Reinforced balloon catheter

Patent metadata

Field	Value
Publication number	US-11446474-B2
Application number	US-201916447736-A
Country	US
Kind code	B2
Filing date	Jun 20, 2019
Priority date	Nov 21, 2014
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A balloon catheter is described, having a reinforced, co-axial, duel lumen design. At least one of the lumens is formed of a multilayer, tubular element in which one of the layers functions, in part, to provide radial reinforcement to the tubular element.

First claim

What is claimed is:

1. A balloon catheter comprising:
a balloon attached to a distal portion of a tubular member;
the tubular member having an inflation lumen in communication with the balloon;
an inner guidewire tube having an inner lumen that accommodates a guidewire which passes through and extends distally beyond the inner lumen; and,
a purge passage extending between an interior of the balloon and an exterior of the balloon catheter; wherein a first interior surface of the purge passage is a distal uninflatable portion of the interior of the balloon and a second interior surface of the purge passage is a swellable material surface;
the purge passage having a first open configuration to allow movement of fluid through the purge passage to an exterior of the balloon catheter; and a second closed configuration to prevent movement of fluid through the purge passage.

2. The balloon catheter of claim 1 , wherein the purge passage has an elliptical shape when in the first open configuration.

3. The balloon catheter of claim 1 , wherein when an entirety of the purge passage is closed when in the second closed configuration.

4. The balloon catheter of claim 1 , wherein a particular section of the purge passage is closed when in the second closed configuration.

5. The balloon catheter of claim 1 , wherein the swellable material surface is a hydrophilic material.

6. The balloon catheter of claim 1 , wherein the swellable material surface swells upon exposure to liquid.

7. A balloon catheter comprising:
a balloon attached to a distal portion of a tubular member;
the tubular member having an inflation lumen in communication with the balloon;
an inner guidewire tube having an inner lumen that accommodates a guidewire which passes through and extends distally beyond the inner lumen; and,
a purge passage extending between an interior of the balloon and an exterior of the balloon catheter; wherein a first portion of an interior surface of the purge passage is a distal uninflatable portion of the interior of the balloon and a second portion of the interior surface of the purge passage is a swellable material surface;
the purge passage having a first open configuration to allow movement of fluid through the purge passage to an exterior of the balloon catheter; and a second collapsed configuration to prevent movement of fluid through the purge passage.

8. The balloon catheter of claim 7 , wherein the purge passage has an elliptical shape when in the first open configuration.

9. The balloon catheter of claim 7 , wherein the purge passage has a C or D cross-sectional shape when in the first open configuration.

10. The balloon catheter of claim 7 , wherein the purge passage has a length, and an entire length of the purge passage is collapsed when in the second collapsed configuration.

11. The balloon catheter of claim 7 , wherein only a section of the purge passage is collapsed when in the second collapsed configuration.

12. A balloon catheter comprising:
a balloon attached to a distal portion of a tubular member;
the tubular member having an inflation lumen in communication with the balloon;
an inner guidewire tube having an inner lumen that accommodates a guidewire which passes through and extends distally beyond the inner lumen; and,
a purge passage extending between an interior of the balloon and an exterior of the balloon catheter; wherein an upper interior surface of the purge passage is a distal uninflatable portion of the interior of the balloon and a bottom interior surface of the purge passage is a swellable material surface;
the purge passage having a first open configuration to allow movement of fluid through the purge passage to an exterior of the balloon catheter; and a second swelled configuration to prevent movement of fluid through the purge passage.

13. The balloon catheter of claim 12 , wherein the swellable material surface swells upon exposure to liquid.

14. The balloon catheter of claim 12 , wherein the swellable material surface is hydrophilic.

Assignees

• Microvention Inc
• Micro Vention Inc

Inventors

• Gulachenski Joseph A
• Guyon Roland
• Lei Cathy
• Peralta Nelson
• Wolde-Meskel Tadele Haile
• Corvese Russell

Classifications

• A61M25/005

  with embedded materials for reinforcement, e.g. wires, coils, braids · CPC title

• A61M25/0053

  having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid · CPC title

• A61M25/0045

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

• A61M25/10185 Primary

  Valves · CPC title

• A61M25/1006

  Balloons formed between concentric tubes · CPC title