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Internal support for human body lumen with nesting type structure

A human tube and stent technology, which is used in stents, prostheses, medical science, etc., can solve the problems of poor traversal ability of complex lesions and high probability of vascular restenosis, and achieves delay in endothelialization, wide area and good support. effect of action

Active Publication Date: 2011-03-09
MICROPORT NEUROTECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a human body intraluminal stent with a nested structure, so as to overcome the defects of the existing stents such as poor ability to pass through complex lesions, high probability of restenosis of blood vessels, etc.

Method used

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  • Internal support for human body lumen with nesting type structure
  • Internal support for human body lumen with nesting type structure
  • Internal support for human body lumen with nesting type structure

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Embodiment Construction

[0019] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] Such as Figure 1~4 As shown, the human intraluminal stent with nested structure of the present invention is composed of several stent rods connected together, and the whole stent is nested between adjacent stent rods 1 when crimping.

[0021] The support rods 1 are provided with segments 2 arranged in a staggered pattern of concavities and convexities, and the segments 2 on adjacent support rods 1 are engaged with each other when they are crimped.

[0022] figure 1 As an embodiment of the present invention, the corresponding segments on the adjacent support rods are arranged in a concave-convex staggered manner, that is, the segment 2' at a certain position on the support rod 1 is concave, and the corresponding position on the adjacent support rod 1' Segment 2" is a protrusion. The depression of segment 2' on two adjacent support r...

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Abstract

The invention discloses a human body lumen internal support provided with an embedded structure, which is formed by connection of a plurality of support rods. The human body lumen internal support is characterized in that adjacent support rods are embedded into each other when the whole support is pressed and held. The adjacent support rods can be meshed with each other and embedded into each other when the support is pressed and held through improvement of the human body lumen internal support, so that small pressing and holding diameter can be guaranteed, and the support can more easily arrive at and pass through complex pathological positions. Compared with a general straight wave pole, the contact area of the embedded support and a pathological blood vessel is wider after the embeddedsupport is unfolded, so that the human body lumen internal support can effectively support the narrow blood vessel well.

Description

technical field [0001] The invention belongs to the technical field of minimally invasive medical devices, and in particular relates to a stent in a human body lumen with a nested structure. Background technique [0002] In recent years, with the continuous popularization and progress of interventional technology, PCI (percutaneous coronary intervention) has been more and more widely used in the treatment of heart disease caused by coronary atherosclerosis. This method is mainly to implant an expandable metal stent at the diseased blood vessel to achieve the therapeutic purpose of propping up the narrowed blood vessel. After the metal stent is implanted into the blood vessel, restenosis is likely to be caused due to the inconsistency of the elastic modulus and other properties of the metal with the blood vessel. It is reported that the restenosis after implantation is about 30%. [0003] At present, the stent is usually designed with a straight rod, and the contour diameter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/82A61L27/54A61F2/91A61F2/915
CPCA61F2250/0068A61F2/91A61F2/915A61F2002/91558A61F2002/91533
Inventor 谢志永罗七一李雨李建军王常春王森郝霞唐智荣
Owner MICROPORT NEUROTECH SHANGHAI
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