Mask system with snap-fit shroud
DC
First Claim
Patent Images
1. A mask system to provide positive air pressure therapy to a patient, the mask system comprising:
- a cushion module forming a breathing chamber, the cushion module comprising;
a frame having an interior surface exposed to the breathing chamber, the frame including a frame opening positioned to receive a supply of air at positive pressure, wherein the frame includes a collar surrounding the frame opening and extending away from an exterior surface of the frame, the collar having a longitudinal axis, and the collar having a cylindrical surface with an axis that is coincident with the longitudinal axis of the collar, wherein the collar includes a first radial protrusion and a second radial protrusion extending from the cylindrical surface, each of the first radial protrusion and the second radial protrusion having a part-annular shape and having a curvature centered about the longitudinal axis of the collar, wherein the frame, including the collar and each of the first radial protrusion and the second radial protrusion, is constructed from a first material, anda cushion constructed of an elastomeric material that is a different material from the first material, the first material of the frame being harder than the elastomeric material of the cushion, the frame being more rigid than the cushion, the cushion configured to seal against the patient'"'"'s face in use to enable the supply of air at positive pressure to be delivered to at least the patient'"'"'s nose,wherein the cushion and the frame are joined to form an integrated component;
an elbow configured to receive the supply of air at positive pressure and deliver the supply of air at positive pressure to the breathing chamber;
a shroud configured to removably connect to the frame of the cushion module, wherein the shroud includes an elbow opening that accommodates the elbow, wherein the shroud includes a rear surface at least partly covering the exterior surface of the frame, the shroud having a first part-annular snap connection portion and a second part-annular snap connection portion circumferentially spaced from one another and centered about a longitudinal axis of the elbow opening, the first part-annular snap connection portion and the second part-annular snap connection portion being positioned rearward of the elbow opening of the shroud, wherein the shroud, including the first part-annular snap connection portion and the second part-annular snap connection portion, is constructed from a second material, the second material of the shroud being harder than the elastomeric material of the cushion, and the shroud being more rigid than the cushion;
headgear configured to connect to the shroud to maintain the cushion module in position on the patient'"'"'s head in use; and
a vent arrangement having a plurality of holes for gas washout from the breathing chamber to atmosphere,wherein the shroud includes headgear connectors structured to connect to said headgear,wherein, to releasably connect the shroud to the cushion module, each of the first radial protrusion and the second radial protrusion and a corresponding one of the first part-annular snap connection portion and the second part-annular snap connection portion are structured to form a removable snap-fit connection by moving the cushion module and the shroud towards one another along the longitudinal axis of the collar, andwherein when the first radial protrusion and the second radial protrusion and the first part-annular snap connection portion and the second part-annular snap connection portion are joined to form the removable snap-fit connection, the cushion module and the shroud are stabilized against rotation relative to one another.
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Accused Products
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.
820 Citations
30 Claims
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1. A mask system to provide positive air pressure therapy to a patient, the mask system comprising:
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a cushion module forming a breathing chamber, the cushion module comprising; a frame having an interior surface exposed to the breathing chamber, the frame including a frame opening positioned to receive a supply of air at positive pressure, wherein the frame includes a collar surrounding the frame opening and extending away from an exterior surface of the frame, the collar having a longitudinal axis, and the collar having a cylindrical surface with an axis that is coincident with the longitudinal axis of the collar, wherein the collar includes a first radial protrusion and a second radial protrusion extending from the cylindrical surface, each of the first radial protrusion and the second radial protrusion having a part-annular shape and having a curvature centered about the longitudinal axis of the collar, wherein the frame, including the collar and each of the first radial protrusion and the second radial protrusion, is constructed from a first material, and a cushion constructed of an elastomeric material that is a different material from the first material, the first material of the frame being harder than the elastomeric material of the cushion, the frame being more rigid than the cushion, the cushion configured to seal against the patient'"'"'s face in use to enable the supply of air at positive pressure to be delivered to at least the patient'"'"'s nose, wherein the cushion and the frame are joined to form an integrated component; an elbow configured to receive the supply of air