Method of making an access graft and a vascular prosthesis
US5756035A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | May 24, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2240/001
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A vascular prosthesis is adapted for use as an access graft having a permanent set, kink-resistant U-bend section. A method for making the access graft includes the utilization of a tube of implantable material adapted to be attached in a blood circulatory system and to provide thereby a site for access for cannulation, the tube having a permanent set, kink-resistant U-shaped bent section and the method including the steps of forming a straight tube by a process which yields a set, dryable tube; taking a length of the tube and inserting in it along its length a flexible rod-like support member; wrapping the tube containing the support member around a core so as to define a bend in the tube, the bend being wet at this stage; drying the wet tube containing the support member while wrapped around the core to permanently shape the tube into a bent form; removing the dried tube from the core and removing the support member so as to form an access graft, U-shaped bent section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.