SKIN IMPEDANCE MATCHING SYSTEM AND METHOD FOR SKIN/ELECTRODE INTERFACE
First Claim
1. A system for matching skin impedance of a patient, comprising:
- a first module adapted to determine the skin impedance;
a resistor network adapted to match the skin impedance using one or more resistors;
a processor adapted to configure the resistor network based at least in part on input received from the first module; and
a second module adapted to sense signals through electrodes coupled to the skin in conjunction with the resistor network.
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Abstract
The present invention relates to a system for measuring the input impedance of a skin/electrode interface and selectively modifying the input impedance of the monitoring circuit to match the measured input impedance. More particularly, a simplified method for correcting for input impedance mismatch between electronic monitoring circuitry and the skin/electrode interface. In accordance with one embodiment of the invention, an input impedance measuring circuit will interface with a microprocessor and a reconfigurable switch network to select the input impedance of the electronic monitoring circuitry, thus eliminating the impedance sensitivity of EMG or EKG instruments.
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Citations
12 Claims
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1. A system for matching skin impedance of a patient, comprising:
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a first module adapted to determine the skin impedance; a resistor network adapted to match the skin impedance using one or more resistors; a processor adapted to configure the resistor network based at least in part on input received from the first module; and a second module adapted to sense signals through electrodes coupled to the skin in conjunction with the resistor network. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for matching skin impedance of a patient, comprising:
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switching to a matching mode; determining the skin impedance using a test voltage; switching a resistor network to match the skin impedance; switching to a sensing mode; measuring voltage inputs from the skin; and calibrating the inputs using the resistor network. - View Dependent Claims (9, 10, 11, 12)
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Specification