Implantable pulsating blood pump driven by ultrasonic linear motor

A linear motor and implantable technology, applied in the field of medical devices, can solve problems such as low reliability, complex structure, and blood damage, and achieve the effects of improving reliability, reducing quantity, and reducing burden

Active Publication Date: 2017-08-04
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to overcome the existing problems of complex structure, low reliability, large volume and d

Method used

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  • Implantable pulsating blood pump driven by ultrasonic linear motor
  • Implantable pulsating blood pump driven by ultrasonic linear motor
  • Implantable pulsating blood pump driven by ultrasonic linear motor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1

[0034] Such as figure 1 As shown, an implantable pulsatile blood pump driven by an ultrasonic linear motor includes a blood cavity, a driving part, a sensing module, a control module, a housing 4, and a base 5. The driving part is connected to the blood cavity, the sensing module and the control module respectively. Connected, the top of the driving part is fixedly connected to the bottom of the blood cavity, the sensing module is arranged outside the driving part, and the control module is connected to the driving part through wires; the driving part is arranged inside the housing 4, and the blood cavity, housing 4 and base 5 are connected in sequence , The blood chamber cover 1 is fixedly connected to the housing 4, and the elastic film 8 is fixedly connected to the housing 4 and is arranged inside the housing 4; the sensor module collects information related to the driving part and transmits the collected information to the control module, and the control mod...

Example Embodiment

[0040] Example 2

[0041] Embodiment 2 is basically the same as embodiment 1, and the difference is mainly reflected in the linear drive motor.

[0042] Such as figure 1 with figure 2 As shown, the driving part includes a linear guide 3 and an ultrasonic linear motor. The ultrasonic linear motor includes a stator 6, a barrel push plate 2 and a horizontal push plate 9. The stator 6 is fixedly arranged on the base 5, and the top edge of the barrel push plate 2 is connected to The outer edge of the horizontal push plate 9 is fixedly connected. The barrel push plate 2 and the horizontal push plate 9 together form the slider of the ultrasonic linear motor. The stator 6 drives the barrel push plate 2 through the linear guide 3 along the vertical opening of the housing 4 The groove moves straight up and down, and the barrel-shaped push plate 2 drives the horizontal push plate 9 to push the blood chamber. The barrel-shaped push plate 2 is a through-ring cylindrical structure; the stator 6...

Example Embodiment

[0043] Example 3

[0044] Embodiment 3 is basically the same as Embodiment 1, and the difference is mainly reflected in the linear drive motor.

[0045] The driving component includes a linear guide 3 and an ultrasonic linear motor. The ultrasonic linear motor includes a stator 6 and a diamond-shaped cylinder 7. The stator 6 is fixed on the base 5, and the diamond-shaped cylinder 7 is the slider of the ultrasonic linear motor. The stator 6 drives the diamond-shaped cylinder. 7 The linear guide 3 moves up and down along the vertical groove opened in the housing 4 to push the blood cavity. The rhombus cylinder 7 is a solid polyhedral cylinder or a hollow polyhedral cylinder; the rhombus cylinder 7 is embedded in the elastic film 8.

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Abstract

The invention discloses an implantable pulsating blood pump driven by an ultrasonic linear motor. The implantable pulsating blood pump comprises a blood cavity, a driving part, a sensing module, a control module, a shell 4 and a base 5. The driving part is connected with the blood cavity, the sensing module and the control module, the driving part is arranged in the shell 4, and the blood cavity, the shell 4 and the base 5 are sequentially connected. The sensing module collects relevant information of the driving part and transmits the collected information to the control module, the control module controls the driving part to move, and the driving part drives the blood cavity to generate deformation. The driving part comprises a linear guide rail 3 and the ultrasonic linear motor, and the ultrasonic linear motor provides power for the pulsating blood pump. The ultrasonic linear motor is adopted as a pump body power source, a complex motion conversion structure is avoided, the power is directly transmitted to the elastic blood cavity, the volume of the blood cavity is changed, pulsating flow is formed and output, a pump body can be miniaturized, reliability is improved, and the ultrasonic linear motor is adjustable in stroke and rapid in response.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to an implantable pulsating blood pump driven by an ultrasonic linear motor. Background technique [0002] At present, ventricular assist devices have not only become a bridge for the transition of heart transplantation, but are gradually developing into a permanent treatment for heart failure. Blood pumps are the key components of artificial heart assist devices, and can be divided into two types: pulsatile and advective, according to their output types. Electromagnetically driven rotary blood pumps, such as centrifugal and axial flow pumps, can provide advective assistance to the cardiovascular system. This type of rotary blood pump has been widely used clinically because of its small size, easy implantation, and high reliability. Destructive effect, easy to form thrombus. Coupled with the low pulsatility of the rotary impeller blood pump due to poor dynamic characteristics, it...

Claims

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Application Information

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IPC IPC(8): A61M1/12
CPCA61M2210/12A61M60/148A61M60/40
Inventor 杨明孟凡
Owner SHANGHAI JIAO TONG UNIV
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