Catheter having a variable length shaft segment and method of use
US6200305A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1998 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Sep 30, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1068
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a catheter device and guidewire system to enable the catheter to be exchanged over a conventional length guidewire without the use of a guidewire extension or exchange wire. The catheter device includes an elongated inflation shaft having a longitudinal inflation lumen, an extension shaft having a longitudinal extension lumen coupled in fluid communication with the inflation lumen, a balloon member disposed at the distal end of the extension shaft and in fluid communication with the inflation lumen, a guidewire shaft having a longitudinal guidewire lumen which extends from the distal end of the balloon member, through the balloon member and extension shaft, to the proximal end of the extension shaft, and a variable length shaft coupled to the proximal end of the extension shaft. The variable length shaft comprises an elastomeric material which may be rolled about its outside surface such that the shaft may selectively extend from a rolled up state having a length of about 1 centimeters to a fully unrolled state having a length of about 140 centimeters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.