Method for tubal electroligation
First Claim
1. A method for ligating a fallopian tube, comprising the steps of:
- (a) providing an electrically energizable electrode having a power supply;
(b) advancing the electrode into the fallopian tube such that the electrode is juxtaposed with the wall of the fallopian tube;
(c) establishing contact between the wall of the fallopian tube and the electrode;
(d) energizing the electrode until the fallopian tube collapses around the electrode to thereby block the fallopian tube;
(e) measuring at least one parameter selected from the group of preselected parameters consisting of;
power supply output voltage, time rate of change of power supply output voltage, power supply output power, time rate of change of power supply output power, power supply output current, time rate of change of power supply output current, power supply output electrical impedance, time rate of change of power supply output electrical impedance, phase difference between power supply voltage and current, electrode temperature;
(f) establishing a setpoint having a variable predetermined value, the predetermined value being a function of at least one of said preselected parameters; and
(g) decreasing energization of the electrode when the parameter reaches the setpoint.
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Accused Products
Abstract
A minimally-invasive surgery apparatus for causing the lumen of a vein to collapse to prevent blood flow through the vein, e.g., a varicose vein or a side branch of the saphenous vein, includes an electrode which is electrically connected to a power source, and the electrode is percutaneously advanced into the vein. Then, the power source is activated to energize the electrode and thus the blood vein until the blood vein sufficiently collapses to block the lumen of the vein. A feedback loop is also provided for sensing electrical impedance of the tissue within the vein being energized and for deenergizing the electrode when the impedance reaches a predetermined value. The apparatus can also be used to block a fallopian tube.
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Citations
2 Claims
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1. A method for ligating a fallopian tube, comprising the steps of:
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(a) providing an electrically energizable electrode having a power supply; (b) advancing the electrode into the fallopian tube such that the electrode is juxtaposed with the wall of the fallopian tube; (c) establishing contact between the wall of the fallopian tube and the electrode; (d) energizing the electrode until the fallopian tube collapses around the electrode to thereby block the fallopian tube; (e) measuring at least one parameter selected from the group of preselected parameters consisting of;
power supply output voltage, time rate of change of power supply output voltage, power supply output power, time rate of change of power supply output power, power supply output current, time rate of change of power supply output current, power supply output electrical impedance, time rate of change of power supply output electrical impedance, phase difference between power supply voltage and current, electrode temperature;(f) establishing a setpoint having a variable predetermined value, the predetermined value being a function of at least one of said preselected parameters; and (g) decreasing energization of the electrode when the parameter reaches the setpoint. - View Dependent Claims (2)
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Specification