A system of breathing arrangements for delivering breathable gas to a patient includes at least first and second cushion components, e.g., full-face, nasal, nasal prongs, nose tip, and/or a combination of any of the above, including a nasal or full-face cushion and nasal prongs/nozzles combination, etc., that are different from one another in at least one aspect, and a common frame assembly configured to support each of the first and second cushion components. Various embodiments are directed to a full-face or nasal mask used with a frame having lateral connector portions having a stiffening member. The mask assembly may include a nose height adjustment device for the height of the cushion, or a cushion adjustment member by which the position of the cushion may be adjusted relative to the frame. The mask assembly may include a chin strap assembly.

Mask assemblies, breathing circuits and related components include configurations for reducing condensation within the mask and/or inhibiting or preventing condensation from coming into contact with a user of the mask. The mask assemblies can incorporate heating elements (such as heating coils), insulating spaces or barrier layers.

A system of breathing arrangements for delivering breathable gas to a patient includes at least first and second cushion components, e.g., full-face, nasal, nasal prongs, nose tip, and/or a combination of any of the above, including a nasal or full-face cushion and nasal prongs/nozzles combination, etc., that are different from one another in at least one aspect, and a common frame assembly configured to support each of the first and second cushion components. Various embodiments are directed to a full-face or nasal mask used with a frame having lateral connector portions having a stiffening member. The mask assembly may include a nose height adjustment device for the height of the cushion, or a cushion adjustment member by which the position of the cushion may be adjusted relative to the frame. The mask assembly may include a chin strap assembly.

Methods and apparatus for detection of tissue damage in patients using a medical device for an extended period of time are disclosed.

A mask includes: a mask body configured to define a space that covers at least one of a nose and a mouth of a subject; and a cushion member extending along a peripheral edge portion of the mask body. The cushion member includes: a first region that includes a portion that contacts a face of the subject when fitted; and a second region positioned between the first region and the mask body. A surface of the first region has a higher non-adhesive property than a surface of the second region, and the second region has transparency that allows the space to be seen through.

Provided is a mask fitting level determination device that has a significantly simple component configuration, that can be driven by a battery, that can be reduced in size to a palm size, that is inexpensive, that is operated by a simple operation method, and that does not require proficiency for accurate measurement. The mask fitting level determination device includes: a mask inner pressure detection unit 2 that is inserted between a face surface F of a mask wearing person and a worn mask 1; and a circuit control unit that sets a predefined threshold value in accordance with strength of breathing of the mask wearing person and determines a fitting level on the basis of a reference pressure value and a mask inner pressure value measure by the mask inner pressure detection unit 2; and a display unit 3 that displays the fitting level determined by the circuit control unit to the mask wearing person.

A patient interface includes a plenum chamber, a seal-forming structure, and a positioning and stabilising structure to provide a force to hold the seal-forming structure in a therapeutically effective position on a patient's head. The positioning and stabilizing structure includes a superior strap portion, an inferior strap portion, and a posterior connecting strap portion connected to or formed integrally with the superior strap portion and the inferior strap portion. The posterior connecting strap portion is constructed from a mesh material that is different than the material used to construct the superior strap portion and the inferior strap portion. The posterior connecting strap portion has a greater stretch capability than the superior strap portion and a lesser stretch capability than the inferior strap portion. The stretch capabilities allow the positioning and stabilizing structure to be removable from the patient's head when the loop engages the connection portion.

The invention relates to a respiratory mask of modular construction. The main components are reduced to four parts and are provided by the mask body, the forehead support, the mask bead and the attachment piece. The design, according to the invention, of the outflow structure between mask body and forehead support makes apertures in the mask body unnecessary for this purpose. The strap coupling in the region of the mask body is made easier by a funnel-shaped guide structure such that it is possible in a simple manner even without seeing it.

Methods and apparatus for detection of tissue damage in patients using a medical device for an extended period of time are disclosed.

A face mask (90) comprises an instrument shielding apparatus (91) which comprises an instrument shielding device (92) which is connected to the face mask (90) by an adapter (89). The adapter (89) comprises an instrument accommodating housing (15) through which an instrument bore (25) extends therethrough. The instrument accommodating housing (15) terminates at one end in a first main port (20) engageable with an instrument port (7) of the face mask (90), and in the other end in a second main port (23). The instrument shielding device (92) comprises a shielding sleeve (95) a first end (96) of which is secured by a coupling ring (98) to the second main port (23) of the adapter (89), and a second end (97) of which is secured in a storage chamber (94) of a sleeve storing housing (93) of the instrument shielding device (92). The sleeve storing housing (93) is sealably engageable with a proximal end (58) of an endoscope (10), and the shielding sleeve extends from a collapsed stored state in the storage chamber (94) to the adapter (89) for shielding the endoscope (10).