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Non-impeller rotor valveless pump for artificial heart

A technology of impeller rotor and artificial heart, which is applied in the direction of drug equipment, hypodermic injection equipment, and other medical equipment, and can solve the problems of centrifugal heart pump miniaturization, thrombus or hemolysis, deterioration and degeneration, etc., so as to reduce the difficulty of surgery and infection risk, simple exercise form, and good stress status

Pending Publication Date: 2020-07-17
HUAQIAO UNIVERSITY
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  • Abstract
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AI Technical Summary

Problems solved by technology

The shell structure of the centrifugal heart pump is simple, but the rotor is mostly an impeller structure. In order to ensure good working performance and sufficient strength, the rotor should not be too small, which limits the miniaturization of the centrifugal heart pump
In addition, under the action of impeller mechanical movement and centrifugal movement, there is a risk of deterioration and denaturation of blood, which may lead to thrombus or hemolysis

Method used

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  • Non-impeller rotor valveless pump for artificial heart
  • Non-impeller rotor valveless pump for artificial heart
  • Non-impeller rotor valveless pump for artificial heart

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] refer to figure 1 and Figure 4 , a non-impeller rotor valveless pump for an artificial heart, comprising a pump housing 7, the cross-sectional profile of the inner wall of the housing is oblong, and the oblong outline is defined by the first semicircle 20 and the first straight line of the inner wall of the housing. The line segment 15, the second semicircle 23 of the inner wall of the housing and the second straight segment 19 are connected end to end. The first semicircle 20 of the inner wall of the housing and the second semicircle 23 of the inner wall of the housing are two semicircles of equal diameter. The first straight segment 15 and The second straight line 19 is two parallel straight lines equal in length, and the two ends of the first straight line 15 and the second straight line 19 are respectively tangent to the first semi...

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Abstract

The invention provides a non-impeller rotor valveless pump for an artificial heart. The valveless pump comprises a pump shell, wherein the cross section profile of the inner wall surface of the shellis oblong, a first rotor and a second rotor are two cylinders with equal diameters, the first rotor and the second rotor are arranged in the pump shell in parallel, an eccentric distance is formed between the axis of the first rotor and the first axis of the inner wall of the shell, a first end cover and a second end cover are respectively arranged at two ends of the pump shell, a closed cavity isformed in the pump shell, two ends of the first rotor are supported on the first end cover and the second end cover through a first bearing and a second bearing, the first rotor can rotate freely, shoulders at two ends of the first rotor are pressed on inner rings of the first bearing and the second bearing respectively, and outer rings of the first bearing and the second bearing are pressed on the shoulders of the first end cover and the second end cover respectively, so that the axial positioning of the first rotor is realized. The valveless pump can realize the advantages of simple motionform, compact structure, good stress condition of parts and long service life.

Description

technical field [0001] The invention relates to the technical field of fluid machinery, in particular to a non-impeller rotor valveless pump for an artificial heart. Background technique [0002] An artificial heart is a mechatronic device that can be implanted into the human body to replace the heart to maintain the normal blood circulation of the human body. It is currently one of the main technical means for the treatment of heart failure. The existing artificial heart pumps can be divided into pulsating pumps and continuous flow pumps according to the characteristics of the output blood flow. Among them, the pulsating pump can intermittently pump blood according to a certain frequency, which is consistent with the natural physiological characteristics of the human body. Due to the shortcomings of large volume, complex structure and fatigue damage of parts, this kind of pump appeared earlier, but it has been used less at present; the continuous flow pump can output blood ...

Claims

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Application Information

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IPC IPC(8): A61M1/12
CPCA61M2205/04A61M60/148
Inventor 郭桐林添良任好玲付胜杰陈其怀缪骋
Owner HUAQIAO UNIVERSITY
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