Tourniquet for sensing and regulation of applied pressure

Details Tourniquet for sensing and regulation of applied pressure Tourniquet for sensing and regulation of applied pressure

1991-09-13

1993-01-26

Hindenburg, Max

Surgery

Truss

Pad

128774, 606203, A61B 500

Patent

active

051815222

ABSTRACT:
A tourniquet system comprising: an inflatable occlusive band for encircling a limb of a subject and for inflating to apply pressure to the encircled limb to occlude blood flow into the limb distal to the band, wherein an inner surface of the band faces the limb; inflation pressure regulation means responsive to a variable inflation pressure regulation signal for regulating the pressure to which the occlusive band is inflated and for producing an inflation pressure signal representative of the pressure to which the band is inflated; applied pressure sensing means located at a predetermined location fixed relative to the band for producing an applied pressure signal representative of the pressure applied by the inflated band to the limb in a direction normal to inner surface of the band at the predetermined location; and pressure-regulating means responsive to the applied pressure signal for producing an inflation pressure regulation signal to maintain the pressure applied by the inflated band to the limb at the predetermined location near a predetermined reference pressure. The tourniquet system may include pressure comparison means for comparing the difference between the pressures represented by the inflation pressure signal and the applied pressure signal and for and generating an alarm signal if the difference exceeds a preassigned limit.

REFERENCES:
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patent: 4770175 (1988-09-01), McEwen
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