Logic-controlled occlusive cuff system

Details Logic-controlled occlusive cuff system Logic-controlled occlusive cuff system

1976-06-01

1981-10-13

Thaler, Michael H.

Surgery

Truss

Pad

128327, 128686, A61B 502

Patent

active

042942616

ABSTRACT:
The occlusive cuff system of this invention comprises a pressure cuff and a source of regulated compressed gas feeding the cuff through an electrically-operated fill valve. An electrically-operated vent valve vents the cuff to the ambient pressure. The fill valve is normally closed and the vent valve is normally open. In response to an external start signal, a logic network opens the fill valve and closes the vent valve, thereby starting the pressurization cycle and a timer. A pressure transducer continuously monitors the pressure in the cuff. When the transducer's output equals a selected reference voltage, a comparator causes the logic network to close the fill valve. The timer, after a selected time delay, opens the vent valve to the ambient pressure, thereby ending the pressurization cycle.

REFERENCES:
patent: 3825008 (1974-07-01), Shook
patent: 3905354 (1975-09-01), Cichowsky
patent: 4027662 (1977-06-01), Lee
Schulze et al., Southwestern Inst. of Electrical and Electronics Engr. Conf. Record, (4-1968), pp. 17F1-17F5.

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