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US 2019/0167347 A1Published application
Catheter adapted for direct tissue contact
AssigneeBiosense Webster (Israel) Ltd.
InventorsDebby Grunewald Highsmith, Meir Bar-Tal
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Abstract
An irrigated ablation catheter adapted for direct tissue contact has micro-elements that provide more accurate sensing of tissue, including thermal and electrical properties for temperature and impedance measurements. The micro-elements extend through a hollow chamber of an irrigated ablation electrode, and distal ends thereof can protrude outside of electrode or be flush with the electrode. The micro-elements have a protective guide tube in which components enabling temperature sensing or electrical sensing are encased.
Claims20
A catheter, comprising:
- an elongated body;
- a distal electrode assembly, including
- an electrode having a shell configured with an inner chamber, the shell having a wall defining a proximal portion and a distal portion, the wall of the distal portion having at least two apertures;
- one or more electrode micro-elements and one or more temperature sensing micro-elements extending through the inner chamber between the proximal portion and the distal portion, each of the one or more electrode micro-elements and the one or more temperature sensing micro-elements having a distal end fixedly received in a separate one of the at least two apertures of the wall of the distal portion, each of the one or more electrode micro-elements and the one or more temperature sensing micro-elements is configured to directly contact tissue;
- and
- a control handle.
3 more elements
Dependencies are inferred from the claim text.