US3818513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable joint prosthesis
Assignee: Rhone Poulenc SA
•
Filing: 1972-10-26
•
Granted: 1974-06-25
•
Expires: 1992-10-26
Abstract
Abstract Implantable prosthesis of a joint comprising a central flexible hollow body portion, in the form of a tube of silicone elastomer, into the ends of which are inserted medullary pins of the same material, to extend outwardly from the body portion for insertion into the medullary ducts of the bones to be joined. The pins may be adhesively secured to the bones, or at least partly surrounded by a textile sheath colonizable by bone tissue. The cavity may be filled with sterile air or liquid.
Inventors
- 👤 J Pillet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/42; A61F2/30767; A61F2/30907; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30069; A61F2002/3008; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30125; A61F2002/30316; A61F2002/30329; A61F2002/30448; A61F2002/30535; A61F2002/30563; A61F2002/30593; A61F2220/00; A61F2220/0025; A61F2220/005; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0008; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098; Y; Y10; Y10S; Y10S128/00; Y10S128/21
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
56 words
Implantable prosthesis of a joint comprising a central flexible hollow body portion, defining a central unobstructed cavity, enabling the central portion to be bent with flattening of the opposite walls and two medullary pins extending outwardly from said central portion, each dimensioned effective to be inserted into the medullary ducts of the bones to be joined.
Claim 2
Dependent Claim
56 words
Implantable prosthesis of a joint comprising a central flexible hollow body portion, defining a central unobstructed cavity, enabling the central portion to be bent with flattening of the opposite walls and two medullary pins extending outwardly from said central portion, each dimensioned effective to be inserted into the medullary ducts of the bones to be joined.
Claim 3
Dependent Claim
35 words
Implantable prosthesis of a joint as claimed in claim 1, wherein said central body portion is in the form of a tubular sleeve, having ends, and wherein said medullary pins are inserted into said ends.
Claim 4
Dependent Claim
20 words
Implantable prosthesis of a joint as claimed in claim 1, wherein said central body portion is formed of silicone elastomer.
Claim 5
Dependent Claim
39 words
Implantable prosthesis of a joint as claimed in claim 1, wherein said central flexible hollow body portion is of substantially elliptical transverse cross-section, the ratio of the major axis length to minor axis length being between 1 and 2.
Claim 6
Dependent Claim
22 words
Implantable prosthesis of a joint as claimed in claim 1, wherein said pins are interconnected solely by said flexible hollow body portion.
References Cited (Backward Citations)
US3593342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |