Polyurethane/urea compositions
US10266657B2 · kind B2 · utility
4Cited by
4References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2016 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | May 10, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A valve in the form of a medical device, article, or implant that is composed wholly or partly of a biomaterial, the biomaterial comprising a polyurethane or polyurethane urea elastomeric composition having a plurality of soft segments and hard segments, such that the plurality of soft segments are each derived from at least one block copolymer segment of Formula 1 and optionally an additional polyol or polyamine. The valve may include a plurality of valve leaflets and a support structure with one or more of the valve leaflets being composed wholly or partly of the biomaterial.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.