Pneumatic direct heart chamber auxiliary device and controller

Abstract

The invention relates to a pneumatic direct ventricle assisting device and a controller thereof in medical device technology field, which includes an air compressor, a first medical air canal, a pressure maintaining valve, a second medical air canal, an electrical proportional valve, a third medical air canal, a first medical tee joint T, a fourth medical air canal, an electromagnetic valve, a fifth medical air canal, a vacuum dump, a six medical air canal, a second medical tee joint T, a seventh medical air canal, an air pressure sensor, an eighth medical air canal, a third medical tee joint T, a ninth medical air canal, a tenth medical air canal, a cyathiform body, and a blood pressure sensor. The controller controls the air compressor and the vacuum valve to alternately deliver air through the respective air canals to the cyathiform body, so as to help the heart being assisted to contract and relax. When the air is periodically filled in the space between the shell and the intima, contraction force for the outer wall of the heat is supplied; when the air is periodically pumped out from between the shell and the intima, the intima restates, and the diastole happens.

Description

technical field [0001] The invention relates to a heart assist device in the technical field of medical devices, in particular to a pneumatic direct ventricular assist device and a controller thereof. Background technique [0002] Insufficient cardiac output is responsible for a large number of deaths each year. While most existing cardiac assist devices require the device to come into direct contact with the blood, causing many complications, direct ventricular assist avoids this problem. A direct ventricular assist device consists of two components: 1) a cup whose outer surface of the inner membrane closely conforms to the outer surface of the heart. 2) The actuation and control system that applies pressure to the inner membrane to assist the heart in pumping blood. [0003] After searching the literature of the prior art, it was found that the Chinese patent number is: 200480023755, which is a technology of a mechanical ventricular assist device directly driven by a liq...

AI Technical Summary

Problems solved by technology

However, in actual clinical applications, the liquid is heavy, and the reaction speed is relatively slow compared to the fast beating of the failing heart; in the human body environment with very limited space, too many sensors are used, which increases the complexity of the auxiliary device and reduces the system performance. The reliability of the technology also increases the risk of infection; in addition, this technology also fails to propose how to correctly divide the two parts of the cup-shaped body in contact with the left and right ventricles

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