Artificial heart after load intelligent control system

An intelligent control system and artificial heart technology, applied in the field of biomedical engineering, can solve problems such as the inability to adjust the artificial heart rotation speed, increase the cardiac afterload, and affect the clinical effect of the artificial heart on the prognosis of patients.

Pending Publication Date: 2018-10-12
CHANGZHI JIUAN ARTIFICIAL HEART TECH DEV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Although the above invention can reduce the degree of adverse events caused by pumping, it does not target cardiac afterload
In addition, the current mainstream artificial heart control system in the industry is to keep the speed constant as the control target, and cannot adjust the speed of the artificial heart in time according to the change of the afterload of the heart.
According to the latest research results, inappropriate artificial heart assistance will significantly increase cardiac afterload, and the degree of cardiac afterload will directly affect the function of the heart, thereby affecting the prognosis of patients and the clinical effect of artificial heart

Method used

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  • Artificial heart after load intelligent control system
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  • Artificial heart after load intelligent control system

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Embodiment Construction

[0043] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings, and it is obvious that the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] Such as Figures 1 to 17 As shown, an artificial heart afterload intelligent control system includes a main control unit, the main control unit includes a microprocessor U1 (STM32F100C8T6), and the pin 5 and pin 6 of the microprocessor U1 (STM32F100C8T6) are connected to a crystal oscillator Circuit, pin 7 is connected to the reset circuit, pin 8 is grounded, pin 9 is connected to VDDA, pin 11 is connected to one end of resistor R1 and one end of resistor R2 at the same time, pins 12, 13 and ...

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Abstract

The invention discloses an artificial heart after load intelligent control system. The after load degree of a heart is estimated by detecting electrical parameters such as input voltage, current, high-order derivative of current signals and the pulsation degree of rotating speed, and an automatic control algorithm is adopted to calculate the optimal working rotating speed of the artificial heart.A speed command is sent to a brushless motor controller, and the brushless motor controller can display the rotating speed and working voltage of the artificial heart, and can set an alarm to achieveman-machine dialogue. The brushless motor controller receives the speed command from a main control unit, drives an artificial heart motor to run, and detects the rotating speed of the artificial heart through a back electromotive force method. An electrical safety protection unit improves the electrical safety level of the system through the double isolation technology to meet relevant electricalsafety standards. The system solves the problem in the prior art that the rotating speed of the artificial heart cannot be adjusted timely according to the change of the cardiac after load.

Description

technical field [0001] The invention belongs to the field of biomedical engineering, and in particular relates to an artificial heart afterload intelligent control system. Background technique [0002] An artificial heart is an implanted device that uses mechanical power to transport blood to partially or completely replace the pumping function of the heart. The ventricular implant part of the pump body is inserted into the ventricular cavity, and the outlet of the pump is connected with the ascending aorta (or descending aorta) through the artificial blood vessel to perform the bypass from the left ventricle to the aorta. The artificial heart is composed of an axial-flow pump cylinder and a rotating impeller located in it, and a permanent magnet rotor is embedded in the hub of the rotating impeller. The axial flow pump motor surrounds the outer wall of the axial flow pump pump barrel, and is composed of the stator core and stator winding of the axial flow pump motor. The p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/10
CPCA61M2205/3365A61M60/50
Inventor 沈喆陈海丰高斌田步升
Owner CHANGZHI JIUAN ARTIFICIAL HEART TECH DEV
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