Miniature conduit pump motor with flexible PCB winding

Abstract

The invention designs a miniature conduit pump motor with a flexible PCB winding, the miniature conduit pump motor comprises a stator assembly and a rotor assembly, the stator assembly comprises the flexible PCB winding, a stator iron core, a stator outer sleeve, a stator inner sleeve and an electronic commutator, and two bearings support the rotor to rotate; the rotor assembly comprises permanent magnet steel, a transmission output shaft and a rotor outer sleeve. According to the scheme, the ultrathin flexible PCB winding is subjected to multi-layer winding, so that the cup-shaped PCB stator winding is formed. The structure is free of motor tooth grooves, eddy current loss caused by the tooth groove effect does not exist, and meanwhile, the stator iron-core-free structure also enables the loss of the stator iron core to be obviously reduced; a winding of a traditional micro motor needs to be manufactured through a special machine or a complex process, a conductor in the flexible PCB can be printed into different shapes, later performance optimization of the motor is facilitated, and therefore the flexible PCB winding is suitable for the micro conduit pump motor designed in the invention.

Description

technical field [0001] The patent of the present invention relates to a micro catheter pump motor with flexible PCB winding, which belongs to the technical field of micro motors. Background technique [0002] In recent years, the morbidity and mortality of heart disease in many countries have been increasing year by year. Heart transplantation in the terminal stage is an effective treatment plan, but there is a serious shortage of heart donors, and the increasingly serious contradiction between supply and demand has prompted the development of ventricular assist devices. Catheter pump is an artificial heart pump for the treatment of acute severe heart failure. It is used for short-term assistance and a small blood circulation assisting device to maintain the patient's physiological blood pumping. The Impella commercial catheter pump developed by Abiomed has been applied clinically and can be implanted in patients with heart failure for short-term assistance. Catheter pumps ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the disadvantages of cogging torque generated by the stator when the traditional motor runs at high speed, and the shape of the winding is not easy to change, this patent has invented a miniature catheter pump motor with a flexible PCB winding, which can realize the easy implantability of the catheter pump motor and reduce the Catheter pump motor loss, improve the output performance of the catheter pump motor at high speed, and facilitate the production of stator windings

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