Device for channeling fluid and methods of use

• US 20090054746A1
• Filed: 09/30/2005
• Published: 02/26/2009
• Est. Priority Date: 09/30/2005
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Cho, Hyun
• Granted Patent: US 8,880,138 B2
• Time in Patent Office: Days
• US Class Current: 600/316
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150343 Collection vessels for collecting blood samples from the skin surface, e.g. test tubes, cuvettes sampling from within body cavities A61B5/150015, A61B5/150045
• CPC Class Codes: A61B 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• CPC Class Codes: A61B 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/151 Devices specially adapted for taking samples of capillary blood, e.g. by lancets , needles or blades
• CPC Class Codes: A61B 5/4839 combined with drug delivery

Abstract

Method and apparatus for channeling fluid away from an insertion site having a channel guiding the fluid flow from the insertion site, and a channeling compartment containing absorbent material to wick the fluid such as blood away from the insertion site is provided.

Claims

1. An apparatus, comprising:

a housing having a base portion and a side portion, the side portion including at least one compartment, the base portion including an opening positioned to substantially surround an insertion site on the skin of a patient, said compartment configured to draw a fluid substantially from around the insertion site.

2. The apparatus of claim 1, further including an absorbent material positioned substantially within said compartment.

3. The apparatus of claim 2 wherein said absorbent material draws the fluid from away the insertion site.

4. The apparatus of claim 2 wherein the absorbent material includes one or more of polyester, nylon, cellulose, cellulose derivative, nitrocellulose, an anti-bacterial agent or anti-fungal agent

5. The apparatus of claim 2 wherein the absorbent material is in fluid contact with the fluid substantially surrounding the insertion site, so as to draw the fluid away from the insertion site.

6. The apparatus of claim 1 further including at least a portion of a sensor adapted to be placed under the skin of the patient at the insertion site.

7. The apparatus of claim 6 wherein the sensor is an electrochemical sensor

8. The apparatus of claim 6, wherein the sensor is a glucose sensor

9. The apparatus of claim 6, wherein the at least a portion of the sensor is in fluid contact with biological fluid of the patient.

10. The apparatus of claim 1 further including a cannula of an infusion device, where at least a portion of the sensor is positioned under the skin of the patient, said insertion site of the cannula substantially corresponding to the insertion site of the sensor on the skin.

11. The apparatus of claim 10 wherein the infusion device includes an insulin pump.

12. An apparatus, comprising:

a housing comprising a compartment, the housing including an opening positioned to substantially surround an insertion site on the skin of a patient; and

an absorbent material provided substantially within said compartment.

13. The apparatus of claim 12, wherein said absorbent material is configured to draw the fluid away from the insertion site.

14. The apparatus of claim 12 wherein the absorbent material includes one of polyester, nylon, cellulose, cellulose derivative, nitrocellulose, an anti-bacterial agent or anti-fungal agent

15. The apparatus of claim 12 further including a sensor with at least a portion of the sensor provided under the skin of the patient, said insertion site substantially corresponding to a transcutaneous location of the sensor on the skin.

16. The apparatus of claim 15 wherein the sensor includes an electrochemical sensor, a first end of the sensor adapted to be placed in fluid contact with an interstitial fluid of the patient.

17. The apparatus of claim 12 further including a cannula of an infusion device provided at a cannula insertion site, said cannula insertion site substantially corresponding to the insertion site of the sensor on the skin.

18. A method, comprising:

positioning at least a portion of an analyte sensor, a cannula or both an analyte sensor and a cannula at an insertion site on a skin of a patient; and

drawing a fluid substantially away from the insertion site of the patient.

19. The method of claim 18, further including the step of contacting an absorbent material with said fluid to draw said fluid substantially away from the insertion site.

20. The method of claim 18 wherein said absorbent material includes one or more of polyester, nylon, cellulose, cellulose derivative, nitrocellulose, an anti-bacterial agent or anti-fungal agent

21. The method of claim 18 wherein said fluid is one or more of an interstitial fluid or blood.

22. An apparatus, comprising:

an analyte sensor; and

a base for retaining a transmitter in electrical contact with the analyte sensor, the base comprising at least one compartment for retaining biological fluid.

23. The apparatus of claim 22 wherein the at least one compartment comprises absorbent material.

24. The apparatus of claim 22 wherein the at least one compartment comprises an agent to at least inhibit growth of harmful organisms.

25. The apparatus of claim 22 wherein the base comprises a first section and a second section, the second section further including the at least one compartment.

26. The apparatus of claim 25 wherein the second section is substantially transverse to the first section.

27. The apparatus of claim 22 wherein the base is attachable to the skin of a subject.

28. A system, comprising:

a housing comprising a compartment, the housing including an opening positioned to substantially surround an insertion site on the skin of a patient;

an absorbent material provided substantially within said compartment;

a sensor substantially located at the insertion site; and

a transmitter unit coupled to the housing, and electrically coupled to the sensor.

29. An insertion kit, comprising:

a housing comprising a compartment, the housing including an opening positioned to substantially surround an insertion site on the skin of a patient;

an absorbent material provided substantially within said compartment;

a sensor; and

an introducer coupled to the sensor configured to place the sensor at the insertion site on the skin of the patient so that at least a portion of the sensor is placed under the patient'"'"'s skin.