at positive pressure and deliver the supply of air at positive pressure to the breathing chamber; a shroud configured to removably connect to the frame of the cushion module, wherein the shroud includes an elbow opening that accommodates the elbow, wherein the shroud includes a rear surface at least partly covering the exterior surface of the frame, the shroud having a first part-annular snap connection portion and a second part-annular snap connection portion circumferentially spaced from one another and centered about a longitudinal axis of the elbow opening, the first part-annular snap connection portion and the second part-annular snap connection portion being positioned rearward of the elbow opening of the shroud, wherein the shroud, including the first part-annular snap connection portion and the second part-annular snap connection portion, is constructed from a second material, the second material of the shroud being harder than the elastomeric material of the cushion, and the shroud being more rigid than the cushion; headgear configured to connect to the shroud to maintain the cushion module in position on the patient'"'"'s head in use; and a vent arrangement having a plurality of holes for gas washout from the breathing chamber to atmosphere, wherein the shroud includes headgear connectors structured to connect to said headgear, wherein, to releasably connect the shroud to the cushion module, each of the first radial protrusion and the second radial protrusion and a corresponding one of the first part-annular snap connection portion and the second part-annular snap connection portion are structured to form a removable snap-fit connection by moving the cushion module and the shroud towards one another along the longitudinal axis of the collar, and wherein when the first radial protrusion and the second radial protrusion and the first part-annular snap connection portion and the second part-annular snap connection portion are joined to form the removable snap-fit connection, the cushion module and the shroud are stabilized against rotation relative to one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A mask system to provide positive air pressure therapy to a patient, the mask system comprising:
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a cushion module comprising; a frame constructed of a first material, the frame having an interior surface at least partly forming a breathing chamber, the frame including a protruding vent arrangement for gas washout from the breathing chamber to atmosphere, the protruding vent arrangement having a plurality of vent holes, the frame including a circular frame opening configured to, in use, receive a supply of air at positive pressure, and a cushion constructed of an elastomeric material that is a different material from the first material of the frame, the first material of the frame being harder than the elastomeric material of the cushion, the frame being more rigid than the cushion, the cushion configured to seal against the patient'"'"'s face in use to enable the supply of air at positive pressure to be delivered to the patient'"'"'s airways, and wherein the cushion is connected to the frame; a shroud structured to removably retain the frame of the cushion module, the shroud having a rear wall that at least partly covers an exterior surface of the frame, the shroud constructed of a second material, the second material of the shroud being harder than the elastomeric material of the cushion, the shroud being more rigid than the cushion, wherein the shroud includes a vent-receiving opening that receives said protruding vent arrangement; and headgear configured to maintain the mask system in position on the patient'"'"'s head in use, the headgear connected to the shroud, wherein the frame includes a cylindrical collar extending from the exterior surface of the frame in a direction away from the breathing chamber, the collar having a longitudinal axis, and wherein the shroud includes a plurality of part-annular snap fingers positioned rearward from the rear wall towards the breathing chamber, and the collar further comprises protrusions to engage corresponding ones of the plurality of part-annular snap fingers with a removable snap-fit connection by moving the cushion module and the shroud towards one another along the longitudinal axis of the collar. - View Dependent Claims (15, 16, 17)
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18. A mask system to provide positive air pressure therapy to a patient, the mask system comprising:
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a cushion module comprising; a frame having an interior surface at least partly forming a breathing chamber, the frame including a frame opening positioned to receive a supply of air at positive pressure, wherein the frame includes a collar surrounding the frame opening and extending away from an exterior surface of the frame, the collar having a longitudinal axis, and the collar having a cylindrical surface with an axis that is coincident with the longitudinal axis of the collar, wherein the collar includes at least one radial protrusion extending from the cylindrical surface, the at least one radial protrusion having a curvature centered about the longitudinal axis of the collar, wherein the frame, including the collar and the at least one radial protrusion, is constructed from a first material, and a cushion constructed of an elastomeric material that is a different material from the first material, the first material of the frame being harder than the elastomeric material of the cushion, the