Multilumen catheter

• US 20040064086A1
• Filed: 12/30/2002
• Published: 04/01/2004
• Est. Priority Date: 03/01/2002
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic-Minimed
• Inventors: Shah, Rajiv, Miller, Michael E., Morris, Mary M., Enegren, Bradley J., Gottlieb, Rebecca, Giron, Victor
• Granted Patent: US 7,500,949 B2
• Time in Patent Office: Days
• US Class Current: 604/43
• CPC Class Codes: A61B 5/028 by thermo-dilution
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: A61B 5/415 the glands, e.g. tonsils, adenoids or thymus
• CPC Class Codes: A61M 2025/0003 having an additional lumen transmitting fluid pressure to the outside for measurement
• CPC Class Codes: A61M 2025/0046 Coatings for improving slidability
• CPC Class Codes: A61M 2230/201 Glucose concentration
• CPC Class Codes: A61M 25/0017 specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
• CPC Class Codes: A61M 25/0023 by the form of the lumen, e.g. cross-section, variable diameter
• 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
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A multilumen catheter having tubings extending into lumens within the catheter. The lumens may be used for blood, drugs or other medicants. The lumens may also be used for sensors. The junction element, external to the patient, connects the tubings to the lumens. The tubings, also external to the patient, connect to infusion members, to which one or more infusion systems may be connected to deliver blood, drugs and other medicants to the patient. A sensor having a sensing element may extend through the sensor lumen and be positioned internal to the patient for physiological parameter sensing. An external portion of the sensor may be connected to associated electronics to provide automatic monitoring of the physiological parameters and automatic delivery and control of the infusants. Also, a central line catheter for delivering fluids directly into a main artery or vein near the heart, which contains a first lumen to deliver a fluid through the central line catheter and a second lumen containing a sensor capable indicating a characteristic level in blood. The first lumen delivers the fluid downstream of the sensor to prevent any interference between the fluid delivery and the sensor readings. In other versions, the central line catheter can have additional lumens for additional purposes. In addition, the central line catheter can further include a flush sleeve to remove debris around the sensor.

Claims

1. A multilumen catheter comprising:

a first tubing;

a plurality of lumens disposed within the first tubing;

a plurality of second tubings; and

a junction element maintaining a connection between the plurality of lumens and the plurality of second tubings.

2. The multilumen catheter of claim 1, further comprising insertion pieces for attachment to the plurality of second tubings.

3. The multilumen catheter of claim 1, wherein the plurality of lumens are extruded from the first tubing.

4. The multilumen catheter of claim 1, further comprising a lubricious coating on the first tubing.

5. The multilumen catheter of claim 4, wherein the lubricious coating is siloxane.

6. The multilumen catheter of claim 1, wherein the plurality of second tubings comprise a first infusant tubing, a second infusant tubing and a sensor tubing.

7. The multilumen catheter of claim 6, wherein the plurality of lumens comprise a first infusant lumen, a second infusant lumen and a sensor lumen.

8. The multilumen catheter of claim 7, wherein the first infusant tubing extends into the first infusant lumen, the second infusant tubing extends into the second infusant lumen and the sensor tubing extends into the sensor lumen.

9. The multilumen catheter of claim 7, wherein the first infusant lumen and the second infusant lumen exit the first tubing at the same distance along the length of the first tubing.

10. The multilumen catheter of claim 7, wherein the first infusant lumen and the second infusant lumen exit the first tubing at different distances along the length of the first tubing.

11. The multilumen catheter of claim 8, wherein a sensor lead extends through the sensor tubing and the sensor lumen.

12. The multilumen catheter of claim 11, wherein the sensor lead comprises a sensing element.

13. The multilumen catheter of claim 11, wherein the sensing element is an analyte sensor.

14. The multilumen catheter of claim 11, wherein the sensing element is a therapy sensor.

15. The multilumen catheter of claim 12, wherein the sensor lead is positioned distal to the first tubing.

16. The multilumen catheter of claim 12, wherein the sensor lead is positioned proximal to the first tubing.

17. The multilumen catheter of claim 8, further comprising infusion members connected to the first tubing and the second tubing.

18. The multilumen catheter of claim 17, wherein the infusion members comprise injection sites.

19. The multilumen catheter of claim 1, wherein the at least one second tubing extends into the at least one lumen.

20. The multilumen catheter of claim 1, wherein the multilumen catheter is a Swan-Ganz catheter.

21. The multilumen catheter of claim 1, wherein the multilumen catheter is a Peripherally Inserted Central Catheter.

22. A method for using a multilumen catheter comprising:

inserting a distal end of the multilumen catheter into a patient;

affixing an external, proximal end of the multilumen catheter to the patient;

affixing infusion members to the external, proximal end of the multilumen catheter;

affixing electronic elements to the external, proximal end of the multilumen catheter;

automatically monitoring a parameter using a sensor located at the distal end of the multilumen catheter and the electronic elements at the external proximal end of the multilumen catheter; and

treating the patient in response to the monitoring using the infusion members.

23. The method for using a multilumen catheter according to claim 22, wherein automatically monitoring a parameter comprises automatically monitoring a physiological parameter.

24. A multilumen catheter comprising:

a first lumen having a contour; and

a plurality of second lumens having contours complementary to the first lumen,

wherein the contour of the first lumen and the contours of the plurality of second lumens maximize an inner volume of the first lumen and an inner volume of the plurality of the second lumens and minimize an outer dimension of the first lumen and an outer dimension of the plurality of the second lumens.

25. The multilumen catheter of claim 24, wherein one of the plurality of second lumens is shaped to provide a path for a guide wire.

26. The multilumen catheter of claim 24, wherein the first lumen is used for a sensor lead and at least one of the plurality of second lumens is used for drug delivery.

27. The multilumen catheter of claim 24, further comprising:

a first tubing connected to the first lumen;

a plurality of second tubings connected to the plurality of second lumens;

infusion sources connected to the plurality of second tubings; and

a containment element surrounding the first tubing and the plurality of second tubings for maintaining the position of the first tubing and the plurality of second tubings.

28. A central line catheter for delivering fluids directly into a patient'"'"'s body comprising:

a first lumen to deliver a fluid through the central line catheter; and

a second lumen containing a sensor capable of indicating a characteristic level in the patient'"'"'s body.

29. The central line catheter according to claim 28, further comprising at least one additional lumen for delivering at least one other fluid.

30. The central line catheter according to claim 28, further comprising at least one additional lumen for collecting a sample from the patient'"'"'s body.

31. The central line catheter according to claim 28, further comprising a flush sleeve to remove debris around the sensor.

32. The central line catheter according to claim 28, wherein the first lumen delivers the fluid downstream of the sensor.

33. The central line catheter according to claim 28, wherein the sensor is an analyte sensor.

34. The central line catheter according to claim 33, wherein the analyte is glucose.

35. The central line catheter according to claim 28, wherein the sensor is a therapy sensor.

36. A system for delivering and monitoring a condition in an intensive care unit, the system comprising:

a central line catheter comprising a first lumen to deliver fluid and a second lumen containing a sensor capable of indicating a characteristic level in blood;

an infusion device for delivering fluid through the first lumen; and

a monitoring device for displaying readings obtained by the sensor.

37. A single lumen catheter comprising:

a first tubing;

a lumen disposed within the first tubing; and

a sensor disposed within the lumen,

wherein the sensor is disposed in a patient percutaneously.

38. The single lumen catheter of claim 37, further comprising:

a junction element connected to the first tubing; and

a sensor tubing connected to the lumen.