Abstract: A portable suction pump for life-saving purposes and normally driven by compressed gas. The pump includes a pump assembly having a suction chamber with an outlet leading to the ambient atmosphere and an inlet communicating with a secretion-receiving reservoir with attached tubing permitting suction of secretion, primarily from the air ducts of an unconscious patient. The pump is characterized by the pump assembly having a housing enclosing the suction chamber and closed at one end by a first annular diaphragm and, centrally sealingly attached thereto, a rigid body guided for movement relative to the housing and having wall portions defining, together with part of the housing, a motor chamber delimited from the suction chamber by a second annular diaphragm. The motor chamber communicates with a driving gas supply and exhaust connections and a valve arrangement for the intake and exhaust of compressed driving gas.

Abstract: An attachment device for use in a tracheal aspirator comprising a hand-held container with rigid walls having a secretion inlet opening with an inside diameter sufficiently large to permit passage of solid particles and an outlet opening for connection to the suction tube of a pump. The device further comprises a secretion suction tube of correspondingly large inside diameter and a length just sufficient to enable the device to be operated in front of the mouth of the patient. One end of the suction tube is received by the secretion inlet opening of the container. The inside diameters of the secretion inlet opening and suction tube are between 6 and 12 millimeters and the length of the suction tube is in the range between 200 and 300 millimeters.

Abstract: A manually operated lung-venting apparatus includes a self-expanding bladder having a bladder inlet through which treating gas is drawn into the bladder during expansion thereof and a bladder outlet through which treating gas is driven out of the bladder during compression thereof. The apparatus further comprises a valve device having a housing attached to the bladder; and inlet chamber in the housing; a valve inlet for establishing communication between the bladder and the inlet chamber; a valve outlet which is in continuous communication with the inlet chamber and which is adapted to be connected to the respiratory system of a patient.

Abstract: A device for administering to a patient a mixture of a first gas and at least one second gas in a desired, predetermined ratio between 0 and 100%, includes a self-expanding, lung-venting bladder having an inlet through which the gases are introduced into the bladder and an outlet through which the gases are administered to a patient, and a check valve controlling the bladder inlet for preventing the gases from escaping from the bladder through the bladder inlet. The first gas is supplied to the device by a non-pressurized system, while the second gas is supplied under pressure. The bladder is adapted to expand for drawing the gases thereinto through the bladder inlet and to be compressed for discharging the gases therefrom through the bladder outlet. The device further includes a suction valve which has a housing defining a chamber; a valve outlet disposed centrally with respect to the chamber and connected to the bladder inlet for maintaining communication between the chamber and the bladder inlet.

Abstract: A dummy for teaching mouth-to-mouth and mouth-to-nose resuscitation, has a head shaped to generally correspond to a human head; simulated mouth and nose openings; and a trunk connected to the head by a neck. The trunk has a hollow part simulating the human thorax. The trunk defines an air-tight, self-supporting container which simulates the human torso and lungs. The container has an oblong cross-sectional configuration at least in the zone of the thorax and is connected with the mouth and nose openings by means of a conduit simulating the human windpipe. The trunk wall is resilient at least in the zone of the thorax to undergo outwardly directed elastic deformations by the pressure of insufflated air for effecting changes in the volume of the container in response to insufflation and simulate the movement of the human thorax.