Catheter system and method for boring through blocked vascular passages
US9918734B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2013 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Jul 26, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/22094
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A rotating cutting head catheter for passage through chronic total occlusions or other refractory atherosclerotic plaque from diseased arteries is disclosed. The catheter's rotating cutting head is designed to reside safely within an outer protective sheath when not in use. The outer protective sheath contains one or more helical grooves or slots, and the cutting head contains protruding blades or projections that fit into these helical grooves or slots. Application of torque to an inner catheter or wire attached to the cutting head applies spin to the cutting head, and the force of the sheath's helical grooves or slots against the cutting head's protruding blades or projections advances the cutting head outward from the protective sheath. Once extended, the cutting head may now rotate freely. The device may use a guidewire to direct the cutting head to the desired position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.