Device for withdrawing blood for diagnostic applications
First Claim
1. A lancet device, comprising:
- a housing;
a lancet disposed in the housing and configured for puncturing movement relative to the housing;
a spring;
a transmission having a rotor coupled to the spring; and
a loading element coupled to the transmission and configured for loading movement along an axial loading path relative to the housing;
wherein, the transmission converts the loading movement of the loading element into a first rotation of the rotor about an axis disposed substantially parallel to the axial loading path, the first rotation tensioning the spring and thereby loading the lancet device.
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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
27 Claims
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1. A lancet device, comprising:
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a housing; a lancet disposed in the housing and configured for puncturing movement relative to the housing; a spring; a transmission having a rotor coupled to the spring; and a loading element coupled to the transmission and configured for loading movement along an axial loading path relative to the housing; wherein, the transmission converts the loading movement of the loading element into a first rotation of the rotor about an axis disposed substantially parallel to the axial loading path, the first rotation tensioning the spring and thereby loading the lancet device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A blood lancet device for withdrawing blood, including:
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a housing; a lancet being movable in the housing; a rotor disposed in the housing and having a spring connected thereto; a locking device for locking the spring in a loaded state; and a transmission connected to the housing, the transmission converting a linear motion of a loading element into a first rotational motion of the rotor about a rotational axis that is substantially parallel to a main axis of the housing to load the rotor by tensioning the spring. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification