Guide extension catheter

Patent metadata

Field	Value
Publication number	US-10537709-B2
Application number	US-201715787678-A
Country	US
Kind code	B2
Filing date	Oct 18, 2017
Priority date	Oct 18, 2016
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a guide extension catheter. The guide extension catheter may include a proximal member having a proximal end, a distal end, and a proximal diameter. The guide extension catheter may additionally include a collar member attached to an extension portion of the proximal member, where the extension portion may be located at the distal end of the proximal member. The extension portion may allow a delivery device to be inserted through the guide extension catheter to extend along a surface of the extension portion and align with a lumen of a distal sheath of the guide extension catheter.

First claim

What is claimed is:

1. A medical treatment delivery system, the system comprising:
a delivery device comprising a nose extending proximally from a distal end of the delivery device and a medical device location extending proximal from a proximal end of the nose, wherein the nose has a distal end with a length extending between the proximal end and the distal end of the nose;
a guide extension catheter comprising:
a proximal member having a proximal outer diameter, a proximal portion, and an extension portion extending from a distal end of the proximal portion to a distal end of the proximal member; and
a distal sheath member axially fixed with respect to the proximal member and extending distally of the proximal member, the distal sheath member having a lumen and a distal outer diameter larger than the proximal outer diameter; and

wherein the nose:
has a distal taper that extends a greater distance than a length of the extension portion from the distal end of the proximal portion to the distal end of the proximal member; and
is configured to track a guide wire extending through the lumen of the distal sheath member and align the medical device location of the delivery device with the lumen of the distal sheath member prior to the medical device location of the delivery device advancing to the extension portion of the proximal member.

2. The system of claim 1 , wherein the length of the nose is greater than the length of the extension portion.

3. The system of claim 1 , wherein the length of the extension portion is less than 3.5 millimeters.

4. The system of claim 1 , wherein the delivery device is a stent delivery catheter and the medical device location is configured to receive a stent.

5. The system of claim 1 , wherein the delivery device is a balloon catheter and the medical device location includes a balloon.

6. The system of claim 1 , wherein the guide extension catheter comprises a collar attached to the proximal member and the distal sheath member.

Assignees

• Boston Scient Scimed Inc

Inventors

• Fuller Jeffrey Steven
• Yoon Soo-Young
• Stefanich Louis Warner
• Uschold John E

Classifications

• A61M2025/0004

  having two or more concentrically arranged tubes for forming a concentric catheter system · CPC title

• A61M25/0108

  using radio-opaque or ultrasound markers · CPC title

• A61M2025/0175

  having telescopic features, interengaging nestable members movable in relations to one another · CPC title

• A61M25/0045

  multi-layered, e.g. coated (coating materials A61L29/08) · CPC title

• A61M25/0014

  Connecting a tube to a hub · CPC title