| 摘要 |
A safety lancet, wherein a first spring (21) and a second spring (22) are provided at two ends inside a housing (1) respectively, a protective rod is adjacent to an outlet (121) provided on the housing (1), and a press switch (13) is preset on the housing (1). A first slide block (3) and a second slide block (4) are arranged between the first spring (21) and the second spring (22), and a needle (43) is positioned on the end of the second slide block (4) opposite to the outlet (121). Two pairs of runners (31,41) extend axially from the opposite end faces of the first slide block (3) and the second slide block (4), and the two pairs of runners(31,41) are embedded in a pair of corresponding slide slots (14) within the housing (1). And the interfaces of the two pairs of slide runners (31,34) are configured as opposite inclined planes. The inclined planes (311,411) are brought into contact with each other closely under the force applied by the first spring (21) and the second spring (22). A snap rod (32) is further provided on the first slide block (3) and clasps to the press switch (13), such that the first spring (21) is preloaded to be compressed, thereby maintain the first slide block (3) and the second slide block (4) in an energy storage state. |
