Reinforced multilumen catheter for axially varying stiffness
US5470322A · kind A · utility
71Cited by
30References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1994 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Apr 15, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0037
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Multilumen catheters are provided with an axially decreasing stiffness by the incorporation of a hollow tube formed of a relatively stiff material into the catheter construction. The tube may either encircle the catheter as an external shell or reside inside one of the lumens as a liner. The stiffness variation may be attained by extending the hollow tube only part of the distance from the proximal to the distal ends of the catheter or by varying the construction of the hollow tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.