Abstract: A cushion for a respiratory mask assembly includes a frame-connecting portion, a face-contacting portion, and a gusset portion disposed between and joining the frame-connecting and face-contacting portions. The gusset portion includes at least one perimetrical region which includes a laterally projecting exterior gusset section and a laterally projecting interior gusset section.

Abstract: A patient interface assembly includes a flexible cushion configured to sealingly engage the patient's nares and a frame with a pair of flexible extending members that extend laterally from opposite sides of the frame. The frame and the flexible cushion together form a chamber. The patient interface assembly also includes a positioning and stabilising structure configured to maintain the flexible cushion in engagement with the patient's nares. The positioning and stabilizing structure has a pair of headgear straps. Each headgear strap is connected to a respective one of the flexible extending members. The flexible extending members do not form an airflow path for the breathable gas. The headgear straps have a multi-layered structure, at least one layer being made of fabric and at least one layer being made of plastic. In addition, the at least one plastic layer is a rigidizer that adds rigidity to the respective headgear strap.

Abstract: 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.

Abstract: An apparatus for supplying a patient with oxygen in emergency and/or in conjunction with CPAP devices. The apparatus includes a face mask connected to a number of quick pull adjustment devices that adjust the top and bottom of the face mask, respectively. After being slid over the head of a patient, a paramedic or other user pulls a top strap followed by a bottom strap. No further adjustment is needed in order to form a tight and secure fit on the patient between the face mask and the nose and mouth region of the patient's face. During use, a CPAP inlet or tubing, resuscitation bag, or other means for delivering oxygen is connected to an inlet of the face mask. The face mask is removed from the patient by manipulating each of the quick pull adjustment devices and then pulling the top strap and bottom strap there through.

Abstract: A patient interface may include a plenum chamber pressurisable to a therapeutic pressure; a seal-forming structure constructed and arranged to form a seal with a region of the patient's face; a positioning and stabilising structure to provide an elastic force to hold the seal-forming structure on the patient's head, the positioning and stabilising structure may include a tie; a vent structure; a decoupling structure configured to provide a fluid connection between the plenum chamber and an air circuit for the flow of air at the therapeutic pressure for breathing by the patient; and a frame having at least one tie attachment structure to receive the tie, wherein the frame is configured to be resiliently movable in any direction having at least one of a component parallel to the patient's sagittal plane, a component parallel to the patient's coronal plane, a component parallel to the patient's Frankfort horizontal plane.

Abstract: An EEG monitor adapted for being arranged in the ear region of a person and including a housing (11) holding a power supply (25) and an EEG signal processor (10). The EEG monitor (5) includes an EEG sensing part (12) having EEG electrodes (17). The EEG sensing part (12) is adapted for arrangement subcutaneously at the scalp or in the ear canal of the person, and the housing (11) is individually shaped to fit behind or above an ear of the person and into the cleft between a pinna and the skull of the person.

Abstract: A device for provision of oxygen masks has a container, which can be closed by a cover, for accommodating one or more oxygen masks, at least one extendable arm having an outer end, and a driving device. The outer end is coupled to at least one oxygen mask. The arm is designed to adopt a storage position, wherein the arm is arranged completely within the container, and an extended position, wherein the outer end is extended out of the container and the arm holds the at least one oxygen mask coupled thereto laterally at a distance from the container. For extension, the driving device is coupled to the arm. The arm has an end piece, on which a wound-up hose can be releasably fixed. A fixing device is formed on the end piece in such a way as to release the wound-up hose when the extended position is reached.

Abstract: Breathing mask comprising a shell and a harness, wherein: the breathing mask also comprises a folding system adapted to make the harness move from an extended position to a folded position, the folding system also comprises a pulling device and a guide device, the pulling device has a connecting portion connected to the harness and a gripping portion, the guide device is connected to the shell, the pulling device is free to move between a first position and a second position, and the guide device cooperates with the pulling device to guide the pulling device between the extended position and the folded position.

Abstract: Embodiments provide methods for storing a respiratory mask. In one embodiment, the respiratory equipment may include a respiratory mask having a front side and a rear side and a cavity having an opening in the rear side. There may also be provided an inflatable harness adapted to maintain the respiratory mask against the user face, and a storage element comprising a housing. In one embodiment, the method may include pulling on the harness on the front side of the respiratory mask in order to place the harness on the respiratory mask in an storage position outside said cavity, and maintaining the harness on the respiratory mask in the storage position and inserting the respiratory mask into the housing of the storage element.

Abstract: A sanitary mouth shield assembly including a headset with multiple locations of adjustability, both linear and rotational, in order to accommodate a variety of head sizes. A pair of side portions support therebetween a bridging and arcuate extending, length adjustable band. A shield sub-assembly is supported by the headset and includes elongated and arcuate side supports which are rotatably and adjustably secured at first ends to exterior side locations of the side supports. The shield sub-assembly is rotatably supported to extending ends of the sides supports and in turn exhibits a combination arcuate and planar shape. A base component of the shield subassembly includes a pair of end supported clips. A fibrous filter element is sandwiched between an inner surface of the base component and an attachable retaining component, the retaining component including lateral projections which seat within the clips to secure the subassembly in place.

Abstract: A respiratory equipment (1) comprising: a respiratory mask (10) adapted to be applied in a use position around a nose and a mouth to a user, an inflatable harness (20), a gas supply tube (2) connected to the respiratory mask at a downstream end (2b), a storage element (30) comprising a housing (32) adapted to store the respiratory mask (10) in a storage position, and a retaining device (40) including a leash (46) and a releasably holding portion (42, 44) connected to the leash (46), the leash having a connecting portion (47) connected to the harness (20) and a securing portion (45) connected to the storage element (30).

Abstract: A shroud (1020) for a mask system includes a retaining portion structured to retain a frame (1040), a pair of upper headgear connectors (1024) each including an elongated arm (1026) and a slot (1027) at the free end of the arm adapted to receive a headgear strap, and a pair of lower headgear connectors (1025) 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.

Abstract: A shroud (1020) for a mask system includes a retaining portion structured to retain a frame (1040), a pair of upper headgear connectors (1024) each including an elongated arm (1026) and a slot (1027) at the free end of the arm adapted to receive a headgear strap, and a pair of lower headgear connectors (1025) 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.

Abstract: The invention relates to an emergency oxygen device for passenger of an aircraft, including a chemical oxygen generator including a chemical oxygen source and an activation unit for initiating a chemical reaction of the chemical oxygen source producing oxygen, at least two oxygen masks each connected with the chemical oxygen generator for receiving an oxygen fluid flow from the chemical oxygen generator after the activation unit has initiated the chemical reaction, and a mechanical activation assembly for activating the activation unit. The activation unit is activated by a mechanical force exerted onto an activation element of the activation unit and the mechanical activation assembly includes for each of the at least two oxygen masks a first mechanical connection from the activation element to a fixation element releasably mounted to the emergency oxygen device and a second mechanical connection from the fixation element to the oxygen mask.

Abstract: A forehead support for a respiratory mask includes a forehead support arm structured to extend from a frame and a forehead support pad provided to the arm. The forehead support pad includes upper headgear connectors adapted to engage upper headgear straps and a flexible region. The upper headgear connectors are constructed of a first material and the flexible region is constructed of a second material that is more flexible than the first material to allow adjustment of the distance of the forehead support pad from the patient's forehead in use.

Abstract: Applicants have disclosed an “Articulating Headgear Connector for Respiratory Masks” which allows three-dimensional movement of the headgear connector to alleviate the mechanical forces incurred from a wearer's head movement, and thus maintain an effective seal. In the preferred embodiment, the invention comprises: a CPAP mask having a plastic shell; the mask has a stub tube extending outwardly from the shell; a headgear connector mounted loosely onto the stub tube; a T-shaped nib on the elbow guides the headgear's movement; whereby the headgear connector can slide forward on the stub tube (i.e., move along the Z axis), guided by the nib; and, whereby the headgear connector can rock (i.e., about the X-Y axes) and its sides seesaw on the stub tube (i.e., along the Z-axis), with the amount of rotation and seesawing limited by the nib.

Abstract: A sensor support arm, adapted for use with a breathing mask such that the arm is extendable underneath a sealing surface of a breathing mask is disclosed. The arm is adaptable at one end for fixing on to equipment worn by a user, having a sensor disposed at an opposing end positionable in the interior of a breathing mask. The arm has lead connections necessary for the sensor extending along the arm. The arm has a greater width than thickness and comprises a flexible material such that it is flexible about both longitudinal and transverse axes. The arm is provided with a substantially planar side. A breathing mask having a freely self-supporting sensor arm is also disclosed.

Abstract: The invention is related to a container for a supply unit, in particular an oxygen supply unit and/or a passenger supply unit (PSU), having a container well at least, wherein a container door can be pivotably joint at a container well's edge, in particular pivotable about a hinge at the container well's edge, wherein the container well at least consists of a sheet moulded compound material moulded from a composite of thermoset sheet material based on fiber-reinforced polymer matrices mainly.

Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.

Abstract: The present invention relates to a device for delivering a supply of gases to a patient. The device includes a patient interface and connecting member. The connecting member is preferably a L-shaped swiveled connector that is capable of being fixed into one of two positions, a first position where the connector is freely rotatable within the patient interface, and a second position where an interference between the interface and connector prevents the free rotation of the connector within the patient interface, The present invention further relates to a connector that has outlet means, which includes at least one outlet vent and a funnel, which in use directs and passes a substantial portion gases expired from the patient through the outlet vent or vents.

Abstract: A respirator assembly has a respirator hood having a front side that includes a visor and a back side that includes an air inlet opening. The respirator assembly also has a shape stable manifold having an air inlet conduit extending through the air inlet opening of the hood and having, within the hood, a plurality of air delivery conduits in fluid communication with the air inlet conduit.

Abstract: A retainer for a single-sided modular cannula portable gas delivery system to secure a mouthpiece or nosepiece, a gas delivery pack and a single-sided modular medical cannula tubing assembly. An over-the ear secured modular mounting sleeve having an elongated central semi-circular cavity for securing a nasal cannula. A pair of engaged discs allow the cavity to rotate. The pair of discs have a plurality of elevated ridges that lock the semi-circular cavity in angular relationship to the ear piece. The ear piece has a malleable metal insert that is located at least partially within the ear piece that allows the ear piece to be bent for comfort.

Abstract: The invention relates to an emergency oxygen supply device for aircraft inhabitants, comprising a container, wherein an oxygen mask is positioned inside said container, a releasable cover and a latch mechanism comprising a latch locking said cover lid. According to the invention said latch mechanism comprises a permanent magnet interacting with a magnetisable element an exerting a magnetic holding force onto said magnetisable element to hold said latch in a locking position, wherein a solenoid is positioned adjacent to the permanent magnet, said solenoid being connected to a control unit said control unit being adapted to receive an opening signal and to provide a current flowing through said solenoid in response to such opening signal, wherein said solenoid is arranged and dimensioned such that the current flowing through said solenoid reduces said magnetic holding force to such a level that the latch is released in a n unlocking position.

Abstract: An accessory cap for a respiratory cartridge includes a housing having a front wall and a side wall which cooperate to define an interior cavity. The side wall includes a retaining formation configured and arranged to releasably engage and hold the housing on the respiratory cartridge. The housing includes a downwardly facing air passage configured to allow air to pass from an exterior environment to the interior cavity. The accessory cap further includes a pre-filter support web removably received within the interior cavity and spaced inwardly from the front wall. The housing and the pre-filter support web form a pre-filter cavity within the interior cavity adjacent to the front wall. The accessory cap can function as a standalone shower cap, or a pre-filter media can be optionally inserted into the pre-filter cavity so that the accessory cap functions as a combination pre-filter and a shower cap.

Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a headgear assembly which are adapted to being remove ably magnetically coupled to one another at a desired angular orientation therebetween.

Abstract: Embodiments of the invention relate to a stowage box for a breathing mask that includes a frame forming a receptacle for the mask, the frame having an open face for inserting and extracting the mask, and a pneumatic assembly to control the feed of a breathing gas under pressure to the breathing mask. The pneumatic assembly is adapted to close the feed of breathing gas when the mask is inserted into the frame and to open the feed of breathing gas when the mask is extracted from the frame.

Abstract: The disclosure discloses an eye protection adjunct that provides protection to a person's eyes and resembles a normal pair of eyewear, but contains a hidden facepiece that deploys into a face protection system for the eyes, face, nasal and pharyngeal openings.

Abstract: A medical device may include a patient interface for use in a breathing assistance system, an electronic device coupled to the patient interface, and one or more electrical conductors at least partially integrated with the patient interface. The patient interface may include a connection end configured for receiving gas communicated by a gas delivery apparatus, and a patient end configured for insertion into or more breathing passageways of a patient. The one or more electrical conductors at least partially integrated with the patient interface may be capable of facilitating communication of electrical signals between the electronic device and the gas delivery apparatus when the patient interface is communicatively coupled to the gas delivery apparatus.

Abstract: A breathing mask has a mask body, a mounting bracket and a universal connecting tube. The mask body has a first universal socket bracket having a first spherical recess. The mounting bracket is mounted on the mask body and has a second universal socket bracket having a second spherical recess. The universal connecting tube is mounted universally pivotally in the mask body and has a ball joint mounted universally rotatably in the first and second spherical recesses. The universally rotating ball joint allows a breathing tube connected to the universal connecting tube to pivot to any orientations and prevents the breathing tube from over bending.

Abstract: Embodiments provide methods for storing a respiratory mask. In one embodiment, the respiratory equipment may include a respiratory mask having a front side and a rear side and a cavity having an opening in the rear side. There may also be provided an inflatable harness adapted to maintain the respiratory mask against the user face, and a storage element comprising a housing In one embodiment, the method may include pulling on the harness on the front side of the respiratory mask in order to place the harness on the respiratory mask in an storage position outside said cavity, and maintaining the harness on the respiratory mask in the storage position and inserting the respiratory mask into the housing of the storage element.

Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame having a front surface and a rear surface, opposite the front surface, and adapted in use to face the patient. The frame defines an inner wall and an outer wall extending from the rear surface, the inner and outer walls being spaced to define a channel therebetween. A cushion is removably attachable to the frame such that the cushion and frame are repeatably engagable with and disengagable from one another. The cushion includes a side wall to be inserted into the channel of the frame, the side wall having a first interlocking surface that engages a second interlocking surface provided in the channel when the cushion and frame are engaged with one another. The first and second interlocking surfaces interlock with one another to removably attach the cushion to the frame.

Abstract: A respiratory mask has an adjustable forehead support member that is simple and inexpensive to manufacture. The forehead support member may be adjusted by rotating a forehead pad about an off-center bore or by bending an angular adjustment beam. The mask has a mask cushion with an accordionate membrane having at least two hinged portions. The mask may be constructed with a mask frame, the mask cushion, and the forehead support member molded as one piece.

Abstract: The invention relates to an apparatus for ejecting an oxygen mask. The apparatus comprises a housing (3) provided with a housing opening (9) and having a housing cover (5) which can be moved between a closed position (7) in which the housing opening (9) is covered at least in sections by the housing cover (5), and an open position (50), an oxygen mask (12; 13) disposed inside the housing (3), in the closed position (7), and an ejector strap (20; 22) having one end (25; 27) which is connected to the housing cover (5). The invention is further characterized in that the ejector strap (20; 22) co-operates in the closed position (7) with a side of the oxygen mask (12; 13) which faces away from the housing cover (5), such that the oxygen mask (12; 13) is ejected from the housing (3) by the housing cover (5) moving into the open position (50).

