Human body simulation circulating system

Abstract

The invention relates to a human body simulation circulating system in the technical field of the detection of medical apparatuses, which comprises a heart simulating assembly, a heart control system, a sensing device, a data acquisition system, a peripheral simulating assembly, a cardiac ventricle auxiliary device and a controller, wherein the heart control system is connected with the heart simulating assembly; the heart simulating assembly and the peripheral simulating assembly are sequentially connected in series to form a heart simulating flow path system; the cardiac ventricle auxiliary device is connected in parallel with the heart simulating assembly to form a cardiac ventricle auxiliary flow path system; the sensing device is connected to a heart simulation and cardiac ventricle auxiliary combined flow path system; the input end of the data acquisition system is respectively connected with the sensing device and a computer to receive a pressure flux signal and a control command, and the output end of the data acquisition system is connected with the heart control system and the cardiac ventricle auxiliary device. The invention can detect the pressure and the flux of a plurality of positions in a flow path and is convenient for continuously optimizing the structure of the cardiac ventricle auxiliary device and a control system.

Description

technical field [0001] The invention relates to a simulation system in the technical field of medical device detection, in particular to a human body simulation circulatory system which can be used for in vitro performance testing of ventricular assist devices and can generate pulsating liquid flow. Background technique [0002] At present, ventricular assist devices can not only be used as a transitional bridge for heart transplantation, but also a purpose method leading to myocardial recovery, and are more used in the treatment of severe heart failure in the end stage. However, to apply ventricular assist devices to animal experiments and clinical trials, their performance must be tested in an extracorporeal simulated circulatory system, and the structure and control system of ventricular assist devices must be optimized to reduce the time and cost of animal experiments. [0003] Through literature search to the prior art, it is found that "In Vitro Simulated Cardiovascula...

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Problems solved by technology

[0003] Through literature search to the prior art, it is found that "In Vitro Simulated Cardiovascular System Hemodynamic Performance Analysis" published on "Journal of Biomedical Engineering" (2006, Volume 23, No. 4, Page 778-780) mentioned a An in vitro simulated circulation test bench, which is constructed based on a three-element single elastic cavity model, is mainly used to test the performance of axial flow blood pumps, including parameters such as speed, pressure and flow in the circulation loop, but the test bench does not The control of the blood pump builds a closed-loop loop, and the collected signals are not used to realize the feedback control of the blood pump. At the same time, the beating state of the natural heart is not simulated, so the interaction between the heart simulation component and the blood pump cannot be reflected.

[0004] It was also found through retrieval that the patent document of Chinese Patent Publication No. CN101380490A provides a medical experiment system capable of real-time monitoring of the working state of the artificial heart blood pump, which is basically the same in structure as the extracorporeal circulation simulation test bench mentioned in the above-mentioned documents. The main difference is that the temperature test of the blood pump is added, and all the detected flow, temperature, and pressure signals are displayed on the PC through the data collector at the same time. pulsating state for simulation

[0005] The patent document of Chinese Patent Publication No. CN1846605A provides a system for testing the simulated extracorporeal circulation of an artificial heart. The system builds a model of systemic circulation and pulmonary circulation, which can characterize the dynamic response characteristics of human arteries. The system can be selected according to the initial It has certain adaptability to the test physiological environment, but this system is only suitable for testing the total artificial heart, and does not consider the state of the natural heart, and it cannot test the ventricular assist device.

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