A hepatic portal blood flow blocking device

A technology of blood flow blocking and hepatic porta, which is applied in the field of medical devices, can solve problems such as hemorrhage in the liver section, poor blocking effect, and hemihepatic section bleeding

Active Publication Date: 2021-04-20
李强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hemihepatic blood flow occlusion still has obvious disadvantages: when the liver is cut, the unblocked hemihepatic section will continue to bleed, and in addition to the possible existence of left and right hepatic communication branches, sometimes the bleeding of the hemihepatic section may be very serious. Not as good as the Pringle method
However, this technology requires corresponding ultrasound technology and puncture technology, which limits its clinical application.

Method used

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  • A hepatic portal blood flow blocking device
  • A hepatic portal blood flow blocking device
  • A hepatic portal blood flow blocking device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 figure 2The hepatic portal blood flow occlusion device shown includes the catheter 1, the blocking sac 2 and the positioning head 3. The three parts are connected end to end in sequence. The catheter is used for liquid delivery and is connected to the front-end occluding sac. The proximal end of the catheter is provided with a protective plug 4 to prevent external impurities from entering the catheter; the blocking bag includes at least one layer of flexible layer 5 material, and the inner surface of the flexible layer or in the flexible layer is provided with linear support frames 6 arranged at intervals. The support frame is made of shape memory alloy; the flexible layer surrounds the inside to form a cavity 7; the end of the cavity is raised away from the catheter to form the positioning head, and the center of the positioning head is provided with a pinhole-type through hole 8 to connect to the outside world In the cavity, the positioning head is ...

Embodiment 2

[0038] The present invention also discloses another embodiment: a hepatic porta blood flow blocking device, which includes a catheter 1, a blocking capsule 2 and a positioning head 3, which are connected end to end in sequence, and the catheter is used for liquid delivery and is connected to The blocking bag at the front end is provided with a protective plug 4 at the base end of the catheter to prevent external impurities from entering the catheter; the blocking bag includes at least one layer of flexible layer 5 material, and the inner surface of the flexible layer or the flexible layer is provided with intervals. A linear support frame 6, the support frame is made of shape memory alloy; the flexible layer surrounds the inside to form a cavity 7; the end of the cavity is raised away from the catheter to form the positioning head, and the center of the positioning head is The pinhole-shaped through hole 8 connects the outside to the cavity, and the positioning head is also coa...

Embodiment 3

[0040] The present invention also discloses another embodiment: a hepatic porta blood flow blocking device, which includes a catheter 1, a blocking capsule 2 and a positioning head 3, which are connected end to end in sequence, and the catheter is used for liquid delivery and is connected to The blocking bag at the front end is provided with a protective plug 4 at the base end of the catheter to prevent external impurities from entering the catheter; the blocking bag includes at least one layer of flexible layer 5 material, and the inner surface of the flexible layer or the flexible layer is provided with intervals. A linear support frame 6, the support frame is made of shape memory alloy; the flexible layer surrounds the inside to form a cavity 7; the end of the cavity is raised away from the catheter to form the positioning head, and the center of the positioning head is The pinhole-shaped through hole 8 connects the outside to the cavity, and the positioning head is also coa...

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Abstract

The invention discloses a hepatic portal blood flow blocking device, which relates to the field of clinical medicine, and comprises a catheter, a blocking bag and a positioning head. The base end of the catheter is provided with a protective plug to prevent external impurities from entering the catheter; At least one layer of flexible layer material, the inner surface of the flexible layer or in the flexible layer is provided with linear support frames arranged at intervals, and the support frames are made of shape memory alloy; the flexible layer surrounds the interior to form a cavity; the end of the cavity The positioning head is formed by a protrusion away from the catheter. The center of the positioning head is provided with a pinhole-shaped through hole connecting the outside to the cavity. The positioning head is also covered with an annular positioning ring. It realizes the ability to reduce the requirements for ultrasound-guided technology and puncture technology during use, and realizes simple and rapid blood flow occlusion in the hepatic portal vein, so as to implement precise resection. The technical effect of reducing the chance of portal vein metastasis and improving the survival rate of patients in the perioperative period after surgery.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a hepatic portal blood flow blocking device. Background technique [0002] Surgery on high-risk parts of the liver generally requires hepatic blood flow occlusion to prevent excessive bleeding during surgery. The duct system in the liver is very complicated, with three sets of blood vessels criss-crossing and one set of bile duct system, so liver cancer surgery in high-risk areas is often accompanied by bleeding. Chinese patients with liver cancer often have liver cirrhosis in varying degrees and have more bleeding than ordinary patients. [0003] Therefore, we need to perform blood flow occlusion during liver surgery. Blood flow occlusion is divided into local blood flow occlusion, regional blood flow occlusion and whole liver blood flow occlusion. Whole liver blood flow occlusion can ensure "bloodless liver resection", but usually the resection of liver tumors in high-risk p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/12
CPCA61B17/12A61B2017/00867
Inventor 李强李云王新安张宗杰
Owner 李强
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