Axial-flow type heart-assist apparatus with heparin coating and hydrophobic protection

A heart-assisted, heparin-coated technology, applied in the field of medical devices, can solve the problems of increasing the difficulty of driving motor manufacturing, increasing cardiac afterload, increasing circulation flow, etc., to reduce the difficulty of design and processing, simplify the device, and avoid blood circulation flow Effect

Pending Publication Date: 2021-01-19
ANHUI TONGLING BIONIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The above-mentioned shaft seal flushing system has obvious disadvantages: one is that it increases the difficulty of manufacturing the drive motor, and the shaft seal flushing hole needs to be connected to an external device through a pipeline to complete the flushing function, so the hole must be pierced through the drive motor, and the hole The diameter of the shaft is only 0.9mm, whi...

Method used

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  • Axial-flow type heart-assist apparatus with heparin coating and hydrophobic protection
  • Axial-flow type heart-assist apparatus with heparin coating and hydrophobic protection

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Embodiment Construction

[0019] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further clarified below in conjunction with specific drawings.

[0020] It should be noted that, in the present invention, when an element is referred to as being "fixed" to another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "left", "right" and similar expressions are for the purpose of illustration only and are not intended to represent the only embodiments.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The ...

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Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an axial flow type heart-assist apparatus with a heparin coating and hydrophobic protection. The heart-assist apparatus comprises a blood flow channel, an axial flow impeller and a driving motor, wherein the driving motor comprises a stator shell which is integrally cylindrical, the stator shell is provided with an accommodating space for arranging a columnar rotor, rotating shafts are arranged at two ends of the columnar rotor, bearings are arranged between shaft bodies at two ends of the rotatingshafts and two ends of the stator shell, and heparin is attached to the surface of the stator shell and the surface of the columnar rotor. According to the heart-assist apparatus, heparin is attachedto the adjacent surfaces of the columnar rotor and the stator shell, so that the thrombus formation is effectively inhibited; and meanwhile, a hydrophobic material is attached to the inner surface ofthe bearing close to a blood outflow opening, and the shaft body of the corresponding rotating shaft, so that blood is effectively prevented from entering the inside of the driving motor.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to an axial-flow heart assist device with heparin coating and hydrophobic protection. Background technique [0002] For patients with left ventricular failure, when drug treatment is ineffective, it is usually necessary to install a left ventricular assist device. The purposes include: 1) waiting for a donor and preparing for heart transplantation; 2) resting the heart and restoring heart function. The current left ventricular assist devices mainly include temporary left ventricular assist devices and long-term left ventricular assist devices; among them, temporary left ventricular assist devices include partial axial flow pumps and balloon pulsation devices, and their main features are percutaneous puncture or incision, Transvascular implantation; the advantage is that it can be implanted quickly and the drive is relatively simple, and it is suitable for emergency rescue of...

Claims

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Application Information

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IPC IPC(8): A61M60/122A61M60/178A61M60/216A61M60/855
Inventor 解启莲王昆刘欢
Owner ANHUI TONGLING BIONIC TECH CO LTD
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