| 摘要 |
<p>An actuator mechanism and assembly (10, 200) for sequentially advancing and retracting a lancet needle (12a, 211) includes a housing (16, 216) having an opening (14, 219a) for operating projection of the needle (12a, 211). Two guide tracks (56, 256; 40, 240) are provided within the housing (16, 216) for guiding separate motions of a two-part needle holder structure (18, 218) propelled by a drive spring (34, 234), and the needle (12a, 211) itself is smoothly guided along one of the tracks (56, 256) to advance and thrust the needle (12a, 211) into a tissue penetration position immediately followed by automatic retraction along the same highly accurate linear path (56, 256).</p> |
