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Atrial septal pore-forming scaffold and conveyor thereof

A technology of interatrial septum and conveyor, which is applied in the field of medical equipment, can solve the problem of easy falling off of the bracket, and achieve the effect of not easy falling off and firm fixing

Inactive Publication Date: 2010-12-29
BEIJING MED ZENITH MEDICAL SCI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no special stent for atrial septal ostomy at present, and the substitute stent is easy to fall off, and due to inaccurate positioning, the stent enters the atrium too much along both sides of the axial direction

Method used

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  • Atrial septal pore-forming scaffold and conveyor thereof
  • Atrial septal pore-forming scaffold and conveyor thereof
  • Atrial septal pore-forming scaffold and conveyor thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 It is a schematic diagram of the structure of the first atrial septal ostomy stent of the present invention, figure 2 for figure 1 Schematic diagram of the expanded structure of the shown stent. figure 1 and figure 2 The shown bracket 10 includes: a columnar main unit section 1 , two columnar subunit sections 2 and connecting rods 3 .

[0034] Two columnar sub-unit sections 2 are respectively located on both sides of the bracket 10 along the axial direction, and several section rods 21 arranged end-to-end are connected in a wave shape, surrounding the cylindrical surface constituting each sub-unit section 2 along the arrangement direction. The wave width and wave height of the wavy cylindrical surface of each sub-unit section 2 are the same. In other applications, the wave width and wave height of the cylindrical waves of each sub-unit section 2 may also be different.

[0035] A columnar main unit section 1 is located in the middle of the bracket 10 alon...

Embodiment 2

[0042] image 3 It is a schematic diagram of the structure of the second atrial septal ostomy stent of the present invention, Figure 4 for image 3 Schematic diagram of the expanded structure of the shown stent. image 3 and Figure 4 bracket shown in, with figure 1 and 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 atrial septal pore-forming scaffold and a conveyor thereof. The scaffold is in continuous netted structure; the width of a section rod of a main unit section which is positioned in the middle is larger than that of section rods of secondary unit sections which are positioned on both sides of the scaffold so that deformation resistance of the secondary unit sections on both sides of the scaffold is less; after the scaffold is implanted, both sides of the scaffold are first expanded to form a trumpet shape, and the main unit section in the middle is then expanded to form a column shape, thus the scaffold forms the structure with the column shape in middle and the trumpet shape on both sides. Because a certain effect of 'dog bone' is generated in the process of scaffold expansion, i.e. a process of axial retraction is generated after scaffold expansion, the trumpet shape formed on both sides is just fastened outside a formed pore after retracting slightly when the atrial septal pore-forming scaffold is expanded, and thus the scaffold is accurately positioned, can be firmly fixed in the formed hole and are not easy to fall off to both sides.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an atrial septal ostomy bracket and a transporter 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] As a palliative treatment for complex congenital heart disease, atrial septostomy is to establish communication between the left and right atria of children through interventional methods, so that blood from the left and right atria can mix, improve arterial blood oxygen saturation, improve hypoxemia, a...

Claims

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Application Information

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IPC IPC(8): A61F2/90A61F2/84A61F2/95
Inventor 孟坚可大年梅奇峰徐荣
Owner BEIJING MED ZENITH MEDICAL SCI CORP LTD
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