frame being more rigid than the cushion, the cushion configured to seal against the patient'"'"'s face in use to enable the supply of air at positive pressure to be delivered to at least the patient'"'"'s nose, wherein the cushion and the frame are joined to form an integrated component; an elbow configured to receive the supply of air at positive pressure and deliver the supply of air at positive pressure to the breathing chamber; a shroud configured to removably connect to the frame of the cushion module, wherein the shroud includes an elbow opening that accommodates the elbow, wherein the shroud includes a rear surface at least partly covering the exterior surface of the frame, the shroud having a plurality of part-annular snap connection portions circumferentially spaced from one another and centered about a longitudinal axis of the elbow opening, the snap connection portions being positioned rearward of the elbow opening of the shroud, wherein the shroud, including the snap connection portions, is constructed from a second material, the second material of the shroud being harder than the elastomeric material of the cushion, and the shroud being more rigid than the cushion, headgear configured to connect to the shroud to maintain the cushion module in position on the patient'"'"'s head in use; and a vent arrangement having a plurality of holes for gas washout from the breathing chamber to atmosphere, wherein; the shroud includes a pair of upper headgear connectors and a pair of lower headgear connectors, said pair of upper headgear connectors structured to connect to said headgear, and said pair of lower headgear connectors structured to connect to said headgear, to releasably connect the shroud to the cushion module, the at least one radial protrusion and the snap connection portions are structured to form a removable snap-fit connection by moving the cushion module and the shroud towards one another along the longitudinal axis of the collar, when the collar and the snap connection portions are joined to form the removable snap-fit connection, the cushion module and the shroud are stabilized against rotation relative to one another, the frame opening of the frame is circular, the elbow opening of the shroud is circular, the collar of the frame is cylindrical, the cushion is constructed to engage the patient'"'"'s face along a nasal bridge region, a cheek region, and a lower lip/chin region of the patient'"'"'s face when in use, the elastomeric material of the cushion is silicone, the shroud does not include a forehead support, the elbow includes an anti-asphyxia valve, the first material is polycarbonate, the second material is polycarbonate, the elbow is directly attached to the shroud at the elbow opening, the elbow is rotatable 360°
relative to the shroud,the at least one radial protrusion further comprising a single radial protrusion having an annular shape, the single radial protrusion and the snap connection portions are arranged to remain stationary relative to one another as the elbow is rotated, the cushion and the frame are joined by a chemical bond, the headgear comprises a pair of upper straps, each of the pair of upper straps configured to be positioned on a corresponding lateral side of the patient'"'"'s head in use, and a pair of lower straps, each of the pair of lower straps configured to be positioned on a corresponding lateral side of the patient'"'"'s head in use, each of the pair of upper headgear connectors comprises an elongated arm to direct a corresponding one of the pair of upper straps away from the patient'"'"'s corresponding eye, each elongated arm being shaped to follow contours of the patient'"'"'s face and avoid the patient'"'"'s line of sight in use, a portion of each elongated arm is enveloped by a fabric sleeve, each elongated arm is constructed of a flexible material, each elongated arm is connected to the shroud, each elongated arm is configured to be positioned inferior to the patient'"'"'s corresponding eye in use and is configured to direct a corresponding one of the pair of upper straps superior to the patient'"'"'s corresponding ear in use, and each of the pair of lower headgear connectors is configured to direct a corresponding one of the pair of lower straps inferior to the patient'"'"'s corresponding ear in use. - View Dependent Claims (19)
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20. A mask system to provide positive air pressure therapy to a patient, the mask system comprising:
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a cushion module comprising; a frame having an interior surface at least partly forming a breathing chamber, the frame including a frame opening positioned to receive a supply of air at positive pressure, wherein the frame includes a collar surrounding the frame opening and extending away from an exterior surface of the frame, the collar having a longitudinal axis, and the collar having a cylindrical surface with an axis that is coincident with the longitudinal axis of the collar, wherein the collar includes at least one radial protrusion extending from the cylindrical surface, the at least one radial protrusion having a curvature centered about the longitudinal axis of the collar, wherein the frame, including the collar and the at least one radial protrusion, is constructed from a first material, and a cushion constructed of an elastomeric material that is a different material from the first material, the first material of the frame being harder than the elastomeric material of the cushion, the frame being more rigid than the cushion, the cushion