Device for withdrawing blood for diagnostic applications
First Claim
1. A lancet device, including:
- a housing;
a lancet configured for translational movement relative to the housing between a retracted position and an extended position wherein a tip of the lancet extends from the housing;
a drive spring;
a transmission having a rotor coupled between the drive spring and the lancet; and
a loading element coupled to the transmission, the loading element being configured for translational movement relative to the housing;
wherein the transmission converts the translational movement of the loading element into rotational movement of the rotor in a first direction against a biasing force of the drive spring, and converts rotational movement of the rotor in a second direction into the translational movement of the lancet.
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Accused Products
Abstract
A device for withdrawing blood for diagnostic purposes including a lancet and a lancet drive having a loadable elastic drive spring provided within an elongated housing. A relaxing motion of the drive spring is converted into a puncturing motion to move the lancet at high speed in a puncturing direction until its tip exits out of an opening of the housing. The device includes a transmission in the housing that has an input side that transforms the motion of a loading element along a linear loading path into a rotational motion of a lancet drive rotor to load the lancet drive rotor by tensioning the drive spring. When the lancet drive is triggered, the output side of the transmission converts a rotational motion of the lancet drive rotor, driven by the drive spring, into the puncturing motion in a direction along the main axis.
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Citations
47 Claims
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1. A lancet device, including:
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a housing;
a lancet configured for translational movement relative to the housing between a retracted position and an extended position wherein a tip of the lancet extends from the housing;
a drive spring;
a transmission having a rotor coupled between the drive spring and the lancet; and
a loading element coupled to the transmission, the loading element being configured for translational movement relative to the housing;
wherein the transmission converts the translational movement of the loading element into rotational movement of the rotor in a first direction against a biasing force of the drive spring, and converts rotational movement of the rotor in a second direction into the translational movement of the lancet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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15. A blood lancet device for withdrawing blood, including:
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a housing;
a lancet being movable in the housing in the direction of a main axis of the housing along a puncturing path;
a lancet drive having a rotor, a drive spring, and a locking device for locking the drive spring in a loaded state, the lancet drive converting movement of the drive spring into movement of the lancet along the puncturing path; and
a transmission connected to the housing, the transmission converting a linear motion of a loading element into a first rotational motion of the lancet drive rotor about a rotational axis that is substantially parallel to the main axis to load the rotor by tensioning the drive spring, and converting a second rotational motion of the rotor driven by the drive spring into the movement of the lancet along a puncturing path until a tip of the lancet emerges from an opening formed in the housing.
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30. A lancet device, including:
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a housing having a main axis and an opening at one end;
a lancet having a tip;
a rotor disposed within the housing for rotational movement between a first position and a second position;
a drive spring connected between the rotor and the housing, the drive spring biasing the rotor toward the first position;
a loading element coupled to the housing for movement along a loading path that is substantially parallel to the main axis, the loading element movement causing movement of the rotor to the second position; and
a cam mechanism coupled between the rotor and the lancet, the cam mechanism converting the rotational movement of the rotor from the second position to the first position into movement of the lancet along a puncturing path that is substantially parallel to the main axis between a retracted position and an extended position wherein the lancet tip extends through the housing opening.
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31. A blood withdrawal kit, including:
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a lancet device having a housing, a drive spring, a transmission having a rotor coupled between the drive spring and the housing, and a loading element configured for translation movement relative to the housing; and
a lancet adapted to be used with the lancet device;
wherein the transmission converts the translational movement of the loading element into rotational movement of the rotor in a first direction against a biasing force of the drive spring, and converts rotational movement of the rotor in a second direction into translational movement of the lancet along a puncturing path until a tip of the lancet emerges from an opening formed in the lancet device housing.
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32. A blood lancet device for withdrawing blood for diagnostic purposes, comprising:
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an elongated housing, a front end of which having an exit opening for a tip of a lancet;
a lancet being movable in the housing in the direction of a main axis of the housing along a predetermined puncturing path;
a lancet guide for guiding the lancet along the predetermined puncturing path;
a lancet drive having an elastic drive spring configured to be locked by a locking device in a loaded state of the drive spring, the lancet drive converting after triggering of the locking device a tension-release movement of the drive spring into a puncturing motion to move the lancet at high speed along the predetermined puncturing path in a puncturing direction until the tip emerges from the exit opening to produce a wound in a body part adjacent the exit opening; and
a double sided rotary/translatory transmission provided in the housing including an input side for converting a motion of a loading element that moves along a linear loading path, into a rotational motion of a lancet drive rotor, the lancet drive rotor being rotated about a rotational axis running parallel to the main axis to load the lancet drive rotor by tensioning the drive spring, and an output side for converting after triggering of the lancet drive a rotational motion of the lancet drive rotor driven by the drive spring into the puncturing motion in the direction of the main axis. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification