Prosthesis for tensile load-carrying tissue and method of manufacture
US5258040A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1991 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Feb 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/909
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The inventive article is a ligament or tendon prosthesis having multiple longitudinally parallel strands of microporous expanded polytetrafluoroethylene, the individual strands having an average porosity greater than 30% in the areas requiring tissue ingrowth. Additionally, strand dimensions and microstructure are selected so that tissue can penetrate throughout. The prosthesis is formed from multiple loops of a single continuous filament. Densified eyelets are formed in the loop for mounting to bone. The strands are twisted 180.degree. or arranged in a loose braid about the prosthesis axis for improved load distribution during bending of the prosthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.