| 摘要 |
A single use disposable lancet device (10) includes a housing (12, 14) containing a spring (18). The spring (18) has a first end (20) fixed in the housing (12, 14) and a second end zone which is movable relative to the housing (12, 14) and has a pointed blade or terminal end (22). The terminal end (22) is within the housing (12, 14) and moves between a cocked pre-stressed position completely within and with potential energy stored in the spring (18) and a piercing position with the second end zone in an opening (26) and the pointed terminal end (22) momentarily exterior of the housing (12, 14). The housing also has a lever arm (28) with a holding tip (24) maintaining the second end zone in the cocked position until it is moved by an operator. Movement by an operator results in the release of the second end zone such that the second end zone moves to its piercing position, and as soon as it pierces, it retracts into the housing (12, 14). |
