System and method for electrosurgical tissue canalization
First Claim
1. A method for canalizing through tissue on a target site within a patient'"'"'s body comprising:
- providing a return electrode and an active electrode electrically coupled to a high frequency voltage source;
positioning the active electrode in close proximity to the a target site on the patient'"'"'s body;
providing a current flow path between the target site and the return electrode;
applying high frequency voltage between the active electrode and the return electrode to ablate the tissue; and
axially translating the active electrode towards the tissue to form a channel through the tissue.
3 Assignments
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Accused Products
Abstract
A method for transmyocardial revascularization of the heart of a patient comprises introducing a probe (10) into the thoracic cavity through a percutaneous penetration, a thoracotomy or a sternotomy. An active electrode surface (58) is then positioned adjacent a wall of the patient'"'"'s heart, e.g., the ventricular wall. Electrically conducting liquid (50) is directed to the heart wall to provide a current flow path and high frequency voltage is applied to ablate or disintegrate tissue at the heart wall. The probe is then axially translated towards the ventricular wall to form a revascularizing channel or artificial vessel from the ventricle to the myocardium to increase blood flow therethrough.
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Citations
32 Claims
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1. A method for canalizing through tissue on a target site within a patient'"'"'s body comprising:
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providing a return electrode and an active electrode electrically coupled to a high frequency voltage source; positioning the active electrode in close proximity to the a target site on the patient'"'"'s body; providing a current flow path between the target site and the return electrode; applying high frequency voltage between the active electrode and the return electrode to ablate the tissue; and axially translating the active electrode towards the tissue to form a channel through the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of transmyocardial revascularization of the heart of a patient comprising:
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providing a return electrode and an active electrode electrically coupled to a high frequency voltage source; positioning the active electrode in close proximity to the a target site on a wall of the patient'"'"'s heart; providing a current flow path between the target site and the return electrode; applying high frequency voltage between the active electrode surface and return electrode to ablate tissue at the heart wall; and axially translating the active electrode towards the heart wall to form a revascularizing channel through at least a portion of the heart. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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Specification