Ventilation mask

Abstract

Ventilation masks are disclosed herein including a mask body and a gas manifold coupled to the mask body to form a gas channel for directing a gas through a gas port to create a curtain effect gas flow within the patient cavity and form a gas curtain within the patient cavity and adjacent to at least one vent opening formed through the mask body, and a sampling cover couplable with the mask body to form a sampling channel between a sampling portal of the sampling cover and a sensing port, where the sampling portal is formed by a protrusion of the sampling cover that extends into the vent opening and can extend toward a patient cavity formed by an inner surface of the mask body.

What is claimed is: 
     
         1 . A ventilation mask, comprising:
 a mask body having an inner surface defining a patient cavity, a peripheral edge forming a patient opening into the patient cavity, and a vent opening formed through the mask body, wherein the vent opening is in fluid communication with the patient cavity;   a gas manifold coupled to the mask body and forming a gas channel, the gas manifold comprising a plurality of gas ports in fluid communication with the gas channel; and   a sampling cover comprising a sampling arm and a sampling portal extending through the sampling arm, wherein the sampling cover is coupled with the mask body such that the sampling arm extends into the vent opening.   
     
     
         2 . The ventilation mask of  claim 1 , wherein a sampling channel is formed by an inner surface of the sampling cover and is coupled to the sampling portal. 
     
     
         3 . The ventilation mask of  claim 2 , wherein the sampling channel formed between the inner surface of the sampling cover and the gas manifold. 
     
     
         4 . The ventilation mask of  claim 2 , wherein the sampling channel is formed between the inner surface of the sampling cover and an outer surface of the mask body. 
     
     
         5 . The ventilation mask of  claim 2 , wherein the sampling cover comprises a sensing port extending through an outer surface of the sampling cover, and wherein the sampling channel extends between the sampling portal and the sensing port. 
     
     
         6 . The ventilation mask of  claim 2 , wherein a tube is positioned within the sampling channel and a first end of the tube is coupled to the sampling portal. 
     
     
         7 . The ventilation mask of  claim 6 , wherein a second end of the tube is coupled to the sensing port. 
     
     
         8 . The ventilation mask of  claim 1 , wherein the sampling channel is fluidly isolated from an ambient atmosphere adjacent to an outer surface of the mask body. 
     
     
         9 . The ventilation mask of  claim 1 , wherein the gas manifold is coupled to the inner surface of the mask body. 
     
     
         10 . The ventilation mask of  claim 1 , wherein the sampling cover is coupled to an outer surface of the mask body. 
     
     
         11 . The ventilation mask of  claim 1 , wherein a portion of the protrusion extends into the patient cavity. 
     
     
         12 . The ventilation mask of  claim 1 , wherein the sampling portal is positioned at an angle ranging from approximately 30 degrees to approximately 60 degrees in either direction from a longitudinal axis that intersects a top center of the vent opening. 
     
     
         13 . The ventilation mask of  claim 1 , wherein the sampling portal is positioned at an angle from a top center of the vent opening by approximately 45 degrees. 
     
     
         14 . The ventilation mask of  claim 1 , wherein the sampling portal is positioned between the plurality of gas ports and the vent opening. 
     
     
         15 . A ventilation mask, comprising:
 a mask body defining a patient cavity, the mask body comprising a patient opening in fluid communication with the patient cavity, and a vent opening formed through the mask body, the vent opening in fluid communication with the patient cavity, wherein the vent opening is disposed generally opposite to the patient opening;   a gas manifold coupled to the mask body and forming a gas channel, gas manifold comprising a plurality of gas ports in fluid communication with the gas channel; and   a sampling cover comprising a shroud forming a sampling portal, wherein the sampling cover is coupled to the gas manifold to form a sampling channel therebetween, such that the shroud extends toward the patient cavity and the sampling portal is fluidly coupled to the sampling channel.   
     
     
         16 . The ventilation mask of  claim 15 , wherein the gas manifold is coupled to an inner surface of the mask body. 
     
     
         17 . The ventilation mask of  claim 15 , wherein the sampling cover is coupled to the gas manifold. 
     
     
         18 . The ventilation mask of  claim 15 , wherein the sampling portal is positioned at an angle from a top center of the vent opening by approximately 45 degrees. 
     
     
         19 . The ventilation mask of  claim 15 , wherein the sampling portal is positioned between the plurality of gas ports and the vent opening. 
     
     
         20 . The ventilation mask of  claim 15 , wherein the sampling channel extends between the sampling portal and a sensing port.