Extrudable polyurethane for prosthetic devices prepared from a diisocyanate, a polytetramethylene ether polyol, and 1,4-butane diol
US4523005A · kind A · utility
154Cited by
2References
4Claims
0Family size
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Key dates
| Filing date | Apr 17, 1984 |
| Grant date | Jun 11, 1985 |
| Priority date | — |
| Expiry date | Apr 17, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/75
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Reaction product of an aliphatic organic diisocyanate, a high molecular weight polyether polyol (poly tetra methylene ether glycol) and 1,4 butane diol. The resulting polymers have thromboresistant properties, a long flexural life and are extrudable. The polyurethane polymer is ideal for forming transvenous cardiac pacemaker leads, blood bags, intravenous and intra-arterial catheters and tubing, and other shaped devices which must be formed of a blood compatible material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.