Blood withdrawal system
First Claim
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1. A blood withdrawal system for withdrawing blood for diagnostic purposes, the system comprising:
- a housing wherein a lancet can be moved along a predetermined puncturing path to perform a puncturing motion;
a lancet drive comprising a drive spring and a cocking mechanism, wherein the cocking mechanism includes an actuation element which is coupled by an input-side coupling mechanism to the drive spring, said input-side coupling mechanism being adapted to effect a transmission of force from the actuation element to the drive spring, such that the drive spring is tensioned when the actuation element is moved during a cocking phase of the motion of the lancet drive, and the drive spring is adapted to be coupled by an output-side coupling mechanism to a lancet such that said output-side coupling mechanism is adapted to effect a transmission of force from the drive spring to a lancet, such that a lancet can be driven by the relaxing motion of the drive spring and moved along a pre-determined puncturing path to perform a puncturing motion to generate a wound; and
a lancet ejection mechanism for removing a used lancet from the housing, wherein the actuation element of the cocking mechanism of the lancet drive serves also as an actuation button for the lancet ejection mechanism, thereby performing the functions of tensioning the drive spring during the cocking phase and actuating the lancet ejection mechanism.
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Abstract
The present invention generally relates to a blood withdrawal system for withdrawing blood for diagnostic purposes. The blood withdrawal system comprises housing with a lancet, which can be moved within the housing. The housing also includes a lancet drive with a drive spring and a cocking mechanism that includes an actuation element. The blood withdrawal system of the present invention also includes a lancet ejection mechanism that can be moved from an active position to remove the lancet to a passive position where such removal of the lancet is not possible.
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Citations
10 Claims
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1. A blood withdrawal system for withdrawing blood for diagnostic purposes, the system comprising:
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a housing wherein a lancet can be moved along a predetermined puncturing path to perform a puncturing motion;
a lancet drive comprising a drive spring and a cocking mechanism, wherein the cocking mechanism includes an actuation element which is coupled by an input-side coupling mechanism to the drive spring, said input-side coupling mechanism being adapted to effect a transmission of force from the actuation element to the drive spring, such that the drive spring is tensioned when the actuation element is moved during a cocking phase of the motion of the lancet drive, and the drive spring is adapted to be coupled by an output-side coupling mechanism to a lancet such that said output-side coupling mechanism is adapted to effect a transmission of force from the drive spring to a lancet, such that a lancet can be driven by the relaxing motion of the drive spring and moved along a pre-determined puncturing path to perform a puncturing motion to generate a wound; and
a lancet ejection mechanism for removing a used lancet from the housing, wherein the actuation element of the cocking mechanism of the lancet drive serves also as an actuation button for the lancet ejection mechanism, thereby performing the functions of tensioning the drive spring during the cocking phase and actuating the lancet ejection mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification