Patent US4026331A successfully refreshed from Google Patents.
US3813699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic hip joint
Assignee: Individual
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Filing: 1973-01-15
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Granted: 1974-06-04
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Expires: 1993-01-15
Abstract
Abstract A prosthetic device and more particularly a hip-joint prosthesis having a fully assembled composite structure of a femoral head, neck and shank to be positioned in and on the femur, a cup for positioning in the acetabulum for relative articulation therein to closely approximate the anatomical function of the natural femur head and acetabulum joint with the femoral head and cup being connected with each other to restrain their separation, but to permit their relative movement.
Inventors
- 👤 R Giliberty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:14
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61F2002/3208; A61F2002/3233; A61F2/34; A61F2002/3453; A61F2002/3466; A61F2002/348; A61F2002/3493; A61F2/3609; A61F2002/3611; A61F2002/3625; A61F2002/3631; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00029
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
A hip-joint prosthesis comprising a replacement member having a substantially spherical head for placement in articulating relation to an acetabulum opening, an inner cup fabricated of material of low frictional resistance having a substantially spherical wall bounding a chamber of a corresponding substantially spherical shape and size in relation to that of said head and disposed in covering relation thereover so as to permit initial articulating traverses of comparatively large extent between said head and said inner cup substantially duplicating the movements of the femur head relative to the acetabulum, and an outer cup fabricated of a metal alloy which is inert when disposed in live body tissue, said outer cup being disposed in covering fixed relation over said inner cup and having an unbroken, contiNuously smooth outer spherical cup surface free of radial projections and interruptions for allowing substantially universal articulating traverses within the acetabulum opening.
Claim 2
Dependent Claim
147 words
A hip-joint prosthesis comprising a replacement member having a substantially spherical head for placement in articulating relation to an acetabulum opening, an inner cup fabricated of material of low frictional resistance having a substantially spherical wall bounding a chamber of a corresponding substantially spherical shape and size in relation to that of said head and disposed in covering relation thereover so as to permit initial articulating traverses of comparatively large extent between said head and said inner cup substantially duplicating the movements of the femur head relative to the acetabulum, and an outer cup fabricated of a metal alloy which is inert when disposed in live body tissue, said outer cup being disposed in covering fixed relation over said inner cup and having an unbroken, contiNuously smooth outer spherical cup surface free of radial projections and interruptions for allowing substantially universal articulating traverses within the acetabulum opening.
Claim 3
Dependent Claim
39 words
A hip-joint prosthesis as defined in claim 1 wherein said outer and inner cups have an annular wall section bounding the opening into said chamber thereof which is adpated to holdingly engage said spherical head against withdrawing movement therefrom.
Claim 4
Dependent Claim
44 words
A hip-joint prosthesis as defined in claim 2 wherein said fabrication material of said inner cup is a resilient plastic, such that the assembly of said metal outer cup and said inner plastic cup is adapted to snap in place over said spherical head.
Claim 5
Dependent Claim
15 words
A hip-joint prosthesis as defined in claim 3 wherein said inner cup is a polyethylene.
Claim 6
Dependent Claim
120 words
In a prosthesis for replacing at least part of a body joint comprising, in combination, a substantially spherical head member for placement in articulating relation in a joint opening, a socket for said head, said socket having a continuously smooth unbroken outer substantially spherical surface, free of radial projections and interruptions for allowing substantially universal articulating traverses within the joint opening, said socket and head including cooperating means connecting said socket to and about said head for relative movement but to prevent relative separation thereof, and a low friction liner between said head and socket to permit relative movement between said head and socket and including means to connect the same to said head to prevent the relative separation thereof.
Claim 7
Dependent Claim
120 words
In a prosthesis for replacing at least part of a body joint comprising, in combination, a substantially spherical head member for placement in articulating relation in a joint opening, a socket for said head, said socket having a continuously smooth unbroken outer substantially spherical surface, free of radial projections and interruptions for allowing substantially universal articulating traverses within the joint opening, said socket and head including cooperating means connecting said socket to and about said head for relative movement but to prevent relative separation thereof, and a low friction liner between said head and socket to permit relative movement between said head and socket and including means to connect the same to said head to prevent the relative separation thereof.
Claim 8
Dependent Claim
21 words
In a prosthesis as defined in claim 5 wherein said liner is fabricated of a material having a low friction surface.
Claim 9
Dependent Claim
38 words
In a prosthesis as defined in claim 6 wherein said cooperating means connecting said socket, liner and head comprises interfitting substantially spherical shapes permitting the insertion of said liner within said socket and said head within said liner.
Claim 10
Dependent Claim
38 words
In a prosthesis as defined in claim 7 wherein said fabrication material of said liner is a resilient plastic such that the assembly of said socket and said liner is adapted to snap in place over said head.
Claim 11
Dependent Claim
13 words
In a prosthesis as defined in claim 8 wherein said liner is polyethylene.
Claim 12
Dependent Claim
131 words
A hip-joint prosthesis comprising a femur stem, a femur configured head, and a neck narrower than said stem and head intermediate the same to connect said head and stem together, a cup having an unbroken, continuously smooth outer surface free of projections and interruptions for insertion into and for allowing substantially universal traverses within an acetabulum opening, a liner of inert low-friction material retained in said cup against removal therefrom, said liner having a socket defined therein, said head being movable within and relative to said socket, said socket having a smooth surface shaped to correspond with that of said head and said socket terminating in narrowed opening engageable with and about said head adjacent said narrower neck to restrain the withdrawal of said head from said socket through said opening.
Claim 13
Dependent Claim
131 words
A hip-joint prosthesis comprising a femur stem, a femur configured head, and a neck narrower than said stem and head intermediate the same to connect said head and stem together, a cup having an unbroken, continuously smooth outer surface free of projections and interruptions for insertion into and for allowing substantially universal traverses within an acetabulum opening, a liner of inert low-friction material retained in said cup against removal therefrom, said liner having a socket defined therein, said head being movable within and relative to said socket, said socket having a smooth surface shaped to correspond with that of said head and said socket terminating in narrowed opening engageable with and about said head adjacent said narrower neck to restrain the withdrawal of said head from said socket through said opening.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |