Auxiliary device for liver segment resection under guidance of B-mode ultrasound

Abstract

The invention discloses an auxiliary device for liver segment resection under the guidance of B-mode ultrasound. The auxiliary device comprises a straight sleeve, an inner sleeve, a memory steel needle and a blocking rope, wherein the front end of the memory steel needle is of a U-shaped structure, and a first mounting seat is fixedly arranged at the tail end of the memory steel needle; a second mounting seat is fixedly arranged at the tail end of the inner sleeve; a mounting groove is formed in the top of the second mounting seat, the first mounting seat is located in the mounting groove, the first mounting seat and the second mounting seat are detachably connected, the memory steel needle penetrates through the bottom of the inner sleeve, and the memory steel needle is detachably arranged in the inner sleeve in a sleeved mode; the inner sleeve is made of a flexible material; the straight sleeve and the blocking rope are detachably connected with the second mounting seat; and the blocking rope is matched with the inner sleeve, and the blocking rope is also made of a flexible material. Under the guidance of B-mode ultrasound, the device can block liver-entering blood flow of the to-be-cut liver segment in hepatectomy, so massive hemorrhage in a liver segment resection process is prevented.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an auxiliary device for segmental hepatectomy guided by B-ultrasound. Background technique [0002] Segmental hepatectomy is used in the surgical treatment of hepatic bile duct stones, and partial hepatectomy is used to treat intrahepatic bile duct stones. It was first created and used by Professor Huang Zhiqiang in 1958. The practice of more than 40 years has proved that partial hepatectomy is used for hepatolithiasis, and it combines the dual effects of relieving hepatic duct obstruction (stones, especially with existing hepatic and bile duct stenosis) and removing purulent infection lesions, effectively improving the liver and gallbladder disease in my country. Long-term therapeutic effect of tube stones. [0003] During hepatectomy, hepatic blood flow should be controlled in advance to prevent hemorrhage during resection. There are currently three methods for control...

AI Technical Summary

Problems solved by technology

There are currently three methods for controlling hepatic blood flow: ① dissect the hilum of the liver, and block the blood flow into the liver from the left and right hemihepates at the left and right corners of the transverse fissure to control most of the bleeding during resection of the left and right hepatic segments; This method usually injects indocyanine green into the vein under the guidance of B-ultrasound to identify the boundary of the liver segment to be resected, but this method fails to block the vein or liver pedicle fundamentally; ② Intermittent block of the hilum of the liver In patients without liver cirrhosis, the blood flow into the liver can be performed for about 20 minutes each time. This method has strict requirements on the operation time. After more than 20 minutes, the blockage of the blood flow into the liver in the hilum needs to be released, and the operation can be repeated after waiting for about 10 minutes. Blocking the hepatic blood flow into the hilum for surgery prolongs the operation time; ③The modified whole hepatic blood flow block is only applicable to the resection of liver segments VII and VIII, and is not suitable for resection of other liver segments

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