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US 4,811,730 AGranted
CPR face mask and method of using same
AssigneeSeitz Corporation
InventorArthur J. J. Milano
Life of this patent
Estimating the term…
Abstract
A resuscitation mask has a base member with an inflatable bladder about its periphery which will rapidly and effectively seal against the face of the patient upon initial flow of air into the mask from the rescuer. A delivery member causes air to flow to the bladder to effect the inflation and then a valve member precludes further inflation. A one-way valve and filter in the conduit from the delivery member to the base member precludes flow of air and body fluids from the patient to the mouthpiece, and diverts exhaled air to the atmosphere about the mask.
Claims13
In a mouth-to-mouth resuscitation device, the combination comprising:
- (a) a base member having a top wall and a depending sidewall extending about its periphery to define a plenum chamber within said base member;
- (b) an inflatable bladder extending about the periphery of said base member and adapted to form a seal about the nose and mouth of a patient;
- (c) a delivery member above said base member having a first conduit communicating with, said plenum chamber, a second conduit communicating with said bladder, and said plenum chamber, and an air feed orifice for introduction of air thereinto;
- (d) one-way valve means in said first conduit to permit passage of air from said delivery member into said plenum chamber and to preclude movement of air in the reverse direction;
- and
- (e) pressure responsive valve means in said second conduit permitting passage of air into said bladder to effect inflation thereof, said valve means automatically sealing in response to pressure within said bladder to prevent further flow of air therethrough upon establishment of a predetermined pressure in said bladder.
3 more elements
Dependencies are inferred from the claim text.