A delivery site detector and a medicament delivery device that comprises the delivery site detector

Abstract

The present disclosure provides a delivery site detector configured to be attached to a medicament delivery device. The delivery site detector includes an ultrasonic transmitter and an ultrasonic receiver. The ultrasonic transmitter is configured to transmit an ultrasonic wave to a delivery site. The ultrasonic receiver is configured to receive an ultrasonic wave reflected by the delivery site. The ultrasonic transmitter comprises a frequency generator configured to generate and transmit ultrasonic waves with at least two different ultrasound frequencies.

Dependencies are inferred from the claim text.