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Outer bearing type artificial heart blood pump

An artificial heart and external bearing technology, applied in the field of blood pumps, can solve the problems of red blood cell damage, bearing easy to form thrombus, etc., and achieve the effect of reducing hemolysis, low manufacturing process requirements, and small damage

Inactive Publication Date: 2009-05-20
BEIHANG UNIV +1
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the lubrication problem of the inner bearing type artificial heart blood pump, the high shear force of the blade tip of the rotor impeller during operation, the problem of damage to the formed components of the blood, especially the red blood cells, and the problem of easy formation of thrombus at the bearing, the purpose of the present invention is to provide An external bearing type artificial heart blood pump

Method used

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  • Outer bearing type artificial heart blood pump
  • Outer bearing type artificial heart blood pump
  • Outer bearing type artificial heart blood pump

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Embodiment Construction

[0016] Such as Figure 1 ~ Figure 4 As shown, the external bearing type artificial heart blood pump disclosed by the present invention is mainly composed of a casing 1, a solid support body 2 with a tapered head fixed in the casing 1, an external bearing rotor 3 and an outflow pipe connected to the tail of the casing 1 4 composition.

[0017] The outer bearing rotor 3 is composed of a rotor casing 31, a hollow hub 32 fixed inside the rotor casing 31, which is similar in shape to the head of the solid support body 2, and a screw fixed between the inner wall of the rotor casing 31 and the outer wall of the hollow hub 32. A type rotor impeller 33, a permanent magnet 34 fixed on the outer wall of the rotor casing 31, a bearing 35 fixed on the outer wall of the rotor casing 31, and a coil 36 sleeved on the outer wall of the permanent magnet 34 are combined.

[0018] The above-mentioned outer bearing rotor 3 is set behind the head of the solid support body 2 and is wrapped and fixe...

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Abstract

A blood pump with external bearing for artificial heart is composed of casing, solid supporting body with conic head, external bearing type rotor unit, and flow-out tube. Said rotor unit consists of shell, hollow hub, spiral blade wheel, permanent magnet, external bearing surrounding said shell, and the coil surrounding the external wall of said permanent magnet.

Description

technical field [0001] The invention relates to a blood pump for assisting blood flow in the heart, in particular to an external bearing type artificial heart blood pump. Background technique [0002] Clinically, patients with heart failure need to use artificial mechanical devices for adjuvant therapy. At present, the commonly used artificial mechanical assisted therapy devices include centrifugal pumps, axial flow pumps and pulsatile pumps, which are mainly used for ventricular assist therapy and total artificial heart. Because the axial flow blood pump has the characteristics of small size, high efficiency, and implantability, the axial flow blood pump is currently a research hotspot in clinical artificial ventricular assisting therapy devices. [0003] The most common axial flow pumps are internal bearing artificial heart blood pumps. The existing inner bearing type artificial heart blood pump has an inner bearing structure, that is, the support bearing driving the rot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/10
Inventor 薛嵩张岩桂幸民孙寒松胡盛寿朱晓东
Owner BEIHANG UNIV
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