Team Members:Production CharacteristicsMiscellaneousProduct Design SpecificationBME 301-Portable Patient Training Device for Lung Cancer TreatmentTeam Members:Thomas Chia – LeaderJason Ethington – BWIG Brent Geiger - BSACKawai Chan - CommunicatorAdvisor: Willis Tompkins, Ph.D. Revision date – April 30th, 2004 Problem Statement: 4-D tomotherapy treatment outcomes for lung cancer depend on the stability and repeatability of a patient’s breathing pattern. A portable patient training system is desired to allow more practice for the patients. The portable device will measure a patients breathing pattern, then display the guiding cycles and provide feedback on the patient’s current breathing curve on the display of a Pocket PC.Client Requirements:- Device should be portable and be able to be used at the patient’s home- Display should show patient’s breathing pattern superimposed on the guiding cycles- Device should be easy to use and comfortable for the patient- The client envisions three major components to the device:1. Breathing measurement device2. Signal processor3. Personal Digital Assistant (PDA) + softwareDesign Requirements:Physical and Operational Characteristicsa. Performance requirementsMust be portable and intuitive to use by the patient. Able to be attached/operated solely by the patient. Simple to operate and as unobtrusive as possible.b. Safety Must not harm patient in any way. Device will not have any sharp areas, exposed wires, or abrasive material. All wires/electrical components should be consolidated into one location and should not come in contact with the patient. All currents and voltages used should not pose any risks to the patient. Minimal effort needed to transport and operate device.c. Accuracy and ReliabilityMust be able to accurately calibrate the patient’s natural breathing cycle. Afterwards, must accurately measure that patient’s breathing in real-time and display its position in reference to the guiding cycle. d. Life in ServiceMust be in service for as long as patient is able to utilize the device. PDA batteries should be replaced when necessary. Proper operation should be checked for each week. Major calibration checked for every patient. e. Shelf LifeThe shelf life will be five years stored at room temperature in a dry location.f. Operating EnvironmentThis device will be used in a home environment. It will be subjected to constant use by multiple patients. The device may be subjected to fluids and/or dust caused by everyday use.g. ErgonomicsDevice should be comfortable and not affect the patient’s natural breathing pattern. PDA display should be easily readable. Device should not require significant strength to assemble. h. SizeThe device must fit for a range of bodily sizes. Needs to be easily portable for thepatient and contained in a box for easy transport. i. WeightThe entire device should not weigh more then 2 kg. j. MaterialsThere are no restrictions on materials.k. Aesthetics, Appearance, and FinishDevice should not appear dangerous or fragile to the patient. Production Characteristicsa. QuantityOne prototype.b. Target Production Cost$600Miscellaneousa. Standards and SpecificationsHuman subjects testing approval may be required.b. CompetitionNo devices are known that accomplish this
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