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Self-damping vibration-elimination magnetic levitation artificial heart blood pump rotor and preparation method thereof

A technology for suppressing vibration and artificial heart, which is applied in the dynamics of rotors and the field of medical equipment, can solve the problems of increasing the failure of rotor and stator magnetic suspension, reducing the reliability and comfort of artificial heart system, increasing the heat generation of magnetic suspension system, etc., so as to reduce the magnetic suspension Possibility of failure, improvement of reliability and comfort, effect of vibration reduction

Active Publication Date: 2014-01-29
苏州同心医疗科技股份有限公司
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AI Technical Summary

Problems solved by technology

When the frequency of the aforementioned interference is close to or equal to the resonance frequency of the rotor, the rotor will generate severe resonance, which will greatly increase the heating of the magnetic levitation system, increase the possibility of scraping between the rotor and the stator, and even the failure of the magnetic levitation, thereby reducing the artificial heart. System reliability and comfort

Method used

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  • Self-damping vibration-elimination magnetic levitation artificial heart blood pump rotor and preparation method thereof
  • Self-damping vibration-elimination magnetic levitation artificial heart blood pump rotor and preparation method thereof
  • Self-damping vibration-elimination magnetic levitation artificial heart blood pump rotor and preparation method thereof

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Embodiment Construction

[0033] The invention provides a magnetic suspension artificial heart blood pump rotor with self-damping and vibration suppression, such as Figures 1 to 3 As shown in the figure, it includes a circular rotor body 1 suspended in the middle of the blood pump by a magnetic suspension system. A cylindrical hollow portion 4 is provided on the axial end surface, and at least one damping block 5 is arranged in the hollow portion 4, and the number of damping blocks 5 is preferably 6-12.

[0034] In order to prevent the damping block 5 from rubbing and colliding with the inner surface of the hollow portion 4 , that is, the outer end surface 5 of the rotor, the outer peripheral surface 51 of the damping block 5 is a curved surface, and the damping block 5 is connected to the first side surface of the rotor body 1 . 12 is connected by the elastic connector 3 which can oscillate both axially and radially at the same time. If it is determined that there is no radial vibration, the elastic ...

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Abstract

The invention discloses a self-damping vibration elimination magnetic levitation artificial heart blood pump rotor and a preparation method thereof, which comprises a ring-shaped rotor body which is suspended at the middle of a blood pump through a magnetic levitation system, wherein the rotor body rotates around a rotating shaft which is positioned at the middle of the rotor body, the rotor body is internally provided with a hollow part, at least one damping block is placed in the hollow part, the damping block is connected with the rotor body through an elastic connector, and the hollow part is filled with damping liquid. The invention has the main beneficial effects that as the damping block and the damping liquid are arranged, damping can be provided for the swinging and the vibration of the rotor in the interior of the rotor, accordingly, the vibration of the blood pump rotor, caused by various imbalances, can be greatly reduced, the heat of the magnetic levitation system can be reduced, the scraping between the blood pump rotor and a stator can be reduced, the probability of failure of the magnetic levitation can be greatly reduced, and further, the reliability and the comfortableness of an artificial heart system can be improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to an implantable artificial organ manufacturing technology, in particular to a rotor of an artificial heart blood pump using magnetic levitation technology. The invention also relates to the field of rotor dynamics, in particular to the suppression of vibrations when the rotor may resonate. Background technique [0002] The rapid development of the artificial heart is mainly due to the rapid development of its main component, the blood pump. Today, the magnetic levitation blood pump has become an important technology in the new generation of artificial hearts. In order to meet the implantability requirements, the magnetic levitation magnetic circuit of the artificial heart is usually optimized very carefully. The blood pump suspends the impeller through the magnetic levitation system, the impeller is directly permanent magnetized, and the permanent magnet coil is built into ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/12
Inventor 尹成科陈琛
Owner 苏州同心医疗科技股份有限公司
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