METHOD AND APPARATUS FOR DIGITAL SIGNAL PROCESSING FOR RADIO FREQUENCY SURGERY MEASUREMENTS
First Claim
1. A method of measuring electromagnetic energy generated from an electromagnetic energy delivery system, the method comprising:
- contacting a skin surface of the patient with a skin contacting portion of the electromagnetic energy delivery system;
generating electromagnetic energy, wherein the electromagnetic energy is a radio-frequency signal;
transferring the electromagnetic energy from the electromagnetic energy delivery system to tissue beneath the skin surface of the patient through the skin contacting portion;
detecting a value of at least one characteristic of the electromagnetic energy, wherein the value is detected utilizing synchronous undersampling; and
calculating a value of current lost through the patient.
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Abstract
A method and apparatus for calculating current lost through a patient during a treatment of a patient using an electromagnetic energy delivery system is disclosed. The system generates electromagnetic energy, contacts a skin surface of the patient, transfers the electromagnetic energy to tissue beneath the surface of the skin, detects a value of at least one characteristic of the electromagnetic energy utilizing synchronous undersampling, and calculates the current lost through the patient. The characteristic measured may be a value of current of the electromagnet energy. An adjustable matching network may be utilized to maximize power to the tissue of the patient. Values of the impedance of the matching network may be utilized to determine the electromagnetic energy delivered to the tissue of the patient. A current correction factor is determined from the impedance of the matching network and utilized to calculate the current lost through the patient.
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Citations
19 Claims
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1. A method of measuring electromagnetic energy generated from an electromagnetic energy delivery system, the method comprising:
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contacting a skin surface of the patient with a skin contacting portion of the electromagnetic energy delivery system; generating electromagnetic energy, wherein the electromagnetic energy is a radio-frequency signal; transferring the electromagnetic energy from the electromagnetic energy delivery system to tissue beneath the skin surface of the patient through the skin contacting portion; detecting a value of at least one characteristic of the electromagnetic energy, wherein the value is detected utilizing synchronous undersampling; and calculating a value of current lost through the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for determining a value of current lost through a patient from an electromagnetic energy delivery system during a treatment of the patient, the apparatus comprising:
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an electromagnetic energy source operable to generate electromagnetic energy, wherein the electromagnetic energy is a radio-frequency signal; a coaxial cable electrically connected to the electromagnetic energy source; an electromagnetic energy delivery device having a skin contacting portion, wherein the electromagnetic energy delivery device is electrically connected to the coaxial cable and configured to contact a skin surface of the patient with the skin contacting portion, and wherein the skin contacting portion transfers the electromagnetic energy to a tissue beneath the skin surface of the patient during the treatment of the patient; and a control unit electrically connected to the electromagnetic energy source and in electrical communication with the coaxial cable, wherein the control unit is operable to detect a value of at least one characteristic of the electromagnetic energy utilizing synchronous undersampling of the radio-signal on the coaxial cable and to calculate the value of current lost through the patient. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification