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Steerable sheath with variable curve span

A width, longitudinal axis technology, applied in the field of electrophysiological catheters, can solve the problem of occupying valuable space in the catheter

Pending Publication Date: 2021-09-17
伯恩森斯韦伯斯特(以色列)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, the inner wall of the multi-lumen tubing takes up valuable space within the catheter

Method used

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  • Steerable sheath with variable curve span
  • Steerable sheath with variable curve span
  • Steerable sheath with variable curve span

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] A shaft assembly comprising: (a) a proximal segment extending distally along a longitudinal axis, the proximal segment including a proximal shaft defining a proximal lumen; (b) a distal a side segment extending distally from the proximal segment, the distal segment comprising a distal shaft defining a tube configured to align with the proximal lumen a distal lumen configured to be biased to flex laterally away from the longitudinal axis into a degree of flexure having a width configured to fit in the cardiovascular anatomy within the channel; and (c) at least one reinforcing member configured to selectively translate along the longitudinal axis, the at least one reinforcing member configured to counteract the Laterally biased and thereby reducing the width of the degree of flexion based on the longitudinal position of the stiffening member relative to the distal section.

Embodiment 2

[0126] According to the shaft assembly of Example 1, the at least one stiffening member is disposed within the proximal lumen and is selectively translatable through the distal lumen.

Embodiment 3

[0128] The shaft assembly of any one or more of embodiments 1-2, the flexure has a width in the range of about 0 mm to about 55 mm.

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Abstract

A steerable sheath with variable curve span. A guiding sheath assembly which has a shaft that is operable to define more than one deflection curvature and defines a lumen to slidably receive a cardiovascular catheter is disclosed by the invention. The guiding sheath assembly includes a proximal section, a distal section, and a stiffener member. The proximal section has a proximal shaft that defines a proximal lumen extending distally along a longitudinal axis to the distal section. The distal section has a distal shaft that defines a distal lumen that is configured to be biased (e.g., resiliently biased) laterally away from the longitudinal axis. The stiffener member is a rigid elongate member, such as an inner tubular member, that is configured to counteract the bias of the distal shaft. Longitudinal movement of the stiffener member relative to the distal section enables the operator to select and set a deflection curvature of the distal section.

Description

[0001] priority [0002] This patent application is a continuation-in-part of U.S. Patent Application 14 / 715,013 entitled "Catheter with Adjustable Deflection", filed on May 18, 2015, and published on November 24, 2016 as U.S. Publication 2016 / 0339207 , the disclosure of which patent application is incorporated herein by reference. Technical field [0003] The present invention relates to electrophysiology (EP) catheters, and in particular to flexible catheters for use with EP catheters for mapping and / or ablation in the heart. Background technique [0004] Leads have been commonly used in medical practice for many years. They are used to stimulate and map electrical activity in the heart, as well as to ablate sites of abnormal electrical activity. [0005] In use, the lead is inserted into a major vein or artery (eg, the femoral artery) and then directed into the heart chamber of interest. Within the heart, the ability to control the precise position and orientation of ...

Claims

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Application Information

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IPC IPC(8): A61M25/00
CPCA61M25/0023A61M25/0026A61M2025/0081A61M25/0102A61M25/0144A61M25/0136A61M25/0147A61B18/1492A61B2018/00351A61B2018/00577A61B2018/00821A61B2218/002A61B5/287A61B5/6855A61B5/062A61B5/0215A61B2505/05A61B2090/065A61M25/0113A61M25/0138A61M2025/0161A61M2025/0177A61M2025/09083
Inventor R·Y-S·唐M·T·斯坦利C·T·贝克勒
Owner 伯恩森斯韦伯斯特(以色列)有限责任公司
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