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Blood pump

A blood pump and blood flow technology, applied in the field of blood pumps, can solve the problems of limited size and shape design, increase the difficulty of impeller processing, reduce the pumping efficiency of the impeller, etc., achieve flexible design, increase load torque and power, and improve The effect of pumping efficiency

Pending Publication Date: 2021-04-02
SHENZHEN CORE MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnet on the impeller will increase the weight of the impeller and reduce the pumping efficiency of the impeller; moreover, the size and shape design of the impeller will be limited by the magnet on it, which will increase the processing difficulty of the impeller

Method used

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meani...

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Abstract

The invention provides a blood pump. The blood pump comprises a cannula having a blood flow inlet and a blood flow outlet, an impeller disposed within the cannula, and a driving unit for rotating theimpeller; the driving unit comprises a shell, a rotor and a stator, wherein the rotor and the stator are arranged in the shell; the rotor comprises a rotating shaft; and the driving unit is characterized in that the rotor also comprises at least two magnets arranged on the rotating shaft; the stator comprises a first stator body and a second stator body which are arranged around the rotating shaft; the first stator body and the second stator body are arranged in the axial direction in a spaced mode; a rotating magnetic field generated by the first stator body interacts with one of the two magnets so that the rotating shaft can rotate; and a rotating magnetic field generated by the second stator interacts with the other one of the two magnets so as to enable the rotating shaft to rotate. According to the blood pump, on the basis that the overall radial size of the blood pump is reduced, the output power and the load torque of the driving unit of the blood pump can be increased.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a blood pump percutaneously inserted into blood vessels of patients. Background technique [0002] An intravascular blood pump, designed to be inserted percutaneously into a patient's blood vessel, such as an artery or vein in the thigh or armpit, can be advanced into the patient's heart to function as a left ventricular assist device or a right ventricular assist device . Therefore, an intravascular blood pump may also be referred to as an intracardiac blood pump. [0003] The intravascular blood pump mainly includes an impeller and a motor driving the impeller to rotate. When the impeller rotates, blood is delivered from the blood inflow port of the blood pump to the blood outflow port. Specifically, when the motor works, a rotating magnetic field is generated, and the impeller is provided with a magnet interacting with the rotating magnetic field to make the impeller rotate ar...

Claims

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Application Information

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IPC IPC(8): A61M60/126A61M60/216A61M60/422A61M60/857
Inventor 余顺周
Owner SHENZHEN CORE MEDICAL TECH CO LTD
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