LANCING DEVICE

• US 20090287116A1
• Filed: 07/13/2009
• Published: 11/19/2009
• Est. Priority Date: 01/13/2007
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Konya, Ahmet
• Granted Patent: US 8,540,647 B2
• Time in Patent Office: Days
• US Class Current: 600/583
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157
• 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 5/150358 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 5/150572 Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
• 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 5/15146 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 5/15153 Multiple piercing elements stocked in a single compartment
• CPC Class Codes: A61B 5/15169 Characterized by a rolled strip
• CPC Class Codes: A61B 5/15171 Characterized by propelling the piercing element perpendicular to the direction of movement of the strip
• CPC Class Codes: A61B 5/15178 Stocking means comprising separate compartments or units for new and for used piercing elements separate compartments for used piercing elements in piercing devices A61B5/15184
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

The invention relates to a lancing system for collecting samples of a body liquid having a receptacle for accommodating a lancet supply strip with a plurality of lancets, arranged transversely to the lengthwise direction of the lancet supply strip, a feed mechanism for transporting a lancet supply strip, placed in the receptacle, to move the lancets of the lancet supply strip one after the other to a puncturing position, and a lancing drive for causing a lancet, which occupies a puncturing position, to perform a puncturing movement. The lancing system is characterized by a bending mechanism for bending a section of the lancet supply strip in lengthwise direction of the lancet supply strip and for thereby separating a lancet tip of a lancet from the lancet supply strip for a puncturing action.

Claims

1. A lancing system for collecting samples of a body liquid comprising:

a lancet supply strip with a plurality of lancets, arranged transversely to the lengthwise direction of the lancet supply strip;

a feed mechanism for transporting a lancet supply strip, placed in a receptacle, to move the lancets of the lancet supply strip one after the other to a puncturing position; and

a lancing drive for causing a lancet, which occupies the puncturing position, to perform a puncturing movement,

characterized by

a bending mechanism for bending a section of the lancet supply strip in lengthwise direction of the lancet supply strip and for thereby separating a lancet tip of a lancet from the lancet supply strip for a puncturing action.

2. The lancing system as defined in claim 1, characterized by

a tape cassette comprising a lancet supply strip with a plurality of lancets arranged transversely to the lengthwise direction of the lancet supply strip;

and

a lancing device having

a receptacle for accommodating a cassette;

a feed mechanism for transporting the lancet supply strip of a cassette, placed in the receptacle, to move the lancets of the lancet supply strip one after the other to a puncturing position; and

a lancing drive for causing a lancet, which occupies a puncturing position, to perform a puncturing movement.

3. The lancing system as defined in claim 1, characterized in that the lancet supply strip comprises test fields for examination of samples of body liquids.

4. The lancing system as defined in claim 1, characterized in that the lancet tips of the lancets of the lancet supply strip are enclosed by a sterility protection which is broken by a lancet tip when a section of the lancet supply strip containing a lancet is bent.

5. A cassette having

a lancet supply strip with a plurality of lancets, arranged transversely to the lengthwise direction of the lancet supply strip, characterized by a bending mechanism for bending a section of the lancet supply strip in lengthwise direction of the lancet supply strip and for thereby separating a lancet tip of a lancet from the lancet supply strip for a puncturing action.

6. A lancing device for collecting a sample of a body liquid having

a receptacle for accommodating a lancet supply strip with a plurality of lancets, arranged transversely to the lengthwise direction of the lancet supply strip and provided with a lancet tip for producing a puncturing wound;

a feed mechanism for transporting a lancet supply strip, placed in the receptacle, to move the lancets of a lancet supply strip one after the other to a puncturing position; and

a lancing drive for causing a lancet, which occupies a puncturing position, to perform a puncturing movement,

characterized by

a bending mechanism for bending a section of the lancet supply strip in lengthwise direction of the lancet supply strip and for thereby separating a lancet tip of a lancet from the lancet supply strip for a puncturing action.

7. The lancing device as defined in claim 6, characterized in that for bending the lancet supply strip the bending mechanism acts on a longitudinal edge of the lancet supply strip.

8. The lancing device as defined in claim 7, characterized in that for bending the lancet supply strip the bending mechanism acts on a longitudinal edge of the lancet supply strip by at least one bending surface extending obliquely to the puncturing direction.

9. The lancing device as defined in claim 7, characterized in that the bending mechanism acts on a longitudinal edge of the lancet supply strip by two bending surfaces, the bending surfaces being arranged at a distance one from the other.

10. The lancing device as defined in claim 6, characterized in that the section of the lancet supply strip to be bent is moved in the puncturing direction for bending.

11. The lancing device as defined in claim 6, characterized in that for performing a puncturing action, the lancing drive moves a section of the lancet supply strip, together with a lancet, in the puncturing direction.

12. The lancing device as defined in claim 6, characterized by a testing facility for examination of a sample of a body liquid which is taken up by applying a partial area of the lancet supply strip, which is bent in lengthwise direction, to a body area in which a puncture wound has been produced.

13. The lancing device as defined in claim 12, characterized in that the action of the bending mechanism on the lancet supply strip is interrupted at the end of a puncturing action, the lancet supply strip is advanced by the feed mechanism, and is then again bent in lengthwise direction by the bending mechanism, and a partial area of the lancet supply strip is applied to the body area in which a puncture wound has been produced.

14. The lancing device as defined in claim 6, characterized in that the lancet supply strip is exchangeably arranged in a receptacle.

15. The lancing device as defined in claim 14, characterized by a strip cassette, arranged exchangeably in the receptacle, that contains the lancet supply strip.

16. The lancing device as defined in claim 15, characterized in that the bending mechanism is attached to the strip cassette.

17. The lancing device as defined in claim 6, characterized in that the bending mechanism is designed in that a lancet, together with the section of the lancet supply strip on which it is carried, is held in a holder of the lancet drive, the holder being arranged transversely offset to the puncturing direction between two guide elements, about which the lancet supply strip is guided, and performing a movement in the puncturing direction during a puncturing action.

18. A method for separating a lancet tip from a lancet supply strip by bending the lancet supply strip in a lancing device in lengthwise direction so that the lancet tip will be lifted off the lancet supply strip.

19. The method as defined in claim 18, characterized in that a bending mechanism arranged in the lancing device is used for bending the strip.