Abstract: A real-time drug injection time duration measurement system includes a sound transducer, a waveform shaping circuit operably coupled therewith, a pulse clamping circuit operably coupled with the waveform shaping circuit, and a timer operably coupled with the pulse clamping circuit. The sound transducer detects a first sound associated with drug delivery initiation and a second sound associated with drug delivery completion and is further converts the detected first and second sounds into a first electronic waveform and a second electronic waveform, respectively. The waveform shaping circuit converts the first and second waveforms into a first pulse and a second pulse, respectively. The pulse clamping circuit triggers upon receiving the first pulse and generate a regenerated pulse. The timer initiates upon receiving the regenerated pulse and stop upon receiving a subsequent regenerated pulse via the pulse clamping circuit.

Abstract: This disclosure describes a drug delivery device with communication functionality for purposes of transferring information to a user device, such as a smartphone, while maintaining power-efficient operation. The drug delivery device comprises a controller configured to, while operating in the active mode, use one or more sensors to detect that the injection mechanism has performed an injection. The controller is also configured to generate in memory a data entry indicative of the injection and/or a state of the drug delivery device, and switch into the low-power mode subsequent to or contemporaneous with detecting that the injection mechanism has performed the injection. The drug delivery device also comprises a wireless communication module powered by the power source and configured to establish a wireless connection with and transfer a message to a user device while the controller is operating in the low-power mode.

Abstract: An autoinjector drug delivery device configured with a stall and endpoint detection algorithm is described that allows for variations in the fill of the drug, barrel, plunger, and other components. The stall or end point detection can cause the autoinjector to stop an extrusion process.

Abstract: An autoinjector drug delivery device configured with a stall and endpoint detection algorithm is described that allows for variations in the fill of the drug, barrel, plunger, and other components. The stall or end point detection causes the autoinjector to stop an extrusion process.

Abstract: An autoinjector drug delivery device configured with a stall and endpoint detection algorithm is described that allows for variations in the fill of the drug, barrel, plunger, and other components. The stall or end point detection causes the autoinjector to stop an extrusion process.