A blood flow blocking device for liver surgery

Abstract

The invention discloses a blood occlusion device for a hepatic operation. The device comprises a tube body capable of being planted into a blood vessel. A displacement prevention device is arranged on the outer surface of one end of the tube body. A cavity is arranged inside the tube body. A blood occlusion device body is arranged inside the cavity. The displacement prevention device comprises an expander. The expander comprises a plurality of step protrusions evenly arranged on the outer surface of one end of the tube body. The step protrusions are in a wedge shape. An adjusting groove is formed in the surface, matched with the outer surface of the tube body, of each step protrusion. A groove is formed in the position, matched with each adjusting groove, of the tube body. According to the technical scheme, the displacement prevention device and the blood occlusion device are indispensable; if the displacement prevention device is omitted, the fixed position cannot be ensured, and the operation progress is affected; if the blood occlusion device is omitted, the predetermined effect cannot be achieved. The displacement prevention device and the blood occlusion device are operated in the operation process, so that the operation time is greatly shortened, and the survival probability of a patient is increased.

Description

technical field [0001] The invention relates to a blood flow blocking device for liver operation, which belongs to the field of medical instruments. 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. In the clinics with few cases, the mortality rate can even reach 80-100%. 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 operability is poor and the efficienc...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the existing technology, the technical problem to be solved by the present invention is to provide a blood flow blocking device for liver surgery, which solves the shortcomings of the existing blood blocking device, and can prevent the inferior vena cava from flowing freely. Wound outflow, obtain a clear surgical field of view, easy to repair the damaged part of the blood vessel

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