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Ventricular auxiliary pump

A ventricular assist and impeller technology, applied in the field of medical devices, can solve the problems of reduced reliability, unfavorable miniaturization, large size and weight, etc.

Pending Publication Date: 2018-06-19
SHENZHEN CORE MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of impeller suspension methods, but the current suspension methods often have small end-face clearance, poor blood compatibility, or require multiple displacement sensors and independent active suspension drive coils to assist, resulting in complex structures of ventricular assist pumps. And the disadvantages of heavy weight, reduced reliability, and correspondingly higher power consumption and cost
Furthermore, if such a suspension mechanism is arranged in an axial manner, the axial size of the ventricular assist pump will increase, which is not conducive to miniaturization

Method used

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0028] see figure 1 The ventricular assist pump 100 shown includes a casing 10 , a drainage cone 20 , an impeller 30 , a motor 40 , a fixed magnetic ring 51 and a moving magnetic ring 52 . The housing 10 includes a hollow inner chamber, and an inlet 11 and an outlet 12 communicating with the inner chamber. A partition 13 is also provided in the inner chamber of the housing, and the partition 13 divides the inner chamber of the housing 10 ...

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PUM

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Abstract

The invention relates to a ventricular auxiliary pump. The pump comprises a drainage cone, an impeller, a motor, a fixed magnet ring and a movable magnet ring which are arranged in a hollow housing, and an inlet and an outlet are formed in the housing. The drainage cone is opposite to the inlet and sleeved with the impeller, and a flow passage is formed in the impeller. A rotor of the motor is fixedly arranged on the impeller. According to the pump, when the impeller is driven by the motor to rotate, the impeller maintains a suspension state in the radial direction by means of a pair of the magnet rings, and the suspension state of the impeller in the radial direction is achieved under the action of a stator and the rotor. The pump has the advantages of being simple in structure and smallin size, and the pump has higher flood compatibility.

Description

technical field [0001] The present application relates to the field of medical devices, in particular to a ventricular assist pump. Background technique [0002] The ventricular assist pump is an artificial mechanical device that pumps blood directly from the venous system or the heart into the arterial system, partially or completely replacing the work of the ventricle. In order to improve blood compatibility and reduce the side effects of clinical treatment, the current development trend of ventricular assist pumps is to use non-contact bearing technology. It is characterized in that the suspension of the impeller and rotor is realized by physical means. Since there is no direct contact between the rotor and the stator during the operation of the impeller, it can minimize the damage to the blood caused by the ventricular assist pump, and effectively reduce the occurrence of thrombus and hemolysis. It has the advantages of high reliability and long life, suitable for impl...

Claims

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Application Information

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IPC IPC(8): A61M1/12
CPCA61M2210/125A61M60/205A61M60/419A61M60/148A61M2210/005A61M60/178A61M60/232A61M60/422A61M60/824A61M60/82
Inventor 余顺周罗次华孔令林黄俊
Owner SHENZHEN CORE MEDICAL TECH CO LTD
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