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Lancet device for puncturing the skin

  • US 7,811,302 B2
  • Filed: 09/01/2006
  • Issued: 10/12/2010
  • Est. Priority Date: 04/13/2006
  • Status: Active Grant
First Claim
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1. A lancet device (10) for puncturing the skin (11) of mammals, comprising:

  • a punch element (12);

    a manipulator (13) operably connected to the punch element;

    a bushing element (14) having a grip (15) and an interior (28) in which the punch element (12) is axially displaceably disposed;

    the punch element (12) having a lancet (18) provided with a sharp tip (19) for deliberate entering of the skin (11) on a free end (17) thereof pointing away from the manipulator (13), wherein, by means of a force acting in a lancing direction along a longitudinal axis (16), away from the manipulator, the lancet (18), via the punch element (12), can be made to extend outward from a free end (21) of the bushing to enter the skin (11) with a preadjustable momentum; and

    including blocking means which prevents the possibility of reentry of the lancet (18) into the skin (11) once the lancet (18) has previously entered the skin (11), said blocking means comprising;

    a sleeve element (35) disposed in an axially slidable relationship in the interior (28) of the bushing element (14), and which includes a first sleeve projection (38), oriented radially inwardly towards the longitudinal axis (16),wherein a first punch projection (24) defined on the punch element and oriented radially outwardly from the longitudinal axis (16) slidingly passes and locks beyond the first sleeve projection (38) during entry of the lancet (18) into the skin (11) and upon reentry of the lancet (18) into the end (21) of the bushing, the first punch projection (24) engages the first sleeve projection (38) to axially displace the sleeve element (35) in the axial direction (34) towards the manipulator (13).

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