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Blood pump favorable for forming physiological laminar flow

A laminar flow and physiological technology, applied in the field of blood pumps, can solve the problems of non-physiological laminar flow, induced thrombus, blood component damage, etc., and achieve the effect of reducing the possibility of blood component damage and thrombus occurrence

Inactive Publication Date: 2020-02-25
张旦
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  • Summary
  • 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 forms the opposite laminar flow state after being pumped by the pump body (that is, the flow velocity of the surrounding blood flow Greater than the flow velocity of the middle blood flow), because it does not conform to the physiological laminar flow, it is very easy to cause blood component damage and induce thrombus in the subsequent flow process

Method used

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  • Blood pump favorable for forming physiological laminar flow
  • Blood pump favorable for forming physiological laminar flow
  • Blood pump favorable for forming physiological laminar flow

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Embodiment Construction

[0021] 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.

[0022] 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 a blood pump that is conducive to the formation of physiological laminar flow, including a sleeve 1, a rotor disposed in the sleeve 1, and a rotor disposed outside the sleeve 1. The driving device for driving the rotor to rotate, the rotor includes a rotor cylinder 21 coaxially arranged with the sleeve 1 and rotor blades 22 fixed on the inner wall of the rotor cylinder 21, the middle part of the rotor forms a hollow blood flow ...

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Abstract

The invention relates to the field of medical instruments, and particularly discloses a blood pump favorable for forming physiological laminar flow. The blood pump comprises a sleeve, a rotor arrangedin the sleeve and a driving device arranged outside the sleeve and used for driving the rotor to rotate; the rotor comprises a rotor cylinder which is coaxial with the sleeve and rotor blades fixed on the inner wall of the rotor cylinder; a hollow blood flow channel is formed in the middle of the rotor; a drainage channel is arranged in the sleeve, is positioned on the rear side of the rotor, gradually narrows along the blood flow direction and is used for draining the peripheral blood flow to the middle blood flow. Blood flowing out of the drainage channel can recover to a normal laminar flow state, and the possibility of blood component damage and thrombus generation in the subsequent flowing process is reduced effectively.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a blood pump which is beneficial for forming physiological laminar flow. Background technique [0002] Blood pump, also known as blood circulation device, 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 fl...

Claims

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Application Information

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IPC IPC(8): A61M1/10
CPCA61M2206/11A61M60/205A61M60/40
Inventor 张旦彭博唐静
Owner 张旦
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