Direct heart-assist device based on artificial muscle network

An artificial muscle, heart-assisted technology, applied in artificial respiration, physical therapy, electrotherapy and other directions, can solve the problems of low horsepower, low energy supply, expensive artificial muscles, etc., to reduce preload overload, reduce injuries, improve Effects of Ventricular Geometry

Inactive Publication Date: 2014-06-18
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This material overcomes the problems of the current carbon nanotubes and electrochemical polymer fiber artificial muscles, which are expensive, low energy supply (battery), low horsepower, and far away from clinical application.

Method used

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  • Direct heart-assist device based on artificial muscle network
  • Direct heart-assist device based on artificial muscle network
  • Direct heart-assist device based on artificial muscle network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] figure 1 The artificial muscle unit (Artifical muscle) is the core of our invention. The main components of the basic artificial muscle unit are composed of Biometal memory alloy, and finally the artificial muscle network is formed.

[0034] In order to allow the artificial muscle net to beat naturally with the natural heartbeat rhythm, the specific design of the present invention is as follows:

[0035] 1. Sinus node cardiac rhythm extraction device. A single electrode is sutured at the sinoatrial node (the sinoatrial node rhythm can also be collected through the lead electrode of the ECG signal), and the electrode or the lead electrode is passed through a weak signal amplifier (refer to the patent application document of the applicant for the ECG amplifier), Extract the real-time sinoatrial node signal, and use a small small signal amplifier circuit (instrument amplifier, filter) to simply amplify it so that it can be input to a microprocessor (single-chip microcomp...

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PUM

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Abstract

The invention relates to a direct heart-assist device based on an artificial muscle network, wherein the artificial muscle network consists of artificial muscle units and is provided with an extractor of atrionector heart rhythm, a contraction and diastole process controller and a current drive device. Each artificial muscle unit is formed by combining a shape memory alloy wire inner-layer spring and a heat-conducting wire, wherein each heat-conducting wire is arranged at the center of the corresponding shape memory alloy wire inner-layer spring, a layer of thin film is arranged outside each shape memory alloy wire inner-layer spring and is used for preventing double-layer springs from mutually locking in a clamping manner, the outmost layer is a pressure spring with the certain K value and a sealed shell, and the two ends of each shape memory alloy wire inner-layer spring are connected with an inner shape memory alloy wire, thus the shape memory alloy wires are stretched at a normal state and the artificial muscle units are linked to form a network covering outside a heart so as to form the direct heat-assist device based on the artificial muscle network. The current drive device outputs to the shape memory alloy wires of the artificial muscle units.

Description

technical field [0001] The invention relates to a medical device, especially an artificial heart assisting device for cardiothoracic surgery. Background technique [0002] Dilated cardiomyopathy (dilated cardiomyopathy, DCM) is an unknown myocardial disease characterized by dilated cardiac chambers and myocardial systolic dysfunction. It is also one of the main causes of heart failure other than coronary heart disease and hypertension. Its clinical manifestations are characterized by progressive heart failure, arrhythmia, thromboembolism and even sudden death. There is no specific treatment so far, and the prognosis is extremely poor, with a 5-year survival rate of less than 50%. [0003] Heart disease and diseases caused by viruses can weaken the heart muscle and pump less blood. But at this time, the heart still has enough energy to maintain life, but it cannot provide enough blood output during exercise. When the heart muscle weakens or fails to work at all, the only r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61H31/00
Inventor 陈颖武忠展庆波邵毅
Owner NANJING UNIV
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