Abstract: An apparatus and method is provided for analyzing a breathing gas flowing along a breathing tubing for subject breathing. The breathing gas comprises breathing cycles having different phases. Liquid particles can be delivered intermittently depending on the phase, or continuously into the breathing gas. The apparatus comprises a gas sample supplier for adjusting gas sample supply from the breathing gas, and a gas analyzer for receiving the gas sample adjusted by the gas sample supplier and for measuring the gas sample property. The apparatus further comprises a processing unit for receiving a signal indicative of one of the phases of the breathing cycle and the delivery timing of the liquid particles. The processing unit is able to control the sample supplier based on the signal to limit access of liquid particles with the gas sample towards the gas analyzer.

Abstract: A sensor for measuring a concentration of a respiratory gas component is disclosed herein. The sensor comprises at least one radiation source configured to emit radiation and at least one radiation sensing detector configured to receive radiation and provide a signal indicative of the concentration of the gas component. The sensor further comprises an electronics board configured to receive and process the signal to determine the concentration, and an energy storage device configured to supply energy to the radiation source. The electronics board is configured to choose from among at least two different modes, one being an operation mode allowing sufficient energy supply to the radiation source, and another being a rest mode allowing reduced energy supply compared to the operation mode to limit radiation for saving energy within the breathing cycle. A gas analyzer and method for measuring a concentration of a respiratory gas component are also provided.

Abstract: A breathing mask for ventilating a patient, the breathing mask includes a housing covering a respiratory passage of the patient, a first cavity surrounded at least partly by the housing conveying both an inspiratory and expiratory gas, a respiratory port delivering the inspiratory gas from the first cavity and the expiratory gas to the first cavity, and a sampling cell in flow communication with the first cavity, which sampling cell is adapted to convey both the inspiratory gas towards the respiratory port and the expiratory gas from the respiratory port, wherein the sampling cell includes at least one component for enabling a signal acquisition of at least one of the inspiratory and expiratory gas compound.

Abstract: A branching unit for delivering a respiratory gas of a subject is disclosed herein. The branching unit includes a first limb for delivering an expiratory gas during an expiratory phase and a second limb for delivering an inspiratory gas during an inspiratory phase. The branching unit also includes a third limb connecting with the first limb and the second limb for delivering both said expiratory gas and said inspiratory gas and at least one port for a medical appliance.

Abstract: A gas analyzer for measuring at least two components of a gas is disclosed herein. The gas analyzer comprising an emitter configured to emit infrared radiation through the gas, a filter assembly configured to permit a transmission of predetermined wavelengths emitted by the emitter, and a detector configured to receive wavelengths emitted by the emitter and penetrated through the filter assembly. The filter assembly comprises at least two tunable narrowband interference filters in series, each of the filters comprising two dielectric mirrors and an air space between the two dielectric mirrors to tune one of the filters to different transmission band than another of the filters.

Abstract: A sensor for measuring a concentration of a respiratory gas component is disclosed herein. The sensor comprises at least one radiation source configured to emit radiation and at least one radiation sensing detector configured to receive radiation and provide a signal indicative of the concentration of the gas component. The sensor further comprises an electronics board configured to receive and process the signal to determine the concentration, and an energy storage device configured to supply energy to the radiation source. The electronics board is configured to choose from among at least two different modes, one being an operation mode allowing sufficient energy supply to the radiation source, and another being a rest mode allowing reduced energy supply compared to the operation mode to limit radiation for saving energy within the breathing cycle. A gas analyzer and method for measuring a concentration of a respiratory gas component are also provided.

Abstract: An apparatus for discharging fluid for a subject breathing. The apparatus includes a fluid cavity for conveying a fluid to be discharged; a valve for guiding the flow of fluid through the fluid cavity; a control unit for controlling the valve for guiding the flow of fluid; a first housing having a wall and a hole on this wall for fluid flowing through the fluid cavity; a first member apart from the first housing having holes discharging fluid through them for the subject breathing; a chamber between the first member and the first housing for receiving the fluid coming along the fluid cavity; a vibrator making the first member to vibrate and discharge fluid through the holes to a subject breathing tube. The vibrator is in contact with the first member through a transmitter extending towards the chamber and which transmitter transmits the vibration effect from the vibrator to the first member.

Abstract: A gas analyzer for measuring at least two components of a gas is disclosed herein. The gas analyzer comprising an emitter configured to emit infrared radiation through the gas, a filter assembly configured to permit a transmission of predetermined wavelengths emitted by the emitter, and a detector configured to receive wavelengths emitted by the emitter and penetrated through the filter assembly. The filter assembly comprises at least two tunable narrowband interference filters in series, each of the filters comprising two dielectric mirrors and an air space between the two dielectric mirrors to tune one of the filters to different transmission band than another of the filters.

