The application discloses a method for monitoring a quantity of a medication liquid stored in a syringe. The syringe comprises a tube shaped syringe body with an open end and distal end opposite to the open end and configured to store the medication liquid, and a plunger positioned in the syringe body. The plunger forms a seal with an inner wall of the syringe body and is to cause a discharge of the medication liquid though a discharge opening of the syringe body when a force is exerted on the plunger. In the method a parameter is derived which is indicative for the pressure exerted to the liquid. Quantity information indicative for a quantity of medication liquid discharged is derived from the derived parameter and the time duration that the pressure indicated by the parameter is exerted.
The application discloses a data logger (1) for logging values of a physical environment parameter (T) as a function of time (t). The application also discloses a method for use in the data logger (1) for sampling and encoding successive sample values. The data logger (1) comprises a sampling subsystem (2), which acquires sample values (21) of the physical environment parameter (T) at sampling moments which are separated by sample intervals (INT1, INT2). An encoding subsystem (3) defines data records representing groups of one sample value (21) or a number of successive sample values (21) with variations which meet a first stability criterion. Each data record comprises first identifiable bits (b10-b00) defining a representative value (Trep) for the samples values (21) of the corresponding group and a second identifiable bits (b15-b12) indicating the number of samples in the corresponding group and a flag bit (b11) indicating the use of either the first or second interval length. A memory subsystem (4) for storing the sequence of defined data records into a memory (7). The application further discloses a reading device (40) which reads the data records from the data logger (1). The logged data can be made visible as a graph or table on a display of the reading device (40). Preferably the reading device is a NFC enabled Smartphone in which an App can be loaded for providing the read and display function. This App can be made available for downloading on a server (41) which can be connected to the Smartphone via a communication network, such as e.g. the internet.
A data logger for logging values of a physical environment parameter as a function of time is disclosed. The data logger comprises a sampling subsystem, an encoding subsystem and a memory subsystem. The sampling subsystem acquires a sequence of sample values of the physical environment parameter at sampling moments which are separated by sample intervals. The encoding subsystem converts the sequence of sample values in data records. Each data records comprises a representative value representing groups of one sample value or a number of successive sample values with variations which meet a stability criterion. The data records further comprise information representative of the lengths of the groups. The memory subsystem stores a sequence of defined data records into a memory. The data logger is arranged to determine in which range of a plurality of ranges a sample of the environment parameter is located, and to use a stability criterion for the encoding which depends on the determined range. The data logger is in particular suitable for monitoring an environment parameter such as the temperature at which medications are stored. The data logger enables logging of the temperature with low accuracy when the temperature is within the storage range in no high accuracy is required and with a high accuracy when the temperature has exceeded the boundaries of the usual storage range. In this way a substantial reduction of the required storage capacity of the memory can be achieved without a noteworthy effect on the quality of the monitoring.
Disclosed is an add-on unit (5) for a handheld container, preferably a medication container (1), for storing medication objects, e.g. pills (2), to be dispensed. The add-on unit (5) comprises an open channel (6) with dimensions enabling a free passage of an object to leave the container under influence of a gravity force without using a dispensing mechanism. Shaking the medication container (1) while it is held in a slanting upside down position causes that objects are moved to the channel (6) and will fall through the channel to leave the container (1). A detector (42,43 and 44) detects the object which passes the channel (6). Electronic circuitry (8) derives and stores information related to one or more detected passages of objects. The add-on unit (5) is provided with an interface for communication with the outside world for outputting the information derived. Preferably the add-on unit has the form of an insert unit which fits in the neck of a standard container.