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Expandable sheath

A sheath, local inflation technology, used in trocars, balloon catheters, medical science, etc.

Active Publication Date: 2017-12-05
EDWARDS LIFESCIENCES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Despite the disclosure of the '387 patent, there remains a need for further improvements in introducer sheaths for use in endovascular systems for implanting valves and other prosthetic devices

Method used

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  • Expandable sheath
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Examples

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Embodiment Construction

[0049] The following description of some examples of inventive concepts should not be used to limit the scope of the claims. From the following description, other examples, features, aspects, implementations, and advantages will be apparent to those skilled in the art. As will be realized, the apparatus and / or method may be in other different and obvious aspects, all without departing from the spirit of the inventive concept. Accordingly, the drawings and descriptions should be regarded as illustrative in nature and not restrictive.

[0050] Certain aspects, advantages, and novel features of embodiments of the disclosure are described herein for purposes of description. The described methods, systems, and devices should in no way be construed as limiting. Rather, the present disclosure relates to all novel and non-obvious features and aspects of the various disclosed embodiments, alone and in various combinations and subcombinations with each other. The disclosed methods, s...

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Abstract

A delivery sheath includes an elastic outer tubular layer and an inner tubular layer having a thick wall portion integrally connected to a thin wall portion. The inner tubular layer can have a compressed or folded condition wherein the thin wall portion folds onto an outer surface of the thick wall portion under urging of the elastic outer tubular layer. When an implant passes therethrough, the outer tubular layer stretches and the inner tubular layer unfolds into an expanded lumen diameter. Once the implant passes, the outer tubular layer again urges the inner tubular layer into the compressed condition with the sheath reassuming its smaller profile. The sheath may also include selectively placed longitudinal rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion and collapse, thereby reducing the push force needed to advance the implant through the sheath's lumen.

Description

technical field [0001] The present application relates to embodiments of sheaths for use with catheter-based techniques for repairing and / or replacing heart valves, and for delivering implants, such as prosthetic valves to the heart via a patient's vasculature. Background technique [0002] Intravascular delivery catheter assemblies are used to implant prosthetic devices, such as artificial valves, at locations within the body where surgical access is not readily accessible or where non-invasive surgical access is desired. For example, aortic, mitral, tricuspid, and / or pulmonary prosthetic valves can be delivered to the treatment site using minimally invasive surgical techniques. [0003] The introducer sheath can be used to safely introduce the delivery device into the patient's vasculature (eg, femoral artery). The introducer sheath generally has an elongated sleeve inserted into the vasculature and a housing containing one or more sealing valves that allow the delivery d...

Claims

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Application Information

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IPC IPC(8): A61M25/06A61F2/24A61F2/958
CPCA61F2/2433A61F2/958A61M25/0662A61M2025/0024A61M25/0023A61F2/011A61F2/962A61M25/0012A61M2025/0035A61M2025/0681A61F2/2436A61F2/2466A61B17/3468A61M25/0068A61M25/008A61F2250/0003A61F2250/0098
Inventor P·周E·布尔曼T·A·盖泽M·G·凡德兹Y·M·朱B·边S·特兰R·D·怀特T·H·李T·T·勒A·K·高德
Owner EDWARDS LIFESCIENCES CORP
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