Peri-vascular tissue ablation catheter with support structures
US8740849B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2013 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Jan 28, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0087
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand with open ends around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system also includes means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The preferred embodiment of the catheter includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.