Multi-lumen manometry catheters

• US 20050043649A1
• Filed: 08/30/2002
• Published: 02/24/2005
• Est. Priority Date: 09/06/2001
• Status: Abandoned Application

• Current Assignee: Mediplus Limited
• Original Assignee: Mediplus Limited
• Inventors: Urie, Robert Graham
• Application Number:
  US10/488,800
• Publication Number:
  US 20050043649A1
• Time in Patent Office: Days
• US Class Current: 600/561
• CPC Class Codes: A61B 5/037 Measuring oesophageal pressure
• CPC Class Codes: A61B 5/6853 with a balloon
• CPC Class Codes: A61M 2025/0036 with more than four lumina
• CPC Class Codes: A61M 2025/004 characterized by lumina being arranged circumferentially
• CPC Class Codes: A61M 25/0023 by the form of the lumen, e.g. cross-section, variable diameter

Abstract

A manometry apparatus includes a multi-lumen catheter comprising an extruded flexible tube having a plurality of lumens extending through the body of the tube between a proximal end and a distal end. The flexible tube has a first diameter in a proximal portion extending over a part of its length at the proximal end and a second diameter, larger than the first diameter, in a distal portion extending over a part of its length at the distal end. A plurality of flexible connection tubes are each coupled to a respective one of the plurality of lumens by insertion of the respective flexible connection tube into a corresponding lumen. Connection of the multi-lumen catheter to multiple flexible connection tubes is simplified by extruding the distal end of the catheter to a larger dimension so that the connection tubes can be directly inserted into the catheter lumens.

Claims

1. (original) a manometry catheter comprising an extruded flexible tube having a plurality of lumens extending through the body of the tube between a proximal end and a distal end, the flexible tube having a first diameter in a proximal portion extending over a part of its length at the proximal end and a second diameter, larger than the first diameter, in a distal portion extending over a part of its length at the distal end.

2. The manometry catheter of claim 1 in which the proximal portion extends for a substantial part of the length of the catheter and the distal portion extends for a relatively small part of the length of the catheter.

3. The manometry catheter of claim 2 in which the distal portion has a length in the range 1 to 10 cm.

4. The manometry catheter of claim 2 in which the distal portion has a length in the range 1 to 5 cm.

5. The manometry catheter of claim 1 in which the lateral separation of the individual lumens within the flexible tube is increased within the distal portion.

6. The manometry catheter of claim 1 in which the internal diameter of the individual lumens within the flexible tube is increased within the distal portion.

7. The manometry catheter of claim 1 in which the outside diameter of the proximal portion lies in the range approximately 2 mm to 5 mm and the outside diameter of the distal portion is approximately 8 mm.

8. The manometry catheter of claim 1 in which the inside diameter of lumens located adjacent the periphery of the catheter lies in the range approximately 0.74 mm to 1.5 mm in the proximal portion and approximately 2 mm in the distal portion.

9. The manometry catheter claim 1 further including a lumen opening communicating with each of a plurality of said lumens extending through the catheter walls to an outer surface thereof.

10. The manometry catheter of claim 9 in which each lumen opening is located at a different longitudinal position along the catheter.

11. The manometry catheter of claim 1 in which the distal portion includes a tapered region between the distal end and the proximal portion.

12. A manometry apparatus comprising:

a multi-lumen catheter comprising an extruded flexible tube having a plurality of lumens extending through the body of the tube between a proximal end and a distal end, the flexible tube having a first diameter in a proximal portion extending over a part of its length at the proximal end and a second diameter, larger than the first diameter, in a distal portion extending over a part of its length at the distal end;

a plurality of flexible connection tubes each being coupled to a respective one of the plurality of lumens by insertion of the respective flexible connection tube into a corresponding lumen.