US3982281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hip-joint prosthesis device
Assignee: Individual
•
Filing: 1975-07-25
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Granted: 1976-09-28
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Expires: 1995-07-25
Abstract
Abstract The patented prosthesis device of U.S. Pat. No. 3,813,699 is effectively limited in its drifting movement deeper into its cooperating acetabular opening, which could cause rupture of the acetabular floor, by a laterally oriented lip, even though the size of the lip, in and of itself, is not physically capable of this performance. This is achieved by providing an initial clearance position to the lip and thus allowing a settling movement in the device before the lip is permitted to contact bone structure. During said settling movement, favorable secondary tissue changes occur in the acetabular opening which impede movement; thus, said tissue changes together with the lip making contact with bone structure hold the device in position, whereas premature contact of the lip would have merely indented or otherwise adversely modified the bone structure and interfered with achieving this result.
Inventors
- 👤 Richard P. Giliberty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:05
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2002/3233; A61F2/34; A61F2002/3429; A61F2002/348; A61F2002/3493; A61F2/36; A61F2/3609; A61F2002/3625; A61F2002/3631; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00029
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
In a hip-joint prosthesis device of the type surgically implanted in a manually shaped acetabular opening having an assembly of outer and inner spherical cups frictionally engaged about a spherical head of said device, the improvement to said outer spherical cup comprising a cylindrical wall section thereon extending in pending relation beyond said inner cup so as to define a clearance space for settling movement of said device within said acetabular opening, and a laterally oriented lip on said wall section adapted to engage the anatomical bounding structure of said acetabular opening only after said settling movement of said device, whereby said lip is assisted in limiting the settling movement of said device by favorable secondary tissue changes occurring in said acetabular opening prior to said engaging contact of said lip.
Claim 2
Dependent Claim
131 words
In a hip-joint prosthesis device of the type surgically implanted in a manually shaped acetabular opening having an assembly of outer and inner spherical cups frictionally engaged about a spherical head of said device, the improvement to said outer spherical cup comprising a cylindrical wall section thereon extending in pending relation beyond said inner cup so as to define a clearance space for settling movement of said device within said acetabular opening, and a laterally oriented lip on said wall section adapted to engage the anatomical bounding structure of said acetabular opening only after said settling movement of said device, whereby said lip is assisted in limiting the settling movement of said device by favorable secondary tissue changes occurring in said acetabular opening prior to said engaging contact of said lip.
Claim 3
Dependent Claim
84 words
An improved hip-joint prosthesis device as claimed in claim 1 wherein said inner cup extends in covering relation about said spherical head to an extent sufficient to obviate frictional disengagement therebetween, and said depending outer cup cylindrical wall section extends beyond said inner cup so as to locate said lip thereon in a clearance position from said acetabular opening anatomical bounding structure, whereby said device during said settling movement is not restricted by said lip from partaking of pivotal movement in said acetabular opening.
Claim 4
Dependent Claim
45 words
An improved hip-joint prosthesis device as claimed in claim 2 wherein said outer cup depending wall section bounds an internal clearance adjacent the termination of said inner cup, whereby said inner cup is not restricted from movement into said clearance relative to said outer cup.
Claim 5
Dependent Claim
55 words
An improved hip-joint prosthesis device as claimed in claim 3 wherein said outer cup depending cylindrical wall section and laterally oriented lip thereon define an L-shape in cross-section, whereby one leg thereof functions effectively to limit movement in the direction of said other leg upon contact with a stationary object in said direction of movement.
Claim 6
Dependent Claim
52 words
An improved hip-joint prosthesis device as claimed in claim 4 wherein said L-shape is located below said spherical head of said prosthesis device and contributes to the structural rigidity bounding said opening into said outer cup to in turn assist in maintaining said cups in their engaged relation about said spherical head.
References Cited (Backward Citations)
US3813699A
Cited
US3903549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |