Medical devices and methods for making and using the same are disclosed. A chest compression detector device is provided that measures chest compression during the administration of CPR. Through solving the puzzle, the individual letters of the puzzle word solutions are circled in turn and linked together with a straight line. Each cup may further include a plurality of protrusions to space the cups of the garment away from the convex member. By providing the cam with a symmetric actuating profile its followers can be linked to alternately actuate same-function valves in different engine cylinders. In response to receiving one or more IERR signals, the error detection logic is configured to assert and error detected signal that is received by error logging logic.