Humidifier apparatus for a respiratory apparatus includes a housing providing a gas flow path, a heater apparatus, and a water supply distribution member configured and arranged to deliver water vapor to the gas flow path. The water distribution member is provided to the housing and in thermal communication with the heater apparatus.

A ventilatory assist system and method are disclosed. The system comprises a tube for connection to a patient's airway, inspiratory and expiratory tube lumens connected to the tube, an inspiratory air source connected to the inspiration tube lumen, and a controller of air pressure in the expiratory tube lumen. The pressure controller is responsive to a physiological breathing signal representative of patient's inspiratory effort to allow air flow through the expiratory tube lumen during a patient's expiration phase, partially restricting the air flow through the expiratory tube lumen to a so minimum air flow during a patient's inspiration phase. During both respiratory phases, a unidirectional air flow is produced through the inspiratory and expiratory tube lumens to prevent air expired by the patient from being breathed again. The physiological breathing signal allows synchronization of the ventilatory assist with breathing efforts of the patient.

Provided is an endotracheal tube, which comprises a baffle, an endotracheal tube body and a pharyngeal suction catheter and is integrally formed. The pharyngeal suction catheter is fixedly connected with an outer wall of the endotracheal tube body. One end of the pharyngeal suction catheter is bent to form a front bent portion, a port of the front bent portion is closed and a side wall of the front bent portion is provided with two suction ports. In the case of oral endotracheal intubation, the pharyngeal suction catheter is introduced to the bottom of the pharynx as the endotracheal tube body is inserted into the weasand, and the pharyngeal suction catheter can stay there for a long period of time, enabling high efficiency of removal of pharyngeal secretions, the reduction of discomfort and adsorption injury of the patient, and the reduction of nursing workload.

A portable breathing machine includes a body case (100), wherein: a fan box (101), a cut-off device (108) and a control device (113) are arranged in the body case (100); a fan (8) is arranged in the fan box (101) through a fan noise reduction device (102); an air outlet of the fan box (101) is connected with an internal breathing tube (107); the cut-off device (108) is arranged on the internal breathing tube (107); an air outlet of the cut-off device (108) is connected with an external breathing tube (104) and a mask (105); the fan noise reduction device (102) includes a lower flexible cover (3) and an upper flexible cover (5); the lower and upper flexible covers cooperate to form an enclosed cavity for containing the fan (8). A working noise of the breathing machine is decreased to below 15 decibel.

Air impeller devices for providing assisted ventilation during spontaneous breathing are described. The devices include a motor; a fan driven by the motor, and a casing defining a housing for the fan. The housing is connectable through a single inlet and outlet port to a respiratory mask, wherein a pressure inside the housing is adjustable according to a rotational speed of the fan such that, in use, an inspiration air flow and an exhalation air flow circulate substantially through the inlet and outlet port. A kit including such an air impeller device and a respiratory mask is also disclosed.

A sleeping environment control system and method includes sensing a condition of environment to obtain a value of an environmental condition parameter, and then generating a value of a thermal sensation indicator according to the value of the environmental condition parameter. A physiological status of a user is sensed to obtain a value of a physiological status parameter. After a plurality of values of the thermal sensation indicator and a plurality of values of the physiological status parameter are collected, a regression analysis is performed to obtain a best value of the thermal sensation indicator according to the plurality of values of the thermal sensation indicator and the plurality of values of the physiological status parameter. A value of an environmental condition setting parameter is adjusted according to the best value of the thermal sensation indicator.

A near-patient humidification system provides vapor to a respiratory breathing circuit. The system includes an expiratory gas conduit and an inspiratory gas conduit. A patient coupling member is provided for coupling the expiratory and inspiratory gas conduits to a patient interface. A vapor injection unit is located at least partially within the housing of the patient coupling member. The vapor injection unit heats a supply of fluid into vapor and injects the vapor into the inspiratory gas passage of the patient coupling member at a vapor injection location for providing moisture to the inspiratory gas flow. A method of simultaneously and independently controlling the temperature and humidity of inspiratory gas in a respiratory breathing circuit is performed by injecting vapor having a temperature determined as a function of measured temperatures and measured humidities of the breathing gas at different locations along the breathing circuit.

Systems and methods to estimate, on a breath-by-breath basis, the fraction of inhaled oxygen during ventilation of a subject. The fraction of inhaled oxygen may be based on exhaled tidal volume, a volume of dead space within the subject interface, leaked exhalation volume, and subsequently inhaled tidal volume and leaked inhalation volume.

Described is an apparatus for oxygenation and/or CO2 clearance of a patient, comprising: a flow source or a connection for a flow source for providing a gas flow, a gas flow modulator, a controller to control the gas flow, wherein the controller is operable to: receive input relating to heart activity and/or trachea gas flow of the patient, and control the gas flow modulator to provide a varying gas flow with one or more oscillating components with a frequency or frequencies based on the heart activity and/or trachea flow of the patient.

A method and apparatus for humidifying breathable gas provided to a user includes providing a breathable gas, producing moisture or water derived from ambient environmental surroundings, e.g., via condensation and/or dehumidified air, and directing the breathable gas along an air flow path. The air flow path optionally includes access to at least a portion of the moisture or water for increased humidification of the breathable gas, for delivery to the user.