Catheter

• US 20060129131A1
• Filed: 12/19/2003
• Published: 06/15/2006
• Est. Priority Date: 12/23/2002
• Status: Abandoned Application

• Current Assignee: Pulsion Medical Systems AG
• Original Assignee: Pulsion Medical Systems AG
• Inventors: Muller, Daniel, Pfeiffer, Ulrich J.
• Application Number:
  US10/540,077
• Publication Number:
  US 20060129131A1
• Time in Patent Office: Days
• US Class Current: 604/528
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/028 by thermo-dilution
• CPC Class Codes: A61B 5/6852 Catheters
• CPC Class Codes: A61M 25/0032 characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts

Abstract

Catheter (1), comprising a catheter body (2), the inner volume of which forms a first catheter channel (4), which serves to accommodate a guide wire (15) during the introduction of the catheter into the body of a patient, with at least one separating wall (5), arranged therewithin, which divides off at least one further catheter chamber (6) in the interior. According to the invention, a catheter chamber with the largest possible cross-sectional area with a given external diameter may be provided, whereby the catheter body (2) has a tubular outer wall (3), the cross-sectional area (F2) of the further catheter chamber (6) is smaller than the cross-sectional area (F1) of the first catheter chamber (4) and the further catheter chamber (6) is arranged such as to comprise a wall section which is part of the tubular outer wall (3).

Claims

1. Catheter (1) having a catheter body (2), the interior of which forms a first catheter lumen (4), which serves to accommodate a guide wire (15) during the introduction of the catheter into the body of a patient, having at least one partition (5) disposed in the interior, which divides off at least one further catheter lumen (6) in the interior,

wherein the catheter body (2) has a tubular outer wall (3) and the cross-sectional area (F2) of the further catheter lumen (6) is smaller than the cross-sectional area (F1) of the first catheter lumen (4), and the further catheter lumen (6) is disposed in such a manner that it has a wall section (7) that is part of the tubular outer wall (3).

2. Catheter according to claim 1, wherein the cross-sectional area (F1) of the first catheter lumen (4) and the cross-sectional area (F2) of the further catheter lumen (6) have a common axis of symmetry in the cross-sectional plane, and the quotient of the cross-sectional area (F1) of the first catheter lumen (4) and the cross-sectional area (F2) of the further catheter lumen (6) is greater than the square of the quotients of the width (D1) of the first catheter lumen (4), measured along the common axis of symmetry, and the width (D2) of the further catheter lumen (6), measured along the common axis of symmetry.

3. Catheter according to claim 1, wherein the partition (5) runs in arc shape over at least one section of same.

4. Catheter according to claim 3, wherein the arc-shaped partition (5) has a convex side that faces the first catheter lumen (4), and a concave side that faces the further catheter lumen (6).

5. Catheter according to claim 1, wherein the cross-sectional area (F1) of the first catheter lumen (4) has a rounded sickle shape.

6. Catheter according to claim 1, wherein the cross-sectional area (F2) of the further catheter lumen (6) is round.

7. Catheter according to claim 1, wherein a temperature sensor is disposed in the further catheter lumen (6).

8. Catheter according to claim 7, wherein the temperature sensor is disposed in the vicinity of the catheter tip (9).

9. Catheter according to claim 6, wherein the cross-sectional area of the temperature sensor fills the cross-sectional area of the further catheter lumen (6) by at least four-fifths.

10. Catheter according to claim 7, wherein the cross-sectional area of the temperature sensor fills the cross-sectional area of the further catheter lumen (6) completely.

11. Catheter according to claim 1, wherein an optical fiber sensor is disposed in the further catheter lumen (6).

12. Catheter according to claim 1, wherein the further catheter lumen (6) is open in the region of the catheter tip.

13. Catheter according to claim 1, wherein the further catheter lumen (6) is closed in the region of the catheter tip.

14. Catheter according to claim 1, wherein the catheter body is made from plastic having a Shore hardness of 60D to 85D.

15. Catheter according to claim 14, wherein the plastic is polyurethane.

16. Catheter system according to claim 1, having a guide wire (15), wherein the guide wire (15) has a diameter that amounts to 65% to 95% of the distance (D1) between the partition (5) and the outer wall (3).