System and method of use for treating occluded vessels and diseased tissue
US6830577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2002 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Oct 31, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/05
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method for treating diseased target tissue of a living being. The system comprises a working head, e.g., a rotary impacting impeller, a stent delivery catheter, a flush catheter, or liquid jets, a debris extraction sub-system, and may have barrier means in certain embodiments. The working head is arranged to treat diseased tissue, e.g., at least partially occluded with atherosclerotic plaque, or surrounding tissue being compromised by a disease such as cancer, in vessels or lumens, whereupon some debris may be produced. The debris extraction sub-system introduces an infusate liquid at a first flow rate adjacent the working head and withdraws that liquid and some blood at a second and higher flow rate, to create a differential flow adjacent the working head. The introduction of the infusate liquid may also be used to deliver drugs and other therapies systemically or locally, between the working head and the distal protection barrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.