US3745590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articulating prosthesis with ligamentous attachment
Assignee: Bayer Corp
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Filing: 1971-06-25
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Granted: 1973-07-17
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Expires: 1991-06-25
Abstract
Abstract A prosthesis useful in the repair or replacement of damaged or diseased joints in the human body, in particular of those which require unrestricted orbiting motion such as the base of the thumb, carpal bones of the wrist, shoulder joints and the like. A molded body portion replaces at least the articulating portion of the bone to be treated and one or more ligamentous elements. The body portion is suitably made of a biocompatible elastomer, especially one which is reinforced with a fibrous material such as a web or mesh of Dacron or Teflon. The ligamentous element can be a cord, flat tape or a tube such as a fabric tube of Dacron or Teflon, and in some embodiments is protected against tissue ingrowth over at least its intermediate length. In a carpalmetacarpal prosthesis for a thumb, for example, the body portion also has a metacarpal stem portion having a tissue-ingrowthreceiving surface, such as a complete or partial covering of Dacron velour, the core of such stem being suitably a biocompatible elastomer.
Inventors
- 👤 J Stubstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:23
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30907; A61F2/42; A61F2/4241; A61F2/4261; A61F2/08; A61F2/0811; A61F2/3094; A61F2/30965; A61F2/40; A61F2/4202; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30069; A61F2002/3007; A61F2002/30108; A61F2002/30199; A61F2002/30205; A61F2002/30316; A61F2002/30329; A61F2002/30448; A61F2002/30462; A61F2002/30535; A61F2002/30563; A61F2/30771; A61F2002/30878; A61F2002/4256; A61F2002/4258; A61F2002/4271; A61F2002/4274; A61F2002/4276; A61F2002/4287; A61F2002/4292; A61F2220/00; A61F2220/0025; A61F2220/005; A61F2220/0075; A61F2230/00; A61F2230/0063; A61F2230/0067; Y; Y10; Y10S; Y10S128/00; Y10S128/21
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
15 words
A prosthesis as in claim 1 wherein said shaped body portion is of silicone rubber.
Claim 2
Dependent Claim
14 words
A prosthesis as in claim 2 wherein said rubber is reinforced with fibrous material.
Claim 3
Dependent Claim
24 words
A prosthesis as in claim 3 wherein said fibrous material is a mesh of fabric selected from the group consisting of Dacron and Teflon.
Claim 4
Dependent Claim
21 words
A prosthesis as in claim 1 wherein said body portion has a centrally concave end surface, and a rounded shoulder therearound.
Claim 5
Dependent Claim
16 words
A prosthesis as in claim 1 wherein there are provided a plurality of said ligamentous means.
Claim 6
Dependent Claim
24 words
A prosthesis as in claim 1 wherein said ligamentous means is a tube of fabric selected from the group consisting of Dacron and Teflon.
Claim 7
Dependent Claim
31 words
A prosthesis as in claim 7 wherein said tube is provided with at least one inner cord extending through the length of said tube and attached only to said shaped body.
Claim 8
Dependent Claim
23 words
A prosthesis as in claim 1 wherein said ligamentous means is of tissue-ingrowth-receiving fabric and has a tissue-ingrowth-resistant surface throughout its intermediate length.
Claim 9
Dependent Claim
165 words
A prosthesis for replacement of the combination of the articular portion of a first bone selected from the group consisting of the metacarpal and metatarsal bones and a second bone selected from the group consisting of the carpal and tarsal bones at a joint to enable substantially unrestricted orbital motion therein, comprising in combination: a. a shaped body portion of biocompatible material conforming generally to the shape of said articular portion and said second bone and having a top face, b. at least one fabric ligamentous eleMent affixed to said body portion and adapted to attach to an adjacent body structure, each said ligamentous element being affixed at one of its ends to said body portion, c. means to attach said element to an adjacent body structure, d. a conical stem extending from the bottom of said body portion opposite said top face, and e. a tissue-ingrowth-receiving fabric at least partially covering the surface of said stem, said stem being formed of a biocompatible elastomer.
Claim 10
Dependent Claim
27 words
A prosthesis as in claim 10 wherein said stem is made of silicone rubber reinforced with mesh fabric selected from the group consisting of Dacron and Teflon.
Claim 11
Dependent Claim
36 words
A prosthesis as in claim 10 wherein said ligamentous element comprises a pair of flexible knitted Dacron tubes arranged side by side and covered over the intermediate length of each with a tissue-ingrowth-resistant flexible elastomeric coating.
Claim 12
Dependent Claim
34 words
A prosthesis as in claim 10 wherein each said ligamentous element is a tube provided with a least one inner cord extending through the length of said tube attached only to said shaped body.
Claim 13
Dependent Claim
12 words
A prosthesis as in claim 10 wherein said fabric is Dacron velour.
Claim 14
Dependent Claim
95 words
A prosthesis for replacement of a bone in a human joint having orbital motion comprising a shaped body of biocompatible elastomer reinforced with biocompatible fibrous material and comforming generally to the shape of said bone and having a contoured surface means to produce said orbital motion, and at least one flexible fabric ligamentous element affixed to said body having at least a portion which is tissue ingrowth receptive whereby it is adapted to be attached to an adjacent body structure at the other end by tissue ingrowth so as to stabilize said joint against dislocation.
Claim 15
Dependent Claim
100 words
A prosthesis for replacement of a carpal lunate bone in a human wrist comprising a shaped body conforming approximately to the shape of said carpal lunate to be replaced and formed of silicone rubber, said body having a contoured upper face adapted to articulate with a carpal bone, at least one ligamentous element disposed at each end of said upper face, each of said elements being a flexible knitted tube of fabric selected from the group consisting of Dacron and Teflon and adapted to attach to an adjacent body structure to stabilize said shaped body when emplaced in said wrist.
Claim 16
Dependent Claim
22 words
A prosthesis as in claim 16 wherein a flexible cord is freely disposed within said tube and attached to said shaped body.
Claim 17
Dependent Claim
82 words
A bone prosthesis, comprising, a. a molded body portion generally conforming to the shape of the bone to be replaced and provided with a contoured surface means adapted to produce an articulating motion with a cooperating joint part, and having b. a stem portion covered with biocompatible fabric, and c. at least one fabric ligamentous element secured to said body portion having at least a portion which is tissue ingrowth receptive, and adapted to attach to a body tissue by tissue ingrowth.
Claim 18
Dependent Claim
112 words
A prosthesis for replacement of a bone in a human joint having orbital motion comprising a shaped body of biocompatible elastomer reinforced with biocompatible fibrous material and conforming generally to the shape of said bone and having a contoured surface means to produce said orbital motion, a stem portion secured to said body portion and tapered therefrom and covered with biocompatible tissue-ingrowth-receptive fabric, and at least one flexible fabric ligamentous element affixed to said body having at least a portion which is tissue ingrowth receptive whereby it is adapted to be attached to an adjacent body structure at the other end by tissue ingrowth so as to stabilize said joint against dislocation.
References Cited (Backward Citations)
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US3196462A
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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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |