Atherectomy catheter having flexible nose cone
US5250059A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1992 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Jan 22, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M3/0279
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An atherectomy catheter comprises a flexible tube having a proximal end and a distal end, and a cutter housing secured to the proximal end. A spring tip nose cone is secured to a distal end of the cutter housing and comprises a relatively soft polymeric wall having a spring coil embedded therein. The spring tip nose cone has a controlled flexibility, generally being more flexible toward the distal tip. The spring coil inhibits collapse of the nose cone under the expected conditions of use, and the flexibility and non-collapsibility together assure that the nose cone can be introduced over a movable guide wire without substantial binding. Means may be provided for inhibiting loss of atheroma from the interior of the nose cone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.