Catheter for detaching abnormal deposits from blood vessels in humans
US5876414A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1997 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Sep 29, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/22038
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The catheter connected to a rotary drive mechanism has, at its front end, a cutting tool which consists of a stator and rotor. Cutting edges arranged on the circumference of the rotor and stator interact in a shearing action. The detached deposits are conveyed through a tubular sheath and into a collection container via a discharge chamber. A drive shaft which is arranged inside the tubular sheath, and which connects the rotary drive mechanism to the rotor, is designed as a conveyor screw and is used for the conveying. A rotary catheter of this kind is used for carefully removing and withdrawing blood clots and stenoses from narrowed blood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.