| 摘要 |
A blood sampling device has a tubular body (1, 2) housing a spring loaded (7 ) lancet (8) whose needle (17) is initially pro- tected by a cap (20) which projects out from the forward end of the body. A rocker-like trigger (9) is formed as part of the moulded body (1, 2) and holds the lancet (8) in a retracted position when th e lancet is pushed back by the projecting cap (20). The cap can then be removed by a twist and pull action, breaking it free from th e lancet body, which is prevented from rotating. Pres- sure on the trigger (9) releases the lancet (8), which is shot forward by th e spring (7) for momentary projection of the needle tip (19), and then retracts to bring the needle tip within the body. |