configured to seal against the patient'"'"'s face in use to enable the supply of air at positive pressure to be delivered to at least the patient'"'"'s nose, wherein the cushion and the frame are joined to form an integrated component; an elbow configured to receive the supply of air at positive pressure and deliver the supply of air at positive pressure to the breathing chamber; a shroud configured to removably connect to the frame of the cushion module, wherein the shroud includes an elbow opening that accommodates the elbow, wherein the shroud includes a rear surface at least partly covering the exterior surface of the frame, the shroud having a plurality of part-annular snap connection portions circumferentially spaced from one another and centered about a longitudinal axis of the elbow opening, the snap connection portions being positioned rearward of the elbow opening of the shroud, wherein the shroud, including the snap connection portions, is constructed from a second material, the second material of the shroud being harder than the elastomeric material of the cushion, and the shroud being more rigid than the cushion, headgear configured to connect to the shroud to maintain the cushion module in position on the patient'"'"'s head in use; and a vent arrangement having a plurality of holes for gas washout from the breathing chamber to atmosphere, wherein; the shroud includes a pair of upper headgear connectors and a pair of lower headgear connectors, said pair of upper headgear connectors structured to connect to said headgear, and said pair of lower headgear connectors structured to connect to said headgear, to releasably connect the shroud to the cushion module, the at least one radial protrusion and the snap connection portions are structured to form a removable snap-fit connection by moving the cushion module and the shroud towards one another along the longitudinal axis of the collar, when the collar and the snap connection portions are joined to form the removable snap-fit connection, the cushion module and the shroud are stabilized against rotation relative to one another, the elbow opening of the shroud is circular, the collar of the frame is cylindrical, the cylindrical surface is on an exterior of the collar, the at least one radial protrusion comprises a plurality of protrusions spaced circumferentially about the cylindrical surface, each of the plurality of protrusions having a part-annular shape, the protrusions and the snap connection portions are configured to form the removable snap-fit connection between a front end of the cylindrical surface and a rear end of the cylindrical surface, the cushion is constructed to engage the patient'"'"'s face along a nasal bridge region, a cheek region, and an upper lip region of the patient'"'"'s face when in use, the elastomeric material of the cushion is silicone, the shroud does not include a forehead support, the first material is polycarbonate, the second material is polycarbonate, the cushion and the frame are joined by a chemical bond, the elbow is directly attached to the shroud at the elbow opening, the elbow is rotatable 360°
relative to the shroud,the collar and the snap-fit connection are arranged to remain stationary relative to one another as the elbow is rotated, the headgear comprises a pair of upper straps, each of the pair of upper straps configured to be positioned on a corresponding lateral side of the patient'"'"'s head in use, and a pair of lower straps, each of the pair of lower straps configured to be positioned on a corresponding lateral side of the patient'"'"'s head in use, each of the pair of upper headgear connectors comprises an elongated arm to direct a corresponding one of the pair of upper straps away from the patient'"'"'s corresponding eye, each elongated arm being shaped to follow contours of the patient'"'"'s face and avoid the patient'"'"'s line of sight in use, each elongated arm has an inner surface including a cheek pad, each elongated arm is constructed of a flexible material, each elongated arm is configured to be positioned inferior to the patient'"'"'s corresponding eye in use and is configured to direct a corresponding one of the pair of upper straps superior to the patient'"'"'s corresponding ear in use, each of the pair of lower headgear connectors is configured to direct a corresponding one of the pair of lower straps inferior to the patient'"'"'s corresponding ear in use, and the mask system further includes a seal at an interface between the elbow and the frame. - View Dependent Claims (21)
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22. A mask system to provide positive air pressure therapy to a patient, the mask system comprising:
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a cushion module comprising; a frame having an interior surface at least partly forming a breathing chamber, the frame including a frame opening positioned to receive a supply of air at positive pressure, wherein the frame includes a collar surrounding the frame opening and extending away from an exterior surface of the frame, the collar having a longitudinal axis, and the collar having a cylindrical surface with an axis that is coincident with the longitudinal axis of the collar, wherein the collar includes at least one radial protrusion extending from the cylindrical surface, the at least one radial protrusion having a curvature centered about the longitudinal axis of the collar, wherein the frame, including the collar and the at least one radial protrusion, is constructed from a first material, and a cushion constructed of an elastomeric material