Flexible tubular member for catheter construction
US4960410A · kind A · utility
298Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1989 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Mar 31, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0054
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter having a two-part tubular member that defines a passageway which extends completely through the catheter. One part of the tubular member is a relatively stiff tube having a reduced wall thickness at its distal end that is spirally cut to increase its flexibility. A more flexible sheath covers the reduced thickness, distal portion of the relatively stiff tube to insure that the tubular member can hold pressure. A preferred flexible sheath or tube is constructed using a biaxially oriented polymer such as nylon or polyethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.