EP0578322A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Acetabulum for an artificial hip joint
Assignee: Bristol Myers Squibb Co
•
Filing: 1993-07-06
•
Granted: —
•
Expires: 2013-07-06
Abstract
Abstract An acetabulum for an artificial hip is disclosed, which has a metal outer shell (2) and an insert piece (20) in the outer shell, which has a recess (22) to accommodate the condyle of the artificial hip on its inner side. In order to accomplish an especially low-wear and shape-stable artificial joint, the insert consists of metal.
Inventors
- 👤 Martin Schug
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 04:51
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30907; A61F2/32; A61F2/34; A61F2002/30001; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2002/3092; A61F2002/30934; A61F2002/3429; A61F2002/3445; A61F2002/3448; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00029
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
Acetabulum for an artificial hip, with a metal outer shell and an insert piece in the outer shell, having a recess on its inner side to accommodate the condyle of an artificial hip, characterised in that the insert (20) consists of metal.
Claim 2
Dependent Claim
28 words
Acetabulum according to claim 1, characterised in that the insert (20) can be secured in the outer shell (2) by means of a conical clamping connection (8, 30).
Claim 3
Dependent Claim
49 words
Acetabulum according to claim 2, characterised in that the inner surface (4) of the outer shell (2) is fashioned as an inner cone (12) for a specified axial height, and the outer surface of the insert (20) is fashioned as an outer cone (30) for a corresponding axial height.
Claim 4
Dependent Claim
46 words
Acetabulum according to claim 3, characterised in that the inner cone (12) of the outer shell and the outer cone (30) of the insert (20) extend for a specified axial height from the open edge of the shell (8) to the pole of the outer shell.
Claim 5
Dependent Claim
37 words
Acetabulum according to one of the previous claims, characterised in that the outer shell (2) has a central bore (10) at its pole, and the insert (20) has a central pin (34) protruding into the bore (10).
Claim 6
Dependent Claim
27 words
Acetabulum according to one of the previous claims, characterised in that at least one cavity (14) is provided between the insert (20) and the outer shell (2).
Claim 7
Dependent Claim
35 words
Acetabulum according to claim 6, characterised in that the cavity (14) between the insert (20) and the outer shell (2) between the conical clamping connection (12, 30) and the central pin (34) are rotationally symmetrical.
Claim 8
Dependent Claim
52 words
Acetabulum according to one of the previous claims, characterised in that the insert (20) is fashioned as a thin-walled inner shell, which has a radially and outwardly directed flange (28) in the edge (27) bordering the recess (22), and the flange is fashioned as an outer cone (30) on its circumferential surface.
Claim 9
Dependent Claim
29 words
Acetabulum according to claim 1, characterised in that the outer shell (2) on its inner surface and the insert (20) on its outer surface are provided with interacting threading.
Claim 10
Dependent Claim
27 words
Acetabulum according to one of the previous claims, characterised in that the outer shell (2) has an open-pore or open-cell surface structure (6) on its outer surface.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.