Vena cava shunt and portacaval transfer anticoagulation catheter and preparation method thereof

Abstract

The invention discloses a vena cava shunt and portacaval transfer anticoagulation catheter and a preparation method thereof. The catheter consists of a hooked bent tube type vena cava transfer catheter with a side hole and a portacaval shunt catheter; and intra-cavity transfer and non-invasive temporary portacaval shunt for receptor postcava can be finished at the same time through the hooked bent tube type vena cava transfer catheter with the side hole and the portacaval shunt catheter. Due to the adoption of polyethyleneimine-heparin combination technology, the preparation method for the catheter avoids stasis blood of the middle lower part and injury of internal organs at a liver-free stage during liver transplantation, realizes no haemorrhage during the liver transplantation, reduces the tube wall tension of the receptor postcava, ensures a broader operative field, is more convenient and safer, achieves simplification of the liver transplantation technology, has ideal anticoagulation effect, and avoids the defects of blood seepage during operation and poor blood compatibility.

Description

technical field [0001] The invention relates to a medical catheter and a preparation method thereof, in particular to an anticoagulation catheter for vena cava shunt and portacaval bypass and a preparation method thereof. Background technique [0002] Liver transplantation in the anhepatic period without the use of vena cava and portocaval shunt devices will bring a series of complications. Due to the blockage of the recipient's inferior vena cava, the amount of returning blood will drop by more than 50% and severe complications will occur. Hemodynamic disturbances lead to decreased blood perfusion in multiple organs. The recipient is also blocked by the blood return of the gastrointestinal viscera and lower limbs, resulting in severe congestion of viscera and lower limbs, and increased venous pressure, which makes it difficult to control intraoperative bleeding and oozing. Therefore, the role of portocaval bypass equipment is indispensable. . [0003] At present, roller p...

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Problems solved by technology

[0004] In order to overcome the deficiencies in the above prior art, the object of the present invention is to provide a vena cava shunt and portacaval anticoagulant catheter and a preparation method thereof. The portocaval shunt catheter can simultaneously complete the intracavity shunt of the recipient's inferior vena cava and the non-invasive temporary portocavity shunt, avoiding the congestion of the middle and lower body and visceral damage during the anhepatic phase of liver transplantation, that is, the The application of the vena cava shunt catheter in the anhepatic stage can make more than half of the stagnant blood in the lower body and viscera flow back to the heart, and can maintain the stability of systemic hemodynamics. Insufficient tract congestion and large circulation blood volume are beneficial to the recovery of intestinal function after operation; in addition, there will be no side effects of acute renal insufficiency, and the safety of the operation can be improved, and no hemorrhage can be achieved during liver transplantation; the lower cavity of the recipient can be reduced The wall tension of the vein ensures a wider surgical field of view, is more convenient and safe, and achieves the simplification of the liver transplantation technique, and its preparation method adopts the combination technology of polyethyleneimine heparin, which has an ideal anticoagulant effect and avoids bleeding during the operation And the disadvantage of poor blood compatibility

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