Methods of manufacturing a multi-lumen device

Patent metadata

Field	Value
Publication number	US-9868242-B2
Application number	US-201414262025-A
Country	US
Kind code	B2
Filing date	Apr 25, 2014
Priority date	Apr 25, 2014
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A method and system for manufacturing a multi-lumen device that includes extruding a first layer of material to form an elongate body with a first lumen and a second lumen, the elongate body having a length of at least 100 feet, depositing a mesh layer over the first layer of material along the entire length of the elongate body, and extruding a second layer of material over the mesh layer along at least a portion of the length of the elongate body. The length of at least 100 feet may be considered a first length, the method further comprising cutting the elongate body into a plurality of shortened elongate bodies having a usable length, such as between approximately two feet and approximately six feet.

First claim

What is claimed is:

1. A method for producing a multi-lumen elongate body, the method comprising:
extruding a first layer of material to form an elongate body with a first lumen and a second lumen, the elongate body having a length of at least 100 feet;
depositing a mesh layer over the first layer of material along the entire length of the elongate body; and
extruding a second layer of material over the mesh layer along at least a portion of the length of the elongate body.

2. The method of claim 1 , wherein the length of at least 100 feet is a first length, the method further comprising cutting the elongate body into a plurality of shortened elongate bodies, each shortened elongate body having a second length that is less than the first length.

3. The method of claim 2 , wherein the second length is less than approximately six feet.

4. The method of claim 2 , wherein each of the first lumen and the second lumen is filled with a fluid during extruding the first layer, depositing the mesh layer, and extruding the second layer.

5. The method of claim 4 , wherein the device includes a plurality of second lumens, each of the first lumen and the plurality of second lumens being filled with a fluid during extruding the first layer, depositing the mesh layer, and extruding the second layer.

6. The method of claim 4 , wherein the fluid maintains patency of each of the first lumen and the second lumen during extruding the first layer, depositing the mesh layer, and extruding the second layer.

7. The method of claim 6 , wherein the fluid is a non-compressible liquid.

8. The method of claim 7 , wherein the non-compressible liquid is ones of water, a mixture of water and isopropyl alcohol, silicone fluid, or combination thereof.

9. The method of claim 6 , wherein the fluid is a pressurized gas.

10. The method of claim 9 , wherein the pressurized gas is air, nitrogen, or combination thereof.

11. The method of claim 10 , wherein the pressurized gas has a first pressure during extruding the first layer and a second pressure during depositing the mesh layer and extruding the second layer, the second pressure being greater than the first pressure.

12. The method of claim 2 , wherein the first layer of material defines the first and second lumens.

13. The method of claim 2 , wherein the first lumen is defined by a first tube and the second lumen is defined by a second tube, the first layer of material being extruded over the first and second tubes, the first tube and the second tube each being composed of a different material than the first layer of material of the elongate body.

14. The method of claim 13 , wherein each of the first tube and the second tube is composed of a material having a higher durometer than the first layer of material of the elongate body.

15. The method of claim 14 , wherein the material of each of the first tube and the second tube is at least one of polyimide, nylons, fluorinated ethylene propylene (FEP), and polyether ether ketone (PEEK).

16. The method of claim 1 , wherein:
the elongate body is wound about a first spool after extruding a first layer of material to form an elongate body;
the elongate body is transferred from the first spool to a second spool during depositing a mesh layer over the first layer of material; and
the elongate body is transferred from the second spool to a third spool during extruding a second layer of material over the mesh layer.

17. A method of producing a multi-lumen medical device, the method comprising:
extruding a layer of a first material over a first lumen tube and at least one second lumen tube to form an elongate body having a length of at least 100 feet, a first lumen, and at least one second lumen;
depositing a mesh layer over the layer of first material;
extruding a layer of a second material over the mesh layer, each of the first lumen tube and the at least one second lumen tube at least one of:
being composed of a third material that has a higher durometer than the first material; and
containing a fluid therein.

18. The method of claim 17 , wherein the first lumen contains a removable solid core during extruding a layer of first material, depositing a mesh layer, and extruding a layer of second material, the solid core being removed after extruding a layer of second material.

19. The method of claim 18 , wherein each of the first lumen tube and the at least one second lumen tube is composed of a third material that has a higher durometer than the first material, the third material being at least one of polyimide, nylons, fluorinated ethylene propylene (FEP), polyether ether ketone (PEEK), and ethylene tetrafluoroethylene (ETFE).

20. The method of claim 18 , wherein each of the first lumen tube and the at least one second lumen tube contains a pressurized gas having a first pressure during extruding a layer of a first material and having a second pressure during depositing a mesh layer over the layer of first material and extruding a layer of second material, the first pressure being less than the second pressure.

21. The method of claim 17 , further comprising cutting the elongate body into a plurality of shortened elongate bodies, each shortened elongate body having a second length that is less than approximately six feet.

22. The method of claim 21 , wherein extruding a second layer of material includes extruding a second layer of material over the mesh layer in one or more sections such that the multi-lumen elongate body includes one or more sections of exposed mesh layer, the elongate body being cut in the sections of exposed mesh layer.

Assignees

• Medtronic Ablation Frontiers

Inventors

• Dando Jeremy D
• Horrigan John B
• Jannicke Jeffrey J
• Kapust Michael E
• Purcell Neil

Classifications

• B29C48/267

  Intermediate treatments, e.g. relaxation, annealing or decompression step for the melt (B29C48/76 takes precedence) · CPC title

• B29K2995/0056

  Biocompatible, e.g. biopolymers or bioelastomers · CPC title

• B29C48/92

  Measuring, controlling or regulating · CPC title

• B29C48/0022

  combined with cutting · CPC title

• B29C2948/92923

  Calibration, after-treatment or cooling zone · CPC title