Radiopaque polyurethanes and catheters formed therefrom
US4722344A · kind A · utility
98Cited by
21References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | May 23, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/3802
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Catheters formed from polyurethanes containing sufficient halogenated moieties in the polymer structure to make the polyurethanes radiopaque are disclosed. Such polyurethanes can be prepared by employing halogenated diols and/or halogenated diisocyanate reactants. In preferred cases, the catheters are optically transparent in addition to being radiopaque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.