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Single-ended axial separation type magnetic suspension bearing applied to centrifugal artificial heart pump

A technology of magnetic levitation bearing and artificial heart, applied in the direction of shaft and bearing, bearing, blood pump, etc., can solve the problems of large volume, trouble and increase the pain of patients.

Active Publication Date: 2015-09-09
SHANDONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Most of the existing artificial heart pumps have the problems of large volume and heavy weight, and it is very troublesome to implant, which increases the difficulty of the operation and increases the pain of the patient.

Method used

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  • Single-ended axial separation type magnetic suspension bearing applied to centrifugal artificial heart pump
  • Single-ended axial separation type magnetic suspension bearing applied to centrifugal artificial heart pump
  • Single-ended axial separation type magnetic suspension bearing applied to centrifugal artificial heart pump

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] For single-end axial magnetic bearings, it is generally necessary to use gravity, fluid force or other forces to combine with single-end control force to achieve single-end stability control. The invention innovatively designs the single-end axial magnetic bearing, adopts a separate structure, relies on the single-end magnetic bearing itself to generate suction and repulsion to achieve stable suspension of the rotor in the axial direction, solves the problem of no need for other forces in the axial direction, saves space and can realize axial The problem of suspension towards stability. The single-end control magnetic levitation method proposed by the present invention, in order to realize the two-way magnetic force, has designed a structure in which separate suction and repulsion coexist, see figure 1 The axial bearing in the pump makes full us...

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Abstract

The invention discloses a single-ended axial separation type magnetic suspension bearing applied to a centrifugal artificial heart pump. The magnetic suspension bearing comprises a fixed base, a suspension body, a magnet, a permanent magnet and an electromagnetic coil, wherein an upper radial permanent magnetic bearing inner magnet is arranged at the projected upper end of the fixed base; a lower radial permanent magnetic bearing inner magnet is arranged at the projected lower end of the fixed base; the electromagnetic coil is arranged at the inner edge of the fixed base; a step is arranged at the bottom end of the projected part of the fixed base; an axial permanent magnetic bearing lower magnet is arranged in the step; the inner side of the suspension body fits the fixed base in shape, the upper end is provided with an upper radial permanent magnetic bearing outer magnet corresponding to the upper radial permanent magnetic bearing inner magnet, the middle part is provided with a lower radial permanent magnetic bearing outer magnet corresponding to the lower radial permanent magnetic bearing inner magnet, the middle position of the bottom end is provided with an axial permanent magnetic bearing upper magnet corresponding to the axial permanent magnetic bearing lower magnet, and the edge position of the bottom edge is provided with the permanent magnet; and the gap suspension and the gap size between the suspension body and the fixed base are realized through controlling the current magnitude of the electromagnetic coil.

Description

technical field [0001] The invention relates to a single-end axially separated magnetic suspension bearing applied to a centrifugal artificial heart pump. Background technique [0002] The artificial heart pump has been developed to the third generation, the main sign is the application of the rotor shaft suspension technology, which has the advantages of no friction, no wear and tear, and reduces the damage to the blood. The third-generation artificial heart pump, which uses magnetic suspension bearings instead of mechanical bearings, has been studied by many countries in the world and applied in developed countries such as the United States and Germany. [0003] Most of the existing artificial heart pumps have the problems of large volume and heavy weight, and it is very troublesome to implant, which increases the difficulty of the operation and increases the pain of the patient. [0004] Reducing the volume, weight and power consumption of artificial heart pumps has alwa...

Claims

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Application Information

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IPC IPC(8): F16C32/04A61M1/12A61M60/122A61M60/232A61M60/822
CPCA61M60/148A61M60/232A61M60/122A61M60/822
Inventor 刘淑琴边忠国
Owner SHANDONG UNIV
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