Lancet system including test strips and cassettes for drawing and sampling bodily material

• US 20040138688A1
• Filed: 10/09/2003
• Published: 07/15/2004
• Est. Priority Date: 10/09/2002
• Status: Abandoned Application

• Current Assignee: CSP Technologies Incorporated (AptarGroup Incorporated)
• Original Assignee: CSP Technologies Incorporated (AptarGroup Incorporated)
• Inventors: Giraud, Jean Pierre
• Application Number:
  US10/683,692
• Publication Number:
  US 20040138688A1
• Time in Patent Office: Days
• US Class Current: 606/181
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157 disposable multilayered or laminated electrodes G01N27/307; details of handling chemical test elements G01N33/4875
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150167 Adjustable piercing speed of skin piercing element, e.g. blade, needle, lancet or canula, for example with varying spring force or pneumatic drive
• CPC Class Codes: A61B 5/150175 Adjustment of penetration depth
• CPC Class Codes: A61B 5/150305 Packages specially adapted for piercing devices or blood sampling devices kits for diabetes A61M5/003; packaging in general B65D
• 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 5/150412 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 5/150809 by audible feedback
• CPC Class Codes: A61B 5/150946 Means for varying, regulating, indicating or limiting the speed or time of blood collection
• CPC Class Codes: A61B 5/15146 Devices loaded with multiple lancets simultaneously, e.g. for serial firing without reloading, for example by use of stocking means. multiple simultaneous cutting or piercing A61B5/150977
• CPC Class Codes: A61B 5/6848 Needles

Abstract

A lancet suited for use in drawing blood or other bodily fluid, wherein the lancet is provided with a region where a chemical reagent resides, the chemical reagent including one or more agents that react with at least one constituent of the bodily fluid to ascertain information about the bodily fluid from which it was drawn, the lancet has a body and a head that is provided with a relatively sharp tip for penetrating the skin of the person, the tip is provided with at least one channel or groove in fluid communication with the area where the chemical reagent is positioned, the channel or groove transports the fluid from the tip to the area where the chemical reagent is positioned, the channels extend between the tip of the lancet and the recess, an electroconductive ink is positioned on the lancet wherein the ink is patterned into electrical contacts, part of which extend into the area where the chemical reagent is deposited and a part of which extend to a location away from the area where the chemical reagent is deposited, the chemical reagent positioned on the lancet undergoes a reaction with the bodily fluid that creates an electrical potential between the two ends of the electrical contacts.

Claims

1. A lancet suited for use in drawing blood or other bodily fluid, wherein the lancet is provided with a region where a chemical reagent resides, the chemical reagent including one or more agents that react with at least one constituent of the bodily fluid to ascertain information about the bodily fluid from which it was drawn, the lancet has a body and a head that is provided with a relatively sharp tip for penetrating the skin of the person, the tip is provided with at least one channel or groove in fluid communication with the area where the chemical reagent is positioned, the channel or groove transports the fluid from the tip to the area where the chemical reagent is positioned, the channels extend between the tip of the lancet and the recess, an electroconductive ink is positioned on the lancet wherein the ink is patterned into electrical contacts, part of which extend into the area where the chemical reagent is deposited and a part of which extend to a location away from the area where the chemical reagent is deposited, the chemical reagent positioned on the lancet undergoes a reaction with the bodily fluid that creates an electrical potential between the two ends of the electrical contacts.

2. The lancet of claim 1 wherein the lancet has a pencil-like shape, with the head resembling the conically-shaped pencil point and the body resembling a cylindrical barrel.

3. The lancet of claim 2 wherein the lancet is integrated into a diagnostic test kit in which the lancet is driven out of the recess to penetrate a person'"'"'s skin, draw a sample of a fluid, which by capillary action is transported through the grooves to the area where the reagent is positioned, the lancet is returned to within the protective recess, and wherein a chemical reaction occurs, generating an electrical potential, which is measured by the diagnostic test kit, which then converts the value of the electrical potential.

4. A test strip for use in analyzing a sample drawn from a person, wherein the test strip has a substrate, a through hole where a chemical reagent can be deposited and cured, electrical contacts that extend from where the reagent is positioned to another area on the strip, wherein a wicking region comprises grooves containing a non-compatible ink, the wicking region transports bodily fluid from the end of the strip to the region where the chemical reagent is deposited, the strip has an overlayer of a carrier material.