A plurality of flow rate values associated with pressurized air directed to an airway of a user of a respiratory therapy system is received. A plurality of pressure values associated with the pressurized air directed to the airway of the user is received. A first time associated with a first breath of the user and a second time associated with a second breath of the user are identified. The plurality of flow rate values is filtered based at least in part on the identified first time and the identified second time. The filtering produces a subset of the plurality of flow rate values. An intentional leak characteristic curve for the respiratory therapy system is determined using at least two of the subset of the plurality of flow rate values and the corresponding pressure values for the at least two of the subset of the plurality of flow rate values.

Apparatus for locating an incision on a patient, the apparatus comprising: an elongate guide element for guiding a cutting tool to a location at a distal end of the guide element; an optical emitter for emitting an optical beam, the optical emitter being attached to the guide element so that the beam is directed to the distal end of the guide element; and an incision location template slidably attached to the guide element, the incision location template comprising a first feature adapted to be optically correlated with an anatomical feature of the patient and a second feature adapted to be optically aligned with an impingement point of the beam on the patient.

A method for optimizing sleep for a user of a respiratory therapy system is described herein. The method includes receiving therapy instructions to be implemented using the respiratory therapy system for a sleep session. The therapy instructions include a plurality of prescribed control parameters, each of the plurality of prescribed control parameters having a value or a range of values. The method further includes receiving a desired sleep comfort level for the sleep session, and adjusting one or more of the values or the range of values of the plurality of prescribed control parameters, to one or more adjusted values or range of values based on the desired sleep comfort level. The adjustments to the adjusted values are implemented to aid the user in achieving the desired sleep comfort level.

A gas sensor kit includes a gas sensor that measures a gas concentration of an exhalation gas of a subject, a gas introduction part that introduces the exhalation gas of the subject to the gas sensor and a gas supply unit that supplies a therapeutic gas to the subject. In the gas sensor kit, the gas supply unit includes a flow rate adjusting part that adjusts flow rate of the therapeutic gas.

Various embodiments are described herein for a controller for controlling the operation of a breathing assistance device that provides breathing assistance to a user. The controller comprises a processor that generates a respiratory index value that is determined during a current monitoring time period to detect a respiratory failure, or predict the respiratory failure when at least one PSG signal is measured. The respiratory index value is compared to a threshold to determine if the control signal needs to be updated to reduce or eliminate respiratory failure that the user is currently experiencing or to prevent a predicted respiratory failure from occurring.

A clear, soft and malleable plastic constructed face mask is provided that has an elastic strap that is used to secure the mask onto a patient's face. The mask comprises of a malleable aluminium strip on the top for easy molding of the mask around the patient's nose; a front opening covered with a paper filter; and two side openings covered with a paper filter. The mask provides supplemental oxygen through connection to a Y-shaped respiratory/ventilator circuit or standard oxygen tubing. The mask also allows the patient to breathe comfortably without a supplemental oxygen source. It has ribbed tubing for gas sampling. The mask allows a health care employee to visualize breathing on the clear plastic material. The mask provides filtration of aerosolized contaminants.

An anesthesia ventilator, for the automated ventilation of a patient, includes an expiratory port and an inspiratory port for connecting a ventilation tube facing the patient for a breathing gas, a breathing gas delivery unit, at least one breathing gas sensor for detecting an anesthetic gas concentration, at least one pressure sensor for detecting a pressure of the breathing gas, as well as at least one computer. The computer is configured to actuate the breathing gas delivery unit as a function of the detected pressure of a preset desired pressure value. The computer is further configured to perform an adaptation of the desired pressure value as a function of the detected anesthetic gas concentration.

A sensor arrangement (10) for a medical device (12), includes a sensor unit (11) for determining a carbon dioxide concentration in the measured gas, a branch line (14) for branching off the measured gas from a main line (15) of the medical device (12) and for sending the branched-off measured gas to the sensor unit (11). At least one heat and moisture exchanger filter (16, 17) filters the branched-off measured gas. A medical device (12) with the sensor arrangement (10), an exhalation valve (25) for the medical device (12) as well as a process for determining a carbon dioxide concentration are also provided.

A method and a device for measuring the content of at least one gas in exhaled air and to a device for ventilation. Due to the combination of a rapid respiratory phase sensor with a valve controllable depending on the detected respiratory phase, the use is made possible of a slower gas sensor to measure the content of a specific gas in the exhaled air during a certain period in the respiratory cycle so that the use of more economical and/or smaller and/or more accurate gas sensors is possible.

A method includes receiving data associated with a user during a sleep session. The received data is analyzed to determine, for a selected timeframe during the sleep session, whether the user is breathing through nostrils of the user. Based at least in part on a result of the analysis, a mask recommendation is communicated.