| 摘要 |
A lancet device has a needle assembly and a needle carrier. The needle assembly has a casing, a needle hub, a retracting unit and a limit unit. The needle hub with a needle is mounted in the casing. The retracting unit and the limit unit connect to the needle hub to limit the needle hub to move. The lancet carrier has a housing, a pushing rod, a spring and a cap. The housing connects the needle assembly and has a pressing unit. The pushing rod is mounted in the housing and abuts with the needle hub after pushing the pressing unit to release the force of the spring so the needle protrudes from the needle assembly. After pressing the cap, the needle assembly releases from the needle carrier. Therefore, the new needle assembly can be mounted in the lancet carrier to prick again.
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