A breath detection apparatus for monitoring individual breaths of a patient. The apparatus includes a sensing assembly comprising a humidity sensor. The sensing assembly adapted to be connected to an oxygenation device wherein respiratory gases of a patient are directed over the sensing assembly and the humidity sensor is adapted to monitor differences in humidity during a breath of the patient. The humidity sensor generates an electrical signal representing a humidity level in response to measuring the humidity during the breath. The apparatus also includes a processor in electrical communication with the sensing assembly to receive electrical signals generated by the humidity sensor and determine a state of the relative humidity during the breath, and a visual display element controlled by the processor and adapted to display a predetermined visual alert in response to the state of the relative humidity during the breath.

Method of operating a control device for controlling an infusion device A method of operating a control device (2) for controlling an infusion device (33) for administering a drug to a patient (P) comprises the steps of: providing a model (p) to predict a time-dependent drug concentration (Cplasma, Clung, Cbrain) in multiple compartments (A1-A5) of a patient (P); setting a target concentration value (CTbrain) to be achieved in at least one of the compartments (A1-A5) of the patient (P); determining a drug dosage (D1) to be administered to a first compartment (A1) of the multiple compartments (A1-A5) of the patient (P) using the model (p) such that the difference between the target concentration value (CTbrain) and a predicted steady-state drug concentration (Cplasma, Clung, Cbrain) in the at least one of the compartments (A1-A5) is smaller than a pre-defined threshold value (Ub-rain); providing a control signal (S1) indicative of the drug dosage (D1) to an infusion device (33) for administering the drug dosage (D1) to the patient (P); obtaining a measurement value (M1, M2) indicating a measured drug concentration in a second compartment (A2, A3) of the multiple compartments (A1-A5) at a measurement time (t1, t2); adjusting the model (p) such that the model (p) predicts a drug concentration (Clung, Cbrain) in the second compartment (A2, A3) at the measurement time (t1, t2) which at least approximately matches the measured drug concentration in the second compartment (A2, A3); and determining a new drug dosage (D2, D3) to be administered into the first compartment (A1) of the patient (P) using the model (p) such that the difference between the target concentration value (CT-brain) and a predicted steady-state drug concentration (Cplasma, Clung, Cbrain) in the at least one of the compartments (A1, A2, A3) is smaller than the predefined threshold value (Ubrain). In this way a method is provided which allows for an improved (personalized and predictive) control of a drug administration procedure, in particular when administering an anaesthetic drug such as Propofol and/or an analgesic drug such as Remifentanil within a procedure.

A processor obtains input of a logistically attainable end tidal partial pressure of gas X (PetX[i].sup.T) for one or more respective breaths [i] and input of a prospective computation of an amount of gas X required to be inspired by the subject in an inspired gas to target the PetX[i].sup.T for a respective breath [i] using inputs required to utilize a mass balance relationship, wherein one or more values required to control the amount of gas X in a volume of gas delivered to the subject is output from an expression of the mass balance relationship. The mass balance relationship is expressed in a form which takes into account (prospectively), for a respective breath [i], the amount of gas X in the capillaries surrounding the alveoli and the amount of gas X in the alveoli, optionally based on a model of the lung which accounts for those sub-volumes of gas in the lung which substantially affect the alveolar gas X concentration affecting mass transfer.

A processor obtains input of a logistically attainable end tidal partial pressure of gas X (PetX[i].sup.T) for one or more respective breaths [i] and input of a prospective computation of an amount of gas X required to be inspired by the subject in an inspired gas to target the PetX[i].sup.T for a respective breath [i] using inputs required to utilize a mass balance relationship, wherein one or more values required to control the amount of gas X in a volume of gas delivered to the subject is output from an expression of the mass balance relationship. The mass balance relationship is expressed in a form which takes into account (prospectively), for a respective breath [i], the amount of gas X in the capillaries surrounding the alveoli and the amount of gas X in the alveoli, optionally based on a model of the lung which accounts for those sub-volumes of gas in the lung which substantially affect the alveolar gas X concentration affecting mass transfer.

The present disclosure relates to a method for identifying a user interface. Flow data associated with air flowing in a respiratory therapy system is received. Acoustic data associated with the respiratory therapy system is received. The received flow data and the received acoustic data are analyzed. Based at least in part on the analysis, a mask type for the user interface is determined.

Module for housing electronic and electromechanical medical equipment including a portable digital camera and processing circuitry with machine vision and machine learning software for automatically documenting healthcare events and healthcare equipment operations in the electronic health record.

A mask configured to assist the respiration of a patient with a gas inlet port positioned to connect a gas supply to the mask and direct gas flow towards a patient's skin; a scattering chamber with an inlet port and a plurality of outlet ports, the scattering chamber inlet port fluidly connected to the gas inlet port, and the plurality of outlet ports positioned to scatter the gas flow away from the patient's skin and towards the interior surface of the mask and a region between the patient's skin and the interior surface of the mask; and an outgas collector assembly connected adjacent the scattering chamber and positioned to collect an outgas emission expelled from the patient and eject the outgas emission from the mask.

An anesthesiology pump for automatic delivery and control of anesthetics to a patient provides a remote unit that may be carried by an anesthesiologist to improve supervision of the anesthesiology process without unnecessarily constraining the anesthesiologist's movement. The anesthesiology pump may assess one or both of a status of the anesthesiology procedure and the availability of the anesthesiologist to provide tailored alerts to the anesthesiologist when additional attention or availability may be needed. Availability may consider separation distance between the pump and the radiologist as well as express indications of availability. A set of predefined safe states permit a pump response when the anesthesiologist is not available and additional attention is required.

A nasal delivery device for and a method of delivering a substance to a nasal cavity of a subject, the delivery device comprising: a delivery unit for delivering a flow entraining a substance to one nostril of a subject, the delivery unit including a nosepiece for fitting to a nostril of the subject; and a flow resistor unit for fitting to the other nostril of the subject, the flow resistor unit including a progressive resistor for progressively providing an increasing flow resistance to the delivered flow.

A pressurized flow of breathable gas is delivered to the airway of a subject in accordance with a therapy regimen. The therapy regimen calls for maintenance of an average tidal volume. The therapy ensures that the subject breaths at a therapeutic breath rate. The breath rate may be determined dynamically based on breathing of the subject early on in a therapy session and/or based on a detected wakefulness of the subject. Inspiration for spontaneous and non-spontaneous breaths may be supported at different levels. The therapy regimen further maintains a beneficial positive end expiratory pressure, to reduce respiratory obstructions and/or for other purposes.