Abstract: A mechanical ventilator closed loop control system, methods, and apparatus are disclosed. In an example, a mechanical ventilator performs a respiratory treatment for a patient according to respiratory treatment settings, which include at least one ventilation mode. During the treatment, the mechanical ventilator receives and/or determines physiological parameter values from one or more physiological sensors. The physiological parameters may be patient neurological parameters, metabolic parameters, circulatory parameters, and/or respiratory parameters. The mechanical ventilator uses one or more closed loop control algorithms and the physiological parameter values to determine at least some of the respiratory treatment settings and/or the ventilation mode is to be adjusted. After making the determination, the mechanical ventilator adjusts the respiratory treatment so that the treatment reflects a current health status of the patient.

Abstract: Examples described herein include multiple control systems for medical devices, such as medical ventilators. Examples of multiple control of a medical ventilator in an isolation room are described.

Abstract: Examples described herein include multiple control systems for medical devices, such as medical ventilators. Examples of multiple control of a medical ventilator in an isolation room are described.

Abstract: Examples described herein include systems and ventilators for performing automated ventilation procedures. The automated ventilation procedure may automatically adjust ventilator parameters (e.g., PEEP) to perform a procedure such as a recruitment maneuver, PEEP titration, a recruitability assessment, or combinations thereof.

Abstract: A humidifier system for heating and humidifying respiratory gases has a housing with an inner chamber, a first port at the first end for connection to a ventilator breathing circuit and a second port at the second end for connection to a patient to supply respiratory gases to the patient and to receive exhaled gases from the patient. A body of heat moisture exchange (HME) material is located within the chamber, and a water permeable device is also located within the chamber. The housing has a water refill inlet communicating with the water permeable device. A water supply outside the housing is connected to the water refill inlet to supply water to the water permeable device. A heater mounted outside the housing supplies heat to the housing and maintains the housing at a selected temperature.

Abstract: A humidifier system for heating and humidifying respiratory gases has a housing with an inner chamber, a first port at the first end for connection to a ventilator breathing circuit and a second port at the second end for connection to a patient to supply respiratory gases to the patient and to receive exhaled gases from the patient. A body of heat moisture exchange (HME) material is located within the chamber, and a water permeable device is also located within the chamber. The housing has a water refill inlet communicating with the water permeable device. A water supply outside the housing is connected to the water refill inlet to supply water to the water permeable device. A heater mounted outside the housing supplies heat to the housing and maintains the housing at a selected temperature.

Abstract: A positive airway pressure assist breathing apparatus or ventilator system has a gas delivery unit, an inspiration line connected to the output of the gas delivery unit for connecting the gas delivery unit to a, patient during an inspiratory phase of each breath, and an expiratory unit for controlling exhausting of gases from the patient during an expiratory phase of each breath. A pressure sensor senses gas pressure in the system, and a control unit controls pressure of gas supplied to a patient in each inspiratory phase based on a pre-set target pressure.

Abstract: A system and method of controlling the termination of the inhalation phase in a pressure support ventilation system is disclosed, in which an expiratory trigger sensitivity, or ratio of inspiratory flow rate to peak inspiratory flow rate at which the inspiration phase is terminated, is varied in proportion to variations in a calculated respiratory time constant. The system includes sensors for monitoring pressure and flow of gas during each breath, and, based on the sensor outputs, calculates the respiratory time constant for one breath or a series of breaths. The expiratory trigger sensitivity is automatically increased with increasing patient respiratory time constant, providing a closed loop control of expiratory trigger sensitivity. The expiratory trigger sensitivity may also be varied in response to changes in supra-plateau pressure.