Patent ID: 7879059

Claim:
A lancet assembly comprising: a lancet structure including an ejector and a lancet, the ejector comprising a trigger, an arm, a spring having a front end and a rear end, and a base attached to the trigger, the arm, and the spring, the spring having a connector provided on the front end, and being connected to the base at the rear end, and the lancet comprising a lancet body connected to the connector, a lancet cover, and a pricking element having a distal end, the pricking element being disposed within and straddling across the lancet body and the lancet cover, and the distal end of the pricking element being enclosed by the lancet cover, the lancet cover including a tapered portion; and a lancet holder having reverse tapered portion, a front end and an opening configured to enable the distal end of the pricking element to pass therethrough, the lancet holder being configured to hold the lancet structure, wherein when the lancet structure is inserted into the lancet holder and the base is moved toward the connector so as to compress the spring with the connector being engaged with the lancet holder, the lancet cover is separated from the pricking element by movement in an oblique direction of the lancet cover by the tapered portion of the lancet cover being moved along the reverse tapered portion of the lancet holder, relative to the pricking element, which remains substantially in the same position, thereby exposing the distal end of the pricking element which has been enclosed, and when the base is further moved thereafter, the trigger disengages the engaged connector.