A pulsatile artificial blood pump

A blood pump, artificial technology, applied in the field of medical devices, can solve the problems of affecting blood function, poor stability, destroying plasma, etc., and achieve the effect of good operation effect, long life and good blood circulation.

Active Publication Date: 2020-10-30
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current common structure of centrifugal blood pump is the centrifugal blood pump disclosed in Chinese patent ZL201380053302.9, which adopts a centrifugal blood pump that is light in weight and can provide high torque on the impeller, wherein the impeller is axially and radially centered without any mechanical Bearing, this is a typical centrifugal magnetic levitation heart pump; although this structure reduces mechanical wear and improves the mechanical performance of the impeller, there are still a series of problems in actual use; the impeller of this type of structure lacks a mechanical positioning structure, and the low speed The rotation stability is poor, and its control generally adopts a high speed with high inertia and stability. However, the blade at a high speed will destroy the blood plasma and affect the function of the blood. control method; in addition, the magnetic levitation structure also needs additional energy supply, and its energy consumption is also high
[0006] This shows that above-mentioned existing extracorporeal circulation blood pump still has many defectives, and urgently needs to be improved

Method used

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  • A pulsatile artificial blood pump
  • A pulsatile artificial blood pump
  • A pulsatile artificial blood pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as Figure 1-Figure 2 As shown: this embodiment provides a pulsating artificial blood pump, including a driving device, a planar linkage mechanism and a blood pump. The driving device is connected to the blood pump through a planar linkage mechanism, and the blood pump is used to simulate heart pumping.

[0034]The planar linkage mechanism includes a first crank 1, a second crank 2, a first connecting rod 3, a second connecting rod 4, a crossbeam 5 and a rocker 6, one end of the first crank 1 is connected with a driving device, and one end of the first crank 1 The other end is hinged with one end of the first connecting rod 3, the other end of the first connecting rod 3 and one end of the rocking bar 6 are all hinged with one end of the crossbeam 5, the other end of the rocking bar 6 is fixedly connected with the base 7, and the second crank One end of the second crank 2 is connected to the driving device, the other end of the second crank 2 is hinged to one end of...

Embodiment 2

[0042] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the planar linkage mechanism includes a first crank 1, a second crank 2, a first connecting rod 3, a second connecting rod 4, a beam 5 and a rocker 6, and the first One end of the crank 1 is connected with the driving device through a coupling, the other end of the first crank 1 is hinged with one end of the first connecting rod 3, the other end of the first connecting rod 3 is hinged with one end of the crossbeam 5, and the other end of the rocker 6 is hinged. One end is fixedly connected to the base 7, one end of the second crank 2 is connected to the driving device through a coupling, the other end of the second crank 2 is hinged to one end of the second connecting rod 4, and the other end of the second connecting rod 4 is connected to the beam The other end of 5 is hinged, the middle part of beam 5 is hinged with the push rod 8 of the blood pump, one end of rocker 6 is hinged ...

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Abstract

The invention discloses a pulsating type artificial blood pump which comprises a driving device, a plane connecting rod mechanism and a blood pump. The driving device is connected with the blood pumpthrough the plane connecting rod mechanism, and the blood pump is used for simulating cardiac blood pumping. The pulsating artificial blood pump can generate pulsatile delivery while pumping blood, isused for heart failure assistance, extracorporeal circulation assistance in heart surgery and the like, can truly simulate cardiac blood pumping, enables perfusion of extracorporeal circulation to generate pulse blood flow similar to that generated by human heart pulsations, enables perfusion to conform to human body physiology, improves blood perfusion quantity of tissues in the circulation process, can well complete blood circulation, and reduces cardiac burden. The heart operation is safer, and the operation effect is better.

Description

technical field [0001] The invention relates to the technical field of medical instruments for cardiac surgery, in particular to a pulsating artificial blood pump. Background technique [0002] Blood pumps, also known as artificial heart pumps, can be divided into implantable blood pumps and blood pumps in extracorporeal assistive devices. Implantable blood pumps can be divided into total artificial heart and ventricular assist device according to the auxiliary method. The pump is small in size, complicated in control and high in cost. The blood pump in the extracorporeal auxiliary device is generally large in size, but the cost is low. It is an important part of the extracorporeal circulation device. It can partially or completely replace the pump function of the heart and maintain a good blood circulation throughout the body. It is mainly used for the heart. Vascular surgery, tumor therapy, extracorporeal membrane oxygenation, lung transplantation and other surgical field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/10
CPCA61M60/205
Inventor 刘大伟李明明
Owner YANSHAN UNIV
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