Injection pen and sounding device thereof

Abstract

The invention discloses an injection pen and a sound production device thereof, and relates to the technical field of medical instruments, the injection pen sound production device comprises a pen body, an injection mechanism and an adjusting mechanism, and a sound production area is formed on the inner wall of the pen body; the injection mechanism comprises a push rod sleeve provided with a sound production shifting piece, the sound production shifting piece is arranged towards the sound production area, and the sound production shifting piece makes contact with the sound production rib position to generate first feedback corresponding to the rotation angle. The adjusting mechanism comprises a dosage hub provided with a sound production protrusion, the sound production protrusion is arranged towards the sound production area, and the sound production protrusion makes contact with the sound production rib position to generate second feedback corresponding to the rotation angle. According to the sounding device for the injection pen, the sounding rib position, the specific sounding pick and the sounding bulge are arranged on the pen body of the injection pen, so that clear and easy-to-distinguish sound sense feedback is provided, and the problem that the sound sense feedback is not clear in the dose adjustment and injection process of the injection pen in the prior art is effectively solved; and the operation accuracy and the user experience are improved.

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