Lancet device for generating a puncture wound, and lancet drive assembly
First Claim
1. A lancet drive assembly for use with a lancing device, the lancet drive assembly comprising:
- a lancet drive having a drive rotor driven by a drive spring and a tensioning rotor for tensioning the drive spring;
a lancet coupling mechanism having a steering curve along which a steering curve traveler travels to transform rotational motion of the drive rotor into a puncturing and return motion of a lancet that is coupled to the lancet drive; and
a second coupling mechanism coupled to the lancet drive and comprising a second steering curve along which a second steering curve traveler travels, wherein the second coupling mechanism allows a rotational motion of a rotating component of the lancet drive to be transformed into a motion of an auxiliary component.
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0 Petitions
Accused Products
Abstract
A lancet device for generating a puncture wound in a skin surface, comprising a housing, in which a lancet can be moved on a puncturing path, a lancet drive with a drive rotor that can be driven by a drive spring, a lancet coupling mechanism that transforms a rotational motion of the drive rotor into a puncturing and returning motion of the lancet during a working cycle of the lancet drive, a reference element that is mobile relative to the lancet and relative to the housing and is fixed in a defined position relative to the lancet drive during the puncturing and rests against the surface of the skin with a contact surface thereof such that a puncture wound with a reproducible puncturing depth is generated by the puncturing motion, and a reference element coupling mechanism that is coupled to the lancet drive in order to move the reference element. The invention further relates to a suitable lancet drive assembly for a lancet device of this type.
32 Citations
17 Claims
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1. A lancet drive assembly for use with a lancing device, the lancet drive assembly comprising:
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a lancet drive having a drive rotor driven by a drive spring and a tensioning rotor for tensioning the drive spring; a lancet coupling mechanism having a steering curve along which a steering curve traveler travels to transform rotational motion of the drive rotor into a puncturing and return motion of a lancet that is coupled to the lancet drive; and a second coupling mechanism coupled to the lancet drive and comprising a second steering curve along which a second steering curve traveler travels, wherein the second coupling mechanism allows a rotational motion of a rotating component of the lancet drive to be transformed into a motion of an auxiliary component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A lancet drive assembly, comprising:
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a rotor having a steering curve; and a coupling mechanism comprising a lever that is pivotable about a pivot point and that has a steering curve traveler coupled thereto, the steering curve traveler moving along the steering curve, whereby, during use of the lancet drive assembly in a lancet device, rotational motion of the rotor is transformed into forward and return movement of a lancet; wherein, the lever comprises a first arm that extends from the pivot point to a first end of the lever and a second arm that extends from the pivot point to the steering curve traveler, and further wherein, as the lever pivots, the distance traveled by the first end of the lever corresponds to the ratio of the lengths of the first and second arms. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification