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Magnetic-driven axial-flow auxiliary pump for heart

A heart-assisted, axial-flow technology, applied in medical science, prostheses, etc., can solve problems such as infection, wear and tear, and reduced immune function

Inactive Publication Date: 2006-02-01
张杰民 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional axial flow pump cannot solve the problem of damage to the blood and coagulation mechanism caused by cutting blood during the rotation of the blades
[0005] Commonly used heart assist devices can lead to various bacterial and even fungal infections, thrombosis, destruction of blood and blood vessels, and decreased immune function
Long-term use of axial flow pumps for advective perfusion is still controversial. Experiments have shown that long-term use of non-fluctuating blood flow can lead to thinning of the aortic wall structure and decreased vasoconstrictive function.
Moreover, the wear of the shaft neck of the axial flow pump and the blood flow, and the cutting of the blood by the rotating blades all lead to the destruction of blood and the formation of thrombus.

Method used

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  • Magnetic-driven axial-flow auxiliary pump for heart
  • Magnetic-driven axial-flow auxiliary pump for heart
  • Magnetic-driven axial-flow auxiliary pump for heart

Examples

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Embodiment Construction

[0033] The magnetically driven axial flow pump of the present invention includes: (1) stator windings are wound around the cylindrical stator shell; (2) a centrally enlarged cylindrical rotor is located in the center of the axial flow pump; (3) permanent magnet The rotor is composed of 8 magnetic materials arranged radially. (4) The double helical blades are fixed on the inner surface of the permanent magnet rotor; (5) A central shaft is fixed at the center of the entire rotor; (6) The permanent magnet rotor and the shell are separated from the blood by a sealing gasket to form a minimum air gap. (7) The two ends of the central shaft are matched with the sleeves at the center of the stator cantilever to form a magnetic suspension rotor.

[0034] For specific embodiments of the present invention, please refer to Figure 1 to Figure 12 . figure 1 It is a schematic diagram of the structure of the present invention, which includes three components: a stator 1, a rotor, and a DC stabil...

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Abstract

The invention discloses a magnetic dive axial-flow heart assistant pump, composed of stator, rotor, and DC voltage-stabilized power supply. The stator comprises stator winding and stator casing and the rotor composed of tube high-energy level magnet and propelling equipment. The propelling equipment integrated composed of internal sleeve, central shaft and two impeller blades to develop a spiral sealed blood propelling channel; the rotor is placed in the subulate shaft sleeve of stator cantilever. The stator winding generates magnetic field to drive the rotor to put the blades in motion, makes the blood one-way flow and assists or completely replaces the heart to pump blood. The stator winding is connected with the power supply.

Description

Technical field [0001] The invention relates to a heart assist pump. Background technique [0002] During nearly half a century of research on cardiac assist devices, their materials, structures, manufacturing processes, functions, and service life have been continuously improved and developed. Different driving methods such as pneumatic, electric, and electro-hydraulic have appeared. The blood flow is also closer to the physiological heart. Heart assist devices are an important means of maintaining life for critically ill patients. It is divided into three ways: final replacement, waiting for transplantation, reducing heart load, and promoting functional recovery. [0003] With the continuous development of medical science, more and more patients are suffering from acute heart failure, unable to leave the cardiopulmonary bypass machine after heart surgery, and waiting for heart transplantation. They are in urgent need of cardiac assistance for short-term transition or long-term ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/10
Inventor 张杰民万峰
Owner 张杰民
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