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Pricking device for taking a blood sample

  • US 8,828,039 B2
  • Filed: 05/29/2009
  • Issued: 09/09/2014
  • Est. Priority Date: 06/06/2008
  • Status: Active Grant
First Claim
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1. A pricking device (1) for taking a blood sample, comprising:

  • a moveable holder device (5) for a needle (4);

    a drive means (12) comprising a drive spring (9) for driving the moveable holder device (5);

    a trigger device (19) for triggering a pricking movement (13) of the needle (4), wherein after manual activation of the trigger device (19) the moveable holder device (5) can be moved axially by means of a spring force of the drive spring (9); and

    a tensioning device (22) for tensioning the drive spring (9), wherein the tensioning device (22) comprises;

    a tensioning mechanism (23) comprising a locking device (20) for axial locking of the moveable holder holding device (5) during tensioning of the drive spring (9); and

    spring elements (25) for performing work during tensioning of the drive spring (9);

    wherein the tensioning mechanism (23) comprises an axially moveable tensioning slide (11), wherein the axially moveable tensioning slide (11) has a sliding support and an arc-shaped curved track (7) that guides the moveable holder device (5) in a targeted manner;

    wherein the drive spring (9) is coupled to the sliding support and the arc-shaped curved track (7);

    wherein a coupling element (6) connects the arc-shaped curved track (7) and the moveable holder device (5); and

    wherein a curved track follower (17) is mounted moveable inside a profile element of the arc-shaped curved track (7), such that the curved track follower (17) is configured to move radially along the arc-shaped curve track (7) upon activation of the trigger device (19).

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