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Blood in-vitro circulation auxiliary device

An auxiliary device and external circulation technology, applied in the field of medical devices, can solve the problems of unfavorable physiological laminar flow in the intermediate blood flow rate and large peripheral blood flow velocity, so as to reduce the possibility of blood component destruction and thrombosis, and eliminate excessive flow velocity. low effect

Inactive Publication Date: 2020-02-25
张旦
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the shaftless blood pumps including the above-mentioned patents, since the hollow blood flow channel is set, the blood of the human body flows out of the blood vessel and flows to the rotor. Since the blood flow is driven by the surrounding blades, a surrounding The phenomenon that the blood flow velocity is greater than the middle blood flow velocity. If the middle blood flow velocity is too low, it is not conducive to the formation of physiological laminar flow in the later stage.

Method used

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  • Blood in-vitro circulation auxiliary device

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments; of course, the accompanying drawings are simplified schematic diagrams, and their scales do not constitute patent infringement. Product Restrictions.

[0023] Such as Figure 1 to Figure 3 as shown ( figure 1 The direction of the middle arrow is the direction of blood flow): This embodiment provides an auxiliary device for extracorporeal circulation of blood, including a sleeve 20, a rotor disposed inside the sleeve 20, and a drive device disposed outside the sleeve 20 for driving the rotor to rotate , the rotor includes a rotor cylinder 21 coaxially arranged with the sleeve 20 and rotor blades 22 fixed on the inner wall of the rotor cylinder 21, a hollow blood flow channel 23 is formed in the middle of the rotor; the bloo...

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Abstract

The invention relates to the technical field of medical treatment, and particularly discloses a blood in-vitro circulation auxiliary device which comprises a sleeve, a rotor and a driving device, wherein the rotor is arranged in the sleeve, and the driving device is arranged outside the sleeve and used for driving the rotor to rotate. The rotor comprises a rotor cylinder and rotor blades, the rotor cylinder and the sleeve are coaxially arranged, the rotor blades are fixed onto the inner wall of the rotor cylinder, a hollow blood runner is formed in the middle of the rotor, a circular truncatedcone flow guide cylinder is coaxially arranged in the sleeve and positioned on the front side of the rotor, two ends of the flow guide cylinder are closed, the major diameter end of the flow guide cylinder approaches to the rotor, a flow guide channel is formed between the side wall of the flow guide cylinder and the inner wall of the sleeve, and middle blood flow is drained to peripheral blood flow by the flow guide channel. According to the device, later physiological layer flow can be formed.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a blood extracorporeal circulation assisting device. Background technique [0002] Blood circulation device, also known as blood pump, is mainly used in extracorporeal assisted circulation and heart failure assistance. It is a key technology to replace human heart beating and blood circulation. It is of great significance for the treatment and development of severe emergency and cardiovascular diseases. The early blood pumps were mainly bionic designs, using mechanical or electromagnetic drives to produce periodic volume changes to simulate the beating of the heart; due to the common disadvantages of large volume, complex structures, and short lifespan in blood pumps in this period, most of them were only used as in vitro blood pumps. Auxiliary use. Since then, blood pumps generally use high-speed rotating rotors (centrifugal or axial flow) to drive blood to flow in one direction....

Claims

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Application Information

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IPC IPC(8): A61M1/10
CPCA61M2206/11A61M60/205A61M60/40
Inventor 张旦彭博其他发明人请求不公开姓名
Owner 张旦
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