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Hydraulic coronary ligation instrument

A ligation instrument and hydraulic technology, which is applied in veterinary instruments, medical science, veterinary surgery, etc., can solve the problems of using artificial respirator, and achieve the effect of increasing the success rate, improving the success rate and easy operation.

Inactive Publication Date: 2009-01-14
CHINA PHARM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first two methods also have the disadvantage of requiring the use of an artificial respirator throughout the process.

Method used

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  • Hydraulic coronary ligation instrument
  • Hydraulic coronary ligation instrument
  • Hydraulic coronary ligation instrument

Examples

Experimental program
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Effect test

Embodiment

[0022] like figure 1 , 2 , 3, the main components of the present invention are made up of a soft water bag 1 and a soft catheter 2 thereof, and the soft catheter mouth 3 is connected with a port of the U-shaped pipe 10, and the soft water bag 1 and the soft catheter 2 are filled with normal saline, and the U-shaped The tube is filled with mercury. The syringe can inject physiological saline from one port, adjust the height of the mercury column, and cause proper pressure. This pressure is transmitted to the soft water bag to make it expand, because the soft water bag is tied with the coronary artery, its expansion compresses the coronary artery to occlude it, and causes ischemia at this time; if the normal saline in the U-shaped tube is drawn out, the mercury column will be reduced height, the pressure decreases, the pressure in the soft water bag decreases, and at this time, the coronary artery is recanalized. In the present invention, the soft water bag can expand after ...

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PUM

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Abstract

The present invention relates to a hydraulic type coronary arteriovenous ligature apparature. It is characterized by that its main components include soft water bag, soft catheter and U-shaped tube. The soft water bag is connected with soft catheter, the soft catheter orifice is connected with an end orifice of U-shaped tube, the soft water bag interior and soft catheter interior are filled up with physiological saline, the U-shaped tube interior is filled up with mercury. Said invention utilizes injector to inject physiological saline from one end orifice of U-shaped tube, regulate height of mercury column so as to produce proper pressure. The myocardial ischemia pretreatment animal model created by using said method is simple in operation, the experiment from start to end only has need of once thoracotomy, and regulates the pressure in the U-shaped tube interior in vitro to easily implement coronary arteriovenous ligature and secondary opening.

Description

technical field [0001] The invention relates to a hydraulic coronary ligation instrument which can realize repeated ligation of coronary arteries outside the body by only performing one thoracotomy. technical background [0002] Ischemic cardiomyopathy is a common disease and frequently-occurring disease. Myocardial ischemic preconditioning means short-term (2-3 minutes of ischemia followed by 5 minutes of perfusion), several times (2-3 times) ischemia and reperfusion. , can enhance the ability of the myocardium to resist ischemia-reperfusion injury, so exploring the mechanism of myocardial ischemic preconditioning and finding drugs that enhance myocardial ischemic preconditioning are important research directions today. The establishment of animal models of myocardial ischemia preconditioning is the basic technology of this kind of research. [0003] The establishment of this model is achieved through repeated ligation of the anterior descending coronary artery (hereinafte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61D1/00A61B17/12
Inventor 张陆勇段为钢严明
Owner CHINA PHARM UNIV
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