A sealing arrangement for use in a patient interface device. The sealing arrangement includes a nasal pillow having a sealing surface structured to sealingly engage a surface of the patient at or about the airway. A first magnetic material is disposed in or the nasal pillow. A carrier member is positioned across a nose of the patient. Finally, a second magnetic material is positioned in or on carrier member. The first magnetic material and the second magnetic material magnetically interact in a manner that the sealing surface of the flexible member toward the surface of the patient responsive to the flexible member being disposed at or about the airway and the second magnetic material is disposed at a corresponding position to interact with the first magnetic material.

An interface for positive pressure therapy includes a mask assembly and a headgear assembly. The mask assembly comprises a mask seal that is adapted to underlie the nose. The mask seal extends up the lateral sides of the nose. The mask seal has a primary seal below the nose and a secondary seal alongside the nose.

A breathing apparatus configured to be worn on the face of a person is disclosed. The apparatus comprises a breathing manifold having an internal space with openings for a connection to the nasal passage and mouth of the user and openings for one or more gas-exchange ports. An armature holds the manifold in position relative to the face and provides pressure against the nose and mouth to provide a sealed interface between the internal volume of the apparatus and each of the nose and mouth. According to a salient aspect, the armature is configured to securely hold the breathing apparatus to the person's face without requiring additional securements such as head straps. The armature also includes one or more attachment points for supporting other components of the breathing apparatus including, for example, an air-inlet filter and an exhaust valve, through which air can be exchanged.

A patient interface may include a plenum chamber and a positioning and stabilising structure. The plenum chamber may include a seal-forming structure and a fascia portion. At least a medial portion of the fascia portion is flexible. In embodiments, the patient interface may include a rigidiser to control flexing of the fascia portion.

Disclosed herein are embodiments describing nonrebreather facemasks for efficiently and comfortably delivering oxygen to patients. One embodiment describes a cup-shaped pliable facemask that is suited to cover and seal a patient's nose, mouth, and cheeks within the cup-shaped facemask. Certain other embodiments describe an inlet tube outwardly extending from the facemask at an angle in line with the pathway of a patient's nostrils to better provide oxygen directly into a patient's nose. Other embodiments envision varying facemask's stiffness for improved comfort and sealing against the patient's face. While other embodiments envision a reduction in dead space of a facemask when worn by a patient to improve oxygen efficiency used by the patient.

Disclosed is a nasal ventilation mask having separate ports to monitor end-tidal CO.sub.2 expulsion integrated into the mask in order to monitor end-tidal CO.sub.2 expelled nasally or orally. Also disclosed is a CPR mask for nose-to-mouth and/or mouth-to-mouth resuscitation, having a body shaped to cover the nose and/or mouth of a victim, the mask including a CO.sub.2 absorber for eliminating at least in part rescuer's exhaled CO.sub.2 delivered to the victim.

A patient interface for use in delivering a flow of breathing gas to an airway of a patient. The patient interface includes a front portion and a rear portion coupled to the front portion. The front portion and the rear portion together define a cavity therebetween which is structured to receive the flow of breathing gas. The rear portion includes a support layer disposed directly adjacent the cavity, the support layer having a region having a plurality of first thru-holes structured to receive the flow of breathing gas from the cavity. The rear portion further includes a patient engaging layer structured to engage the patient at or about the airway of the patient, the patient engaging layer including at least a second thru-hole structured to receive the flow of breathing gas from the plurality of first thru-holes.

A resuscitation training device attaches to an air delivery ventilation device to determine if there is a proper mask seal between a live training subject or a training manikin. A pressure sensor attached to the resuscitation training device provides instant feedback to determine if there is a proper seal. The resuscitation training device includes a tubular member having an air metering orifice in fluid communication with the mask and the pressure sensor.

A method and apparatus can be used in the selection of correctly sized respiratory interfaces. The method includes the use of light beams to project sizing markers onto a patient's face, which enables the size of the patient's facial features to be measured relative to a set of interface sizes. A sizing apparatus can include a light source and beam splitters that will refract and project the light source into a series of beams that can be aligned on a patient's face in order to measure the features of the patient.

Apparatus and methods provide control for generation of a flow of air to a patient's airways for different respiratory therapies. The pressure and a flow rate may be simultaneously controlled so as to provide a pressure therapy and a flow therapy. The system may include one or more flow generators, in which the control of the pressure and flow rate may include altering the output of one or more of the flow generators and/or an optional adjustable vent. The pressure and flow rate may each be held at a constant. One or both of the pressure and flow rate may also vary in accordance with a desired therapy. The air may be provided via a patient interface that includes a vent to atmosphere, which may be the adjustable vent. The vent may be actuated by a controller to implement the simultaneous control of pressure and flow rate of the air.