Abstract: A mouth guard senses impact forces and determines if the forces exceed an impact threshold. If so, the mouth guard notifies the user of the risk for injury by haptic feedback, vibratory feedback, and/or audible feedback. The mouth guard system may also remotely communicate the status of risk and the potential injury. The mouth guard uses a local memory device to store impact thresholds based on personal biometric information obtained from the user and compares the sensed forces relative to those threshold values. The mouth guard and its electrical components on the printed circuit board are custom manufactured for the user such that the mouth guard provides a comfortable and reliable fit, while ensuring exceptional performance.

Abstract: A gasket with a first layer and a second layer of gasket material joined to the first layer with a sealant chamber formed between the two layers is provided. The first and second layers have a plurality of first passageways that are sealed with a rupturable membrane to protect the sealant contained within the sealant chamber. The gasket has at least one second passageway to accommodate flow ways and fastener devices associated with two the opposing surfaces to be sealed with the aid of the gasket described herein. The gasket has a circumferential compressible barrier means to provide a barrier to the flow of the sealant into the second passageways.