| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize a puncture device and a drug solution administration device which are capable of being much easily downsized as compared with conventional ones.SOLUTION: A drug solution administration device 200 is provided with a pulling-back mechanism (an inner needle slide part 291 and a first coil spring 293) inside a puncture mechanism (a catheter slide part 290 and a second coil spring 296). The puncture mechanism 280 has a double structure, so that the puncture mechanism can be easily downsized as compared with conventional puncture mechanisms, etc. in which a puncture mechanism and a pull-back mechanism are juxtaposed to each other, for example.</p> |
