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Subintimal reentry catheter with shape controllable balloon

A balloon and catheter technology, which is used in balloon catheters, catheters, medical science, etc., can solve the problem of difficulty in re-entering the true cavity

Active Publication Date: 2018-04-24
BOSTON SCI SCIMED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, re-access to the true lumen and / or recanalization from the subintimal space may be difficult

Method used

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  • Subintimal reentry catheter with shape controllable balloon
  • Subintimal reentry catheter with shape controllable balloon
  • Subintimal reentry catheter with shape controllable balloon

Examples

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Embodiment Construction

[0021] For the following defined terms, unless a different definition is given in the claims or elsewhere in this specification, these definitions shall apply.

[0022] Whether expressly stated or not, all numerical values ​​herein are assumed to be modified by the term "about". The term "about" generally refers to a range of values ​​that one of ordinary skill in the art would consider equivalent (ie, having the same function or result) to the recited value. In many instances, the term "about" may include numbers that are rounded to the nearest significant figure.

[0023] The recitations of numerical ranges by endpoints include all numbers subsumed within that range (eg, 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.80, 4, and 5).

[0024] While certain suitable dimensions, ranges and / or values ​​are disclosed for various components, features and / or specifications, those skilled in the art, having motivated by the present invention, will appreciate that based on those expressly dis...

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PUM

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Abstract

The invention discloses a recanalization catheter for re-entering a blood vessel lumen from a subintimal space. The catheter includes an inflatable balloon mounted on a distal region of the catheter shaft. The catheter shaft includes a guidewire lumen having a distal opening and a lateral opening in a distal region of the catheter shaft proximate the distal opening, and the inflation lumen is in fluid communication with the balloon. The balloon is configured to inflate the subintimal space to a first inflated state to orient the lateral opening toward the lumen of the vessel when the inflation pressure is below a threshold inflation pressure and to a second inflated state when the inflation pressure is above the threshold inflation pressure. The catheter includes means for maintaining the balloon in a first inflated state when the pressure is below a threshold inflation pressure.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application Serial No. 61 / 781,150, filed March 14, 2013, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to devices and methods for recanalizing occluded blood vessels. More particularly, the present invention relates to devices and methods for re-entering the true lumen from the extraluminal or subintimal space of a blood vessel. Background technique [0004] Chronic total occlusion (CTO) is an arterial vessel blockage that blocks blood flow through the vessel, which can occur in both coronary and peripheral arteries. In some cases, it may be difficult or impossible to recanalize a vessel in an antegrade direction with a medical device through a chronic total occlusion. Accordingly, techniques have been developed to create a subintimal pathway (ie, a pathway between the intimal and adventitia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/3207A61M25/10
CPCA61B17/3207A61B2017/22095A61M25/104A61B2017/22044A61B2017/22068A61B2017/22071A61M25/1002A61M2025/0095A61M2025/0197A61M2025/1059A61M2025/1084A61M25/0194
Inventor 王汇隼周普本杰明·冈戴尔丹尼尔·霍恩约翰·陈
Owner BOSTON SCI SCIMED INC