METHOD OF INSPECTING UNCONSCIOUS PATIENT FOR PRESENCE OR ABSENCE OF PULSES BASED ON MEASUREMENT OF IMPEDANCE AMONG ELECTRODES CONNECTED TO IMPEDANCE MEASURING SYSTEM OF DEFIBRILLATION EQUIPMENT AND ATTACHED ON PATIENT'S SKIN, AND APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide an apparatus for measurement of vascular flow in tissues used during emergency care for resurgence after acute cardiac death. SOLUTION: This apparatus is arranged outside skin, and is provided with an electrode support having a first electrode pair supplied with almost constant electric current from an AC source. The voltage between the first pair of electrodes is measured using a voltage measurement apparatus 7. If necessary a second voltage between a second pair of electrodes supported either by an electrode-supporting member arranged on the skin near the pair of first electrode, or by the supporting member common with the pair of first electrode, is measured. To the measurement apparatus is connected a signal processing means that eliminates signals including respiration signals, pulse signals, (or vascular flow signals), and chest compressing signals. This particular AC source can transmit signals of the frequency of approximately. 1 kHz to 10 MHz, preferably 30 kHz.