A mouthpiece having a vestibular shield overlapping a user's teeth and gums, a gases passageway extending through the vestibular shield allowing for the passage of the gases through the mouthpiece and an extra oral sealing member is associated with the gases passageway. The passageway in use causes
A mouthpiece having a vestibular shield overlapping a user's teeth and gums, a gases passageway extending through the vestibular shield allowing for the passage of the gases through the mouthpiece and an extra oral sealing member is associated with the gases passageway. The passageway in use causes gases to be diffused when exiting from the gases passageway. The mouthpiece may have a noseflap to seal the user's nose or provide a passageway for the user's nasal passages. The mouthpiece may have an adjustment arrangement to alter a distance between the vestibular shield and the extra-oral sealing member.
대표청구항▼
1. An apparatus for supplying breathing gases from a gases supply to a user through a breathing circuit to provide an elevated internal pressure in the user's airways, the apparatus comprising: a first portion configured to contact the user at a first location, the first portion defining an opening
1. An apparatus for supplying breathing gases from a gases supply to a user through a breathing circuit to provide an elevated internal pressure in the user's airways, the apparatus comprising: a first portion configured to contact the user at a first location, the first portion defining an opening configured to allow breathing gases to pass from the breathing circuit to the user;a second portion configured to contact the user at a second location;an adjustment mechanism that moves the second portion in a linear manner relative to the first portion along an adjustment axis that extends in a fore and aft direction relative to the user such that the apparatus can be adjusted to the user's facial contours, wherein the adjustment mechanism comprises: an adjuster rotatably clipped to the first portion for rotation relative to the first portion in a fixed axial position relative to the first portion, the adjuster comprising a first thread element;a second thread element provided on the second portion, wherein the first thread element and the second thread element engage one another such that relative rotation of the first thread element and the second thread element causes the movement of the second portion relative to the first portion along the adjustment axis;a linear slot on the second portion, wherein the linear slot extends in an axial direction and interrupts threads of the second thread element, and wherein spaces between the threads of the second thread element open to each side of the slot such that threads of the first thread element can move across the slot;wherein, when the adjuster is rotated, the adjuster causes rotation of the first thread element with respect to the second thread element; andan elbow connector configured to connect the apparatus with the breathing circuit. 2. The apparatus of claim 1, wherein the adjustment mechanism further comprises a protrusion on the first portion, wherein the protrusion is received within and slides along the linear slot during the movement of the second portion relative to the first portion. 3. The apparatus of claim 2, wherein the adjustment mechanism further comprises a stop that contacts the protrusion to limit relative movement of the first portion and the second portion along the adjustment axis. 4. The apparatus of claim 1, wherein the opening is circular in shape. 5. The apparatus of claim 1, further comprising an outlet vent that permits expired gases from the user to be expelled from the apparatus. 6. The apparatus of claim 1, wherein the first portion and the second portion are each constructed at least in part of a polycarbonate material. 7. The apparatus of claim 1, wherein the adjustment mechanism is configured such that the adjuster is prevented from freely rotating to maintain a desired adjustment position of the adjustment mechanism. 8. The apparatus of claim 1, wherein the elbow connector comprises a swivel joint. 9. The apparatus of claim 1, wherein the elbow is configured to extend downwardly relative to a user of the apparatus. 10. The apparatus of claim 1, wherein an outer surface of the adjuster includes a plurality of ribs. 11. A user interface for supplying breathing gases from a gases supply to a user through a breathing circuit to provide an elevated internal pressure in the user's airways, the user interface comprising: a first interface portion, the first interface portion defining an opening configured to allow breathing gases to pass from the breathing circuit to the user;a second interface portion;an adjustment mechanism configured to provide translation of the second interface portion relative to the first interface portion such that the apparatus can be adjusted to the user's facial contours, wherein the adjustment mechanism comprises a rotational threaded connection between the first interface portion and the second interface portion, and wherein the adjustment mechanism further comprises a rotational adjuster configured to permit a user to operate the adjustment mechanism, wherein the second interface portion extends through the first interface portion to engage the rotational adjuster, wherein the threaded connection comprises a first thread element engaged with a second thread element, further comprising a linear slot on the second interface portion, wherein the linear slot extends in an axial direction and interrupts threads in the second thread element, wherein spaces between the threads of the second thread element open to each side of the slot such that threads of the first thread element can move across the slot;a conduit connector configured to connect the user interface with the breathing circuit. 12. The user interface of claim 11, wherein the threaded connection comprises a protrusion on the first interface portion, wherein the protrusion engages the linear slot to maintain rotational alignment of the first interface portion and the second interface portion. 13. The user interface of claim 12, wherein the adjustment mechanism further comprises a stop that contacts the protrusion to limit translation of the first interface portion relative to the second interface portion. 14. The user interface of claim 11, wherein the opening is circular in shape. 15. The user interface of claim 11, further comprising an outlet vent that permits expired gases from the user to be expelled from the user interface. 16. The user interface of claim 11, wherein the first interface portion and the second interface portion are each constructed at least in part of a polycarbonate material. 17. The user interface of claim 11, wherein the adjustment mechanism is configured such that the rotational adjuster is prevented from freely rotating to maintain a desired adjustment position of the adjustment mechanism. 18. The user interface of claim 11, wherein the conduit connector comprises an elbow that extends downwardly relative to the user interface. 19. The user interface of claim 18, wherein the elbow comprises a swivel joint. 20. The user interface of claim 19, wherein the adjustment mechanism provides a plurality of adjustment positions of the second interface portion relative to the first interface portion within an available total range of adjustment. 21. The apparatus of claim 11, wherein an outer surface of the adjuster includes a plurality of ribs. 22. The apparatus of claim 11, wherein the adjuster is clipped to the first portion.
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이 특허에 인용된 특허 (176)
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