US3990118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint prosthesis
Assignee: Roche Diagnostics Corp
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Filing: 1975-09-22
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Granted: 1976-11-09
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Expires: 1995-09-22
Abstract
Abstract An implantable prosthetic joint comprising a first member and a second member, both of which include a stem portion implantable in bone. The first member has a neck portion and a protuberant head portion attached to the neck portion. The second member has a head-receiving cavity and a slot in communication with the cavity to provide hinge-like motion of the joint as the neck portion is moved within the slot and the head portion rotated within the cavity. The head-receiving portion of the second member includes a transverse channel communicating with the cavity and a transverse slot communicating with the transverse channel whereby the head and neck portion of the first member may be inserted into the head-receiving portion of the second member in a direction transverse to the plane established by the hinge-like motion of the first member relative to the second member as the neck portion of the first member moves along the channel in the head-receiving portion of the second member.
Inventors
- 👤 James W. Strickland
- 👤 Allan Vegell
- 👤 Terry L. Woodling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:28
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/42; A61F2/4241; A61F2/30767; A61F2/30771; A61F2002/30001; A61F2002/30316; A61F2002/30535; A61F2002/30574; A61F2002/30621; A61F2002/30624; A61F2002/4243; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32861; Y10T403/32918
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
67 words
An implantable prosthetic joint comprising: a. a first component including, 1. a stem portion including stem means for affixing the first component to bone, 2. a neck portion on one end of the stem portion, and 3. a protuberant head portion on the neck portion; and b. a second component including, 1. a stem portion including stem means for affixing the second component to bone, and 2.
Claim 2
Dependent Claim
67 words
An implantable prosthetic joint comprising: a. a first component including, 1. a stem portion including stem means for affixing the first component to bone, 2. a neck portion on one end of the stem portion, and 3. a protuberant head portion on the neck portion; and b. a second component including, 1. a stem portion including stem means for affixing the second component to bone, and 2.
Claim 3
Dependent Claim
170 words
a head-receiving portion on one end of the stem portion having a head-receiving cavity removably retaining the headed portion of the first member, an elongated principal slot defined by a first side wall and a second side wall intersecting said cavity and slidably receiving the neck portion of the first member, permitting hinged motion of the first member relative to the second member in a first plane through movement of the neck portion along the principal slot in its longest direction between said first and second side walls, and having insertion means for inserting the head portion of the first member into said cavity in a direction transverse to said first plane, the insertion means comprising head-receiving channel extending from a lateral first face of the head-receiving portion of the second component in a direction transverse to said first plane of motion and communicating with said cavity and having an elongated transverse slot intersecting said transverse channel and sized to allow passage of the neck portion of the first component
Claim 4
Dependent Claim
170 words
a head-receiving portion on one end of the stem portion having a head-receiving cavity removably retaining the headed portion of the first member, an elongated principal slot defined by a first side wall and a second side wall intersecting said cavity and slidably receiving the neck portion of the first member, permitting hinged motion of the first member relative to the second member in a first plane through movement of the neck portion along the principal slot in its longest direction between said first and second side walls, and having insertion means for inserting the head portion of the first member into said cavity in a direction transverse to said first plane, the insertion means comprising head-receiving channel extending from a lateral first face of the head-receiving portion of the second component in a direction transverse to said first plane of motion and communicating with said cavity and having an elongated transverse slot intersecting said transverse channel and sized to allow passage of the neck portion of the first component
Claim 5
Dependent Claim
78 words
therethrough, the transverse slot intersecting the principal slot. 2. The joint of claim 1 in which the transverse slot of the head-receiving portion of the second member is, at least in the vicinity of the principal slot, defined by a flexible material making the transverse slot slightly narrower than the thickness of the neck portion of the first member, thereby providing a snap-in fit as the neck portion is inserted past the transverse slot into the principal slot.
Claim 6
Dependent Claim
29 words
The joint of claim 1 in which the head portion of the first component is elongated having a principal dimension transverse to the neck portion of the first member.
Claim 7
Dependent Claim
45 words
The joint of claim 3 in which the transverse channel extends beyond the cavity to an opening in a second face of the head-receiving portion of the second component, said second face being opposite the first face of the head-receiving portion of the second component.
Claim 8
Dependent Claim
33 words
The joint of claim 4 in which the ends of the elongated head portion are received in portions of the transverse channel outside the cavity in the head-receiving portion of the second component.
Claim 9
Dependent Claim
41 words
The joint of claim 5 in which one end of the elongated head portion of the first component is adjacent the opening in the second face of the head-receiving portion of the second component within a portion of the transverse channel.
Claim 10
Dependent Claim
79 words
The joint of claim 6 in which the head-receiving portion of the second member is, along the transverse slot, a flexible plastic material with the transverse slot being slightly narrower than the thickness of the neck portion of the first member until the transverse slot is in communication with the principal slot of the head-receiving portion of the second component, thereby providing a snap-in fit as the neck portion is inserted past the transverse slot into the principal slot.
Claim 11
Dependent Claim
26 words
The joint of claim 7 in which the principal slot at its point furthest from the transverse slot terminates in an opening wider than the slot.
Claim 12
Dependent Claim
36 words
The joint of claim 1 in which the axis of rotation of the head portion of the first component in the second component does not intersect the centerline of the stem portion of the second component.
Claim 13
Dependent Claim
33 words
The joint of claim 1 which further comprises a thin shield portion, between the stem portion and neck portion of the first component, extending outwardly of the neck portion and said stem portion.
Claim 14
Dependent Claim
47 words
The joint of claim 1 in which the stem portion of each joint component has a principal dimension, the directions of the principal dimensions being essentially aligned when the joint is in its extended position and being essentially perpendicular when the joint is in its bent position.
Claim 15
Dependent Claim
58 words
The joint of claim 11 in which the elongated transverse slot is located such that the joint is in its bent position when the neck portion of the first component passes through said elongated transverse slot and the neck portion is misaligned with said elongated transverse slot to prevent passage therethrough in positions other than said bent position.
Claim 16
Dependent Claim
98 words
The joint of claim 3 in which the principal slot at its point furthest from the transverse slot terminates in an opening wider than the principal slot, and in which the head portion of the first component is tapered from a generally centrally located thickest portion in the vicinity of the neck portion to narrower portions in each direction along the principal dimension of the head portion, thereby permitting a limited rocking motion of the first component relative to the second component when the neck of the first component is in said wider opening of the principal slot.
Claim 17
Dependent Claim
23 words
The joint of claim 13 in which the elongated principal slot flares outwardly from a smallest width at its intersection with the cavity.
Claim 18
Dependent Claim
51 words
The joint of claim 1 in which the transverse slot in the second component is located such that the neck of the first component is rotated more than 90° from a fully extended position of the joint when the neck portion passes through the transverse slot for assembly of the joint.
Claim 19
Dependent Claim
50 words
The joint of claim 1 in which the transverse slot in the second component is located such that the neck of the first component is rotated essentially 90° from a fully extended position of the joint when the neck portion passes through the transverse slot for assembly of the joint.
References Cited (Backward Citations)
US1101682A
Cited
US3506982A
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US3638243A
Cited
US3765033A
Cited
US3837008A
Cited
US3760427A
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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) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |