Abstract: A mouth guard includes a pair of spaced-apart molar receiving members with an inner wall extending therebetween. The inner wall is configured for insertion between a user's lips and teeth. An outer wall is configured to confront an exterior surface of the user's lips. A conduit extends between the inner and outer walls and includes a passage formed therethrough. The passage extends through the inner wall between the molar receiving members and extends through the outer wall whereby a user may breathe or drink through the passage.

Abstract: An impact sensing device including a plurality of accelerometers orthogonally oriented with respect to each other and attachable at a body location, each capable of producing signals indicative of impacts. An integrated circuit is configured to determine the magnitude and direction of the impacts based on the signals and operative to activate an indicator when the magnitude exceeds a first threshold based on the direction of the impact and when the magnitude exceeds a second threshold more than a selected number of times. A head injury coefficient is determined based on the magnitude and a duration of the impact, and the threshold level of acceleration is expressed in terms of a head injury coefficient value, which is determined by empirically correlating a head injury coefficient measured at the body location and a head injury coefficient measured at the center of mass of a human head resulting from an impact.

Abstract: A mouth guard includes a pair of spaced-apart molar receiving members with an inner wall extending therebetween. The inner wall is configured for insertion between a user's lips and teeth. An outer wall is configured to confront an exterior surface of the user's lips. A conduit extends between the inner and outer walls and includes a passage formed therethrough. The passage extends through the inner wall between the molar receiving members and extends through the outer wall whereby a user may breathe or drink through the passage.

Abstract: A mouth guard includes a pair of spaced-apart molar receiving members with an inner wall extending therebetween. The inner wall is configured for insertion between a user's lips and teeth. An outer wall is configured to confront an exterior surface of the user's lips. A conduit extends between the inner and outer walls and includes a passage formed therethrough. The passage extends through the inner wall between the molar receiving members and extends through the outer wall whereby a user may breathe or drink through the passage.

Abstract: An impact sensing device including a plurality of accelerometers orthogonally oriented with respect to each other and attachable at a body location, each capable of producing signals indicative of impacts. An integrated circuit is configured to determine the magnitude and direction of the impacts based on the signals and operative to activate an indicator when the magnitude exceeds a first threshold based on the direction of the impact and when the magnitude exceeds a second threshold more than a selected number of times. A head injury coefficient is determined based on the magnitude and a duration of the impact, and the threshold level of acceleration is expressed in terms of a head injury coefficient value, which is determined by empirically correlating a head injury coefficient measured at the body location and a head injury coefficient measured at the center of mass of a human head resulting from an impact.

Abstract: An impact sensing device including a plurality of accelerometers orthogonally oriented with respect to each other and attachable at a body location, each capable of producing a signal indicative of an impact. An integrated circuit is configured to determine the magnitude and direction of the impact based on the signals and operative to activate an indicator when the magnitude exceeds a selected threshold based on the direction of the impact. A head injury coefficient is determined based on the magnitude and a duration of the impact, and the threshold level of acceleration is expressed in terms of a head injury coefficient value. The head injury coefficient value is determined by empirically correlating a head injury coefficient measured at the body location and a head injury coefficient measured at the center of mass of a human head resulting from an impact.