| 摘要 |
A syringe (10) for dispensing a fluid comprising: a barrel (20) for containing the fluid; a plunger (30) having a plunger head (36) slideably mounted and retractable within the barrel; and locking means (40). The locking means includes fixing means which, when engaged, permanently prevent retraction of the plunger head relative to the barrel beyond a predetermined distance, thereby limiting the travel of the plunger head.
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