Cryogenic ablation system
AssigneeSt. Jude Medical, Cardiology Division, Inc.
InventorsTroy T. Tegg, Salo Arias, Derek C. Sutermeister
Life of this patent
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Abstract
The instant disclosure relates to electrophysiology catheter for tissue ablation. In particular, the instant disclosure relates to a system controller for facilitating an ablation therapy at a cryogenic ablation balloon. In an embodiment, an ablation an ablation catheter system comprising a catheter shaft including proximal and distal ends, a catheter handle coupled to a proximal end of the catheter shaft, a cryogenic ablation ballon coupled to the distal end of the catheter shaft, the ablation ballon configured and arranged to deliver a cryogenic ablation therapy to target tissue, an ablation system controller coupled to the catheter handle.
Claims24
An ablation catheter system comprising:
- a catheter shaft including proximal and distal ends;
- a catheter handle coupled to a proximal end of the catheter shaft;
- a cryogenic ablation balloon coupled to the distal end of the catheter shaft, the ablation balloon configured and arranged to deliver a cryogenic ablation therapy to target tissue;
- and
- an ablation system controller coupled to the catheter handle, the system controller including:
- a cryogenic fluid source;
- a tank manifold positioned in line and in fluid communication with the cryogenic fluid source, and configured to control a flow of the cryogenic fluid to the cryogenic ablation balloon;
- a catheter delivery manifold positioned in line with and in fluid communication with the cryogenic ablation balloon, and configured to control the flow of the cryogenic fluid to the cryogenic ablation balloon;
- a servo valve located between the tank manifold and the catheter delivery manifold, and configured and arranged to regulate a pressure of the cryogenic fluid received by the ablation balloon;
- and
- controller circuitry configured and arranged to control the ablation therapy of the target tissue via actuation of the tank manifold, the catheter delivery manifold, and the servo valve.
An ablation catheter system controller comprising:
- a cryogenic fluid source;
- a servo valve fluidly coupled to the cryogenic fluid source and configured and arranged to regulate a pressure of the cryogenic fluid received by an ablation balloon;
- a tank manifold positioned in line with a flow of the cryogenic fluid between the cryogenic fluid source and the servo valve;
- a catheter delivery manifold positioned in line with the flow of cryogenic fluid between the servo valve and the ablation balloon;
- the catheter and tank manifolds configured and arranged to control a flow of the cryogenic fluid to the ablation balloon;
- and
- controller circuitry configured and arranged to control the tank manifold, the catheter delivery manifold, and the servo valve to affect an ablation therapy on target tissue.
A system for controlling an ablation balloon catheter comprising:
- a cryogenic fluid source,
- a manifold in fluid communication with the cryogenic fluid source and configured and arranged to control a flow of cryogenic fluid to the ablation balloon,
- a servo valve located between the manifold and the cryogenic fluid source, and configured and arranged to regulate a pressure of the cryogenic fluid received by the ablation balloon,
- controller circuitry configured and arranged to control an ablation therapy of target tissue by the ablation balloon catheter via actuation of the manifold and the servo valve;
- and
- wherein the manifold includes
- a normally open valve in fluid communication with the flow of cryogenic fluid to the ablation balloon and communicatively coupled to the controller circuitry, and
- an exhaust lumen in fluid communication between an output of the normally open valve and an atmosphere.
Dependencies are inferred from the claim text.