Unlock instant, AI-driven research and patent intelligence for your innovation.

Kink-resistant expandable sheath

A sheath and frame technology, which is applied in the field of kink-resistant expandable sheaths, can solve problems such as easy kinking of the expandable sheaths

Pending Publication Date: 2021-11-19
EDWARDS LIFESCIENCES CORP
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such sheaths often have complex mechanisms (such as ratchet mechanisms) to maintain the sheath in the expanded configuration once a device with a diameter larger than the sheath's initial diameter is introduced
Existing expandable sheaths are also prone to kinks due to the longitudinal forces that accompany passing the prosthetic device through the sheath, especially when traversing curved vasculature of various radii

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Kink-resistant expandable sheath
  • Kink-resistant expandable sheath
  • Kink-resistant expandable sheath

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0138] Example 1: An expandable sheath for deploying a medical device comprising: a plurality of struts arranged to form an expandable cylindrical frame having proximal and distal ends, an inner surface and an outer surface , and a central axis extending along the length of the frame; wherein the expandable cylindrical frame has a first length and an opposite second length, and wherein, in the first position, at least a portion of the first length and a portion of the second length at least in part substantially the same; wherein the expandable cylindrical frame is movable from a first position to a second position by bending away from the central axis, wherein at the second position at least part of the first length is shortened and at least part of the second length partially elongated; wherein the inner surface of the expandable cylindrical frame defines a lumen configured to receive the medical device; and wherein the expandable cylindrical frame is configured to have a fir...

example 2

[0139] Example 2: Any of the examples herein, specifically the expandable sheath of Example 1, wherein in the second position the portion of the first length and the portion of the second length are positioned along the curved portion of the frame.

example 3

[0140] Example 3: Any of the examples herein, specifically the expandable sheath of Example 1 or 2, wherein the first length is provided on a first portion of the outer diameter of the expandable cylindrical frame and the second length is provided on the expandable On the second portion of the outer diameter of the cylindrical frame, wherein the first portion is circumferentially opposite the second portion of the outer diameter.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
radiusaaaaaaaaaa
thicknessaaaaaaaaaa
elastic modulusaaaaaaaaaa
Login to View More

Abstract

The invention relates to a kink-resistant expandable sheath. Expandable sheaths are disclosed herein. In some aspects, the sheath comprises at least one plurality of struts arranged to form an expandable cylindrical frame such that the formed frame is kink resistant. The disclosed frames are configured to expand from a first diameter d1 in an unexpended position to a second diameter d2 an expanded position upon passage of a medical device, while maintaining the kink resistance. Also disclosed are methods of making the same.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 63 / 024,386, filed May 13, 2020, the contents of which are incorporated herein by reference in their entirety. technical field [0003] The present application relates to expandable introducer sheaths for prosthetic devices such as transcatheter heart valves and methods of making the same. Background technique [0004] Intravascular delivery catheter assemblies are used to implant prosthetic devices, such as prosthetic valves, in locations within the body that are not readily accessible or desired to be accessible without invasive surgery. Prosthetic valves, such as the aortic, mitral, tricuspid, and / or pulmonary valves, can be delivered to the treatment site using minimally invasive surgical techniques. [0005] The delivery device can be safely introduced into the patient's vasculature (eg, femoral artery) using an introducer sheath. The introdu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
CPCA61F2/2433A61F2/2418A61F2/2466A61M2025/0024A61M25/0023A61M25/005A61M25/0045A61F2/2427A61F2002/9623A61F2/2436A61F2/966A61M2025/0059
Inventor N·古威驰R·希特里特I·艾维纳森
Owner EDWARDS LIFESCIENCES CORP