| 摘要 |
A needle apparatus having a quick and safe release mechanism is described. In one embodiment, the apparatus comprises a needle assembly and a device body. The needle assembly includes a needle, an insertion member supporting the needle, and a knob projecting from the needle assembly. The device body includes a receiving member and is configured to receive at least a portion of the insertion member inserted therein. The receiving member has at least one slot configured to receive the knob when the needle assembly is inserted inside the receiving member. In a preferred embodiment, the slot has a first slot section extending substantially axially, and a second slot section at an angle to the first slot section and extending substantially radially. Upon insertion of the needle assembly into the needle holder, the knob is pushed by the technician through the first slot section, and then rotated in the second slot section to secure the needle assembly to the needle holder. To remove the needle assembly, the knob is rotated from the second slot section to the first slot section. Once the knob is in the first slot section, the needle assembly can be easily released from the needle holder.
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