Half-blade-rotor-type axial flow blood pump

A half-blade, rotor-type technology, used in blood pumps, blood pumps, hypodermic instruments, etc., can solve the problems of blocked blood vessels, stroke or embolism, patient bleeding, etc., to eliminate the tip gap, improve the rectification effect, and reduce hemolysis. Effect

Inactive Publication Date: 2014-10-22
FUWAI HOSPITAL OF CARDIOVASCULAR DESEASE CHINESE ACAD OF MEDICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem that the axial flow blood pump needs to solve is hemolysis and thrombus. Severe hemolysis in the blood pump will cause the patient to bleed, and the thrombus will block the blood vessel and cause stroke or embolism.

Method used

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  • Half-blade-rotor-type axial flow blood pump
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  • Half-blade-rotor-type axial flow blood pump

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Embodiment Construction

[0025] see Figure 1 to Figure 10 Shown: below in conjunction with implementation example the present invention is described further, but is not limited to the content described below.

[0026] The invention provides an axial flow blood pump with a cantilevered rotor half-blade and a rear guide vane with a jujube-shaped flow channel structure, the structure of which is as follows figure 1 As shown, the axial flow blood pump includes an inner cylinder 1, a rear guide 2, a rear guide bearing 3, an outer cylinder end cover 4, a rotating shaft 5, an outer cylinder 6, a magnetic steel 7, a coil 8, a rotor 9, a front guide 10, and a front bearing 11. Straight blades 12; in this embodiment, the rear guide 2 and the leading guide 10 are fixed on the inner wall of the inner cylinder 1, the rear guide bearing 3 is fixed in the inner hole of the rear guide 2, and the leading guide bearing 11 is fixed in the inner hole of the leading guide 10 , the rotating shaft 5 and the magnetic steel...

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Abstract

The invention discloses a half-blade-rotor-type axial flow blood pump which comprises an inner barrel, a front guide, a rotor and a rear guide. The front guide has three straight blades, the rotor has two rotating blades, the two rotating blades of half-blade structures are distributed on a front half of a hub of the rotor only, and blade tip clearance length of the rotor is reduced by a half; the rear guide has three big rotating blades and three small rotating blades, the big rotating blades and the small rotating blades are distributed at intervals, each big rotating blade is provided with a suspension arm with one-half length, each suspension arm extends into a rotor area to form a suspension arm blade structure, and a runner portion on the outer surface of the rotor is made by smooth date-pit-shaped cubic spline curves. The half-blade-rotor-type axial flow blood pump has the advantages that a whole runner formed by the front guide, the rotor and the rear guide is designed to be of a date-pit-shaped structure, and the smooth cubic spline curves are adopted, so that pressure rise of the blood pump is increased, flow field distribution in the pump is improved, area of a rotating-stilling interface is reduced, and risk of thrombosis at a bearing is lowered.

Description

technical field [0001] The patent of the present invention relates to the technical field of axial flow blood pumps. It is a half-blade rotor axial flow blood pump structure in which only half of the blades are on the rotor, and the blades of the rear guide rectifier cantilever and extend into the rotor area. The structure is extremely large. The blood damage at the tip of the rotor is reduced, and the inner rotor part of the blood pump is designed as a jujube-shaped structure to reduce the thrombus in the bearing area of ​​the axial flow blood pump. Background technique [0002] The main consequence of heart failure of all causes is a decrease in the heart's ability to pump blood. The role of the circulatory auxiliary blood pump is to compensate or replace the heart function, reduce the preload of the heart, benefit the recovery and balance of myocardial metabolism and nutrition, and promote the recovery of heart function. For the heart that cannot fully restore heart funct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/12
CPCA61M60/122A61M60/205
Inventor 胡盛寿周建业桂幸民柳光茂金东海孙寒松
Owner FUWAI HOSPITAL OF CARDIOVASCULAR DESEASE CHINESE ACAD OF MEDICAL SCI
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