Pulmonary artery stent capable of subsequent dilation and conveyor thereof

A pulmonary artery and conveyor technology, applied in the fields of interventional therapy devices and medical devices, can solve problems such as inability to achieve expansion

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

[0004] As children grow up, the diameter of their pulmonary artery also increases accordingly. Therefore, the pulmonary artery stent with a fixed expansion degree obviously cannot achieve the expansion effect, so it cannot maintain sufficient support for the narrowed pulmonary artery after the diameter increases. force

Method used

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  • Pulmonary artery stent capable of subsequent dilation and conveyor thereof
  • Pulmonary artery stent capable of subsequent dilation and conveyor thereof
  • Pulmonary artery stent capable of subsequent dilation and conveyor thereof

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0034] The pulmonary artery stent in this embodiment is a mesh tubular body, which is made of any metal tube such as cobalt chromium alloy or stainless steel through laser cutting and electrochemical polishing.

[0035] Such as figure 1 As shown, the pulmonary artery stent of the mesh tubular body may include a number of columnar unit segments 10 and connecting rods 20 connecting adjacent unit segments, wherein the cylindrical surface of each unit segment 10 may be connected end to end in a wavy shape A plurality of segmented rods 11 are arranged in a circle along the direction of arrangement, preferably, the length of the connecting rod 20 is shorter than the length of the unit segment 10 .

[0036] Based on the above structure, the expansion of the p...

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Abstract

The invention discloses a pulmonary artery stent capable of subsequent dilation and a conveyor thereof. Dilation of the pulmonary artery stent is realized through cylindrical dilation of each element node and cylindrical dilation of each element node is realized through deformation in wavy expansion form, and as deformation in wavy expansion form is free from structure constraint, the pulmonary artery stent can continue dilating after cylindrical dilation of each element node, thus ensuring the pulmonary artery stent to realize subsequent dilation along with pulmonary artery diameter to ensure the stenosed pulmonary artery to retain sufficient support force. The pulmonary artery stent of above structure has slight radial retraction and axial retraction. Besides, partial troughs of each element node have larger amplitude and the peaks of the adjacent element nodes at one side of the troughs of the element nodes have large amplitude, thus being capable of shortening the gaps between two adjacent element nodes. Node rods with larger length can be arranged and have larger width to ensure flexible uniform distribution of the pulmonary artery stent.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to the field of interventional therapy devices, and relates to arterial stent technology, in particular to a post-expandable pulmonary artery stent and a transporter thereof. Background technique [0002] Pulmonary stenosis is a common congenital heart disease that severely affects blood flow to the lungs, resulting in insufficient blood and oxygen supply throughout the body. In the prior art, a pulmonary artery stent can be implanted in the pulmonary artery to properly expand the narrowed pulmonary artery, so that the blood flow into the lungs can meet the requirements of systemic blood supply and oxygen supply. [0003] However, the expansion degree of the existing pulmonary artery stents is a fixed value, so there are the following problems for children: [0004] As children grow up, the diameter of their pulmonary artery also increases accordingly. Therefore, the pulmonary artery...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/90A61F2/84
Inventor 孟坚可大年梅奇峰徐荣孙智慧
Owner BEIJING MED ZENITH MEDICAL SCI CORP LTD
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