Tongue depressor
A tongue depressor was a flat wooden stick that was used to immobilize a patient's tongue in order to allow a doctor a clear view of the individual's throat. 

In 2266, Doctor Leonard McCoy used a tongue depressor on Professor Robert Crater while examining his tonsils, just before he was interrupted by Nancy Crater's scream. ()

In 2377, while exhibiting the personality of The Doctor, Seven of Nine euphemistically complained to Jaryn that Ranek wanted "to use (her) face as a tongue depressor" (kiss her passionately). ()

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Medical equipment