Abstract: An occlusive device is disclosed for surgical implant to occlude the lumen of an internal organ. The device includes a cuff A having a backing collar (10) and two isolated cuff chambers B and C. The fluid pressure of chamber B is regulated by a pump/valve reservoir unit E. Chamber C is unregulated in pressure but its fluid volume is adjusted by removing or adding fluid to a septum/reservoir D by means of a hypodermic needle. Pressure changes are transmitted between the two cuff chambers via faying surfaces (12) and (14) which are sufficiently large in contact area and thin as to transmit pressure generally without attenuation. By adjusting the fluid volume of septum D, the operating pressure of the device may be adjusted to accommodate tubular organs of different diameter sizes as well as to compensate for changes in the organ following implant without re-operation.

Abstract: A source of pressurized gas is attached to a dynamic pressure wave appliance. The pneumatic control circuit connects the source of pressurized gas to a first chamber of the appliance. When the pressure in the first chamber reaches a first predetermined level, a valve seals the first chamber and connects the source so as to inflate a second chamber about the first. When the pressure in the second chamber reaches a second predetermined level, a valve permits the first chamber to deflate while continuing to connect the second chamber for inflation. A valve for sealing the inflated sleeve discontinues the inflation of the sleeve when the pressure therein reaches a third predetermined level. The sequence of operation of the pneumatic control circuit will cause a suitable dynamic pressure wave appliance to apply a pressure to a human or animal extremity which begins at the most distant end and travels up the extremity in the nature of a pressure wave.

Abstract: An external cardiac compression alarm system is disclosed comprising an inflatable balloon which may be inserted through the esophagus into the chest region of a patient undergoing cardiac arrest, said balloon being connected by a tube to a pressure gauge. The pressure gauge, in turn, is connected to a speaker which may emit two tones. There are two switches provided on the pressure gauge, one switch corresponding to a desired minimum degree of pressure to be exerted on the patient and the second switch corresponding to a desired maximum degree of pressure such that when the first switch is activated by the pressure gauge, the speaker emits one tone and when the second switch is activated, the speaker emits a second tone, thereby providing both audio and visual feedback immediately to a person performing external cardiac compression.

Abstract: A drinking device for underwater divers enables divers to drink while engaged in diving to provide moisture in the mouth and lungs. The device includes a container with a chamber for holding liquid and a passage leading to the chamber. A valve opens and closes the passage. The container has a pressure compensator for equalizing pressure in the chamber with exterior hydrostatic pressure. In the method, liquid is placed in the chamber. The diver provides suction on the end of the tube to draw liquid past the valve, then closes the valve. This displaces air from the container for diving.

Abstract: The elastic properties of skin are measured by applying a torque to a disc placed in contact with a portion of the skin while holding a guard ring against skin around the region to define an annular skin sample to be stressed. Rotation of the disc is measured, and then the rotation is partially reversed and the torque-applying connection to the disc removed. The recovery rotation of the skin in the substantial absence of any applied torque is then measured.

Abstract: An electrode belt made up of a strip of pile-backed foam on which a sheet of conductive silicone rubber is mounted by a snapped together fastener which clamps the sheet to the belt and compresses the sheet to form a suction cup when the belt is applied against the skin of the patient, especially when coated with conductive gel or water. The snap fastener provides means for convenient connection to the electrode leads for an apnea detector, an electro-cardiograph or a recorder for pneumogram or cardiogram signals which are transmitted through the conductive sheet and the fastener to the leads.

Abstract: The device comprises a hollow, soft rubber baglet which is mounted in the front of a curved shield which positions the baglet in the infant's mouth. The shield is provided with an elongated rectangular opening having peripheral extensions forwardly and rearwardly to form a socket opening. The forwardly extending portion is wider to form a shoulder at the front of the shield. A pair of spaced flat rectangular members are joined at their central rear edges by an integral loop which loosely holds the circular handle for the device. The flat members are provided adjacent their front outer ends with wedge portions forming exterior shoulders. At their opposed faces, the flat members are provided with raised transverse strips which act as pivotal separators for the members. The baglet is pulled through the shield opening so that its open beaded end faces rearwardly. The flat members are inserted in the baglet opening and the assembly is then forced into the rectangular opening in the shield.