Patent US3918102A successfully refreshed from Google Patents.
US3918102A
Expired / Lapsed
US
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Artificial hip joint
Assignee: Protek AG
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Filing: 1974-03-25
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Granted: 1975-11-11
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Expires: 1994-03-25
Abstract
Abstract An artificial hip joint consists of a femoral implant, a socket member and a bearing support for the socket member. The femoral implant is intended for implantation in a prepared cavity in the femur of a patient and has a stem for insertion in the cavity, a femoral neck attached to the stem and a condyl on the femoral neck. The socket member is intended for location in the patient''s hip socket which has previously been surgically enlarged and receives the femoral condyle. The bearing support is intended to be embedded in the hip socket in the patient''s pelvis and has an exterior flange, which is arranged to bear against the bone surrounding the hip socket, and a recess to accommodate the socket member. The bearing support can be formed separately from or integrally with the socket member.
Inventors
- 👤 Joachim Eichler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:10
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/8061; A61B17/8066; A61F2/36; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30136; A61F2002/30138; A61F2002/30153; A61F2002/30156; A61F2002/30158; A61F2002/30316; A61F2002/30329; A61F2002/30535; A61F2002/30594; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30787; A61F2002/3401; A61F2002/3429; A61F2002/3479; A61F2002/348; A61F2002/3487; A61F2/3609; A61F2002/3611; A61F2002/3625; A61F2002/3631; A61F2/46; A61F2002/4631; A61F2220/00; A61F2220/0025; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0017; A61F2230/0019; A61F2230/0023; A61F2230/0026; A61F2310/00; A61F2310/00005; A61F2310/00011
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
95 words
A support bearing for embodiment in a prepared socket in a pelvis comprising a generally cup-shaped element defining a substantially part-spherical internal cavity for reception of a socket for a femoral condyle and having an external flange adjacent the mouth of said cavity, said cup-shaped element comprising a plurality of fingers connected to the flange and formed integrally therewith, the fingers defining at least in part the cavity and having barbed tips, which, when viewed in a direction perpendicular to the plane of the flange axially of the opening to the cavity, resemble arrow heads.
Claim 2
Dependent Claim
95 words
A support bearing for embodiment in a prepared socket in a pelvis comprising a generally cup-shaped element defining a substantially part-spherical internal cavity for reception of a socket for a femoral condyle and having an external flange adjacent the mouth of said cavity, said cup-shaped element comprising a plurality of fingers connected to the flange and formed integrally therewith, the fingers defining at least in part the cavity and having barbed tips, which, when viewed in a direction perpendicular to the plane of the flange axially of the opening to the cavity, resemble arrow heads.
Claim 3
Dependent Claim
45 words
A support bearing according to claim 1, in which the cup-shaped element further comprises a plurality of webs connected at one end to the flange and formed integrally therewith and mutually connected at their other ends on the axis of the opening to the cavity.
Claim 4
Dependent Claim
19 words
A support bearing according to claim 2, in which the free edges of the webs are provided with corrugations.
Claim 5
Dependent Claim
19 words
A support bearing according to claim 2, in which the free edges of the webs are provided with hooks.
Claim 6
Dependent Claim
28 words
A support bearing according to claim 1, in which there are eight fingers whose tips lie a distance of from about 20 to about 25mm from the flange.
Claim 7
Dependent Claim
41 words
A support bearing according to claim 2, in which there are three webs and in which there are two fingers between each web, the fingers and webs being symmetrically disposed with respect to the axis of the opening to the cavity.
Claim 8
Dependent Claim
44 words
A support bearing according to claim 2, in which the cup-shaped element further comprises a secondary web extending in an annular fashion with respect to the axis of the opening to the cavity between the flange and the meeting point of the first-mentioned webs.
Claim 9
Dependent Claim
150 words
In or for an artificial hip joint comprising a femoral implant for implantation in a femur, the femoral implant comprising a stem for embedding in a prepared cavity in a femur of a patient, a femoral neck attached to the stem and a femoral condyle on the femoral neck, and a hemispherical socket member for reception of the femoral condyle, said socket having uninterrupted internal and external surfaces for adjustment of said socket, the improvement comprising bearing support means for the socket member adapted for embedding in a prepared cavity in the pelvis of the patient, the bearing support means comprising a substantially part-spherical element having a recess for reception of the socket member, an external flange for bearing against the bone surrounding the prepared cavity in the pelvis and at least one aperture affording communication between the external surface of the bearing support and the recess for the socket.
Claim 10
Dependent Claim
150 words
In or for an artificial hip joint comprising a femoral implant for implantation in a femur, the femoral implant comprising a stem for embedding in a prepared cavity in a femur of a patient, a femoral neck attached to the stem and a femoral condyle on the femoral neck, and a hemispherical socket member for reception of the femoral condyle, said socket having uninterrupted internal and external surfaces for adjustment of said socket, the improvement comprising bearing support means for the socket member adapted for embedding in a prepared cavity in the pelvis of the patient, the bearing support means comprising a substantially part-spherical element having a recess for reception of the socket member, an external flange for bearing against the bone surrounding the prepared cavity in the pelvis and at least one aperture affording communication between the external surface of the bearing support and the recess for the socket.
