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guide extension catheter

A technology for catheters and tube members, applied in the directions of catheters, guide needles, etc., can solve the problems of delivery, difficulty in inserting interventional devices, etc.

Active Publication Date: 2022-04-29
TELEFLEX LIFE SCI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor alignment between the guide catheter and the ostium of the vessel can make it difficult to deliver the interventional device to the intravascular or distal target site

Method used

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Examples

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specific Embodiment approach

[0018] Minimally invasive cardiac interventions are used worldwide and include uses such as figure 1 Guidewire 112 and catheter 102 are depicted. Guidewire 112 is an elongated, small diameter member designed to guide a vessel to reach a target diseased site or vessel segment. Guidewires come in two basic constructions: a solid steel or Nitinol core wire and a solid core wire wrapped in a smaller coil or braid. Guide catheter 102 is an elongated tubular member defining a main lumen 104 along its length. Guide catheter 102 may be formed, for example, from polyurethane, and may be shaped to facilitate advancement thereof into coronary ostia 106 (or other target area within the patient's body). exist figure 1 In an embodiment, a guide catheter 102 of 6F, 7F, or 8F can be inserted at the femoral artery or the radial artery, where F is an abbreviation for French unit (catheter measurement unit) [unit for measuring catheter diameter (1F=1 / 3mm)] , and advance the guide catheter 10...

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PUM

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Abstract

Guide extension catheter (300) may include an elongated tubular member (320), a push member (322), and a concave track (328). The elongated tubular member may define a lumen and three distinct portions having different diameters. The distal portion (324) can define a first diameter and the proximal portion (326) can define a second diameter that is larger than the first diameter but smaller than the lumen of a guide catheter used with the guide extension catheter, and positioned at The tapered portion (325) between the distal and proximal portions may have a variable diameter. The push member may be eccentrically coupled with respect to and extend proximally from the tubular member to slidably position the tubular member within and partially beyond the distal end of the guide catheter. A concave track forms a transition between the tube member and the push member and defines a partially cylindrical opening to the tube member.

Description

[0001] priority claim [0002] The benefit of priority to U.S. Provisional Patent Application Serial No. 62 / 630,321, filed February 14, 2018, entitled "GUIDE EXTENSION CATHETER," which is hereby incorporated by reference in its entirety, is hereby claimed. technical field [0003] This patent document relates to medical devices. More specifically, but not limitedly, this patent document relates to guide extension catheters for use with guide catheters. Background technique [0004] A guide catheter may be employed to access a blood vessel and deliver an interventional device (eg, a guidewire, balloon catheter, stent, or stent catheter) beyond the distal end of the guide catheter. Poor alignment between the guide catheter and the ostium of the vessel can make it difficult to deliver the interventional device to the intravascular or distal target site. To improve coaxial alignment between the guide catheter and the vessel, narrower guide extension catheters may be used. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M25/06A61M25/00
CPCA61M25/0009A61M25/0012A61M25/0662A61M2025/0004A61M25/0023A61M25/0113A61M25/0053
Inventor 约书亚·布雷尼泽迪安·彼得森马克·文德勒
Owner TELEFLEX LIFE SCI LTD