Abstract: A method for maintaining a volume of a breathing gas in a desired level when ventilating a subject is disclosed herein. The method includes supplying the volume of the breathing gas for an inspiration and receiving the volume of the breathing gas for an expiration and withdrawing a gas sample from the volume of the breathing gas for an analysis. The method also includes providing a signal indicative of a volume of the gas sample withdrawn and determining the volume of the gas sample based on providing the signal. The method further includes controlling a volume of a compensation gas configured to be added into the breathing gas based on determining the volume of the gas sample for maintaining the breathing gas volume in the desired level. A corresponding arrangement for maintaining a volume of a breathing gas in a desired level is also provided.

Abstract: A method and interface for cooling electronics that generate heat are provided. The interface includes a housing having tubing (i) therein to transfer heat from liquid flowing in the tubing and (ii) extending therefrom and configured to engage a pump. The tubing forms a closed circulation path. The interface further includes an electrical connection member configured to provide electrical connection through the housing and to the electronics.

Abstract: An airway adapter. The airway adapter has a sampling chamber for allowing a respiratory gas flow. The airway adapter also has a sensor for acquiring a signal needed for a respiratory gas analysis. The sensor is integrated into the airway adapter and which sensor comprises an electrolyte being in contact with the respiratory gas flowing in the sampling chamber and which electrolyte contact with the respiratory gas is a basis for respiratory gas analysis.

Abstract: A branching unit for delivering a respiratory gas of a subject is disclosed herein. The branching unit includes a first limb for delivering an expiratory gas during an expiratory phase and a second limb for delivering an inspiratory gas during an inspiratory phase. The branching unit also includes a third limb connecting with the first limb and the second limb for delivering both said expiratory gas and said inspiratory gas and at least one port for a medical appliance.

Abstract: An arrangement for supervising a medical monitor. The arrangement for supervising the medical monitor comprises a measurement function having at least one measurement device to make at least one measurement for obtaining measurement information for monitoring one or more patient care signals. The arrangement for supervising the medical monitor also includes a supervision analyzer configured to communicate with the measuring function and to receive the measurement information. The supervision analyzer is adapted to obtain reference information and to compare the measurement information to the reference information to determine whether the measurement function is working properly.

Abstract: A method and interface for cooling electronics that generate heat are provided. The interface includes a housing having tubing (i) therein to transfer heat from liquid flowing in the tubing and (ii) extending therefrom and configured to engage a pump. The tubing forms a closed circulation path. The interface further includes an electrical connection member configured to provide electrical connection through the housing and to the electronics.

Abstract: A method and apparatus for cooling in miniaturized electronics are provided including in an electronic circuit board. The electronic circuit includes a substrate and at least one integrated channel within the substrate configured to allow fluid flow therethrough.

Abstract: A method for delivering an anesthetic agent into a breathing air of a subject. The method for delivering an anesthetic agent into a breathing air of a subject includes feeding a target anesthetic agent concentration, measuring a concentration of the anesthetic agent component in the breathing air, comparing the measured concentration with the fed target anesthetic agent concentration, and choosing one of regulating or not regulating the delivery of the anesthetic agent into the breathing air based on the comparison to achieve the target anesthetic agent concentration. The method for delivering an anesthetic agent into a breathing air of a subject also includes delivering doses of the anesthetic agent into the breathing air, adsorbing the anesthetic agent and releasing the absorbed anesthetic agent into the breathing air. An anesthesia delivery system is also provided.

Abstract: An airway sensor includes a gas analyzing apparatus for analyzing at least one respiratory gas and a connecting unit for communication with a remotely located host device. The gas analyzing apparatus connected to a sensor electronics and which sensor electronics is also common for flow measuring device for measuring respiratory gas flow and pressure measuring device for measuring respiratory airway pressure when connected to said sensor electronics.

Abstract: An apparatus for discharging fluid for a subject breathing. The apparatus includes a fluid cavity for conveying a fluid to be discharged; a valve for guiding the flow of fluid through the fluid cavity; a control unit for controlling the valve for guiding the flow of fluid; a first housing having a wall and a hole on this wall for fluid flowing through the fluid cavity; a first member apart from the first housing having holes discharging fluid through them for the subject breathing; a chamber between the first member and the first housing for receiving the fluid coming along the fluid cavity; a vibrator making the first member to vibrate and discharge fluid through the holes to a subject breathing tube. The vibrator is in contact with the first member through a transmitter extending towards the chamber and which transmitter transmits the vibration effect from the vibrator to the first member.