| 摘要 |
A suction device for withdrawing an object obstructing the breathing passage of a choking victim. The device includes a vacuum pump comprising a cylinder housing a flexible plunger, an external for moving the plunger, and a face mask for applying vacuum to the face of the victim. The face mask seals the user's face against vacuum leakage. Optionally, the device has a conduit connecting the vacuum pump to the face mask, thereby enabling remote location of the face mask relative to the vacuum pump. The plunger is resilient and flexible, so that it deflects responsive to excessive vacuum, permitting air to bypass the plunger when deflecting. Vacuum is thus limited, in order to prevent injury such as collapsed lungs. Blockage of the device by the obstructing object after withdrawal by suction is prevented by a strainer. Obstruction of the plunger by an object entering the bottom of the cylinder is prevented by a grate protecting the open bottom. A flange having holes for accepting fasteners enables the suction device to be firmly mounted to an environmental surface. The novel suction device is convenient for persons who are apt to choke on food, or for fixed mounting in a place where many people periodically dine, such as a restaurant.
|
