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Flexible helical stent having intermediate structural feature

A flexible, helical technology for expandable devices

Inactive Publication Date: 2013-05-22
CARDINAL HEALTH SWITZERLAND 515 GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cylindrical shape defines a longitudinal axis

Method used

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  • Flexible helical stent having intermediate structural feature
  • Flexible helical stent having intermediate structural feature
  • Flexible helical stent having intermediate structural feature

Examples

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Embodiment Construction

[0057] The stents of the present invention are very flexible and deliverable, while also providing sufficient radial strength to maintain vessel patency. The stent may be formed in any suitable manner, such as by laser cutting a tube from a suitable material, including cobalt chrome, stainless steel, or nickel titanium. While the coronary flexible stent of the present invention is disclosed to illustrate one embodiment of the invention, those of ordinary skill in the art will appreciate that the disclosed invention is equally applicable to other locations and lumens in the body, such as, for example, blood vessels, Blood vessels and peripheral vessels, pipes, etc.

[0058] According to one aspect of the invention, the flexible stent is designed to be crimped to a reduced diameter and delivered percutaneously through a body lumen to a target site via a delivery catheter. The target site can be, for example, a cardiac artery. Once deployed, the flexible stent is used to mainta...

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Abstract

The present invention relates to tubular stent and drug delivery systems. The stent (1100) has a cylindrical shape defining a longitudinal axis and includes helical section (1108) having of a plurality of longitudinally oriented strut members (1113) and a plurality of circumferentially oriented hinge members (1114) connecting circumferentially adjacent strut members to form a band. The band is wrapped about the longitudinal axis in a substantially helical manner form a plurality of helical windings. The helical section further includes a proximal section (1108a), a distal section (1108b) and an intermediate section (1120), wherein the band forming the proximal and distal sections has members with a first width at coincident points along the band length, and the band forming the intermediate section has members with a second width greater than the first width at coincident points along the band length. The wider width in the intermediate section functionally separates the helical section into two subsections.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 369,940, filed August 2, 2010, which is incorporated herein by reference. technical field [0003] The present invention relates to tissue supported medical devices and drug delivery systems, and more particularly, to expandable devices implanted within a body lumen of a living animal or human to support organs, maintain patency, and / or deliver drugs or agents . Background technique [0004] In the past, permanent or biodegradable devices have been developed for implantation within bodily pathways to maintain the patency of the pathway and / or to locally deliver drugs or agents. These devices are typically introduced percutaneously and delivered transluminally until they are positioned at the desired location. These devices are then expanded either mechanically, such as by a mandrel or balloon positioned inside the device, or by themselves expandin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/915A61F2/91
CPCA61F2/915A61F2002/91516A61F2002/91583A61F2230/0054A61F2250/0036A61F2002/91558A61F2250/0029A61F2/88A61F2002/91508A61F2250/0068A61F2002/91525A61F2250/0018A61F2/82A61F2/90
Inventor V.施勒德
Owner CARDINAL HEALTH SWITZERLAND 515 GMBH