| 摘要 |
<p>A disposable, sterilizable syringe (1) for injecting a fluid medication from a pre-filled cartridge (8) to a targeted tissue area. An axially extending guide slot (18) having distally (26) and proximally (24) oriented locking detents is formed through a side of the syringe cylinder. A needle position control button (36) is adapted to ride through the guide slot to cause a needle carrying hub (6), to which the control button is integrally connected and from which the needle cannula projects, to correspondingly move through the cylinder. Accordingly, the needle position button can be located at the distally oriented locking detent for simultaneously causing the needle cannula to project outwardly and distally from the syringe cylinder, or the needle position control button can be selectively relocated through the guide slot to the proximally oriented locking detent, so that the needle cannula can be retracted and locked within the cylinder to permit a safe handling and disposal of the syringe after use.</p> |
