Integrated lance and strip for analyte measurement

• US 7,169,117 B2
• Filed: 09/20/2005
• Issued: 01/30/2007
• Est. Priority Date: 03/28/2003
• Status: Expired due to Term

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Inventors: Allen, John J.
• Primary Examiner(s): Hindenburg; Max F.
• Assistant Examiner(s): SZMAL, BRIAN SCOTT
• Application Number:
  US11/231,130
• Publication Number:
  US 20060074351A1
• Time in Patent Office: 497 Days
• Field of Search: 600/309, 600/365, 600/368, 600/573, 600/576, 600/583, 600/584, 606181-183, 422/50, 422/55, 422/100, 435/4, 435/14, 204/403.01, 738/640.1, 738/640.2
• US Class Current: 600/584
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61B 17/32093 for skin incisions
• 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 5/02035 Determining blood viscosity
• CPC Class Codes: A61B 5/14514 using means for aiding extraction of interstitial fluid, e.g. microneedles or suction
• 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 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150213 Venting means
• 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 5/15045 comprising means for capillary action
• CPC Class Codes: A61B 5/150465 Specific design of proximal end
• CPC Class Codes: A61B 5/150511 Details of construction of shaft
• 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 5/15167 Characterized by a folded strip
• CPC Class Codes: A61B 5/6848 Needles

Abstract

The present invention relates, in general, to lancing elements for use in drawing bodily fluids out of a patient and, more particularly, to an improved lancing element including first and second elements positioned relative to each other such that an incision formed by the first element is held open by the second element and bodily fluids are pulled up the lancing element by surface tension on the first and second lancing elements.

Claims

1. A lance comprising:

a substantially planar lancing element having a sharpened end point at a distal end thereof,

a single, substantially planar separation element having a separation tip, said separation tip positioned proximal to said sharpened endpoint;

a fill channel, said fill channel connecting a proximal end of said lancing element to a proximal end of said separation element wherein said lancing element is connected to said separation element only at said proximal end of said separation element;

said fill channel comprising;

a wall extending the length of said fill channel;

an opening extending the length of said fill channel;

said lancing element and said separation element forming a gap therebetween, said gap being wider at its proximal end than its distal end.

2. A lance according to claim 1 wherein said separation element is positioned at an angle to said lancing element.

3. A lance according to claim 1, wherein said lancing element, said separation element and said channel are formed from a single sheet of metal.

4. A lance according to claim 1, wherein at least a portion of said channel is treated with a hydrophilic surface coating.

5. A lance according to claim 1, wherein at least a portion of said lancing element and at least a portion of said separation element are coated with a hydrophilic surface coating.

6. A lance in accordance with claim 1, wherein a proximal end of said channel is integrated into a sensor strip.

7. A lance in accordance with claim 6, wherein said sensor strip is connected at a proximal end thereof to a plurality of additional sensor strips.