Anti-immunoresponsive polymeric material and its use in biological applications
US6071981A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 30, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Sep 30, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/42
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A polymer composition comprising an anticoagulant carried in a water soluble polymer hydrogen bonded to a cellulose polymer. The composition is useful as sutures, implantable material, temporary grafts, vasculature connections and the like. The composition can be prepared by a method comprising the steps of: forming a solution in an amine oxide of a water-soluble polymer capable of hydrogen bonding, a cellulose polymer, and an anticoagulant and reducing the amount of amine oxide in the solution to solidify a solid polymer composition comprising the anticoagulant in the water soluble polymer and the cellulose polymer. The polymer compositions are particularly useful in temporary implants, sutures, grafts or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.