Total hepatic vascular exclusion auxiliary device

Abstract

The invention relates to a medical instrument, in particular to a total hepatic vascular exclusion auxiliary device, an operation method and application of the total hepatic vascular exclusion auxiliary device. The device comprises a support rod, a covered stent with elasticity and a control component controlling opening and closing of the covered stent, wherein the covered stent is covered on the support rod, the tail end of the covered stent is connected with the middle portion of the support rod, and the control component is respectively connected with the support rod and the covered stent. The operation method comprises the steps of fixing the support rod, operating the control component to enable the covered stent to be opened, and operating the control component to enable the covered stent to be closed. The device is especially applied to a surgery of handling hepatic vein and retrohepatic inferior vena cava injury, the total hepatic vascular exclusion auxiliary device is led into the retrohepatic inferior vena cava through the support rod and is matched with first hepatic portal exclusion to be used, total hepatic vascular exclusion can be achieved, and meanwhile blood flow in the retrohepatic inferior vena cava is not blocked. A position of the hepatic vein and retrohepatic inferior vena cava injury is enabled to acquire a clear blood-free operation view, operation is rapid and simple, and blocking efficiency is high.

Description

technical field [0001] The invention relates to a medical device, in particular to an auxiliary device for hepatic blood flow occlusion and its operating method and application. Background technique [0002] Injuries to the root of the hepatic vein and the retrohepatic inferior vena cava are one of the most difficult situations to deal with in abdominal trauma surgery. The mortality rate is extremely high, and the mortality rate can even reach 80-100% in clinics with few cases. The reason is that the wound is exposed It is extremely difficult, even if it is barely exposed, it is at the cost of massive bleeding and / or air embolism, and it is impossible to obtain a clear surgical field of view. [0003] Some previous methods include: 1. Use a hollow soft catheter, but the upper and lower livers need to be free to block the inferior vena cava, insert a blocking band, and even need a thoracotomy; Balloon soft catheters can achieve hepatic blood flow occlusion, but the operabili...

AI Technical Summary

Problems solved by technology

[0002] Injuries to the root of the hepatic vein and the retrohepatic inferior vena cava are one of the most difficult situations to deal with in abdominal trauma surgery. The mortality rate is extremely high, and the mortality rate can even reach 80-100% in clinics with few cases. The reason is that the wound is exposed Extremely difficult, even barely exposed at the cost of massive bleeding and / or air embolism, and cannot obtain a clear surgical field

[0003] Some previous methods include: 1. Use a hollow soft catheter, but the upper and lower livers need to be free to block the inferior vena cava, insert a blocking band, and even need a thoracotomy; Balloon soft catheters can achieve hepatic blood flow occlusion, but the operability is poor and the efficiency is low. Practice has proved that good survival rates have not been obtained, and now they are gradually being abandoned; 3. Use extracorporeal bypass devices, but the operation is cumbersome and the conditions require 4. In very rare cases, covered stents are used to achieve hemostasis, but it needs to be carried out under the condition of digital subtraction. After the stent is implanted, it will not be removed, and the subsequent risks such as thrombosis and embolism are negligible. However, at the same time, this method needs to be performed when the patient's vital signs are relatively stable, and it is not applicable to patients in the ongoing period of massive bleeding.

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