US 12,011,581 B2
Micro magnetic-hydraulic suspension centrifugal blood pump
Zhongmin Liu, Shanghai (CN); Feng Wan, Shanghai (CN); Yuanyi Peng, Shanghai (CN); and Guorong Li, Shanghai (CN)
Appl. No. 17/597,435
Filed by SHANGHAI DONGXIN BIOMEDICAL TECHNOLOGY CO., LTD., Shanghai (CN)
PCT Filed Mar. 1, 2021, PCT No. PCT/CN2021/078407
§ 371(c)(1), (2) Date Jan. 6, 2022,
PCT Pub. No. WO2022/141782, PCT Pub. Date Jul. 7, 2022.
Claims priority of application No. 202011599149.8 (CN), filed on Dec. 29, 2020.
Prior Publication US 2024/0024658 A1, Jan. 25, 2024
Int. Cl. A61M 60/232 (2021.01); A61M 60/422 (2021.01)
CPC A61M 60/232 (2021.01) [A61M 60/422 (2021.01); A61M 2205/0211 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A micro magnetic-hydraulic suspension centrifugal blood pump, comprising a pump housing, a rotor, an impeller, a servo motor, an inner magnetic core group, an outer magnetic ring group, a limiting device, and a suture snap ring device, wherein the rotor is seamlessly connected with the impeller; the rotor is arranged in an inner pipe of the blood pump and is driven by the servo motor to drive the impeller to do work; the inner magnetic core group comprises a plurality of circular magnetic sheets arranged at a lower end inside the rotor; the outer magnetic ring group comprises a plurality of magnetic rings arranged inside a lower end of the pump housing and surrounding the inner magnetic core group; the limiting device comprises a ceramic sheet and a ceramic cone; the ceramic sheet is inlaid in a lower end of the rotor impeller; the ceramic cone is arranged inside the lower end of the pump housing and is opposite to the center of the ceramic sheet.