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A blood flow guiding device for a centrifugal magnetic levitation artificial heart pump

A technology of artificial heart and guiding device, which is applied in the direction of blood pump, suction equipment, medical science, etc., can solve the problem that the flow stagnation area cannot be completely eliminated, and achieve the elimination of the stagnation area in the low-velocity area of ​​blood, the elimination of thrombus formation, and the avoidance of thrombus The effect formed

Active Publication Date: 2017-03-08
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, despite the radial flow channels, the stagnation area cannot be completely eliminated

Method used

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  • A blood flow guiding device for a centrifugal magnetic levitation artificial heart pump
  • A blood flow guiding device for a centrifugal magnetic levitation artificial heart pump

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] A blood flow guiding device for a centrifugal magnetic levitation artificial heart pump, including a rotor thrust disc and a guide wire on the disc, such as figure 1 Shown is the structural diagram of the blood flow guiding device of the magnetic levitation centrifugal pump. The rotor thrust disc 1 rotates around the column in the middle of the shell. Due to the application of the magnetic levitation bearing, there is a gap between the rotor thrust plate 1 and the shell. When the rotor thrust plate 1 rotates, the blood is sucked in from the inlet, reaches the blood outlet along the arrow in the figure, and flows out along the outlet; in addition, a small part of blood enters the box and dotted line area in the figure, and due to the pressure difference, it flows from the rotor to the center The gap between the fixed shafts flows from bottom to to...

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Abstract

The invention discloses a blood flow guide device of a centrifugal magnetic suspension artificial heart pump. The blood flow guide device of the centrifugal magnetic suspension artificial heart pump comprises an outer shell, a rotor thrust disc and a guide wire. A stand column is fixed to the middle of the outer shell, the rotor thrust disc rotates around the stand column, a gap exists between the rotor thrust disc and the outer shell, the upper end of the outer shell is provided with a blood inlet, the lower end of the outer shell is provided with a blood outlet, and the rotor thrust disc is provided with the guide wire. When the rotor thrust disc rotates, blood is sucked from the inlet, one part of the blood reaches the blood outlet along a seam between the outer side of the rotor thrust disc and the outer shell and then flows out from the outlet, and the outer part of the blood flows back from bottom to top from a seam between the inner side of the rotor thrust disc and the stand column and then converges with the inflow blood at the inlet. The blood flow guide device of the centrifugal magnetic suspension artificial heart pump can guide and accelerate radial blood flow speed at the axle end in order to eliminate a blood low-speed area stagnation area at the axle end of a pump body, then avoid thrombosing, and accelerate the actual application progress of the artificial heart pump.

Description

technical field [0001] The invention relates to a blood flow guiding device of a centrifugal magnetic levitation artificial heart pump. Background technique [0002] After decades of development of the artificial heart pump, the core of the research mainly points to the problem of blood compatibility, that is, to reduce the incidence of hemolysis and thrombus through various methods while achieving auxiliary blood circulation. Methods to reduce hemolysis and thrombus include several aspects, such as improving the blood compatibility of the material itself, treating the surface of the flow channel, reducing input energy, reducing blood flow exposure time, replacing mechanical bearings with magnetic bearings, and so on. For now, improving the hemodynamic characteristics of artificial heart pumps, reducing shear stress, eliminating eddy currents, turbulence, eliminating stagnant areas, and reducing hemolysis and thrombus are still the key points. [0003] The research results ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/10
CPCA61M60/00
Inventor 边忠国刘淑琴
Owner SHANDONG UNIV
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