VENTILATION MASK

A mask for the delivery of a medical gas under positive pressure, the mask including a single shell forming a chamber having an outlet, a first passage connecting the chamber to the exterior of the mask, a sealing recess isolated from the chamber and open to allow engagement with the face of a user, and extending around the periphery of the outlet, and a second passage connecting the sealing recess to the exterior of the mask, the arrangement being such that operatively the mask may be placed on a user so as to cover the airway, suction may be connected to the second passage so that the sealing recess seals the mask against the face of the user, and a medical gas may be supplied to the first passage for delivery through the outlet to the airway of the user. 1. A mask for the delivery of a medical gas under positive pressure , the mask including a single shell forming a chamber having an outlet , a first passage connecting the chamber to the exterior of the mask , a sealing recess isolated from the chamber and open to allow engagement with the face of a user , and extending around the periphery of the outlet , and a second passage connecting the sealing recess to the exterior of the mask , the arrangement being such that operatively the mask may be placed on a user so as to cover the airway , suction may be connected to the second passage so that the sealing recess seals the mask against the face of the user , and a medical gas may be supplied to the first passage for delivery through the outlet to the airway of the user.2. A mask according to claim 1 , wherein the mask is operatively adapted to be retained in position on the user by the sealing recess.3. A mask according to claim 1 , wherein the sealing recess extends around the airway.4. A mask according to claim 1 , wherein the sealing recess extends continuously around the periphery of the outlet.5. A mask according to claim 1 , wherein the mask is formed so as to operatively resiliently deform and accommodate ...

RESUSCITATION AND VENTILATION MASK

A mask for the delivery of a medical gas under positive pressure. The engagement surface is generally circular in shape and is sufficiently rigid that operatively, when a suitable retention force is applied to the mask, an effective seal is produced at the interface of the engagement surface and the surrounding tissue primarily by deformation of the surrounding tissue. 1. A mask for the delivery of a medical gas under positive pressure to a user , the mask including a body having an interior space , an engagement seal for surrounding the airway of a user and engaging surrounding tissue , the interior space being adapted in use to communicate with a source of medical gas and deliver the medical gas to the interior space , wherein the surface of the engagement seal is generally circular in shape and has a consistent cross-sectional shape which is substantially part circular , so that the surface of the engagement seal is substantially part toroidal , and wherein the engagement seal is solid and sufficiently rigid that operatively , when a suitable retention force is applied to the mask , an effective seal is produced at the interface of the engagement seal and the tissue surrounding the airway of the user primarily by deformation of the tissue surrounding the airway , and without substantial deformation of the cross sectional shape of the of the engagement seal.2. A mask according to claim 1 , wherein the mask and engagement seal operatively flexibly adapt to the general shape of the user's face claim 1 , but the cross sectional shape of the seal does not deform substantially.3. A mask according to claim 1 , wherein the body of the mask is formed from a single material.4. A mask according to claim 1 , wherein the body is generally part conical claim 1 , extending from the engagement surface to an attachment for the supply of the medical gas.5. A mask according to claim 1 , wherein the engagement surface is formed from a material with a Shore A hardness of less than 25 ...

Resuscitation and ventilation mask

A mask for the delivery of a medical gas under positive pressure. The engagement surface is generally circular in shape and is sufficiently rigid that operatively, when a suitable retention force is applied to the mask, an effective seal is produced at the interface of the engagement surface and the surrounding tissue primarily by deformation of the surrounding tissue.

Resuscitation and ventilation mask

A mask for the delivery of a medical gas under positive pressure. The engagement surface is generally circular in shape and is sufficiently rigid that operatively, when a suitable retention force is applied to the mask, an effective seal is produced at the interface of the engagement surface and the surrounding tissue primarily by deformation of the surrounding tissue.

Resuscitation and ventilation mask

A mask for the delivery of a medical gas under positive pressure. The engagement surface is generally circular in shape and is sufficiently rigid that operatively, when a suitable retention force is applied to the mask, an effective seal is produced at the interface of the engagement surface and the surrounding tissue primarily by deformation of the surrounding tissue.

Resuscitation and ventilation mask

Resuscitation and ventilation mask