Surgery – Truss – Perineal
Patent
1976-02-11
1977-08-30
Trapp, Lawrence W.
Surgery
Truss
Perineal
A61H 100
Patent
active
040447596
ABSTRACT:
An improved surgical appliance for controlling flow of blood through blood vessels consists of a novel torniquet apparatus. Included in the torniquet apparatus is a wrapper member made up of a non-stretchable cloth or similar material, and means for firmly securing the wrapper around the leg of a patient. Contained within the wrapper are three inflatable chambers which can be supplied with a flow of compressed air to provide a means of selectively exerting pressure inside the wrapper and against blood vessels in the leg.
A lower chamber comprises a rubber tube which is initially inflated to exert localized pressure around the ankle of the patient. A second intermediate chamber is made up of layers of rubberlike material yieldably held together by a Velcro fastening material. The intermediate chamber communicates with the first chamber and the Velcro layers, in response to increasing pressures in the first chamber gradually become forced apart to allow pressure to be exerted progressively upwardly from the ankle region towards the thigh, thus forcing blood to flow out of the leg with the arteries and veins becoming collapsed. When a desired quantity of blood has been displaced along blood vessels in the upper thigh, the third chamber is activated. This chamber is separated from the lower and intermediate chambers and includes a separate rubber tubing which can be rapidly inflated to hold the veins and arteries of the upper thigh in a tightly clamped position so as to prevent a return flow of blood to the lower leg while desired operative procedures are being carried out.
REFERENCES:
patent: 2699165 (1955-01-01), Ferrier
patent: 2781041 (1957-02-01), Weinberg
patent: 3288132 (1966-11-01), Meredith
patent: 3752148 (1973-08-01), Schmalzbach
patent: 3933150 (1976-01-01), Kaplan et al.
Hamilton Munroe H.
Trapp Lawrence W.
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