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New cardiac pump model-based variable rotation speed control method

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, and achieve the goal of improving pulsatility Effect

Active Publication Date: 2017-08-15
ANHUI TONGLING BIONIC TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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

Method used

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  • New cardiac pump model-based variable rotation speed control method
  • New cardiac pump model-based variable rotation speed control method
  • New cardiac pump model-based variable rotation speed control method

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Embodiment Construction

[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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Abstract

The present invention discloses a new cardiac pump model-based variable rotation speed control method and belongs to the artificial heart control field. According to the method of the invention, the mathematical model of the rotational speed, flow rate and pressure of a cardiac pump is constructed according to the hydraulic characteristics and similarity theorem of a rotary cardiac pump. According to the model-based control method, the mathematical model and modern detection control technologies are combined; blood pressure and flow signals are acquired; suction and reflux degrees are determined by using a suction and reflux detector; and a rotation speed feedback control method is determined on the basis of a physiological reference model. Based on the working principle of the rotary pump, the mathematical model of the rotary pump is built. With the mathematical model-based cardiac pump variable rotation speed control method adopted, the working state of the cardiac pump can be effectively detected, suction or reflux can be eliminated timely, and the reliability of the cardiac pump system can be improved.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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