at least one support which projects from the socket surface and which is preferably extensible from the socket inside.
Inventors
- 👤 Arnold Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:15
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30721; A61F2/30749; A61F2/30724; A61F2/32; A61F2/34; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61B17/88; A61B17/8875; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30143; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30332; A61F2002/30405; A61F2002/30535; A61F2002/30537; A61F2002/3055; A61F2002/30579; A61F2002/30601; A61F2002/30604; A61F2002/30616; A61F2/30734; A61F2002/30736; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30784; A61F2002/30787; A61F2002/3085; A61F2002/30878; A61F2002/30886; A61F2002/30891; A61F2002/30894; A61F2002/3401; A61F2002/3412; A61F2002/3429; A61F2/46; A61F2/4637; A61F2002/4638; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2250/00; A61F2250/0058; A61F2250/006; A61F2250/0064
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
128 words
An acetabular prosthesis to be supported in a cavity in the hip bone, comprising: a socket member having means (2) for anchoring the socket member to the bone, an outer surface for facing the portion of the bone defining the cavity, and an inner surface (9) for receiving a prosthesis insert; at least one elongated support (7,13-16) adapted to be coupled to the socket member and configured to extend outwardly a variable length from the outer surface into the cavity; said support having means accessible from the socket inner surface for selectively adjusting the variable length after the socket member has been anchored to the bone, thereby bridging any interspace that may exist between the socket member outer surface and said portion of the bone defining the cavity.
Claim 2
Dependent Claim
128 words
An acetabular prosthesis to be supported in a cavity in the hip bone, comprising: a socket member having means (2) for anchoring the socket member to the bone, an outer surface for facing the portion of the bone defining the cavity, and an inner surface (9) for receiving a prosthesis insert; at least one elongated support (7,13-16) adapted to be coupled to the socket member and configured to extend outwardly a variable length from the outer surface into the cavity; said support having means accessible from the socket inner surface for selectively adjusting the variable length after the socket member has been anchored to the bone, thereby bridging any interspace that may exist between the socket member outer surface and said portion of the bone defining the cavity.
Claim 3
Dependent Claim
34 words
The prosthesis as claimed in claim 1, wherein the socket includes a plurality of threaded bores (5) and each support (7,13-16) is in the form of a pin which is at least partially threaded.
Claim 4
Dependent Claim
32 words
The prosthesis as claimed in claim 1, wherein the support (7,13-16) has an outer end remote from the base member and is provided, at the outer end, with a support plate (11).
Claim 5
Dependent Claim
19 words
The prosthesis as claimed in claim 1 wherein the support (7,13-16) is hollow for receiving a bone screw (10).
Claim 6
Dependent Claim
22 words
The prosthesis as claimed in claim 1 wherein the support comprises several sleeves (13-16) which can be screwed telescopically into one another.
Claim 7
Dependent Claim
51 words
The prosthesis as claimed in claim 5, wherein the socket has a thickness and includes at least one threaded bore and the telescope sleeves (13-16), in the retracted state, have a common length which is not substantially greater than the thickness of the socket part (1) containing the threaded bore (5).
Claim 8
Dependent Claim
132 words
An acetabular prosthesis to be anchored against a hip bone portion that includes a bone cavity, comprising: a rigid base member (1) having an outer surface including means (2) for directly rigidly engaging some of the bone (3,4) that forms said bone portion, while a portion of said outer surface is exposed to said cavity (12) and spaced from the bone (8), and an inner surface (9) defining a socket for receiving an insert member; and at least one support element (7,13-16) adapted to be coupled to the socket member, said support element being accessible from the inner surface and configured to extend outwardly a variable length from the outer surface into the cavity, whereby the variable length may be selectively adjusted after the socket member has been anchored to the bone.
Claim 9
Dependent Claim
132 words
An acetabular prosthesis to be anchored against a hip bone portion that includes a bone cavity, comprising: a rigid base member (1) having an outer surface including means (2) for directly rigidly engaging some of the bone (3,4) that forms said bone portion, while a portion of said outer surface is exposed to said cavity (12) and spaced from the bone (8), and an inner surface (9) defining a socket for receiving an insert member; and at least one support element (7,13-16) adapted to be coupled to the socket member, said support element being accessible from the inner surface and configured to extend outwardly a variable length from the outer surface into the cavity, whereby the variable length may be selectively adjusted after the socket member has been anchored to the bone.
Claim 10
Dependent Claim
40 words
The prosthesis of claim 7, wherein the base member has at least one threaded through bore (5) and one of the support elements is in the form of a pin (7, 13-16) having a threaded portion engaging said threaded bore.
Claim 11
Dependent Claim
15 words
The prosthesis of claim 8, wherein the base member includes a multiplicity of threaded bores.
Claim 12
Dependent Claim
28 words
The prosthesis of claim 7, wherein at least one support element is hollow for receiving a bone screw (10) passing from the base member into the bone portion.
Claim 13
Dependent Claim
22 words
The prosthesis of claim 7, wherein the support element includes a transversely oriented plate portion (11) for bearing against said bone portion.
Claim 14
Dependent Claim
21 words
The prosthesis of claim 7, wherein the support element includes several sleeves (13-16) that can be telescopically screwed into one another.
Claim 15
Dependent Claim
56 words
The prosthesis of claim 12, wherein the base member has a thickness and includes a bore to which a support element is coupled, and the sleeves of the support element have a telescopically retracted condition in which the support element has an overal length which is not substantially greater than the thickness of the base 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) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |