Abstract: The present invention provides a pressurized metered dose inhaler (pMDI) system, comprising a transparent or partially transparent canister which permits a patient to view the amount of medicament remaining in the pMDI system. The system of the present also comprises a dose counter which counts a dose when a dose is dispensed. The present invention provides a pMDI system which is improved over those currently used for treating respiratory diseases.

Abstract: A detection-grid is disclosed that is part of a vehicle's thermal protection layer, such as that of a space shuttle. A hybrid digital/analog system detects electrical changes in the detection grid caused by mechanical trauma to a vehicle's external surface. The system produces timely and useful display of such events. Furthermore, with redundant verification of such real-time data, the vehicle can detach from other apparatus, such as an external fuel tank or booster rockets, to execute pre-planned glide or descent scenarios maximizing a crew's and vehicle's safe return before proceeding to orbit. The detection-grid ablates off during re-entry of a regular mission.