Abstract: A tracheal tube (e.g., an endotracheal tube) includes an inserting cannula (that may be able to swivel), and wherein the inserting cannula is connected to an elbow adaptor through a Bayonet Neill-Concelman (BNC) connection. The BNC connection may provide more secure connection of the corresponding components and may be able to withstand greater amounts of force exerted on them without becoming detached from each other. The elbow adapter may further be coupled to a pressure release valve that will alleviate pressure buildup within the tracheal tube.

Abstract: An ultrasonic pest deterrent system is described. An embodiment of the present invention produces ultrasonic sound waves using a direct current power source and can vary the frequency of the generated sound waves. Deterrence can be further enhanced by varying the timing and intensity of the sounds as well. The system can be hard-wired to a D/C power source such as a car battery or it can connect via a removable attachment such as a cigarette lighter plug. Remote operation is contemplated.