Heart valve tether and heart valve assembly with same

A technology of heart valves and tethers, applied in the field of medical devices, can solve problems such as no longer applicable and affecting heart recovery, and achieve the effect of reducing time and complexity

Active Publication Date: 2020-04-17
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3. Patients with moderate to severe reflux disease are often accompanied by problems such as ventricle enlargement and heart enlargement. When the prosthetic heart valve is implanted, the reflux disappears. At this time, the heart does not need to pump the original volume of blood, and the space of the ventricle gradually expands. Reduce and return to normal size. At this time, the original length and original tension value of the tether will no longer be suitable for the reduced ventricle, and even affect the recovery of the heart.

Method used

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  • Heart valve tether and heart valve assembly with same

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specific Embodiment approach

[0025] In order to enable those skilled in the art to better understand the technical solution in this application, the technical solution will be clearly and completely described below in conjunction with embodiments of different types of stent end structures. Further, this embodiment is only Some of the embodiments in this application are not all of the embodiments. In the field of interventional medicine, it is usually defined that the end of the instrument near the operator is the proximal end, and the end far from the operator is the distal end. In the present invention, the position near the apex of the heart is the proximal end, and the position close to the heart valve is the distal end. The specific implementation mode of heart valve tether is as follows:

[0026] Such as figure 1 As shown, one end of the heart valve tether 30 is connected to the heart valve 20 implanted in the heart 10, and the other end of the heart valve tether 30 is fixed to the apical spacer 40 ...

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Abstract

The invention discloses a heart valve tether and a heart valve assembly with the same. One end of the heart valve tether is connected with a heart valve implanted into a heart, the other end of the heart valve tether is fixed outside the heart, the heart valve tether is made of an elastic material, and the strain of the elastic material is 6%-12% within the stress range not larger than 20 N. The heart valve tether can adapt to elastic connection required by heart beating, can apply fixed tension to the heart valve according to the change of the length of the tether, prevent the heart valve from falling into the atrium, can adapt to tension with different magnitudes in the heart beating process, and prevent damage to the heart due to the fact that the tension is too large.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a heart valve tether and a heart valve assembly with the same. Background technique [0002] Some known prosthetic heart valves (eg, prosthetic mitral valves) include one or more tethers that extend from the valve to the exterior of the heart and are secured to the heart's outer ventricular wall with epicardial anchors. Through the binding force of the tether, the valve will not be squeezed into the atrium during systole, thereby reducing the risk of blood backflow from the mitral valve into the atrium. [0003] The tether is under tension in the heart, and the tension of the tether is measured by an adjustable force-measuring mechanism to fix the tether at the apex fixation device. In order to ensure that the tension between the prosthetic heart valve and the apex fixation device is maintained at a stable value, a force-measuring handle is used to measure the tension of the tethe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
CPCA61F2/24A61F2/2412
Inventor 姚斌
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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