Surgery – Truss – Pad
Patent
1979-06-13
1981-01-06
Trapp, Lawrence W.
Surgery
Truss
Pad
A61B 1712
Patent
active
042430399
ABSTRACT:
A tourniquet, destined to be used in an emergency, particularly on the battlefield, comprises a strap and a combined mechanism for tightening the strap and indicating the pressure exerted on the limb. The mechanism consists of a casing which contains a spool on which the free end of the strap is wound up by means of a pawl and ratchet mechanism. This casing is slidingly movable on a plate attached to the second end of the strap and urged in a direction opposed to the tightening force by two spiral springs positioned between the plate and the casing. Two tongues integral with the plate are made to protrude out of the casing by a length proportional to the compression of the springs and are marked to indicate the pressure exerted on the limb by the strap. These marks also give an indication of the maximum force allowable for an arm or a leg, taking into consideration the circumference of the respective limb.
REFERENCES:
patent: 1279784 (1918-09-01), Stopler et al.
patent: 2604098 (1952-07-01), Kranc
patent: 2714379 (1955-08-01), Raines
patent: 3095873 (1962-07-01), Edmunds
patent: 4175562 (1979-11-01), Honan
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