Catheter with improved safety line for distal tip and related method
AssigneeBiosense Webster (Israel) Ltd.
InventorsJeffrey L. Clark, Maria Duarte, Erica Lovejoy
Life of this patent
Estimating the term…
Abstract
A catheter includes a tip electrode with a shell and a support member to provide a plenum chamber. The support member is formed with a U-shaped passage for a safety line to wrap around and secure the support member (with the shell affixed thereto) to the catheter. Additional passages are formed in the support member to accommodate components such as irrigation tubing, lead wires and a thermocouple wire pair. A method of manufacture provides distal installation and/or anchoring of the safety line, lead wire and thermocouple wire pair in the support member prior to sealing the support member and mounting the shell.
Claims21
A catheter, comprising:
- an elongated catheter body;
- a tip electrode distal to the catheter body, the tip electrode comprising:
- a support member having a passage portion defining a rounded distal surface;
- and
- an electrically conductive shell having a proximal opening, the support member comprising a plug portion situated in the proximal opening of the shell, a hollow proximal portion proximal the plug portion and extending into the catheter body, and a distal portion distal the plug portion and extending into the proximal opening of the shell;
- and
- a safety tensile member having a tensile portion positioned in the passage portion to pass around the rounded distal surface.
A catheter, comprising:
- a tubing having a proximal end and a distal end;
- a tip electrode distal to the tubing and comprising:
- an electrically conductive shell having a cavity, a dome distal end and an opening at its proximal end;
- and
- a support member having a plug portion situated in the opening of the shell, a hollow proximal portion received in the distal end of the tubing, and a distal portion extending into the cavity of the shell, the support member having a U-shaped passage defining a rounded distal surface, the plug portion of the support member comprising an annular flange configured to abut the proximal end of the shell to limit extension of the plug portion and the distal portion into the cavity of the shell;
- and
- a safety tensile member having a tensile portion extending through the U-shaped passage to pass around the rounded distal surface.
Dependencies are inferred from the claim text.