US 2021/0008288 A1 · STATE ESTIMATION FOR DRUG DELIVERY SYSTEMS

Abstract

A flexible and reliable delivery state estimator or evaluator is provided for a drug delivery device. The proposed delivery status estimation architecture includes a position sensor that provides a continuous position sensor signal indicative of a current position of a component of the delivery device movable continuously from a first to a second component position, as well as a position discriminator that redefines the continuous position sensor signal to generate an approximate binary input signal on behalf of a state estimator. The discriminator absorbs any difficulty that may arise from a limited reproducibility or enhanced variability of the original continuous sensor signal, specifically including a user-originated signal spread in a movement of a needle protection sleeve of the delivery device.

Claims20

Dependent claims

A method of evaluating a delivery status of a drug delivery device with a container holding a liquid drug, comprising:

providing, by a position sensor, a continuous position sensor signal indicative of an instantaneous position of a component of the delivery device movable from a first to a second component position;
generating, by a position discriminator, a binary position signal associated with the first and the second component position;
and
deriving, by a status evaluator, the delivery status from the binary position signal.

1 more element

A computer program which, when being executed by a processing unit of a monitoring unit of a drug delivery device with a container holding a liquid drug, causes the processing unit to execute a method of evaluating a delivery status of the drug delivery device, comprising:

providing, by a position sensor, a continuous position sensor signal indicative of an instantaneous position of a component of the delivery device movable from a first to a second component position;
generating, by a position discriminator, a binary position signal associated with the first and the second component position;
and
deriving, by a status evaluator, the delivery status from the binary position signal.

1 more element

Dependencies are inferred from the claim text.

State estimation for drug delivery systems

Life of this patent

State estimation for drug delivery systems

Life of this patent

Abstract

Claims20