Abstract: A manual lung ventilation device and method suitable for acute manual respiratory resuscitation and lung ventilation of a person are disclosed. The manual lung ventilation device includes a nasal interface in fluid communication with a flexible chamber. The nasal interface being held in the proper position on the person by a headgear and at least one securing device adapted to connect the nasal interface to the headgear. The device may be formed as a single component to allow an operator to rapidly position the device on the person to be ventilated and operate the device with one hand.

Abstract: The invention discloses a safety mechanical system by which emergency oxygen is delivered to motor vehicle occupants during an accidental water submersion of the vehicle. The system utilizes an oxygen filled tank located in the trunk, or another concealed area. The tank is connected to a manifold system with an automatic valve. The valve is activated and opened when a series of sensors detects that the vehicle is partially or fully submerged. Upon such detection, the valve is opened and oxygen is delivered through the manifold, then to a series of flexible tubes to a set of drop down masks that automatically deploy from an overhead console in the vehicle's headliner. The drop down assembly is of an adequate length of coiled hose similar to that found on a commercial airliner for oxygen use during sudden decompression. With such an installed system, vehicle occupants are provided with a mask and oxygen until they can be rescued or escape on their own.

Abstract: The present invention provides a method and apparatus for storing breathing masks in a tall and narrow space and deploying the masks from that space. The apparatus may be embodied as a removable cartridge containing a breathing mask assembly housed within a frame. The cartridge is comprised of a first side and second side which can move relative to the frame. The first side includes a hinge. In operation, the cartridge slides relative to the frame and rotatably opens via the hinge after the cartridge substantially exits the frame. A breathing mask is released to a user after the first and second halves rotatably separate.

Abstract: Mask ports 180 for attaching supplemental oxygen tubes 510 or measurement devices to a respiratory mask are downwardly directed and recessed into the base 110 of the mask frame 100. The ports may comprise a pair of downwardly extending tubular spigots 185 each housed in a respective recess 190 in the base 110, with a shallow bridging recess 290 therebetween for receiving a bridging piece 300 of a closure cap 280.

Abstract: A breathing assembly for aircraft comprising a storage unit, a breathing mask and a releasable securing device. The storage unit has a guiding surface extending perpendicularly to an elevation direction and a maintaining element. The breathing mask comprises a rigid support having a sliding surface adapted to slide in contact with the guiding surface of the storage unit, along a sliding direction between a storage position and an exit position. The support further has a maintaining element. In the storage position, the sliding surface of the support is prevented from moving away from the guiding surface of the storage unit along the elevation direction at the distal end by engagement of the maintaining element of the support with the maintaining element of the storage unit.

Abstract: A respiratory half-mask, including a mask body having a front or side filters, and exhalation valves, a head support with two side straps emanating from support, and a strap guide part fastened on the mask body for sliding the mask body along the side straps from a usage position for covering a mouth and a nose of the user into a position for exposing the face of the user. At least one clamping element is adjustably attached to the strap guide part for clamping the side straps to the strap guide part and for fixing the mask body on the two side straps in a usage position.

Abstract: An oxygen tubing holder may support oxygen tubing away from a person's ears by providing a clip that may attach to a hat, headband or the like. The oxygen tubing holder may be placed near the ears, thereby permitting standard oxygen tubing to be used with the oxygen tubing holder. The oxygen tubing holder may include a clip end for attaching onto, for example, a hat or headband, and a U-shaped tubing holding end.

Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a headgear assembly removably attachable to the frame. The headgear assembly includes a pair of side portions and a rear portion that interconnects the pair of side portions. The pair of side portions includes at least one strap. The rear portion has at least one strap constructed of at least two layers of material. One of the layers of material has a more rigid construction than the other of the layers of material to resist compression of the at least one strap of the rear portion in a first direction which resists movement of the at least one strap of the pair of side straps in the first direction.

