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Functional artificial system for left ventricle

A left ventricular, functional technology, applied in the field of biomedical engineering, can solve problems such as reduced blood storage and reduced ventricular volume

Pending Publication Date: 2020-10-27
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In patients with diastolic heart failure, the left ventricular ejection function is normal, but the volume of the ventricle decreases during the filling period, and the blood storage decreases, so the traditional ventricular assist system for the purpose of ventricular unloading cannot be applied to such patients

Method used

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  • Functional artificial system for left ventricle
  • Functional artificial system for left ventricle
  • Functional artificial system for left ventricle

Examples

Experimental program
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Effect test

Embodiment 1

[0034] An embodiment of the present invention is described in detail below in conjunction with the accompanying drawings, the structure is shown in Figure 1-Figure 3 .

[0035] In this embodiment, the blood storage cavity (5) is a titanium alloy straight tube with a diameter of 26mm, a thickness of 1.5mm, and a length of 32mm. A soft sealing film (7) of polymer material and a ceramic drive shaft (4) with a diameter of 4 mm; a part of the drive shaft (4) is connected with the drive and control system (1), and the other part is connected with the hemispherical piston (6); The hemispherical piston (6) is a titanium alloy hollow hemisphere with a diameter of 23 mm. The diameter surface of the hemisphere is fixed with the ceramic drive shaft (4) and rotates with the rotation of the drive shaft (under no-load conditions, the elastic sealing film 7 and the hemisphere When the diameter surfaces of the pistons 6 are parallel, the minimum distance between the two is 2mm); the flexible...

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Abstract

The invention relates to a functional artificial system for a left ventricle and belongs to the field of biomedical engineering. The system is composed of a drive and control system, a sensor connecting line, a sensor, a driving shaft, a blood storage chamber, a hemispherical piston and an elastic seal film. The system is applied to treatment and assistance of a diastolic heart failure sufferer; and a system main body is fixed to a cardiac apex position, penetrates through cardiac muscles and extends into the left ventricle, the elastic seal film is used for blocking off blood, the sensor is used for acquiring electrocardiosignals of the sufferer, the signals are transmitted to the drive and control system through the sensor connecting line, and the drive and control system is used for carrying out analysis processing on the electrocardiosignals, then, controlling the driving shaft to rotate, then driving the hemispherical piston to rotate, and thus, controlling the internal volume ofthe blood storage chamber and the contraction and dilatation of a heart of the sufferer to synchronously change. The blood storage of the left ventricle can be increased at diastole, and the volume ejection of the ventricle can be increased at systole.

Description

technical field [0001] The invention relates to a functional artificial left ventricle system, which belongs to the field of biomedical engineering. Background technique [0002] Heart failure, referred to as heart failure, refers to the failure of the venous blood to fully discharge the heart due to cardiac systolic and / or diastolic dysfunction, resulting in blood stasis in the venous system and insufficient blood perfusion in the arterial system, resulting in cardiac circulation syndrome. , This kind of disorder symptom group manifests as pulmonary congestion and vena cava congestion. Diastolic heart failure refers to the reduction of ventricular muscle relaxation and compliance in the case of normal or slightly reduced ventricular systolic function, resulting in incomplete ventricular filling, or ventricular filling disorder due to poor ventricular compliance and restricted expansion . [0003] The current traditional artificial heart, as described in patent CN 10607562...

Claims

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Application Information

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IPC IPC(8): A61M1/12
CPCA61M2230/04A61M2230/005
Inventor 刘有军符珉瑞高斌
Owner BEIJING UNIV OF TECH
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