Patent ID: 11864769
Assignee: ZHEJIANG UNIVERSITY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A instrument for implementing the completely laparoscopic staged hepatectomy comprising a liver-around band made of flexible materials of which one end is a free end, and the other end is provided with a through hole; the free end passes through the through hole to form a loop that can tighten the liver; the side of the liver-around band facing away from the liver is defined as the outside; wherein, an outer side of the liver-around band is provided with first ratchet teeth; the free end of the liver-around band passes through the through hole, an abdominal wall catheter, and a pressure control device in sequence, and the abdominal wall catheter passes through the patient's abdominal wall;
the pressure control device includes a first sleeve and a buckle, the direction of the central axis of the first sleeve is taken as the longitudinal direction, the first sleeve is provided with a longitudinal first inner hole for passing through the liver -around band, and the buckle is fixed in the longitudinal guide groove of the first sleeve and can move longitudinally along the guide groove; the buckle is provided with a second ratchet tooth extending into the first inner hole; when the liver-around band passing through the first sleeve, the first ratchet tooth meshes with the second ratchet tooth; the second ratchet tooth allows the first ratchet tooth to slide in the positive direction of tightening the loop while preventing the first ratchet tooth from sliding in the reverse direction;
a spring arranged in the longitudinal direction is installed between the buckle and the first sleeve;
the buckle is provided with a vernier for marking the tightness of the liver-around band, and a scale of the vernier is provided on the first sleeve.