SURGICAL FACE MASK, INCLUDING REUSABLE MASKS, WITH FILTERED INHALATION AND EXHALATION VALVES

摘要

Face masks that can be used, for example, in medical and surgical procedures, including both completely or partially disposable and reusable masks, that can be custom fitted to the wearer, and which can include one or more filtering inhalation and exhalation valves and/or compartments allowing for separated filtering of inhalation and exhalation gases. Some embodiments include systems, methods and kits for reducing contaminants in an inhalation and exhalation flow stream.

主权项

1. A face mask comprising:
a generally cup shaped mask body comprising an interior surface, an opening having a peripheral edge shaped to generally follow a contour of a human face extending around the nasal and oral areas, a recess shaped to receive oral and nasal features of a human face, and an exterior surface opposite the interior surface; a first semi-pliable or metal strip on the exterior surface of the peripheral edge; a second semi-pliable or metal strip on the interior surface of the peripheral edge; a heat-activated thermoplastic member coupled to the peripheral edge, wherein the heat-activated thermoplastic member extends around at least a portion of the peripheral edge and extends over the first semi-pliable or metal strip, over the second semi-pliable or metal strip and onto the exterior and interior surfaces of the mask body, respectively; an exhalation valve disposed on the mask body and having a first orifice that allows exhaled air to pass from an interior gas space to an exterior gas space during an exhalation; and at least one inhalation valve disposed on the mask body having a second orifice that allows inhaled air to pass from an exterior gas space to an interior gas space during an inhalation, wherein said at least two valves each comprise a filter element; and at least one retention member attached to said mask body.