that is a different material from the first material, the first material of the frame being harder than the elastomeric material of the cushion, the frame being more rigid than the cushion, the cushion configured to seal against the patient'"'"'s face in use to enable the supply of air at positive pressure to be delivered to at least the patient'"'"'s nose, wherein the cushion and the frame are joined to form an integrated component; an elbow configured to receive the supply of air at positive pressure and deliver the supply of air at positive pressure to the breathing chamber; a shroud configured to removably connect to the frame of the cushion module, wherein the shroud includes an elbow opening that accommodates the elbow, wherein the shroud includes a rear surface at least partly covering the exterior surface of the frame, the shroud having a plurality of part-annular snap connection portions circumferentially spaced from one another and centered about a longitudinal axis of the elbow opening, the snap connection portions being positioned rearward of the elbow opening of the shroud, wherein the shroud, including the snap connection portions, is constructed from a second material, the second material of the shroud being harder than the elastomeric material of the cushion, and the shroud being more rigid than the cushion, headgear configured to connect to the shroud to maintain the cushion module in position on the patient'"'"'s head in use; and a vent arrangement having a plurality of holes for gas washout from the breathing chamber to atmosphere, wherein; the shroud includes a pair of upper headgear connectors and a pair of lower headgear connectors, said pair of upper headgear connectors structured to connect to said headgear, and said pair of lower headgear connectors structured to connect to said headgear, to releasably connect the shroud to the cushion module, the at least one radial protrusion and the snap connection portions are structured to form a removable snap-fit connection by moving the cushion module and the shroud towards one another along the longitudinal axis of the collar, when the collar and the snap connection portions are joined to form the removable snap-fit connection, the cushion module and the shroud are stabilized against rotation relative to one another, the frame opening of the frame is circular, the elbow opening of the shroud is circular, the collar of the frame is cylindrical, the cushion is constructed to engage the patient'"'"'s face along a nasal bridge region, a cheek region, and a lower lip/chin region of the patient'"'"'s face when in use, the elastomeric material of the cushion is silicone, the cushion and the frame are constructed and arranged to be in an interlocking relationship with one another, the first material is polycarbonate, the second material is polycarbonate, said headgear comprises hook and loop material, the shroud further comprises a forehead support, the elbow is directly attached to the shroud at the elbow opening, the elbow includes an anti-asphyxia valve, the collar and the snap-fit connection are arranged to remain stationary relative to one another as the elbow is rotated, the vent arrangement comprises a protruding vent arrangement that protrudes from the frame, the protruding vent arrangement including a vent-wall having the plurality of holes, the vent-wall being spaced from the frame by a lower wall and two lateral side walls of the protruding vent arrangement, and the protruding vent arrangement positioned above the frame opening, the at least one radial protrusion further comprises a plurality of part-annular protrusions spaced circumferentially about the frame opening, the snap connection portions comprise part-annular snap fingers that extend from the rear surface and are spaced circumferentially about the elbow opening, the part-annular protrusions and the part-annular snap fingers are configured to form the removable snap-fit connection between a front end of the cylindrical surface and a rear end of the cylindrical surface relative to the patient in use, each of the part-annular snap fingers has a curvature that is centered on the longitudinal axis of the collar, a region of the cushion positioned to engage the nasal bridge region of the patient is configured to allow increased movement compared to another region of the cushion that is adapted to seal with another region of the patient'"'"'s face, and the mask system being constructed so that the snap-fit connection is established when a force is applied to move the shroud and cushion module toward one another along the longitudinal axis until a rear end of each of the part-annular snap fingers initially contacts a front end of the corresponding protrusion on the collar, whereupon further application of the force causes each of the part-annular snap fingers to ride over the corresponding part-annular protrusion and therefore resiliently deflect in a first radial direction relative to the longitudinal axis of the collar, and upon further movement towards one another, each of the part-annular snap fingers resiliently moves in a second radial direction, opposite the first radial direction, and engages a rear end of the corresponding part-annular protrusion to snap each of the part-annular snap fingers into place, thereby removably connecting the shroud and the cushion module. - View Dependent Claims (23)
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24. A mask system to provide positive air pressure therapy to a patient, the mask system comprising:
