Blood transfusion tubes and devices for use in contact with human blood
US4465480A · kind A · utility
8Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1981 |
| Grant date | Aug 14, 1984 |
| Priority date | — |
| Expiry date | Dec 21, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L33/068
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Devices such as blood transfusion tubes, which can be contacted with human blood at reduced risk of blood clotting, made of a segmented polyether polyurethane urea obtained by chain extending an isocyanate-terminated prepolymer with a diamine having a branch at at least one .alpha.-carbon atom, such as 1,2-propylene diamine or 1,4-cyclohexylene diamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.