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Multi-layered medical device for treating a target site and associated method

一种医疗器械、器械的技术，应用在多层式医疗器械领域，能够解决减低输送剖面、拉长度差异、输送剖面大等问题

Inactive Publication Date: 2011-06-15
AGA MEDICAL CORP MS US
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Changing the weave geometry can prevent these gaps, but may result in differences in draw length, as above
[0004] Compared to a single metal layer with additional polyester fabric added to facilitate occlusion, a multilayer device can reduce the delivery profile because the metal filaments in a multilayer device use smaller diameter wires and the diameter of the multilayer Both substantially reduce together when elongated, but in single layer devices the polyester fabric must fold over itself for delivery, resulting in a larger delivery profile

Method used

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  • Multi-layered medical device for treating a target site and associated method
  • Multi-layered medical device for treating a target site and associated method
  • Multi-layered medical device for treating a target site and associated method

Examples

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Embodiment Construction

[0017] Certain, but not all, embodiments of the invention will now be described in more detail with reference to the accompanying drawings. Indeed, the invention may be embodied in many different ways and should not be limited to the embodiments set forth herein; rather, these embodiments are provided to satisfy legal requirements. Like reference numerals refer to like components herein.

[0018] Embodiments of the present invention provide medical devices for treating targets in vivo, such as stent-grafts for eliminating various vascular abnormalities including, for example, aneurysms. The device may also be used as a restrictor or shunt, filter or other type of device placed within the vascular system, and as a graft for lining the lumen of a blood vessel. It should be understood that the use of the term "target" is not intended to be limiting, as the device may be configured to treat any target located anywhere in the body, for example: abnormality, blood vessel, organ, op...

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PUM

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Abstract

Embodiments of the present invention provide medical devices and methods for treating a target site within the body, such as for treating vascular abnormalities. For example, one embodiment provides a stent graft including an occlusive material having a preset, overlapping configuration comprising at least three inverted overlapping layers that are folded over one another. The at least three inverted overlapping layers are configured to be separated and disposed within a catheter in a non-overlapping configuration and return to the preset, overlapping configuration when deployed from the catheter.

Description

technical field [0001] The present invention relates to medical devices, in particular, to a multi-layered medical device for treating internal targets such as abnormal blood vessels. Background technique [0002] Medical devices such as occluders, flow restrictors, shunts and stents / grafts are well known in the art. For example, a single layer of braided wire fabric can be used to form devices for occluding, restricting, or shunting fluid through blood vessels, organs, cavities, and the like. These single-layer devices can be elongated to reduce diameter for ease of delivery through the catheter and resume their memory shape when released from the delivery catheter. [0003] Medical devices, such as multilayer occluders and stent-grafts, have been developed to occlude or eliminate vascular abnormalities. For example, a medical device may include multiple coaxially arranged layers of material configured to substantially slow blood flow and promote thrombus formation. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/06
CPCA61B2017/00592A61F2002/068A61B2017/00526A61F2/06A61B2017/00867A61B17/12109A61B17/12177A61B2017/00623A61B2017/00606A61B17/12118A61F2/2493A61B17/12036A61B17/12172A61F2/07A61B17/12A61L31/14
Inventor M·C·赫德奈D·O·亚当斯
Owner AGA MEDICAL CORP MS US
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