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Helical hybrid stent

A helical, main stent technology, applied in the field of stents

Inactive Publication Date: 2018-03-20
MEDINOL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Another problem that arises in the art is that, when trying to simplify the stent manufacturing process in order to reduce costs but still prevent manufacturing defects, it is still possible to produce stents with uniform high flexibility and adequate radial support

Method used

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Embodiment Construction

[0036] The present invention provides a new class of endoluminal prosthetic devices defined as helical hybrid stents. In particular, the stents of the present invention comprise a main stent component in the form of a helical tubular structure. The main stent component may be held in its coiled position by a second component that secures the helical coil into the tubular structure. The second component may be one or more of various means of securing the main stent component in tubular form. Said second component may for example be a weld, an interlock and / or a polymer. In one embodiment, the second component comprises a polymer or polymer fibers wrapped around or embedded within the coiled main stent component. The elastic range of the polymer fiber layer must be sufficient to allow expansion and maximum bending of the stent during and after implantation without reaching the elastic limit.

[0037] Stents of the invention may be balloon expandable or self-expanding, or firs...

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Abstract

An expandable helical stent with a securement is provided. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may beformed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristic. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other. The nestling of the undulation of adjacent helical coils contributes to maintaining the tubular shape of the helically coiled stent. In addition, the nestling of helical coils may prevent the polymer layer from sagging at any point between cycles of the helical coils.

Description

[0001] This application is from China, where the applicant is Medino Co., Ltd., the invention name is "Spiral Hybrid Stent", the application date is March 14, 2014, and the application number is 201480014878.9 (the corresponding international application number is PCT / IB2014 / 001121). A divisional application of a patent application. technical field [0002] The present invention relates generally to stents, which are intraluminal implants implanted in a vessel (e.g., blood vessel) in the body to support the vessel and keep the vessel open or to secure or support other endoprostheses within the vessel. prosthetic device. Background technique [0003] Various scaffolds are known in the art. Typically, stents have a generally tubular shape and are expandable from a relatively small unexpanded diameter to a larger expanded diameter. For implantation, a stent is typically mounted on the end of a catheter, wherein the stent remains on the catheter in its small to relatively smal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/88A61F2/91
CPCA61F2/88A61F2/91A61F2220/0058A61F2230/0091A61F2220/0083
Inventor 雅各布·里克特奥列格·魏茨曼伊戈尔·别洛布罗夫
Owner MEDINOL LTD
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