ECG electrode impedance checking system as for emergency medical

Details ECG electrode impedance checking system as for emergency medical ECG electrode impedance checking system as for emergency medical

1977-09-12

1979-02-27

Kamm, William E.

Surgery

Truss

Perineal

324 57R, A61B 504

Patent

active

041413512

ABSTRACT:
A circuit for checking a plurality of impedances having a common connection point as for use in an emergency medical ratio, where the impedance of each ECG electrode contact is automatically and sequentially checked during the initial calibration transmission, using the AC non-polarizing signal which is also used as the ECG subcarrier for the medical data telemetry. The ECG telemetry calibration signal is also processed to provide a sequential switching control. Poor electrode contacts are indicated visually to the paramedic in charge and thus can be corrected before ECG telemetry begins.

REFERENCES:
patent: 3426150 (1969-02-01), Tygart
patent: 3495584 (1970-02-01), Schwalm
patent: 3559193 (1971-01-01), Savaglio et al.
patent: 3757778 (1973-09-01), Graham
patent: 3859988 (1975-01-01), Lencioni, Jr.
patent: 3882277 (1975-05-01), De Pedro et al.
patent: 3971366 (1976-07-01), Motoyama
patent: 4027663 (1977-06-01), Fischler et al.

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