A Variable Speed Control Method Based on a New Model of Heart Pump
A control method and heart pump technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as feedback control not involving rotary pumps and abnormal working conditions of non-heart pumps, so as to improve reliability, Effect of improving pulsation and satisfying physiological needs
Active Publication Date: 2021-05-25
ANHUI TONGLING BIONIC TECH CO LTD
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However, the patent does not involve the mathematical model of the rotary pump, nor does it perform feedback control on abnormal working conditions of the heart pump
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[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below.
[0054] Such as Figure 2-3 Shown, the specific process of the present invention is: Step 1, set out the mathematical model of rotary heart pump from the hydraulic characteristic of heart pump and similarity theorem; Step 2, couple the heart pump model and cardiovascular model, establish the systematic Coupling model; step 3, detect the blood pressure and pressure of the heart pump and cardiovascular system; step 4, detect the suction and reflux of the heart pump according to the blood pressure and pressure information; step 5, determine the suction and reflux according to the detection results The speed regulation scheme in the flow state; step 6, input the speed into the model coupled with the heart pump and the blood circulation system, and combine the normal physiological information output by the physiological reference model to determine the final s...
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The invention discloses a variable speed control method based on a new model of a heart pump, which belongs to the field of artificial heart control. According to the hydraulic characteristics and the similarity theorem of the rotary heart pump, the invention constructs a mathematical model among the heart pump speed, flow and pressure. The control method based on this model combines the mathematical model of the heart pump with modern detection and control technology. By collecting blood pressure and flow signals, the suction reflux detector is used to determine the degree of suction reflux. Combined with the physiological reference model, the rotational speed feedback control is determined. method. The present invention establishes the mathematical model of the rotary pump through the working principle of the rotary pump, and the heart pump variable speed control method based on the mathematical model can effectively detect the working state of the heart pump, timely eliminate the suction or reflux, and improve the performance of the heart pump. System reliability.
Description
technical field [0001] The invention belongs to the category of artificial heart, and in particular relates to a variable speed control method of a mathematical model of a rotary heart pump. Background technique [0002] Rotary commercial heart pumps have been widely used in the treatment of patients with severe heart failure and as a transitional means of transplantation. After long-term mechanical assistance, it has been shown that although the traditional constant speed working mode improves the durability and reliability of the pump, because the output is non-pulsatile blood flow, it reduces the pulsation pressure and pulsation index of the entire blood circulation system, thus affecting the entire pump. Hemodynamic properties of the phases of the cardiac cycle. This control method will lead to many complications such as gastrointestinal bleeding, aortic insufficiency, and decreased ventricular systole, which reduces the quality of life of the patient. [0003] Therefo...
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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 王芳群贺照明王颢吉敬华荆腾
Owner ANHUI TONGLING BIONIC TECH CO LTD