Expandable catheter system for fluid injection into and deep to the wall of a blood vessel
US9056185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2012 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Jan 3, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter-based/intravascular fluid injection system with application to renal denervation includes a multiplicity of needles which expand open around a central axis to engage the wall of a blood vessel, or the wall of the left atrium, allowing the injection of a cytotoxic and/or neurotoxic solution for ablating conducting tissue, or nerve fibers around the ostium of the pulmonary vein, or circumferentially in or just beyond the outer layer of the renal artery. The expandable delivery system includes expandable components that facilitate positioning of a multiplicity of injection needles against the inside wall of a blood vessel from where they can be advanced. The system also includes means to limit and/or adjust the depth of penetration of the ablative fluid into the tissue of the wall of the targeted blood vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.