Abstract: The present invention is related to a compact, portable, user-friendly sleep disorder diagnosis and screening device. The present invention is further related to a single-ended respiratory inductance plethysmography belt used to monitor certain parameters of a subject's respiration while at the same time serving to position and mechanically stabilize a compact data acquisition system about a subject's thorax or abdomen. In one application of the present invention to screen for sleep disorders, the single-ended respiratory inductance plethysmography belt is worn by the subject and a compact data acquisition unit is attached to the belt to which appropriate additional sensors and components such as a pulse oximeter and a nasal cannula are connected. Data is then collected using the belt, compact data acquisition unit, and sensors and is used to determine whether the subject has, or is at risk of having, a sleep disorder.

Abstract: The present invention is related to a flexible circuit connector as well as a system using the connector. The present invention further includes an electrical case comprising part of the flexible circuit connection system. Various embodiments of each the flexible circuit connector, flexible circuit system and electrical packaging integrated with the flexible circuit system of the present invention are possible. The flexible circuit connector of the present invention takes advantage of the stiffness of the flexible circuit to bias the circuit against leads in the connector. The flexible circuit connector can also be designed to provide for polarization (or only one means) to connect to the connector. In particular embodiments the connector can be designed into a circuit board, an electrical case or housing or into other types of connectors.