Abstract: A mechanism and system for reversibly locking together concentric tubular components uses a projection on the outer tube for interacting with a component having a taper. When the larger outer tubing is forced along the inner tubing towards a limiting opening, a tapering section of the tube assembly is forced against the projection, thereby reversibly forcing the paired tubes into a locked position. The tubing can be unlocked by exerting pressure with one hand to separate the projection from the tapered section, thereby unlocking the tubing. Optionally, a second hub segment rides on the outer tube, and latches with a simple manual snap fit to the first hub segment. The mechanism and system is useful for locking and unlocking concentric tubing within a medical instrument, while leaving one hand free for other parts of a procedure.

Abstract: This invention defines a system for monitoring the brain activity of a human patient under anesthesia in order to determine the patient's level of consciousness. The system uses a plurality of receptors which are mounted in predetermined anatomical positions on the patient's head. The receptors are secured by adhesive foam patches. The appliance fits snugly to the head with the aid of self-adjusting strip that carry imbedded electrical circuitry for the receptors. Electrical connectivity in locations where scalp hair is most likely to be present is improved by the use of braille-tip electrodes fitted with large gel reservoirs.

Abstract: This invention defines a system for monitoring the brain activity of a human patient in order to monitor a patient's brain electrical activity. The system uses a plurality of receptors which are mounted in predetermined anatomical positions on the patient's head. The receptors are secured by adhesive foam patches. The appliance fits snugly to the head with the aid of self-adjusting strap that carry imbedded electrical circuitry for the receptors. Electrical connectivity in locations where scalp hair is most likely to be present is improved by the use of braille-tip electrodes fitted with large gel reservoirs.