The hypospray was created for Star Trek when the writers discovered that they were not allowed to use syringes. The hypospray got them around the issue. The injector was usually applied to the arm, or neck. It delivers the medication intravenously or intramusculary. It can be used through clothing.
Could the hypospray be our weapon? Used on Jadzia? By the Borg? In the crew quarters?
In order to solve this puzzle you will have to understand medicine.
You might need an extractor to retrieve the log. If the log tube detaches from the cache, push the cache together like you are using a hypospray and reattach the tube. Please replace as found

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