Water-filling pressure device for saphenous vein bypass graft (SVBG) leakage detection

Abstract

The invention discloses a water-filling pressure device for saphenous vein bypass graft (SVBG) leakage detection, belonging to the technical field of medical equipment. The water-filling pressure device mainly comprises a needle tubing, connecting pipes, a pressure gauge, a tee joint, a valve switch and a needle head, and is characterized in that the needle tubing, the pressure gauge, the needle head and the tee joint are fixedly connected by the connecting pipes; the valve switch is arranged on the tee joint; the rear of the needle head is in an olive shape; a groove is formed at the front end of the needle head. After the water-filling pressure device for SVBG leakage detection is used, the pressure is visually displayed in the water-filling process of vein detection, and the numerical value change of push injection pressure can be observed, so that the waste caused by human error of SVBG can be avoided, and the application success rate of the SVBG is greatly improved; the water-filling pressure device is time-saving and labor-saving, is capable of reducing cost and saving raw materials, and has the advantages of being simple in structure, convenient to use, and the like.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a water-filled pressure device for detecting leakage of vein graft vessels. Background technique [0002] At present, coronary artery bypass grafting is more common in cardiac surgery, and it is a common method for surgical treatment of coronary heart disease. Vascular materials commonly used in coronary artery bypass grafting include internal thoracic artery, great saphenous vein, radial artery, right gastroepiploic artery and other blood vessels, among which the great saphenous vein is the most widely used vascular material. The great saphenous vein runs on the inner side of the calf, is superficial and easy to obtain, and is long enough for surgical application. However, the vein grafts used in coronary artery bypass grafting have a high restenosis rate, which seriously affects its long-term efficacy. One year after coronary artery bypass grafting, the occlusion rate ...

AI Technical Summary

Problems solved by technology

The main problem is: in the process of freeing the great saphenous vein during the operation, because it takes a short time to separate, during the operation to free the veins, the branch vessels of the vein must be cut and ligated, and heparin saline needs to be injected into the vein lumen during the operation. In order to judge whether there is leakage in the venous collateral vessels or vessel walls, the vessel walls or collaterals with leakage need to be ligated or sutured to ensure that the vascular graft will not leak blood after being used for bypass

However, when judging leakage by filling the venous vessel cavity with water, it is often difficult to grasp the strength of water pumping, and the strength of different surgeons varies greatly, sometimes causing damage to the intima of the venous vessel, which cannot be used for surgery and has to be re-injected. Obtaining venous blood vessels not only wastes a lot of manpower, material and financial resources, but also increases the cost of surgery

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