Myocardial protective liquid perfusion device

Abstract

The invention discloses a myocardial protective liquid perfusion device. The device comprises a first pipeline for infusion of a crystal myocardial protective liquid, a second pipeline for infusion ofblood and a bifurcation loop module for achieving mutual switching between the two pipelines. The bifurcation loop module comprises a first branch the two ends of which are communicated with the front and rear segments of the first pipeline respectively, a second branch the two ends of which are communicated with the front and rear segments of the second pipeline respectively, a third branch thetwo ends of which are communicated with the front segment of the first pipeline and the rear segment of the second pipeline respectively and a fourth branch the two ends of which are communicated withthe front segment of the second pipeline and the rear segment of the first pipeline respectively, wherein the third branch intersects with the fourth branch. The myocardial protective liquid perfusion device can cope with temporary operation of replacement of the pipelines, switching of a perfusion pump and adjustment of looseness of a pump head and accurately and quickly complete perfusion of the myocardial protective liquid.

Description

technical field [0001] The invention belongs to the field of medical devices, and relates to an auxiliary device for heart surgery, in particular to a myocardial protection fluid perfusion device. Background technique [0002] Cardiac surgery routinely needs to perfuse the patient's heart with myocardial protective fluid during open-heart surgery, so that the heart is in a static state of electrical and mechanical activity ("stopping") during the operation of the heart, and the heart is allowed to stop after the operation. Blood flow is restored and the heart resumes beating. Currently, the clinically used myocardial protective solutions can be divided into four types according to the different combinations of matrix fluids and components: simple crystalloid myocardial protective solution, 4:1 blood-containing myocardial protective solution (that is, 4 parts of blood and 1 part of crystalloid mixed solution), del Nido myocardial protective solution, Protective solution (ie,...

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Problems solved by technology

[0003] On the other hand, before aortic patency, if antegrade perfusion of warm blood is required, and / or retrograde suction is required to expel intracardiac gas through the aortic root, the routine operation is to turn off the perfusion pump and drain the fluid from the pump tank. Taking out the crystalloid tube and clamping it, and then readjusting the tightness of the pump head is quite cumbersome, and the adjustment methods of different brands of perfusion blood pumps are also different, and the probability of misoperation is high

If the adjustment is too tight, the damage of blood cells will be increased, and the service life of the pump head will be shortened. If the adjustment is too loose, it will not be able to suck back

In addition, if the whole set of myocardial protection fluid perfusion pipeline is misoperated, it will lead to air intake, which is difficult to deal with quickly, causing air intake in the patient's arterial system, causing a series of injuries such as nervous system damage, endangering the safety of the operation and patients

Therefore, in the clinical extracorporeal circulation work, the operation of temporarily replacing the pipeline, switching the perfusion blood pump, and / or adjusting the tightness of the pump head is a high-risk operation for clinical errors, which often delays the operation process, and even leads to surgical accidents and doctor-patient disputes , with serious consequences for patients and hospitals

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