Expandable microporous prosthesis
US5728150A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Nov 21, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N5/1002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a tubular prosthesis formed by rolling a perforated sheet around a longitudinal axis. Preferably, the prosthesis is self expandable under the radially outwardly directed spring bias of the rolled sheet. The perforations in the sheet are configured to provide throughholes in the wall of the multilayer prosthesis, when the prosthesis is in the implanted diameter within a vessel. The throughholes are configured to facilitate neointimal cell growth, and in a preferred embodiment, to minimize roll bias in the prosthesis as it is expanded from its reduced, insertion diameter to its expanded, implanted diameter. The prosthesis may be used as a graft or a stent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.