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Magnetic controlled valveless pulsate blood pump

A magnetic control and blood pump technology, which is applied in the field of blood pumps, can solve the problems of large volume and small force-energy density of blood pumps, and achieve the effects of small volume, improved load capacity, and reduced excitation power

Inactive Publication Date: 2006-05-24
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It retains the advantages of the pulsating blood pump in line with the physiological characteristics of the human body and has little damage to blood components, overcomes the shortcomings of traditional blood pumps, and adopts magnetically controlled drives to solve the problem of low energy density and large volume of blood pumps in traditional pneumatic and electric mechanisms The pump body adopts a valveless structure to simplify blood pump control, increase reliability and operating life

Method used

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  • Magnetic controlled valveless pulsate blood pump
  • Magnetic controlled valveless pulsate blood pump
  • Magnetic controlled valveless pulsate blood pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: as figure 1 As shown, a valveless blood pump with an electromagnetic drive. The electromagnetic driver includes a magnetically conductive core 8, a magnetically conductive moving iron 10, a return spring 9 and a control winding 11. The connection relationship is: the cross section of the magnetically conductive core 8 is a rectangular frame with an opening, and the magnetically conductive moving iron 10 is placed on the conductive magnet. In the opening of the core 8, the lower end of the magnetically conductive moving iron 10 is connected with the connecting rod 7 of the valveless pump. A return spring 9 is installed between the upper end of the magnetically conductive moving iron 10 and the inner wall of the magnetically conductive core 8. The return spring 9 has an upper and lower Limiting top cover and bottom cover, the top cover is fixed on the inner wall of the magnetically conductive core 8, the bottom cover is fixed on the upper surface of the magn...

Embodiment 2

[0022] Embodiment 2: as figure 2 As shown, a valveless blood pump using a magnetically controlled shape memory alloy driver. The magnetically controlled shape memory alloy driver uses a nickel-manganese-gallium alloy magnetically controlled element 13 to replace the magnetically conductive moving iron 10 in Embodiment 1, and the return spring 9 is placed in the pump body 1 of the valveless pump. The specific structure is: The top cover of the back-moving spring 9 is fixed on the elastic plate 2 on the valveless pump, the bottom cover is fixed on the inner surface of the lower wall of the valveless pump pump body 1, and the baffle plate 14 is fixed above the opening inside the guide magnetic core 8. Between the plate 14 and the connecting rod 7 of the valveless pump is the magnetic control element 13, which is in surface contact with the connecting rod 7 and the baffle plate 14, and the magnetic control element 13, the connecting rod 7 and the permeable magnetic core 8 There ...

Embodiment 3

[0024] Embodiment 3: as image 3 , Figure 4 , Figure 5 As shown, a valveless blood pump using a permanent magnet bias differential control magnetic driver. It is an improved structure of Example 1 and Example 2, canceling the return spring, and adopting a permanent magnet bias magnetic circuit and a differential control method. Its structure includes non-magnetic coupling 17, control winding 11, coupling 19, connecting plate 18, two magnetic cores 8 with the same structure, permanent magnets 15 with the same size, performance and horizontal magnetization direction, non-magnetic A magnetic isolation plate 16; a nickel-manganese-gallium alloy magnetic control element 13 with the same size and performance, the connection relationship is: the two ends of the connector 17 are respectively a magnetic control element 13, a magnetic isolation plate 16, and a permanent magnet 15. The side is the magnet core 8, and the center of the magnet core 8 has a groove. In the middle of the...

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Abstract

The present invention relates to a magnetic control valve-free pulsation type blood pump, belonging to the field of blood pump technology. It includes controller, valve-free pump and driver. The valve-free pump is connected with driver by means of connecting bar on the valve-free pump, the driver is connected with controller by means of control winding on it, and the controller can be used for controlling whole working process of said blood pump.

Description

technical field [0001] The invention belongs to the technical field of blood pumps, in particular to a magnetically controlled valveless pulsating blood pump. Background technique [0002] Heart disease is a common disease among middle-aged and elderly people, and myocardial failure is an important cause of death. At present, the only effective way to treat advanced myocardial failure is heart transplantation. According to statistics, only 5% of the people waiting for heart transplantation are currently able to undergo heart transplantation, and about 20% of the patients died while waiting for heart transplantation. Due to the scarcity of donor hearts, people place high hopes on artificial hearts. The main component of the artificial heart is the electric blood pump that maintains the blood supply function of the heart. The artificial heart blood pump is divided into two types: pulsating pump and non-pulsating pump according to the nature of the blood flow it generates. No...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/10
Inventor 王凤翔葛超邢军强鲁军张凤阁
Owner SHENYANG POLYTECHNIC UNIV
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