A passive valve for use as a fixed leak valve. The valve includes a body having an internal chamber, first and second body ports in fluid communication with the chamber with the first port configured for fluid communication with a patient connection and the second body port configured for fluid communication with a ventilator, a body passageway in fluid communication with the chamber and with ambient air exterior of the body, and a check valve seal positioned to seal the body passageway to permit the flow of gas within the chamber through the body passageway to the exterior of the body and to prevent the flow of ambient air exterior of the body through the body passageway into the chamber. In alternative embodiments, the valve is incorporated into the patient connection or constructed as a separate part connectable to the patient connection.

A passive valve for use as a fixed leak valve. The valve includes a body having an internal chamber, first and second body ports in fluid communication with the chamber with the first port configured for fluid communication with a patient connection and the second body port configured for fluid communication with a ventilator, a body passageway in fluid communication with the chamber and with ambient air exterior of the body, and a check valve seal positioned to seal the body passageway to permit the flow of gas within the chamber through the body passageway to the exterior of the body and to prevent the flow of ambient air exterior of the body through the body passageway into the chamber. In alternative embodiments, the valve is incorporated into the patient connection or constructed as a separate part connectable to the patient connection.

The invention relates to an apparatus and a method for controlling a ventilator by means of a detection unit for control commands, wherein the detection unit detects control commands of a user in a detection region of the detection unit, the detection unit comprising at least one sensor for control commands, a memory, an apparatus for producing digital control commands and an interface for coupling to the ventilator and for transmitting the control commands to the ventilator.

A respiratory treatment apparatus configured to provide a flow of breathable gas to a patient, including a breathable air outlet, an outside air inlet, and an pneumatic block module, wherein the pneumatic block module includes: a volute assembly including an inlet air passage, a mount for a blower and an outlet air passage; the blower being mounted in the mount such that an impeller of the blower is in a flow passage connecting the inlet air passage and the outlet air passage; a casing enclosing the volute assembly, wherein air passages within the casing connect air ports on the volute assembly, wherein the inlet air passage of the volute assembly is in fluid communication with the outside air inlet and the outlet air passage of the volute assembly is in fluid communication with the air outlet.

The technology relates to a variable flow vent assembly for a conduit mask configured to deliver a flow of breathable gas at a positive pressure to an airway entrance of a patient and allow a flow of exhaled gas from the airway of the patient to exit the vent assembly to ambient. The variable flow vent assembly is further configured to include a valve, wherein the valve is arranged to allow for the regulation of the flow of breathable gas to the patient and the regulation of the vent flow rate of exhaled gas leaving the vent assembly to ambient. By changing certain characteristics of the valve and by tuning the valve through variants in design, the resultant vent flow rate for a given air pressure can be altered in order to obtain the best treatment outcome for the patients individual requirements.

Medical techniques include systems and methods for administering a positive pressure ventilation, a positive end expiratory pressure, and a vacuum to a person. Approaches also include treating a person with an intrathoracic pressure regulator so as to modulate or upregulate the autonomic system of the person, and treating a person with a combination of an intrathoracic pressure regulation treatment and an intra-aortic balloon pump treatment.

An adaptor for generating flow includes an adaptor housing body. The distal end of the body has an oxygen inlet that extends extending into an interior of a distal air intake portion. The oxygen inlet has a nozzle with at least two apertures for directing oxygen into an interior of a distal air intake portion. The distal air intake portion includes at least one air inlet port to allow air to be drawn into the interior of the distal air intake portion, and a flow-resisting media covering at least a portion of the at least one air inlet port.

A connector for connecting an oxygen delivery device to a patient interface. The connector includes a housing with a first lumen for delivering oxygen and a second lumen to allow pressure to be measured. A third optional lumen may allow for gas sampling. The housing surrounding the first and second lumen has a portion that includes encoding for determining the type of patient interface being used, as well as a depth indicator sensor.

A mask system includes a frame defining a breathing chamber, a cushion provided to the frame and adapted to form a seal with the patient's face, and a shroud provided to the frame and adapted to attach headgear. The shroud includes a retaining mechanism structured to connect the shroud to the frame. The retaining mechanism includes both a taper lock arrangement and a retaining clip arrangement.

A shroud for a mask system includes a retaining portion structured to retain a frame, a pair of upper headgear connectors each including an elongated arm and a slot at the free end of the arm adapted to receive a headgear strap, and a pair of lower headgear connectors each adapted to attach to a headgear strap. The retaining portion, the upper headgear connectors, and the lower headgear connectors are integrally formed as a one piece structure.