Toynbee diagnostic tube.

21 C.F.R. § 874.1925
in effectEffective: 2024-07-01
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(a) Identification. The toynbee diagnostic tube is a listening device intended to determine the degree of openness of the eustachian tube. (b) Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 874.9.

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