Quantitative blood flow restriction device

Abstract

The invention provides a quantitative limiting device of blood flow. The quantitative limiting device of the blood flow comprises a blood flow detecting and limiting device, and a control system, wherein the blood flow detecting and limiting device is an ultrasonic doppler probe; the ultrasonic doppler probe comprises a probe support, a V-shaped arm and a metal reflecting plate; the V-shaped arm is connected with the probe support through a first connecting rod; two ultrasonic transmitting and receiving surfaces are symmetrically arranged at the inner side of a V-shaped opening of the V-shaped arm; the metal reflecting plate is vertical to a symmetrical shaft of the ultrasonic transmitting and receiving surfaces, and is arranged at one side of the V-shaped opening of the V-shaped arm; a second connecting rod fixed on the metal reflecting plate is connected with the probe support; and the axial length of the metal reflecting plate on the blood vessel is close to the axial length of the V-shaped arm on the blood vessel. By adopting the quantitative limiting device of the blood flow, the blood flow of a visceral organ can be quantitatively and accurately limited, and the minimal effect on the function of the visceral organ is achieved when the minimal bleeding volume in a surgical operation is ensured.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a device for quantitatively restricting the blood flow of the vascular system. Background technique [0002] In modern liver surgery, restricting blood flow into and out of the liver and reducing intraoperative bleeding have become the basis of hepatectomy. However, in the literature at home and abroad, in the method of hepatic blood flow restriction, which is one of the most important techniques in liver resection, whether it is the most classic and widely used hepatic pedicle blood flow occlusion method or the whole liver blood flow occlusion method , hemihepatic blood flow occlusion method, hemihepatic blood flow occlusion method with preserved arterial blood supply, hepatic blood flow occlusion method with hepatic artery intermittently blocked portal vein, hepatic blood flow occlusion method through Glisson sheath system in different regions Methods such as cutting method a...

AI Technical Summary

Problems solved by technology

When completely occluded, there is less hemorrhage during liver surgery, but liver function is affected; when fully open, the blood supply to the liver is rich, the amount of bleeding is large, and there are many intraoperative and postoperative complications; The closing time is short, which affects the operation process, and on the other hand, causes "ischemia-reperfusion" injury to the liver

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