Clamping ablation tool and method

• US 8,172,837 B2
• Filed: 06/14/2010
• Issued: 05/08/2012
• Est. Priority Date: 06/02/2004
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Rothstein, Paul T., Francischelli, David E., Cormack, Terri Jean, Daigle, Tom P., Lutterman, Alison, Briscoe, Roderick E., Christian, Steven C.
• Primary Examiner(s): COHEN, LEE S
• Application Number:
  US12/814,992
• Publication Number:
  US 20110071519A1
• Time in Patent Office: 694 Days
• Field of Search: 606/41, 606/50
• US Class Current: 606/41
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 2017/2945 Curved jaws
• CPC Class Codes: A61B 2018/00065 porous
• CPC Class Codes: A61B 2018/00363 Epicardium
• CPC Class Codes: A61B 2018/00375 Ostium, e.g. ostium of pulmonary vein or artery
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/1432 curved

Abstract

Method and apparatus for ablating target tissue adjacent pulmonary veins of a patient. A clamping ablation tool can include an upper arm having an upper neck, a link assembly, and an upper actuator. The link assembly can include a distal electrode and a proximal electrode. The clamping ablation tool can include a lower arm that mates with the upper arm. The lower arm can include a lower neck, a distal jaw, and a lower actuator. The distal jaw can include a jaw electrode, and the lower actuator can control movement of the distal jaw.

Claims

1. A clamping ablation tool for ablating target tissue adjacent pulmonary veins of a patient, the clamping ablation tool comprising:

a first arm including a first neck portion, a first link movably coupled to the first neck portion, and a first actuator, the first link including a first electrode, the first arm capable of being guided around the pulmonary veins, the first actuator controlling movement of the first link; and

a second arm that is operatively connectable with the first arm, the second arm including a second neck portion, a second link movably coupled to the second neck portion, and a second actuator, the second link including a second electrode, the second arm capable of being guided around the pulmonary veins, the second actuator controlling movement of the second link;

the first actuator and the second actuator being independently operable in order to move and position the first link independently of the second link while the first and second arms are operatively connected so as to be substantially non-movable with respect to one another;

the first electrode and the second electrode adapted to receive energy independently of one another in order selectively create proximal and distal lesion. portions on the target tissue adjacent to the pulmonary veins.

2. The clamping ablation tool of claim 1, wherein at least one of the first and second actuators includes a thumb slide, a rotary control, a trigger, a torque screw or a lever.

3. The clamping ablation tool of claim 1, wherein at least one of the first and second links is coupled to at least one of a cable, a wire, or a rod.

4. The clamping ablation tool of claim 1, further comprising a stiffener coupled to at least one of the first arm and the second arm.

5. The clamping ablation tool of claim 1, wherein the first arm further includes a third link movably coupled to the first neck portion opposite the first link.

6. The clamping ablation tool of claim 5, wherein the third link includes a third electrode.