Indwelling catheter with improved kinking resistance
US5993436A · kind A · utility
22Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Nov 3, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L29/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An indwelling catheter is made of a polyurethane resin having a Shore hardness of 60D or more. The soft segment of the polyurethane resin is constituted by polycaprolactone. The indwelling catheter has a kinking resistance of 10 mm or more when measured at 37.degree. C. in wet state. The Young's modulus is at first 20 kgf/mm.sup.2 or more when measure at 25.degree. C. in dry state, and reduces to 15 kgf/mm.sup.2 or less by soaking it in water of 37.degree. C. for 5 minutes or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.