Body fluid sampling device

• US 9,022,952 B2
• Filed: 03/15/2012
• Issued: 05/05/2015
• Est. Priority Date: 03/06/2004
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Calasso, Irio Guiseppe, Griss, Patrick, Jaeggi, Rainer, Sarofim, Emad
• Primary Examiner(s): Hindenburg, Max
• Assistant Examiner(s): DANEGA, RENEE A
• Application Number:
  US13/421,163
• Publication Number:
  US 20120174688A1
• Time in Patent Office: 1,146 Days
• Field of Search: 738/648.1, 600/583
• US Class Current: 600/583
• 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 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150251 Collection chamber divided into at least two compartments, e.g. for division of samples injection syringes having more than one chamber A61M5/19; syringes for injection of two or more media A61M5/2448, A61M5/284; sample preparation for further analysis A61B5/150755
• CPC Class Codes: A61B 5/150297 for piercing devices, i.e. devices ready to be used for lancing or piercing for piercing elements A61B5/150282, for driving devices A61B5/15029
• 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 5/150419 comprising means for capillary action
• CPC Class Codes: A61B 5/150435 Specific design of proximal end
• 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 5/15107 Piercing being assisted by a triggering mechanism
• CPC Class Codes: A61B 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap

Abstract

Body fluid sampling device comprising a skin-piercing element having a fluid pathway for receiving body fluid, at least a portion of said fluid pathway is open to the environment and further comprising a fluid receiving means being spaced from said fluid pathway so that fluid in said pathway will not contact the fluid receiving means initially. Said fluid receiving means may have a test zone for performing an analytical reaction. Fluid from said channel is contacted with said fluid receiving means either by bringing the fluid receiving means and the fluid into mechanical contact or by electrically transporting fluid from the channel onto the fluid receiving means.

Claims

1. An analytical device, comprising:

a support structure having a laterally open capillary channel therein which is accessible from the surrounding in at least an access region, said laterally open capillary channel having a fluid introduction region located upstream the access region, said laterally open capillary channel having a discharge region located downstream the access region, wherein the support structure is a skin piercing element; and

a fluid receiving means, the fluid receiving means being spaced a distance from the channel in a first state and the fluid receiving means being in contact with fluid located in the access region in a second state to receive fluid, so that the fluid receiving means is not contacted with a fluid from the discharge region.

2. The analytical device of claim 1, wherein the skin piercing element includes a sharp tip for forming an incision in tissue, the fluid introduction region is adjacent the sharp tip.

3. The analytical device of claim 1, wherein the fluid receiving means comprises a test zone.

4. A method for transporting fluid from a support structure to a fluid receiving means, comprising the steps of:

holding a support structure having a channel for receiving fluid therein which is accessible from the surrounding in at least an access region in a spaced relationship to a fluid receiving means wherein the access region is spaced a distance from and opposite to the fluid receiving means, wherein the support structure is a skin piercing element; and

applying an electrical potential between fluid in said access region and said fluid receiving means so that fluid from said access region is transported onto said fluid receiving means.

5. The method of claim 4, wherein the skin piercing element includes a sharp tip for forming an incision in tissue, a fluid introduction region is adjacent the sharp tip.

6. The method of claim 4, wherein the fluid receiving means comprises a test zone.

7. The method of claim 4, wherein the access region is an enlarged portion of the channel which forms an open chamber and on the chamber there are located upstanding elements.

8. A method for transporting fluid from a support structure to a fluid receiving means, comprising the steps of:

holding a support structure having a channel for receiving fluid therein which is accessible from the surrounding in at least an access region in a spaced relationship to a fluid receiving means wherein the access region is spaced a distance from and opposite to the fluid receiving means, wherein the fluid receiving means comprises a carrier; and

applying an electrical potential between fluid in said access region and said fluid receiving means causes the carrier to move towards the channel so that fluid from said access region is transported onto said fluid receiving means.

9. An analytical device, comprising:

a support structure having a channel therein which is accessible from the surrounding in at least an access region, said channel having a fluid introduction region located upstream the access region, said channel having a discharge region located downstream the access region, wherein the access region is configured to bend to contact a fluid receiving means; and

a fluid receiving means, the fluid receiving means being spaced from the channel in a first state and the fluid receiving means being in contact with fluid located in the access region in a second state to receive fluid, so that the fluid receiving means is not contacted with a fluid from the discharge region.