Title:
IMPELLER STRUCTURE, HEART PUMP, AND HEART ASSIST SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/174019
Kind Code:
A1
Abstract:
An impeller structure, a heart pump, and a heart assist system. The impeller structure comprises a hub (100) and a blade (200); the blade (200) is helically arranged on the hub (100); the blade (200) has a first axial section (210) and a second axial section (220) which are axially separated from the distal end to the proximal end; the diameter of the blade (200) in the first axial section (210) gradually increases from the distal end to the proximal end; the helix angle change rate of the blade (200) in the first axial section (210) is kept constant from the distal end to the proximal end; the second axial section (220) of the blade (200) is configured to drive a fluid to move. In the impeller structure, the heart pump, and the heart assist system, when the fluid flows through the blade (200) in the axial direction, due to a gradient structure of the diameter of the blade (200), an area having a large shear force will not be formed in the first axial section (210), thereby reducing damage to red blood cells and reducing escape of hemoglobin, so that the problem of hemolysis can be effectively alleviated.
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Inventors:
GAO FEI (CN)
LIU XUDONG (CN)
ZHANG JIYUAN (CN)
YI BO (CN)
LUO QIYI (CN)
CHANG ZHAOHUA (CN)
LIU XUDONG (CN)
ZHANG JIYUAN (CN)
YI BO (CN)
LUO QIYI (CN)
CHANG ZHAOHUA (CN)
Application Number:
PCT/CN2023/077528
Publication Date:
September 21, 2023
Filing Date:
February 22, 2023
Export Citation:
Assignee:
CARDIOPOWER MEDTECH SHANGHAI CO LTD (CN)
International Classes:
A61M60/806; A61M60/13; A61M60/165
Foreign References:
| US20180243489A1 | 2018-08-30 | |||
| CN112654389A | 2021-04-13 | |||
| CN106310410A | 2017-01-11 | |||
| CN107143527A | 2017-09-08 | |||
| CN104107466A | 2014-10-22 | |||
| CN104707194A | 2015-06-17 | |||
| US20050135948A1 | 2005-06-23 | |||
| US3299821A | 1967-01-24 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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