Embolization protection system for vascular procedures
US8435225B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2004 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Nov 24, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/7068
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Apparatus and methods are described for effective removal of emboli or harmful fluids during therapeutic and diagnostic vascular procedures, such as angiography, balloon angioplasty, stent deployment, laser angioplasty, atherectomy, and intravascular ultrasonography. A catheter with an occluder mounted at its distal end creates an occlusion proximal to the lesion and provides a pathway for introducing a treatment catheter. Prior to, during or subsequent to the procedure, suction is activated to establish retrograde flow to remove emboli from the site. Additionally, a thin catheter with a distal fluid ejection nozzle may be introduced distal to the treatment site to rinse emboli from the treatment site. The suction flow and/or ejected fluid flow may be varied in a pulsatile manner to simulate regular blood flow and/or perturb settled emboli into being captured that may otherwise not be collected. The method establishes a protective environment before any devices enter the treatment site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.