Abstract: Provided is a cellulose acylate composition containing cellulose acylate particles and metal compound-containing particles. The total degree of substitution of the cellulose acylate is from 0.7 to 2.9. The metal compound is one or more types of compounds selected from an alkali metal compound and an alkaline earth metal compound. The composition is produced by adding one or more types of metal compounds selected from an alkali metal compound and an alkaline earth metal compound during and/or after removing a water-soluble polymer from a dispersion containing, as a dispersoid, cellulose acylate impregnated with a plasticizer to form cellulose acylate particles.

Abstract: For reducing a discomfort feeling brought by wearing a breathing mask, a wearing tool for the breathing mask which covers nostrils of a user and supplies gas for breathing to the nostrils comprises a pair of connecting members each of which has a longitudinal shape and has a first end portion which is connected to the breathing mask, and a pair of fixing members each of which is connected to a second end portion of the fixing member and is plugged in the tragus of the user. Hence a discomfort feeling due to restraining around the head of the user can be reduced.

Abstract: For reducing a discomfort feeling brought by wearing a breathing mask, a wearing tool for the breathing mask which covers nostrils of a user and supplies gas for breathing to the nostrils comprises a pair of connecting members each of which has a longitudinal shape and has a first end portion which is connected to the breathing mask, and a pair of fixing members each of which is connected to a second end portion of the fixing member and is plugged in the tragus of the user. Hence a discomfort feeling due to restraining around the head of the user can be reduced.

Abstract: A respiratory mask system is provided, in which while wearing a respiratory mask system, force generated by movement of a user's head and the like to induce laterally slipping a mask cushion may be reduced or absorbed. The respiratory mask system is provided with a mask cushion covering a nose, a nose and a mouth, or a full face. A first frame is connected with the mask cushion to supply respiratory gas under positive pressure. A second frame is connected with a headgear strap, in which the mask cushion is placed on a face side of the first frame and the first frame is placed on a face side of the second frame. The first frame is connected slidably with the second frame along a slide surface.

Abstract: The present invention relates to a nasal respiratory mask system comprising: a nasal mask that is tightly attached to the face of a user and serves as means for leading positive-pressure breathing gas to the nose of the user, a frame to keep the nasal mask at a predetermined position, and a headgear that is mounted on the head in order to attach the nasal mask tightly to the face; wherein, the headgear comprises, on the tip thereof, a headgear strap for adjusting the length of the headgear, the headgear strap comprises a headgear fastener that serves as means for connection/disconnection with the frame, the frame comprises a fastener catch that engages with the headgear fastener, and the fastener catch comprises an axisymmetric guide whose (rotation) axis is the insertion direction of the headgear fastener.

Abstract: A light weight nasal respiratory mask system securing airtightness of a mounting section between a nasal mask and a frame is provided.

Abstract: A headgear suitable for wearing a respiratory mask system wearing on the head of a user is provided, wherein it can be easily manufactured, the leakage of the positive pressure gas when pressurized is reduced, and a good wearing feel is achieved. The headgear is adapted to secure a respiratory mask, which contacts the face of the user to supply a positive pressure gas for respiration to the user, to the head of user. The headgear has a head mounted portion which is worn on the occipital of the user and a strap (3) connecting to this head mounted portion. The head mounted portion has at least one closed curved belt (1) which has thereon at least one junction (2). At least one junction provides the closed curved belt with a nonplanar structure adaptable to the shape of the head of the user.

Abstract: For reducing a discomfort feeling brought by wearing a breathing mask, a wearing tool for the breathing mask which covers nostrils of a user and supplies gas for breathing to the nostrils comprises a pair of connecting members each of which has a longitudinal shape and has a first end portion which is connected to the breathing mask, and a pair of fixing members each of which is connected to a second end portion of the fixing member and is plugged in the tragus of the user. Hence a discomfort feeling due to restraining around the head of the user can be reduced.

Abstract: A light weight nasal respiratory mask system securing airtightness of a mounting section between a nasal mask and a frame is provided.

Abstract: A respiratory mask system is provided, in which while wearing a respiratory mask system, force generated by movement of a user's head and the like to induce laterally slipping a mask cushion may be reduced or absorbed. A respiratory mask system, which is provided with a mask cushion covering a nose, a nose and a mouth or a full face, a first frame connected with the mask cushion enabling to supply respiratory gas under positive pressure from a means for supplying respiratory gas under positive pressure, and a second frame connected with a headgear strap, in which the mask cushion is placed on a face side of the first frame, the first frame is placed on a face side of the second frame, a slide surface is formed at least a side of the first frame facing the second frame or a side of the second frame facing the first frame and the first frame is connected slidably with the second frame along the slide surface.

Abstract: A headgear suitable for wearing a respiratory mask system wearing on the head of a user is provided, wherein it can be easily manufactured, the leakage of the positive pressure gas when pressurized is reduced, and a good wearing feel is achieved. The headgear is adapted to secure a respiratory mask, which contacts the face of the user to supply a positive pressure gas for respiration to the user, to the head of user. The headgear has a head mounted portion which is worn on the occipital of the user and a strap (3) connecting to this head mounted portion. The head mounted portion has at least one closed curved belt (1) which has thereon at least one junction (2). At least one junction provides the closed curved belt with a nonplanar structure adaptable to the shape of the head of the user.

Abstract: The present invention relates to a nasal respiratory mask system comprising: a nasal mask that is tightly attached to the face of a user and serves as means for leading positive-pressure breathing gas to the nose of the user, a frame to keep the nasal mask at a predetermined position, and a headgear that is mounted on the head in order to attach the nasal mask tightly to the face; wherein, the headgear comprises, on the tip thereof, a headgear strap for adjusting the length of the headgear, the headgear strap comprises a headgear fastener that serves as means for connection/disconnection with the frame, the frame comprises a fastener catch that engages with the headgear fastener, and the fastener catch comprises an axisymmetric guide whose (rotation) axis is the insertion direction of the headgear fastener.

Abstract: According to the present invention, there is provided a nasal respiratory mask contacting with the face of a user for supplying respiratory positive-pressure gas to the nose of the user, comprising at least a part attached tightly to the face that is attached tightly to the face of the user; a frame-fitting part for fitting to a frame; and an elastic connecting part that connects elastically the part attached tightly to the face with the frame-fitting part, wherein a facial side of the elastic connecting part is kept apart from the frame-fitting part side thereof for a required distance even in the absence of applied respiratory positive pressure. The nasal respiratory mask has advantages that it can be worn in an appropriate position without applying positive pressure at the start of wearing, scarcely disturbs the visual field during wearing, and can prevent prolongation of the time required for drying or occurrence of unsanitary condition after routine cleaning by washing with water.