Method for manufacturing a catheter with at least one high-pressure lumen

• US 5,713,851 A
• Filed: 12/14/1995
• Issued: 02/03/1998
• Est. Priority Date: 07/05/1993
• Status: Expired due to Term

• Current Assignee: Cordis Corporation (Cardinal Health, Inc.)
• Original Assignee: Cordis Corporation (Cardinal Health, Inc.)
• Inventors: Noppert, Tiemen, Boudewijn, Alexander Christiaan
• Primary Examiner(s): Buiz, Michael Powell
• Assistant Examiner(s): GRING, NOELLE K
• Application Number:
  US08/574,584
• Time in Patent Office: 782 Days
• Field of Search: 604/264, 604/35, 604/43, 604/38, 604/44, 604/45, 604/266, 604/267, 604/269, 604/280, 604/53, 604/282, 606/159, 606/170, 128/658
• US Class Current: 604/35
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• CPC Class Codes: A61M 25/0012 with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils

Abstract

A method of manufacturing a catheter which comprises a pair of separate lumens defining a higher pressure lumen and a lower pressure lumen, plus a side opening positioned adjacent the distal end of the catheter and communicating with the lower pressure lumen. A relatively thin tube defines the higher pressure lumen. One incorporates the relatively thin tube into a lumen of a relatively thick tube, followed by forming of the distal end of the high pressure lumen to curve rearwardly to form a proximally extending section having a proximal end. One then forms the side opening at a position adjacent the proximal end of the proximally extending section. The relatively thin tube may carry fibrous reinforcement to facilitate its use in defining the higher pressure lumen.

Claims

1. The method of manufacturing a catheter which comprises a pair of separate lumens defining a higher pressure lumen and a lower pressure lumen, and further defining a side opening adjacent the distal end of said catheter, which side opening communicates with the lower pressure lumen, said higher pressure lumen extending distally of said side opening and curving rearwardly again to define a jet nozzle positioned adjacent said side opening to direct fluids from the higher pressure lumen across said side opening into the lower pressure lumen, comprising the steps of:

providing a relatively think flexible tube which carries a tube of reinforcing fibers for strength increase to define the higher pressure lumen;

extruding a multiple-lumen, relatively thick tube having a distal end about said thin, flexible tube;

causing the distal end of the high pressure lumen to curve rearwardly to form a proximally extending section having a proximal end; and

forming said side opening at a position adjacent the proximal end of said proximally extending section through said relatively thick tube so that the side opening communicates with an open lumen of the relatively thick tube.

2. The method of claim 1 in which said relatively thin tube defines a distal end which comprises a jet nozzle.

3. The method of claim 1 in which said reinforcing fibers are made of plastic and are helically wound with said thin tube during manufacture of said thin tube.

4. The method of claim 1 in which said relatively thin tube carries a tubular layer of braided metal fibers for strength increase.

5. The method of claim 1 in which said relatively thin tube is of substantially the length of said relatively thick tube.

6. The method of manufacturing a catheter which comprises a pair of separate lumens defining a higher pressure lumen and a lower pressure lumen, and further defining a side opening adjacent the distal end of said catheter, which side opening communicates with the lower pressure lumen, said higher pressure lumen extending distally of said side opening and curving rearwardly again to define a jet nozzle positioned adjacent said side opening to direct fluids from the higher pressure lumen across said side opening into the lower pressure lumen, comprising the steps of:

providing a relatively think flexible tube which carries a tube of reinforcing fibers for strength increase to define the higher pressure lumen;

incorporating said relatively thin tube into at least most of the length of one lumen of a relatively thick tube having a distal end;

said one lumen having at least twice the diameter of said relatively thin tube;

causing the distal end of the thin, flexible tube to curve rearwardly to form a proximally extending section having a proximal end; and

forming said side opening at a position adjacent the proximal end of said proximally extending section so that the side opening communicates with the one lumen of the relatively thick tube.

7. The method of claim 6 in which said relatively thin tube defines a distal end which comprises a jet nozzle.

8. The method of claim 6 in which said reinforcing fibers are made of plastic and are helically wound with said thin tube during manufacture of said thin tube.

9. The method of claim 6 in which said relatively thin tube carries a tubular layer of braided metal fibers for strength increase.

10. The method of claim 6 in which said relatively thin tube is of substantially the length of said relatively thick tube.

11. The method of manufacturing a catheter which comprises a pair of separate lumens defining a higher pressure lumen and a lower pressure lumen, and further defining a side opening positioned adjacent the distal end of said catheter, which side opening communicates with the lower pressure lumen, said higher pressure lumen extending distally of said side opening and curving rearwardly again to define a jet nozzle positioned adjacent said side opening to direct fluids from the higher pressure lumen across said side opening into the lower pressure lumen, comprising the steps of:

providing a relatively thin, flexible tube to define the higher pressure lumen;

incorporating said relatively thin tube into a closely-fitting lumen of a relatively thick, multiple lumen tube having a distal end;

causing the distal end of the relatively thin tube to curve rearwardly to form a proximally extending section having a proximal end; and

forming said side opening at a position adjacent the proximal end of said proximally extending section, said relatively thick tube comprising of series of separate, abutting tubular sections, said tubular sections being secured to each other and to the relatively thin tube carried within said relatively thick tube, said separate, abutting tubular sections being made of flexible materials having differing physical properties.

12. The method of claim 11 in which said relatively thin tube defines a distal end which comprises a nozzle.

13. The method of claim 11 in which said relatively thick tube is formed about said relatively thin tube by extrusion.

14. The method of claim 11 in which said relatively thin tube has reinforcing fibers which are helically wound with said thin tube during manufacture of said thin tube.

15. The method of claim 11 in which said relatively thin tube carries a tubular layer of braided metal fibers for strength increase.

16. The method of claim 11 in which said relatively thin tube is of substantially the length of said relatively thick tube.