Spiral centrifugal impeller and blood pump

A technology of centrifugal impeller and helical blade, which is applied in the field of medical equipment, can solve the problems of patients with stroke and hemolysis, and achieve the effects of reducing severity, smooth flow field and easy processing

Pending Publication Date: 2022-07-22
中科润腾医疗科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the blades of the current centrifugal blood pumps are completely radial blades. When the radial blades have a large shear stress when in contact with blood, there will be more serious hemolysis, which will lead to stroke in patients.

Method used

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  • Spiral centrifugal impeller and blood pump
  • Spiral centrifugal impeller and blood pump
  • Spiral centrifugal impeller and blood pump

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Embodiment Construction

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for the purpose of description and to distinguish similar objects, and there is no sequence between the two, nor can they be construed as indicating or imply relative importance. Also, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0042]Centrifugal blo...

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Abstract

The spiral centrifugal impeller comprises a hub and at least one continuous spiral blade which is coaxial with the hub and fixedly installed on the hub, the hub is provided with a through hole coaxial with the spiral blade, each spiral centrifugal blade comprises a working face and a back face, the working face is a three-dimensional space curved face, and the back face is a three-dimensional space curved face. The contour line of the working face comprises an inlet edge, an outer edge molded line, a hub molded line and an outlet edge, the inlet edge and the outlet edge are arranged in a straight line mode, the thickness section of the spiral centrifugal blade is narrowed in the direction from the outer edge to the hub, and the working face and the back face are connected through a connecting face at the outer edge molded line. The connecting face inclines up and down in the direction from the back face to the working face and has an inclination angle alpha, the inclination angle alpha is gradually reduced to 0 degree in the spiral direction from the inlet edge to the outlet edge, and the length of the outlet edge is smaller than that of the inlet edge. The blood pump at least has the following advantages that generation of hemolysis can be avoided, and the blood compatibility of the blood pump is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a spiral centrifugal impeller and a blood pump. Background technique [0002] The descriptions in this section merely provide background information related to the present disclosure and do not constitute prior art. [0003] A heart assist device is an artificial organ that can partially or completely replace the natural heart function and maintain normal blood circulation in the human body. In fact, it is a mechanical device that transports blood flow, and it can be understood as a mechanical pump, also known as a blood pump. Partially replacing the natural heart function is called Ventricular Assist Device (VAD), mainly used for acute myocarditis, myocardial infarction, temporary loss of cardiac function and other diseases, to assist the heart to restore normal function; Total Artificial Heart (TAH) can be used as a transitional means for patients with end...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M60/165A61M60/178A61M60/232A61M60/38A61M60/40A61M60/804A61M60/806A61M60/857
CPCA61M60/165A61M60/178A61M60/232A61M60/857A61M60/804A61M60/806A61M60/40A61M60/38
Inventor 荆腾孙浩然
Owner 中科润腾医疗科技(苏州)有限公司
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