Method of preparing a vascular graft prosthesis
US4647416A · kind A · utility
238Cited by
18References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1985 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Apr 26, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A ribbed, porous tube suitable for use as a vascular graft prosthesis is prepared by scoring a stretched or unstretched tube of PTFE, stretching the tube at 200.degree.-320.degree. C. to develop the desired porosity, and heat setting the scored, stretched tube at 327.degree.-450.degree. C. while restraining the tube from axial shrinkage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.