Blood discharge cage and blood pump thereof

By designing a blood pump with spaced-out blood cages and flushing outlets, the problems of blood mixing loss and insufficient structural strength in blood pumps are solved, achieving more efficient blood delivery and impeller stability, and improving the overall performance and safety of blood pumps.

CN121401591APending Publication Date: 2026-01-27ANHUI TONGLING BIONIC TECH CO LTD
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Patent Information

Application Number
CN202410975690.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-07-19
Publication Date
2026-01-27

AI Technical Summary

Technical Problem

The existing blood pump's blood cage design results in significant blood mixing losses, insufficient structural strength, and affects the impeller's rotational stability and blood safety.

Method used

A cylindrical bleeding cage is designed with a bleeding port and a flushing outlet spaced axially. A cover protects the bleeding port and the flushing outlet. The bleeding port has an asymmetrical structure with a U-shaped notch and the chamfered edges are coated with colloid. A support rod fixes the impeller to prevent blood turbulence and heat accumulation.

Benefits of technology

It reduces energy loss caused by blood mixing, improves the hydraulic performance and structural strength of the blood pump, ensures impeller rotation stability, prevents blood coagulation and hemolysis, and extends the service life of the blood pump.

✦ Generated by Eureka AI based on patent content.
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Abstract

According to the bleeding cage and the blood pump thereof, the blood mixing loss can be reduced, the supporting strength is good, the whole bleeding cage is in a circular tube shape, a far-end opening of the bleeding cage forms a blood inlet, a bleeding opening and a flushing outlet are formed in the outer wall of the bleeding cage, and the bleeding opening and the flushing outlet are formed in the axial direction at intervals. Normal blood pumped by the blood pump flows out from the blood outlet, and flushing fluid flows out from the flushing outlet after flushing the gap, so that energy loss caused by blood mixing is reduced, and the hydraulic performance of the blood pump is improved; the bleeding cage has a certain length in the axial direction, and the bleeding opening and the flushing outlet are arranged at an interval, so that the overall structural strength of the bleeding cage is ensured, and the bleeding cage is prevented from being deformed due to stress; meanwhile, the turbulence influence generated when blood flows through the bleeding cage is reduced, stable rotation of the magnet is improved, and then the rotation stability of the whole blood pump is guaranteed.
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