Polymer fabric compacting process
US3986828A · kind A · utility
64Cited by
1References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1974 |
| Grant date | Oct 19, 1976 |
| Priority date | — |
| Expiry date | Mar 5, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/065
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Polyester fabric which may be in the form of a warp-knitted lock-stitched or tricot-stitched tubular construction is compacted by treatment with NO.sub.2 either in the gaseous phase or in solution. The product, after neutralization, washing and crimping is suitable for vascular prostheses. In one form, the compacted product is crimped and bifurcated. Shrinkage in both the longitudinal and transverse directions is at least 30%. The porosity of the fabric is reduced by the compacting treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.