Monkey uses a retractable needle as a weapon.
When the plunger is completely depressed after the injection, the needle (which is normally fused to the syringe) retracts into the barrel of the syringe.
When the plunger handle is fully depressed, the needle is immediately retracted directly from the patient into the barrel of the syringe. The automated retraction prior to removal practically minimizes exposure to the infected needle, thereby lowering the risk of needlestick injury.
Needles with retractable safety shields are most commonly found in hospitals and long-term care settings. The retractable shield was created to lessen the chance of accidental needle penetration, eliminate needle reuse, and help patients overcome needle phobia.
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