Respiratory interface with elbow

Abstract

A respiratory interface, such as 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 mouthpiece and an extra oral seal associated with the gases passageway, wherein the passageway in use causes gases to be diffused when exiting from the gases passageway. Mouthpiece may have an adjustment mechanism to alter distance between the vestibular shield and the extra-oral seal. The interface may include an elbow having a vent.

1 - 20 . (canceled) 
     
     
         21 . A mouthpiece for an apparatus for delivery of gas to a user, the mouthpiece comprising:
 an outer flap made of a flexible material and extending laterally along a peripheral width and defining a lateral periphery of the outer flap, the outer flap having a distal portion and a proximal portion;   a stiffer member connected to the distal portion of the outer flap;   an extra-oral flap disposed on the proximal portion of the outer flap, the extra-oral flap configured to conform to facial contours around an outside of upper and lower lips of user's mouth, in use;   a nose flap comprising a base portion and a nose flange extending from an upper portion of the outer flap, the nose flange being contoured to seal with a nose of the user, in use;   wherein the base portion of the nose flap comprises a front base portion that is spaced proximally from the stiffer member and first and second lateral base portions that are spaced laterally inwardly from the lateral periphery of the outer flap.   
     
     
         22 . The mouthpiece according to  claim 21 , wherein the stiffer member comprises a connector portion constructed from a hard plastics material. 
     
     
         23 . The mouthpiece according to  claim 21 , wherein the stiffer member comprises an inlet configured to be fluidically connectable to a breathing gas source. 
     
     
         24 . The mouthpiece according to  claim 21 , wherein outer flap comprises an inlet configured to be fluidically connectable to a breathing gas source. 
     
     
         25 . The mouthpiece according to  claim 21 , wherein the nose flap comprises a curved region that rests against the user's nose in use. 
     
     
         26 . The mouthpiece according to  claim 21 , wherein the nose flap is a blocking member or attachment. 
     
     
         27 . The mouthpiece according to  claim 21 , wherein the nose flange defines a first nasal outlet directing a flow of gas to the user's nasal cavity in use. 
     
     
         28 . The mouthpiece according to  claim 21 , wherein the extra-oral flap is shaped to provide a substantially airtight seal, in use. 
     
     
         29 . The mouthpiece according to  claim 21 , wherein the stiffer member comprises a hard ring adapted for connection to a source of breathing gases. 
     
     
         30 . The mouthpiece according to  claim 29 , wherein the nose flap is positioned vertically above the hard ring. 
     
     
         31 . The mouthpiece according to  claim 21 , additionally comprising an inlet and elbow connector fluidically connected to the inlet and configured to swivel about an axis of the inlet. 
     
     
         32 . The mouthpiece according to  claim 31 , wherein the inlet comprises a circular cross section and is disposed at a distal portion of the mouthpiece. 
     
     
         33 . The mouthpiece according to  claim 21 , wherein the nose flap is integral with the extra-oral flap. 
     
     
         34 . The mouthpiece according to  claim 21  wherein the extra-oral flap comprises a wide open end. 
     
     
         35 . The mouthpiece according to  claim 21 , wherein the extra-oral flap defines a perimeter surrounding a user's mouth in use.