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US 4,044,759 AGranted
Auto-transfusion torniquet appliance and method of utilizing the same to control flow of blood through a blood vessel
OwnerBahman Ghayouraninventor
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OwnerBahman Ghayouraninventor
Estimating the term…
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.
An improved tourniquet apparatus for controlling flow of blood in a patient's body, said apparatus including a flexible, substantially non-stretchable wrapper member engageable around a limb of the patient's body and inflatable means for selectively exerting pressure along the limb to displace blood therefrom, said inflatable means consisting in a bladder supported inside the wrapper member and having intermediate portions yieldably secured together by Velcro surfaces.
An improved tourniquet apparatus for controlling flow of blood in a patient's body, said apparatus including a flexible, substantially non-stretchable wrapper member engageable around a limb of the patient's body, inflatable means for selectively exerting pressure along the limb to displace blood therefrom, said inflatable means consisting in a bladder supported inside the wrapper member and being formed with a plurality of chamber sections, and one of the chamber sections having inner portions yieldably secured together by Velcro surfaces.
Method of controlling flow of blood in the body of a patient, said method including the steps of exerting a localized pressure on a limb of the patient's body to induce displacement of blood out of veins and arteries, thereafter applying pressure upwardly along the limb to gradually displace blood out of the limb into the trunk of the patient's body, said pressure being applied progressively along the said limb by yieldably containing inflatable layers together with engaged Velcro surfaces and gradually forcing the engaged Velcro surfaces into separated relationship to one another.
An improved tourniquet apparatus for controlling flow of blood in a patient's body, said apparatus including a flexible, substantially non-stretchable wrapper member engageable around a limb of the patient's body and inflatable means for selectively exerting pressure along the limb to displace blood therefrom, said inflatable means including a bladder component supported inside the wrapper member and being formed with successive inflatable chambers, one of said inflatable chambers being located in the wrapper in a position to exert pressure around the ankle portion of the said patient's limb a second inflatable chamber having portions yieldably secured together by Velcro surfaces, said portions being separable in response to increase in pressure in the said first chamber to progressively exert pressure along intermediate portions of the patient's limb and to force a flow of blood upwardly along the knee portion of the patient's limb, and a third inflatable chamber located in the wrapper in a position to exert pressure independently of the first and second chambers around the thigh portion of the patient's limb to prevent a return flow of blood along the patient's limb.
Dependencies are inferred from the claim text.