Claim 11
Dependent Claim
113 words
An artificial hiP joint comprising a femoral implant for implantation in a prepared cavity of a femur of a patient and a socket device for insertion in a previously enlarged socket in the pelvis of the patient, said socket device including a bearing support having an external flange adapted to bear against the bone surrounding the socket in the pelvis and a recess having at least one aperture affording communication between the external surface of the bearing support and said recess, said socket device further including a hemispherical socket having a continuous external surface for adjustment within said recess of said bearing support and a smooth uninterrupted internal surface for receiving femoral implant.
Claim 12
Dependent Claim
113 words
An artificial hiP joint comprising a femoral implant for implantation in a prepared cavity of a femur of a patient and a socket device for insertion in a previously enlarged socket in the pelvis of the patient, said socket device including a bearing support having an external flange adapted to bear against the bone surrounding the socket in the pelvis and a recess having at least one aperture affording communication between the external surface of the bearing support and said recess, said socket device further including a hemispherical socket having a continuous external surface for adjustment within said recess of said bearing support and a smooth uninterrupted internal surface for receiving femoral implant.
Claim 13
Dependent Claim
18 words
An artificial hip joint according to claim 9 wherein socket socket device is made of a plastics material.
Claim 14
Dependent Claim
79 words
A support bearing for embedment in a prepared socket in a pelvis comprising a generally cup-shaped element defining a substantially part-spherical internal cavity for reception of a socket for a femoral condyle and having an external flange adjacent the mouth of said cavity and having a plurality of fingers extending in cantilever fashion inwardly from said flange into said cavity to define at least one aperture affording communication between the external surface of the bearing support and the socket.
Claim 15
Dependent Claim
79 words
A support bearing for embedment in a prepared socket in a pelvis comprising a generally cup-shaped element defining a substantially part-spherical internal cavity for reception of a socket for a femoral condyle and having an external flange adjacent the mouth of said cavity and having a plurality of fingers extending in cantilever fashion inwardly from said flange into said cavity to define at least one aperture affording communication between the external surface of the bearing support and the socket.
Claim 16
Dependent Claim
18 words
A support bearing according to claim 11 in which the flange is provided with a plurality of apertures.
Claim 17
Dependent Claim
23 words
A support bearing according to claim 11, in which at least one external surface of the cup-shaped element is provided with a bead.
Claim 18
Dependent Claim
28 words
A support bearing according to claim 13, in which the bead extends in a generally radial direction with respect to the axis of the opening to the cavity.
Claim 19
Dependent Claim
68 words
In combination, a femoral implant having a femoral condyle; a socket member for receiving said femoral condyle; and a support bearing having a part-spherical internal cavity for reception of said socket, an external flange, and a plurality of fingers extending from said flange and defining at least one aperture within said cavity to permit passage of a bone cement for anchoring of said socket in a pelvis cavity.
Claim 20
Dependent Claim
68 words
In combination, a femoral implant having a femoral condyle; a socket member for receiving said femoral condyle; and a support bearing having a part-spherical internal cavity for reception of said socket, an external flange, and a plurality of fingers extending from said flange and defining at least one aperture within said cavity to permit passage of a bone cement for anchoring of said socket in a pelvis cavity.
Claim 21
Dependent Claim
76 words
A support bearing for embedment in a prepared socket in a pelvis comprising a generally cup-shaped element defining a substantially part-spherical internal cavity for reception of a socket for a femoral condyle and having an external flange adjacent the mouth of said cavity, and having a plurality of spaced webs defining a plurality of apertures therebetween and a skeletal structure, each said aperture affording communication between the external surface of the bearing support and the socket.
Claim 22
Dependent Claim
76 words
A support bearing for embedment in a prepared socket in a pelvis comprising a generally cup-shaped element defining a substantially part-spherical internal cavity for reception of a socket for a femoral condyle and having an external flange adjacent the mouth of said cavity, and having a plurality of spaced webs defining a plurality of apertures therebetween and a skeletal structure, each said aperture affording communication between the external surface of the bearing support and the socket.
Claim 23
Dependent Claim
63 words
In combination, a femoral implant having a femoral condyle; a socket member for receiving said femoral condyle; and a support bearing having a part-spherical internal cavity for reception of said socket, an external flange, and a plurality of webs defining at least one aperture within said cavity to permit passage of a bone cement for anchoring of said socket in a pelvic cavity.
Claim 24
Dependent Claim
63 words
In combination, a femoral implant having a femoral condyle; a socket member for receiving said femoral condyle; and a support bearing having a part-spherical internal cavity for reception of said socket, an external flange, and a plurality of webs defining at least one aperture within said cavity to permit passage of a bone cement for anchoring of said socket in a pelvic cavity.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |