EP4734125A2 — Smart valved holding chamber

USPTO Abstract

A valved holding chamber assembly comprising: a chamber housing defining an interior space, an input end and an output end; a backpiece connected to the input end comprising: an opening shaped to receive a portion of a metered dose inhaler; a flow channel communicating between the interior space of the holding chamber and atmosphere; a two-way flow sensor in communication with the flow channel, wherein the two-way flow sensor is configured to detect an actuation of the metered dose inhaler and an inhalation by a user through the output end; an auxiliary sensor configured to detect the actuation of the metered dose inhaler; and a controller in communication with the two-way flow sensor and the auxiliary sensor, wherein based on data collected from the two-way flow sensor and the auxiliary sensor, the controller is configured to determine the occurrence of: the inhalation by a user, without the actuation of the metered dose inhaler; the actuation of the metered dose inhaler, without the inhalation by the user; and, the actuation of the metered dose inhaler during inhalation by the user.