Pulsator type blood pump driven by ultrasonic liner motors

A linear motor and pulsating technology, applied in the field of pulsating blood pumps, can solve the problems of transmission efficiency, reduce motor power output, increase blood pump dimensions, etc., reduce transmission energy consumption, achieve precise control, and compact structure Effect

Active Publication Date: 2010-01-13
心瓴上海医疗科技有限公司
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  • Abstract
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Problems solved by technology

The above two devices, since they all use ring-shaped ultrasonic linear motors, must use mechanical transmission devices in the structure to change the rotational motion of the motor into linear motion, so they have the following disadvantages: 1. Increase the overall size of the blood pump, which is not conducive to Implantation of the blood pump; 2. The efficiency problem of the transmission device reduces the power output of the motor

Method used

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  • Pulsator type blood pump driven by ultrasonic liner motors
  • Pulsator type blood pump driven by ultrasonic liner motors
  • Pulsator type blood pump driven by ultrasonic liner motors

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Embodiment Construction

[0016] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0017] Such as figure 1 As shown, this example includes: a housing 1, an ultrasonic linear motor 2, a blood bag 3 and a displacement detection module 4, wherein: several ultrasonic linear motors 2 are fixed on the inner side of the housing 1, and are connected with the push plate 13 in the blood bag 3 connection, the housing 1 is sleeved on the outside of the blood bag 3 , and the displacement detection module 4 is arranged on the ultrasonic linear motor 2 .

[0018] The housing 1 includes: an upper cover 5, a side wall 6 and a lower cover 7, wherein: the upper cover 5 and the lower cover 7 are annular structures,...

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Abstract

The invention relates to a pulsator type blood pump driven by ultrasonic liner motors, belonging to the technical field of medical apparatus and comprising a shell, ultrasonic liner motors, a blood bag and displacement detecting modules, wherein a plurality of ultrasonic liner motors are fixed at the inner sides of the periphery of the shell and are connected with push plates in the blood bag; the shell is sheathed at the outer part of the blood bag; the displacement detecting modules are arranged on the ultrasonic liner motors. The ultrasonic liner motor comprises a driving circuit, piezoelectric ceramic plates, elastomers, a sliding block and pretightening screws, wherein the driving circuit is connected with the ceramic plate by leads; the sliding block is movably arranged in the shell, the two piezoelectric ceramic plates are adhered on the elastomer; one end of the elastomer is connected with the pretightening screw, and the other end thereof is vertically contacted with the side surface of the sliding block; and two groups of the piezoelectric ceramic plates, the elastomers and the pretightening screws with same structure are respectively positioned at the two sides of the sliding block. Compared with the prior art, the pulsator type blood pump has compact structure, small size, high transmission efficiency, positioning precision and control precision.

Description

technical field [0001] The invention relates to a device in the technical field of medical instruments, in particular to a pulsating blood pump driven by an ultrasonic linear motor. Background technique [0002] At present, ventricular assist devices can not only be used as a transitional bridge for heart transplantation, but also a method leading to myocardial recovery, and can be applied to the long-term treatment of severe heart failure in the end stage. The blood pump is a key component of a ventricular assist device and is divided into two types: pulsatile and non-pulsatile. Compared with non-pulsatile blood pumps, pulsatile blood pumps are more in line with physiological characteristics because they can provide pulsatile blood flow, which is beneficial to the blood microcirculation perfusion of major organs. The pulsatile blood pumps currently entering the medical market or with mature technology are divided according to the driving mode, mainly including pneumatic, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/10
Inventor 杨明吕雪烽
Owner 心瓴上海医疗科技有限公司
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