Abstract: 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.

Abstract: Briefly, the invention is a vibrating, form fitting skull cap which is designed to snugly fit a user. The inner portion of the cap presents a smooth continuous surface to the head while at the same time providing the capability of complex and subtle vibration patterns which may vibrate different areas differently. Suitable attachment points are provided on the outer portion of the cap to mount individual forced vibration generator units. Each vibration generator unit is separately controlled as to amplitude and frequency. The user may choose one or many of numerous available attachment points for the generators. Electrical controls are provided to fine tune the individual units. Numerous electrical power input alternatives are provided for flexibility of use. Pneumatic powered units may also be used to eliminate magnetic fields if necessary.