Completely laparoscopic staged hepatectomy using round-the-liver ligation and its instrument

Patent metadata

Field	Value
Publication number	US-11864769-B2
Application number	US-202117470808-A
Country	US
Kind code	B2
Filing date	Sep 9, 2021
Priority date	May 14, 2021
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A laparoscopic staged hepatectomy using round-the-liver ligation is carried out includes: (1) a laparoscopic operation is performed with general anesthesia using round-the-liver ligation, the branches of the portal vein of the hemiliver are ligated, a tourniquet is used to tighten the connecting part between the right and left hemilivers to block the communicating blood flow between the hemiliver to be removed and the hemiliver to be reserved, a drainage tube is put into the peritoneal cavity, then close the peritoneal cavity; (2) the patient gradually resumes eating after the first operation, and recuperate to make the volume of the hemiliver increase to an expected volume; (3) after the hemiliver increases to the expected volume, a laparoscopic liver resection is carried out with general anesthesia to remove the diseased hemiliver, and then the patient is nursed to be completely recovered. An instrument for implementing the laparoscopic staged hepatectomy is also disclosed.

First claim

What is claimed is:

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.

2. The instrument according to claim 1 , which is characterized in wherein the buckle is a second sleeve sleeved in the first sleeve which is provided with a longitudinal second inner hole for passing the liver-around band; the outer wall of the second sleeve is provided with a protruding portion which is slidably inserted in the longitudinal guide groove on the first sleeve, and the aforementioned vernier is provided on the protruding portion, and the inner wall of the second sleeve is provided with the second ratchet tooth.

3. The completely laparoscopic staged hepatectomy according to claim 1 , wherein the other end of the liver-around band opposite to the free end is provided with a base, and the through hole is provided on the base; under a pulling force of the liver-around band, the first sleeve and the abdominal wall catheter and the base press in sequence to position the liver-around band.

Assignees

• Univ Zhejiang

Inventors

• Cai Xiujun
• Peng Shuyou
• Wang Yifan
• Lu Chen
• Chen Mingyu

Classifications

• A61B17/12013 Primary

  for use in minimally invasive surgery, e.g. endoscopic surgery · CPC title

• A61B17/1285

  for minimally invasive surgery · CPC title

• A61B17/1325

  with means for applying local pressure (pressure pads A61F5/30) · CPC title

• A61B17/1327

  Tensioning clamps · CPC title

• A61B2017/00407

  Ratchet means · CPC title