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Outflow track expandable stent and conveyor thereof

An outflow tract and balloon technology, which is applied in the field of medical devices, can solve problems such as inability to achieve the use effect, failure to fit the anatomical structure of the outflow tract, and difficulty in fixing, so as to shorten operation time, improve stability, and improve radial support strength Effect

Active Publication Date: 2013-05-22
BEIJING MED ZENITH MEDICAL SCI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no stent dedicated to the expansion of the outflow tract. After the surrogate stent is implanted and formed, it cannot fit the special anatomical structure of the outflow tract, and it is difficult to fix it in this part, so that the use effect cannot be achieved.

Method used

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  • Outflow track expandable stent and conveyor thereof
  • Outflow track expandable stent and conveyor thereof
  • Outflow track expandable stent and conveyor thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] figure 1 It is a schematic structural view of the first outflow tract balloon-expandable stent of the present invention, figure 2 for figure 1 Schematic diagram of the expanded structure of the shown stent. figure 1 with figure 2 The shown bracket 10 includes: three columnar main unit sections 1, two columnar subunit sections 2, connecting rods 3 and connecting rods 3'.

[0045] Three columnar main unit sections 1 are axially arranged on one side of the bracket, and the total axial length is greater than or equal to 60% of the total axial length of the bracket, so as to improve the stability of the bracket fixed on the outflow channel. A number of section bars 11 connected end to end in a wavy arrangement surround the cylindrical surface of each main unit section 1 along the arrangement direction. The wave width and wave height of the wavy cylindrical surface of each main unit section 1 are the same. In other applications, the wave width and wave height of the cy...

Embodiment 2

[0054] image 3 It is a schematic structural diagram of the second outflow tract balloon-expandable stent of the present invention, Figure 4 for image 3 Schematic diagram of the expanded structure of the shown stent. image 3 with Figure 4 bracket shown in, with figure 1 with figure 2 The structures of the brackets shown in are basically the same, only the connecting rods are straight, so as to be suitable for situations with different requirements on the flexibility of the brackets.

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Abstract

The invention discloses an outflow track expandable stent and a conveyor thereof. The outflow track expandable stent is in a continuous net structure, wherein the widths of the section rods of main unit sections are the same and larger than those of the section rods of auxiliary unit sections, thus the resistance to deformation of the auxiliary unit sections is relatively small to firstly expand to form a crateriform shape, and the resistance to deformation of the main unit sections is relatively large to later expand to form a columnar shape. Therefore, after expansion, the expandable stent is of a unilateral cone-shaped structure with the crateriform shape and the columnar shape, which conforms to the anatomical structure of an outflow track, thus effectively improving the radial support strength of the stent and the stability for fixing the expandable stent.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an outflow tract balloon expansion stent and a delivery device thereof. Background technique [0002] In the human blood circulation mechanism, hypoxic blood enters the right atrium through the vena cava, and then enters the right ventricle through the tricuspid valve. The contraction of the right ventricle pushes the blood into the pulmonary circulation mechanism through the pulmonary valve. From the left atrium, through the mitral valve to the left ventricle, the left ventricle contracts to discharge blood through the aortic valve into the aorta and return to the systemic circulation. [0003] While the pulmonary valve is developing in children, the conical portion of the heart ball is absorbed into the right ventricular outflow tract (i.e., the infundibulum). If the developmental disorder forms the outflow tract, the ring-shaped muscle hypertrophy or hypertrophic muscle bundles ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/958A61F2/90
Inventor 孟坚可大年梅奇峰徐荣
Owner BEIJING MED ZENITH MEDICAL SCI CORP LTD
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