Lancing device

• US 8,540,647 B2
• Filed: 07/13/2009
• Issued: 09/24/2013
• 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
• Primary Examiner(s): Towa, Rene
• Assistant Examiner(s): EISEMAN, ADAM JARED
• Application Number:
  US12/501,760
• Publication Number:
  US 20090287116A1
• Time in Patent Office: 1,534 Days
• Field of Search: 600/583, 600/584, 606/181, 606/182
• US Class Current: 600/583
• 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 5/150022 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 a 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, wherein the feed mechanism is configured to move the lancet supply strip along the lengthwise direction; and

a lancing drive for causing a lancet, which occupies the puncturing position, to perform a puncturing movement in a direction transverse to the lengthwise direction of the lancet supply strip, said lancing drive being configured for moving the lancet together with the lancet supply strip in a puncturing movement; and

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 when the lancet is moved together with the lancet supply strip by the lancing drive in the puncturing movement.

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. The lancing system as defined in claim 1, wherein the bending mechanism is integrated into the lancing drive.

6. The lancing system as defined in claim 5, wherein the lancing drive is configured to move the lancet from a first position wherein the section of the lancet supply strip is in an unbent state to a second position wherein the section of the lancet supply strip is bent in the lengthwise direction to separate the lancet tip from the lancet supply strip.

7. The lancing system as defined in claim 6, wherein the lancing drive is configured to exert higher stress on a forward longitudinal edge of the lancet supply strip than on a rear longitudinal edge of the of lancet supply strip.

8. The lancing system as defined in claim 7, wherein the bending mechanism includes

two guide elements guiding the lancet supply strip,

a holder arranged offset transversely to the puncturing direction between the two guide elements, the holder being configured to hold the lancet in the puncturing position, and

the lancing drive being configured to move the lancet via the holder from the first position to the second position to apply tensile stress to the forward longitudinal edge of the lancet supply strip.

9. The lancing system as defined in claim 1, wherein the bending mechanism includes at least one bending surface extending obliquely relative to the puncturing direction, wherein one longitudinal edge of the lancet supply strip presses against the bending surface.

10. A cassette system having

a lancet supply strip with a plurality of lancets, arranged transversely to a lengthwise direction of the lancet supply strip, wherein the lancet supply strip is no longer along the lengthwise direction than crosswise in the lengthwise direction, and a bending mechanism for bending a section of the lancet supply strip in the lengthwise direction of the lancet supply strip and for thereby separating a lancet tip of a lancet from the lancet supply strip when the lancet is moved together with a lancet supply strip by a lancing drive in a puncturing movement.

11. 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 a 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, wherein the feed mechanism is configured to move the lancet supply strip along the lengthwise direction;

a lancing drive for causing a lancet, which occupies a puncturing position, to perform a puncturing movement in a direction transverse to the lengthwise direction of the lancet supply strip, said lancing drive being configured for moving the lancet together with the lancet supply strip in the puncturing movement; and

a bending mechanism for bending a section of the lancet supply strip in the lengthwise direction of the lancet supply strip and for thereby separating a lancet tip of a lancet from the lancet supply strip when the lancet is moved together with the lancet supply strip by the lancing drive in the puncturing movement.

12. The lancing device as defined in claim 11, characterized in that for bending the lancet supply strip the bending mechanism acts on a longitudinal edge of the lancet supply strip.

13. The lancing device as defined in claim 12, 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.

14. The lancing device as defined in claim 12, 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.

15. The lancing device as defined in claim 11, characterized in that the section of the lancet supply strip to be bent is moved in the puncturing direction for bending.

16. The lancing device as defined in claim 11, 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.

17. The lancing device as defined in claim 11, 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.

18. The lancing device as defined in claim 17, 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.

19. The lancing device as defined in claim 11, characterized in that the lancet supply strip is exchangeably arranged in a receptacle.

20. The lancing device as defined in claim 19, characterized by a strip cassette, arranged exchangeably in the receptacle, that contains the lancet supply strip.

21. The lancing device as defined in claim 20, characterized in that the bending mechanism is attached to the strip cassette.

22. The lancing device as defined in claim 11, 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.

23. The lancing device as defined in claim 11, wherein the bending mechanism is integrated into the lancing drive.

24. The lancing device as defined in claim 23, wherein the lancing drive is configured to move the lancet from a first position wherein the section of the lancet supply strip is in an unbent state to a second position wherein the section of the lancet supply strip is bent in the lengthwise direction to separate the lancet tip from the lancet supply strip.

25. The lancing device as defined in claim 24, wherein the lancing drive is configured to exert higher stress on a forward longitudinal edge of the lancet supply strip than on a rear longitudinal edge of the of lancet supply strip.

26. The lancing device as defined in claim 25, wherein the bending mechanism includes

two guide elements guiding the lancet supply strip,

a holder arranged offset transversely to the puncturing direction between the two guide elements, the holder being configured to hold the lancet in the puncturing position, and

the lancing drive being configured to move the lancet via the holder from the first position to the second position to apply tensile stress to the forward longitudinal edge of the lancet supply strip.

27. The lancing device as defined in claim 11, wherein the bending mechanism includes at least one bending surface extending obliquely relative to the puncturing direction, wherein one longitudinal edge of the lancet supply strip presses against the bending surface.

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

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

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

a lancing drive for causing a lancet, which occupies the puncturing position, to perform a puncturing movement, wherein the lancing drive is configured to move the lancet from a first position wherein the section of the lancet supply strip is in an unbent state to a second position wherein the section of the lancet supply strip is bent in the lengthwise direction to separate a lancet tip from the lancet supply strip,

said lancing drive being configured for moving the lancet together with the lancet supply strip in the puncturing movement, whereby the lancet supply strip is bent in the lengthwise direction of the lancet supply strip, and thereby the lancet tip is separated from the lancet supply strip in the puncturing movement.