Catheter having an expandable lumen and method of manufacture

Patent metadata

Field	Value
Publication number	US-11744986-B2
Application number	US-201916270678-A
Country	US
Kind code	B2
Filing date	Feb 8, 2019
Priority date	Jul 2, 2009
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

A single or multiple lumen catheter is disclosed which includes an expandable lumen. The expandable lumen is movable from a collapsed or sealed configuration to an open or expanded configuration. In the open configuration, the expandable lumen is dimensioned to receive a guidewire or stylet or facilitate the introduction of fluids into a patient.

First claim

The invention claimed is:

1. A method of manufacturing a multi-lumen catheter, the method comprising:
extruding a catheter body having a first lumen and at least one additional lumen, the catheter body being formed of a first material having a first melting temperature;
providing a second material on an inner surface of the first lumen, the second material having a melting temperature greater than the first material;
directing a fluid through the at least one additional lumen to move the first lumen to a collapsed configuration;
melting the first material without melting the second material while the first lumen is in the collapsed configuration; and
cooling the first material to allow the first material to set with the first lumen in the collapsed configuration,
wherein after cooling the first material, the first lumen is configured to receive a guidewire, and
wherein to receive the guidewire, the first lumen is configured to expand.

2. The method according to claim 1 , wherein the at least one additional lumen includes second and third lumens.

3. The method according to claim 2 , wherein extruding the catheter body includes providing a septum between the second and third lumens, the first lumen extending through the septum.

4. The method according to claim 1 , wherein when the first lumen expands to receive the guidewire, a cross-sectional area of the first lumen is increased.

5. The method according to claim 1 , wherein when the first lumen is moved to the collapsed configuration, a cross-sectional area of the first lumen is decreased.

6. The method according to claim 1 , wherein providing the second material on the inner surface of the first lumen comprises providing a layer of the second material on the inner surface of the first lumen.

7. The method according to claim 1 , wherein in the collapsed configuration, the first lumen is substantially sealed.

8. The method according to claim 1 , wherein when the first lumen receives the guidewire, a cross-sectional area of the at least one additional lumen is decreased.

Assignees

• Mozarc Medical Us Llc

Inventors

• Sansoucy Michael

Classifications

• A61M25/0102 Primary

  Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod · CPC title

• A61M25/0009

  Making of catheters or other medical or surgical tubes · CPC title

• A61M25/0026

  Multi-lumen catheters with stationary elements (catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175) · CPC title

• A61M25/09

  Guide wires · CPC title

• B29C48/001

  Combinations of extrusion moulding with other shaping operations · CPC title