Catheter and method for mapping Purkinje fibers
US7228164B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2004 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Dec 29, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/062
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved catheter is provided that is particularly useful for mapping the Purkinje fibers for potential diagnosis of ventricular fibrillation. The catheter comprises an elongated catheter body having proximal and distal ends and at least one lumen extending longitudinally therethrough. Mounted at the distal end of the catheter body is a mapping assembly having at least two spines, each having a proximal end attached at the distal end of the catheter body and a free distal end. Each spine comprises at least one electrode, preferably a tip electrode and at least one ring electrode. An irrigation tube extends through the catheter body and has an open distal end that is in communication with the outside of the distal end of the catheter body. The spines may be arranged in an expanded arrangement wherein each spine extends radially outwardly from the catheter body or in a collapsed arrangement wherein each spine is disposed generally along the longitudinal axis of the catheter body. In use, at least one electrode from each spine is positioned in contact with heart tissue to map the electrical activity of the heart. The location sensors are used to determine the location of each point…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.