RF ablation catheter tip electrode with multiple thermal sensors
US6616657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Sep 16, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/00821
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tip electrode for an ablation catheter mounted at the distal tip of an elongated catheter body member has a distal-end region and a proximal-end region. A tip thermal sensor is located at or near the apex of the distal-end region and one or more side thermal sensors are located near the surface of the proximal-end region. The electrode is preferably an assembly formed from a hollow dome-shaped shell with a core disposed within the shell. The side thermal sensor wires are electrically connected inside the shell and the core has a longitudinal channel for the side thermal sensor wires welded to the shell. The shell also preferably has a pocket in the apex of the shell, and the end thermal sensor wires pass through the core to the apex of the shell. Spaces between the shell and the core can be filled with epoxy resin. Alternatively, the electrode is formed of a solid metal having a plurality of bores for positioning thermal sensors at the tip and near the surface of the electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.