Magnetically navigable and/or controllable device for removing material from body lumens and cavities
US6428551B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1999 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Mar 30, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0127
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A magnetically navigable atherectomy device includes a cutting head, a flexible drive shaft having a proximal and a distal end, with the cutting device on the distal end, and a magnet associated with the cutting head, the magnet of sufficient size to allow the cutting head to be oriented by an externally applied magnetic field. The magnet may be a portion of the cutting head made from a magnetically permeable or permanent magnetic material, a portion of the drive shaft made from a magnetically permeable or permanent magnetic material; a separate magnet between the cutting head and the drive shaft, a portion a magnet on a sheath covering the drive shaft. Alternatively a guide wire can provided with a magnetic material on its distal end. Through the application of a magnetic field and/or a magnetic gradient, the artherectomy device can be guided to the location of the atheromatous material in the body. Once at the site of atheromatous material, through the application of a magnetic field or magnetic gradient, the device can be manipulated into proximity to the atheromatous material to remove the material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.