Body fluid trap anlyte sensor

• US 20040138544A1
• Filed: 02/27/2003
• Published: 07/15/2004
• Est. Priority Date: 01/13/2003
• Status: Abandoned Application

• Current Assignee: Konamite Limited
• Original Assignee: Konamite Limited
• Inventors: Neinast, Mark, Sass, Richard G., Ward, W. Kenneth, Anderson, Ellen, Jansen, Lawrence B.
• Application Number:
  US10/375,891
• Publication Number:
  US 20040138544A1
• Time in Patent Office: Days
• US Class Current: 600/348
• CPC Class Codes: A61B 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• 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 5/15113 Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
• CPC Class Codes: A61B 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing
• CPC Class Codes: A61B 5/15163 Characterized by propelling the piercing element in an axial direction relative to the disc
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood
• CPC Class Codes: A61B 5/6848 Needles

Abstract

A rapid response, single use analyte sensor, adapted to measure an analyte concentration in body fluid. The sensor includes a lancet and a body fluid trapping structure, adapted to trap body fluid on the skin. An electrochemical analyte measurement system measures the analyte concentration in the body fluid that is trapped on the surface of the skin, by the body fluid trapping structure. In one preferred embodiment, the body fluid trapping structure defines an interior volume of only 30 nanoliters of body fluid.

Claims

1. A rapid response, single use analyte sensor, adapted to measure an analyte concentration in body fluid of a patient having skin having an outer surface, said sensor comprising:

(a) a lancet;

(b) a body fluid trapping structure, adapted to trap body fluid on said skin outer surface;

(c) an electrochemical analyte measurement system adapted to measure an analyte concentration in body fluid that is trapped on said surface of said skin, by said body fluid trapping structure.

2. The analyte sensor of claim 1, wherein said body fluid trapping structure defines an interior volume of less than 100 nanoliters.

3. The analyte sensor of claim 1, wherein said body fluid trapping structure defines an interior volume of about 30 nanoliters.

4. The analyte sensor of claim 1, wherein said body fluid trapping member is more specifically adapted to trap blood.

5. A method of measuring the concentration of an analyte in the body fluid of a patient having skin having an outer surface, said method comprising:

(a) providing a rapid response, single use analyte sensor, adapted to measure an analyte concentration, said sensor comprising;

(i) a lancet;

(ii) a body fluid trapping structure, adapted to trap body fluid on said skin outer surface;

(iii) an electrochemical analyte measurement system adapted to measure an analyte concentration in body fluid that is trapped on said surface of said skin, by said body fluid trapping structure

(b) puncturing said skin with said lancet and withdrawing said lancet from said skin, thereby permitting body fluid to flow into said body fluid trapping structure;

(c) using said electrochemical analyte measurement system to measure said analyte concentration in said body fluid.

6. The method of claim 5, wherein said body fluid trapping structure defines an interior volume of less than 100 nanoliters.

7. The method of claim 5, wherein said body fluid trapping structure defines an interior volume of about 30 nanoliters.

8. The method of claim 5, wherein said body fluid trapping structure is blood.