Joint prosthesis with contoured pin
US4204284A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1977 |
| Grant date | May 27, 1980 |
| Priority date | — |
| Expiry date | Nov 16, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/454
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A joint prosthesis comprises two relatively inextensible primary components that are spaced apart from one another. Disposed between and spaced from each of the primary components is a pivot member that is also fabricated of relatively inextensible material. When viewed in section taken normal to its central longitudinal axis, the pivot member has two discrete arcuate surfaces that are spaced apart from one another about the circumference of the pivot member. One of the primary components of the prosthesis is resiliently secured to one of the arcuate surfaces of the pivot member, while the other primary component of the prosthesis is resiliently secured to the other arcuate surface of the pivot member. The resilient connections between the pivot member and the primary components permit relative rotation between the pivot member and each of the primary components. As a result, the two primary components can rotate toward and away from each other about an axis that is disposed at least adjacent to and at least approximately parallel to the longitudinal axis of the pivot member. The resilient connections between the arcuate surfaces of the pivot member and the primary components of th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.