Abstract: A device used for ventilation includes a ventilation mask that can be connected to a respiratory gas hose. The ventilation mask has a respiratory gas hose coupling that is movably connected by a joint with the base of the ventilation mask. The joint is a ball-and-socket joint, which has an inner part that is shaped like a spherical segment and an outer shell for guiding the inner part. The outer shell is constructed from at least two shell segments that can be connected with each other.

Abstract: A patient mask assembly for positive pressure ventilation includes a brace which clips to the mask and provides attachment locations for headgear straps in alternative positions to those attachment locations which may be provided by the mask. The brace may also provide a mask stabilizing portion.

Abstract: A passenger oxygen mask includes a carrier body and an annular holder which is provided on the carrier body and which is with an opening for fastening a pull device. A slot through which the pull device can be introduced into the opening is provided in the annular holder.

Abstract: A method of intercepting controlled quantities of air exhaled from at least one of two nostrils on an individual's nose to permit inhalation of the intercepted air, including the steps of: providing an air flow intercepting apparatus; and placing the air flow intercepting apparatus in an operative position relative to the individual's nostrils so that as the individual inhales and exhales during repeating breathing cycles: a) a first quantity of exhaled air flows past the air flow intercepting apparatus; and b) a second quantity of exhaled air impinges upon the air flow intercepting apparatus so as to at least one of: i) stagnate; and ii) be redirected by the air flow intercepting apparatus so that at least a portion of the second quantity of exhaled air is drawn into the individual's nostrils as the individual inhales.

Abstract: The present invention provides a symmetrical face mask suitable for use with one hand that allows an operator to provide a reliable seal with the patient's face with his/her hand and arm in an anatomically favorable position for application of a user's physical strength. In general, a user may reach at an acute angle to the plane of their chest and engage the invention mask with their hand in a manner the user may shake another person's hand, i.e., with a distal portion of their radius and ulna arranged essentially vertically so that side to side motion of the hand translates to forward and rearward motion of a mask shell while a user reserves full bi-directional rotational capability of their arm for forward or rearward rotation compression of the mask shell while, at the same time, reserving full and lever-efficient, bi-directional pushing and pulling range of a user's arm for greater pressure of the mask shell to a right or left side of a user's fleshy cheek.

Abstract: A device for oxygen supply of a user in an aircraft comprising a breathing mask (20), a stowage box (1) for the breathing mask and an oxygen supply hose (22) having one end connected to the stowage box and the other end connected to the breathing mask, wherein the device further comprises means (3) to fix the stowage box in a ceiling of the aircraft, an aperture on the bottom side of the stowage box closed by a door (7) and a leash (28) connected to the stowage box by one end and to the breathing mask by the other end so that, when the door is open, the mask falls and is kept hovered by the oxygen supply hose and the leash.

Abstract: A versatile, multi-port, intubation-permitting oxygen mask is provided including two diaphragms (nasal and oral) each configured with a continuous, flexible, modifiable membrane from which an instrument-access port may be manually constructed, when and if needed. The novel oxygen mask preferably includes a multiple-inlet port having a standard oxygen tube connector and an interchangeable breathing-therapy device connector, a carbon dioxide sampling port, an exhaust port, and a nose clip. The mask can be worn as a standard oxygen mask during traditional oxygen therapy, yet quickly converted into an intubation mask. The clinician manually perforates the nasal and/or oral diaphragm to create a point and size of entry perfectly matched to the requirements for a variety of procedures that may be performed involving nasally or orally introduced scopes or probes—without disturbing the ongoing benefits of increased oxygen saturation and continuous monitoring of expired gases.

Abstract: A respiratory mask includes: a mask body including a mask shell, and a mask cushion connected to a rear side of the mask shell; a front cover disposed in front of and hinged to the mask shell, and having a support arm extending upwardly; a forehead support unit having a forehead frame connected to a top end of the support arm, and a forehead pad connected to a rear side of the forehead frame; and an adjustment unit connected to at least one of the mask shell and the front cover, and operable to produce relative movements of the mask shell and the front cover so that the mask body can abut against the user's nose with an appropriate abutment pressure.

Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.