Multi-mode ventricle auxiliary blood pump controller

Abstract

A multi-mode ventricle auxiliary blood pump controller belongs to the technical field of biomedical engineering and relates to a controller of a mechanical heart blood pump. The controller comprises an upper computer control module and serial port communication, wherein, the upper computer control module is connected with a lower computer control module by the serial port communication, the lowercomputer control module controls the running of the blood pump and measures and provides status signals of the blood pump for the upper computer control module; the controller also comprises a signalcollection module used for monitoring the state of human body, and the signal collection module provides status signals of human body for the upper computer control module. According to the status signals of the blood pump and the human body, upper computer control module can realize six working models which are constant flow rate mode, minimum energy consumption mode, minimum blood damage mode, etc. The design is more humane and reasonable, and can regulate the working sate of the blood pump in real time according to the physiological status of patients, so as to adapt to the physiological needs of the patients; the blood pump controller also can realize low energy consumption, and is beneficial to preventing the situations such as blood damage and the like, thus overcoming the disadvantages of the existing controller.

Description

technical field [0001] The invention belongs to the technical field of biomedical engineering and relates to a controller of an artificial heart blood pump. Background technique [0002] The artificial heart is a ventricular assist device, which is mainly used to treat patients with heart failure. The controller in the artificial heart is the core part of the stable work of the artificial heart and the intelligent heart assist device. [0003] Abroad, in the artificial heart introduced by patent WO2006 / 055745A2 and US 20040215050A1, the blood pump flow rate is used as the control signal, and the working state of the blood pump is controlled by a certain control method. Three control modes are proposed in the control method: constant speed mode, constant current mode, and maximum flow mode. Due to the design of three control modes, this control system has greatly improved the reliability and sensitivity of the control. It is a relatively good control system made abroad at p...

AI Technical Summary

Problems solved by technology

First, the above designs generally consume a lot of energy, all of which are above 15W, so that the practicability of the instrument will be reduced, especially when the patient cannot be charged quickly, a large amount of power consumption will make the patient's condition very dangerous

The second is that due to the large speed of the blood pump or the large rate of speed change, the damage to the blood is relatively large.

The third is that the speed of the blood pump in the artificial heart is not directly controlled according to the patient's physiological condition, so that the artificial heart works in the best state suitable for the patient's condition.

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