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a cushion module comprising; a frame having an interior surface at least partly forming a breathing chamber, the frame including a frame opening positioned to receive a supply of air at positive pressure, wherein the frame includes a collar surrounding the frame opening and extending away from an exterior surface of the frame, the collar having a longitudinal axis, and the collar having a cylindrical surface with an axis that is coincident with the longitudinal axis of the collar, wherein the collar includes at least one radial protrusion extending from the cylindrical surface, the at least one radial protrusion having a curvature centered about the longitudinal axis of the collar, wherein the frame, including the collar and the at least one radial protrusion, is constructed from a first material, and a cushion constructed of an elastomeric material that is a different material from the first material, the first material of the frame being harder than the elastomeric material of the cushion, the frame being more rigid than the cushion, the cushion configured to seal against the patient'"'"'s face in use to enable the supply of air at positive pressure to be delivered to at least the patient'"'"'s nose, wherein the cushion and the frame are joined to form an integrated component; an elbow configured to receive the supply of air at positive pressure and deliver the supply of air at positive pressure to the breathing chamber; a shroud configured to removably connect to the frame of the cushion module, wherein the shroud includes an elbow opening that accommodates the elbow, wherein the shroud includes a rear surface at least partly covering the exterior surface of the frame, the shroud having a plurality of part-annular snap connection portions circumferentially spaced from one another and centered about a longitudinal axis of the elbow opening, the snap connection portions being positioned rearward of the elbow opening of the shroud, wherein the shroud, including the snap connection portions, is constructed from a second material, the second material of the shroud being harder than the elastomeric material of the cushion, and the shroud being more rigid than the cushion, headgear configured to connect to the shroud to maintain the cushion module in position on the patient'"'"'s head in use; and a vent arrangement having a plurality of holes for gas washout from the breathing chamber to atmosphere, wherein; the shroud includes a pair of upper headgear connectors and a pair of lower headgear connectors, said pair of upper headgear connectors structured to connect to said headgear, and said pair of lower headgear connectors structured to connect to said headgear, to releasably connect the shroud to the cushion module, the at least one radial protrusion and the snap connection portions are structured to form a removable snap-fit connection by moving the cushion module and the shroud towards one another along the longitudinal axis of the collar, when the collar and the snap connection portions are joined to form the removable snap-fit connection, the cushion module and the shroud are stabilized against rotation relative to one another, the elbow opening of the shroud is circular, the collar of the frame is cylindrical, the at least one radial protrusion further comprises two part-annular protrusions spaced circumferentially about the cylindrical surface, the cushion is constructed to engage the patient'"'"'s face along a nasal bridge region, a cheek region, and an upper lip region of the patient'"'"'s face when in use, the elastomeric material of the cushion is silicone, the shroud includes a forehead support, the first material is polycarbonate, the second material is polycarbonate, the elbow is directly attached to the shroud at the elbow opening, the elbow is rotatable 360°
relative to the shroud,the collar and the snap-fit connection are arranged to remain stationary relative to one another as the elbow is rotated, the snap connection portions are structured to resiliently deflect relative to corresponding ones of the two part-annular protrusions in a radial direction relative to the longitudinal axis of the collar to form the removable snap-fit connection, the headgear comprises a pair of upper straps, each of the pair of upper straps configured to be positioned on a corresponding lateral side of the patient'"'"'s head in use, and a pair of lower straps, each of the pair of lower straps configured to be positioned on a corresponding lateral side of the patient'"'"'s head in use, each of the pair of upper headgear connectors is configured to direct a corresponding one of the pair of upper straps superior to the patient'"'"'s corresponding ear in use, and each of the pair of lower headgear connectors is configured to direct a corresponding one of the pair of lower straps inferior to the patient'"'"'s corresponding ear in use. - View Dependent Claims (25, 26)
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27. A mask system to provide positive air pressure therapy to a patient, the mask system comprising:
