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A Feedback-Adjustable Extracorporeal Circulation Artificial Heart Pump

A technology of extracorporeal circulation and artificial heart, which is applied in the direction of blood circulation treatment, drug equipment, other medical equipment, etc. It can solve problems such as difficult matching adjustment, unfavorable movement of rolling pump, platelet aggregation, etc., to facilitate adjustment and avoid blood components Injury, inhibition of thrombus effect

Active Publication Date: 2022-02-22
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing artificial heart pumps mainly include rolling heart pumps and centrifugal heart pumps. Rolling pumps have disadvantages such as unfavorable movement and serious blood loss; centrifugal heart pumps are prone to some blood erosion due to the introduction of rotating parts. Bad areas will lead to platelet aggregation and then cause thrombus, seriously endangering the life of the patient; in addition, as a continuous flow pump, the centrifugal heart pump cannot better realize the pulsating pulsating flow of the heart, for different applicable objects, especially in There are also problems in the weaning process that are difficult to match and adjust, and increase the risk of thrombus

Method used

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  • A Feedback-Adjustable Extracorporeal Circulation Artificial Heart Pump
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  • A Feedback-Adjustable Extracorporeal Circulation Artificial Heart Pump

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Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1: Stable cycle working condition

[0027] In steady cycle conditions, blood passes through figure 1 In the shown circulatory system, the one-way valve 1 flows into the inlet section 1 of the device of the present invention, forms a continuous flow in the elastic biological cavity and flows out from the outlet section 2, and passes through figure 1 The one-way valve 2 shown is back to the circulation system.

[0028] Diastolic state simulation: such as figure 2 As shown, the variable frequency motor 8 is in the Figure 8 Driven by the periodic pulse current shown, when the input pulse current is positive, the motor rotor 9 rotates counterclockwise according to the right-hand principle, and the rotational torque is transmitted to the one-way bearing 10, which in turn drives the slider 11 to rotate, passing through the piston The rod thread 12 drives the piston rod 7 to compress the spring 15 to move and store elastic potential energy; the linear bearing 1 ...

Embodiment 2

[0032] Embodiment 2: Power-off state

[0033] In the weaning state, the extracorporeal circulation artificial heart pump of the present invention maintains the simulation process of alternating the diastolic state and the systolic state in Embodiment 1. By monitoring the human body's circulatory signs, the position of the limit end cap 16 is adjusted step by step to reduce the elasticity of the spring 15. Potential energy size; by gradually reducing the pulse current input frequency of the variable frequency motor 8, until the input is zero; after the human body resumes spontaneous circulation, remove the limit screw 17, remove the limit end cap 16 and the spring 15, and inject it Slowly push the blood in the elastic bio-chamber 3 into the circulation line to enter the human body circulation, and lock the position of the piston rod 7 in the state where the volume of the elastic bio-chamber 3 is zero, and complete weaning.

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Abstract

The invention discloses a feedback-adjustable extracorporeal circulation artificial heart pump, which comprises: an inlet section, an outlet section, a polyurethane transparent pump chamber, a piston rod, a variable frequency motor, an adjustable pump casing and its internal connection transmission device; The periodic pulse current that meets the target pulsation frequency drives the piston rod to move, alternately stores and releases the elastic potential energy, and drives the elastic biological cavity to relax and contract through the movement of the piston, simulating the state of relaxation and contraction of the heart; by adjusting the limit The adjustment of the pulsation intensity can be realized by adjusting the position of the hole; the adjustment of the pulsation frequency can be realized by adjusting the frequency of the input pulse current. The invention can effectively realize the adjustment of the pulsation frequency and pulsation intensity, and is beneficial to the adjustment of the weaning process; it can effectively avoid the blood component damage caused by the contact between the moving parts and the blood, thereby inhibiting the occurrence of thrombus.

Description

technical field [0001] The invention relates to the technical field of an extracorporeal circulation artificial heart pump, in particular to a feedback-adjustable extracorporeal circulation artificial heart pump. Background technique [0002] Extracorporeal membrane oxygenation technology is mainly used to provide extracorporeal respiration and circulation for patients with severe cardiopulmonary failure or waiting for organ transplantation, and its core parts are membrane lungs and artificial heart pumps. During the new crown epidemic, extracorporeal membrane oxygenation technology has successfully treated many cases of severe patients with new coronavirus pneumonia, and the curative effect is remarkable. As the core component of the extracorporeal circulation system, the artificial heart pump is a device that provides blood circulation support through mechanical circulation. Its main function is to replace the beating function of the ventricle to provide power, so as to ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/16A61M1/36
CPCA61M1/3666A61M1/1621A61M1/1698A61M1/3621A61M2202/0413
Inventor 唐雨萌柳阳威谢楠
Owner BEIHANG UNIV