Telemetering system for operating room and the like

Details Telemetering system for operating room and the like Telemetering system for operating room and the like

1980-03-24

1982-10-26

Groody, James J.

Communications: electrical

Continuously variable indicating

With particular transmitter

128903, 324 62, 324 65R, 34087017, 34087021, G08C 1904, G08C 1916

Patent

active

043564860

ABSTRACT:
A system for telemetering data from a patient to a monitor permitting direct connection of patient's sensors and transducers to the monitor and permitting telemetering by radio or wire without requiring changes in transducer or monitor design or adjustment or calibration. A telemetering system which presents to the monitor a variable resistance identical to the varying resistance produced by a transducer at the patient. A temperature transmission channel wherein a thermistor resistance is connected in a bridge circuit which is balanced by successive trials of a set of resistors digitally selected by a counter and comparator. The code for the selected value which produces balance is transmitted to the monitor station where it is used to actuate an identical set of resistors to reproduce the input resistance value.

REFERENCES:
patent: 2098227 (1937-11-01), Chauveau
patent: 2630007 (1953-03-01), Howe et al.
patent: 3582921 (1971-06-01), Krieger
patent: 3922490 (1975-11-01), Pettis
patent: 3961317 (1976-06-01), De Brem et al.
patent: 4025736 (1977-05-01), Chlupsa

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