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a cushion module comprising; a frame having an interior surface at least partly forming a breathing chamber, the frame including a circular frame opening positioned to receive a supply of air at positive pressure, wherein the frame includes a cylindrical collar surrounding the frame opening and extending away from an exterior surface of the frame, the collar having a longitudinal axis, and the collar having a cylindrical surface with an axis that is coincident with the longitudinal axis of the collar, wherein the collar includes at least one radial protrusion extending from the cylindrical surface, the at least one radial protrusion having a curvature centered about the longitudinal axis of the collar, wherein the frame, including the collar and the at least one radial protrusion, is constructed from polycarbonate, and a cushion constructed of silicone, the polycarbonate of the frame being harder than the silicone of the cushion, the frame being more rigid than the cushion, the cushion configured to seal against the patient'"'"'s face in use to enable the supply of air at positive pressure to be delivered to the patient, the cushion is constructed to engage the patient'"'"'s face along a nasal bridge region, a cheek region, and a lower lip/chin region of the patient'"'"'s face when in use, wherein the cushion and the frame are joined to form an integrated component; an elbow configured to receive the supply of air at positive pressure and deliver the supply of air at positive pressure to the breathing chamber, the elbow having an anti-asphyxia valve; a shroud without a forehead support, the shroud configured to removably connect to the frame of the cushion module, wherein the shroud includes a circular elbow opening that accommodates the elbow, wherein the shroud includes a rear surface at least partly covering the exterior surface of the frame, the shroud having a plurality of part-annular snap connection portions circumferentially spaced from one another and centered about a longitudinal axis of the elbow opening, the snap connection portions extending rearward from the rear surface of the shroud, wherein the shroud, including the snap connection portions, is constructed from polycarbonate, the polycarbonate of the shroud being harder than the silicone of the cushion, and the shroud being more rigid than the cushion; headgear configured to connect to the shroud to maintain the cushion module in position on the patient'"'"'s head in use, the headgear comprising a pair of upper straps, each of the pair of upper straps configured to be positioned on a corresponding lateral side of the patient'"'"'s head in use, and a pair of lower straps, each of the pair of lower straps configured to be positioned on a corresponding lateral side of the patient'"'"'s head in use; and a vent arrangement having a plurality of holes for gas washout from the breathing chamber to atmosphere, wherein; the shroud includes a pair of upper headgear connectors and a pair of lower headgear connectors, said pair of upper headgear connectors structured to connect to said headgear, and said pair of lower headgear connectors structured to connect to said headgear, each of the pair of upper headgear connectors comprises an elongated arm to direct a corresponding one of the pair of upper straps away from the patient'"'"'s corresponding eye, each elongated arm being shaped to follow contours of the patient'"'"'s face and avoid the patient'"'"'s line of sight in use, a portion of each elongated arm is enveloped by a fabric sleeve, each elongated arm is constructed of a flexible material, each elongated arm is configured to be positioned inferior to the patient'"'"'s corresponding eye in use and is configured to direct a corresponding one of the pair of upper straps superior to the patient'"'"'s corresponding ear in use, each of the pair of lower headgear connectors is configured to direct a corresponding one of the pair of lower straps inferior to the patient'"'"'s corresponding ear in use to releasably connect the shroud to the cushion module, the at least one radial protrusion and the snap connection portions are structured to form a removable snap-fit connection by moving the cushion module and the shroud towards one another along the longitudinal axis of the collar, when the collar and the snap connection portions are joined to form the removable snap-fit connection, the cushion module and the shroud are stabilized against rotation relative to one another, the elbow is directly attached to the shroud at the elbow opening, and the elbow is rotatable 360°
relative to the shroud. - View Dependent Claims (28, 29, 30)
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Specification
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Litigation Data
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Current AssigneeResMed Pty Ltd. (ResMed Incorporated)
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Original AssigneeResmed Limited (ResMed Incorporated)
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InventorsNg, Eva, Lockwood, David James, Wehbeh, Jamie Graeme, Valcic, Zoran, D'Souza, Errol Savio Alex, Eves, Matthew, Sari, Mahsita
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Primary Examiner(s)Ditmer, Kathryn E
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Application NumberUS15/724,732Publication NumberTime in Patent Office216 DaysField of SearchUS Class CurrentCPC Class CodesA61M 16/0057 Pumps thereforA61M 16/0066 Blowers or centrifugal pumpsA61M 16/06 Respiratory or anaesthetic ...A61M 16/0611 with a gusset portionA61M 16/0616 with face sealing means com...A61M 16/0622 having an underlying cushionA61M 16/0633 with forehead supportA61M 16/0683 Holding devices thereforA61M 16/0694 Chin strapsA61M 16/0816 Joints or connectorsA61M 16/0825 with ball-socketsA61M 16/0841 for samplingA61M 16/0858 Pressure sampling portsA61M 16/0875 Connecting tubesA61M 16/20 Valves specially adapted to...A61M 16/208 Non-controlled one-way valv...A61M 2016/0661 with customised shapeA61M 2202/0085 product washed outA61M 2202/0225 Carbon oxides, e.g. Carbon ...
