1. Tracheostomy Care Overlay System J. Biggs, D. Bond, N. Campagnola, E. Doll, N. Hott Advisor: Dr. Liyun P. Wang Special Thanks to: Amy Cowperthwait UD Healthcare Theatre Program: Simulation laboratories that are operational with real life patient simulators allowing nursing students to experience realistic patient care. Background Tracheostomy Care: Cleaning, replacing and suctioning of the tracheostomy tube, changing the dressing around the stoma, as well as cleaning the area around the stoma; all of which require minimal manipulation of the face plate. Project Scope The UD Healthcare Theatre Program is looking to improve upon the current training mannequins by developing a wearable system for a real life patient simulator that will provide nursing students with realistic, tracheostomy care patient feedback during simulations. Design Requirements The following six needs are ranked according to importance: 1. Safety 2. Realistic 3. Ease of Use 4. Cost Effective 5. Durable 6. Comfort MetricsTarget ValuesReference FDA safety regulation preparation Class 3 testingAppendix A Number of Trigger Actions3Sponsor Number of Lung Sounds 4(clear, mucus, fluid, collapsed) Sponsor Location of lung sounds (in) 1" radius around 4 standard locations Testing with Sponsor Allowable force applied to faceplate (lbs) 2.2 lbs Testing with Sponsor Allowable rotation of faceplate (deg) 4.094 deg from horizontal Testing with Sponsor Simulator notifications cannot be detected by nurse YesSponsor Installation time (minutes)10-15 minutes Simulation debriefing time, Duration of simulation (minutes) > 20 minutesSponsor Final Prototype Concept Generation Lung Sound Speakers and Control: 1. Wireless control 2. Wired control 2. Spring and Circuit Sensor: 1. Tactile Force Sensor Force/Rotation Detection: Prototype Testing and Validation To test the design, a prototype of our final concept was built. This prototype allowed for testing of each component as well as system level testing. Additionally, testing was able to be performed with UD Healthcare theatre actors, as well as nursing students and Customer Survey Review Survey results showed that it functions well as a learning device, as the sensors identified improper tracheostomy care accurately and the alerts can only be detected by the simulators. For comfort and ease of use, it was found that the device was easy to put on and take off, but that the comfort could be improved upon. Overall, the overlay system was thought to be more realistic, in appearance, than the current training mannequins and will enhance the tracheostomy care learning experience for nursing students. faculty to provide feedback on how realistic the device is, as well as its comfort and ease of use. Path Forward With funding from UD’s First Step Program, the team will continue to work on the overlay system by improving on the current prototype. The team will focus on improving the user interface for lung sound control, while also making the overlay more adaptable to a wider variety of body types. There will also be work done on the sensor system to increase individual sensor accuracy. After improvements have been made, the team will work on making the overlay more marketable with the ultimate goal of producing it on a large scale. Sensor Threshold Tests Target threshold values were found through background research and testing with our sponsor TestTarget ValueMeasured Value Force on Faceplate2.2 lbs2.19 ± 0.08 lbs Rotation of Faceplate4.01 deg5 ± 1 deg Bronchial Biforcation Touched-Yes Wireless control was chosen because it allowed for greater mobility and faster overlay set-up time Tactile force sensors were used due to the ability to give more accurate sensor readings and calibration The final design consists of two molded, thermop- lastic layers, encasing and protecting all of the inner components. These inclu- de the sensor system and lung sound speakers. To the right is the entire, assembled prototype. The picture below shows the inner compone- nts of the device.