Wireless Patient Monitoring System Digital Health Section Professor: Patricia Mellodge May 4, 2012

 The use of electronics; in or on the body to assist medical professionals when treating various illnesses and ailments  Projects can focus in three main areas  Prevention  Diagnosis  Curing What is Digital Health?

 Prevent further injuries  Wireless reduces risks  Collect information from patient  Location  Temperature Wireless Monitoring System

 First Ideas:  Wireless Patient Monitoring System  Pollution Filter Mask  Oxygen Tank Flow Regulator  Orthopedic Shoes  Arthritic Glove Project Selection Process

 Voting: Ranked Projects 1-5  Top three projects discussed  Weighed pros and cons  Overall compatibility as a class/group project Project Selection Process

 Top three choices were: Wireless Patient Monitoring System, Pollution Filter Mask, and The Oxygen Tank Flow Regulator  Choose Wireless system because:  Filled all digital health requirements  Whole class could contribute  Relevant use in real world  Very broad consumer base  Integrates and improves already existing concepts Results

 To construct a wireless system containing:  a hospital bed  co mputer monitor  a patient sensor rig  which would alert an outside party of a patient’s position and medical status. Objective

Project Schedule WeekTask Weeks 1-4 (Jan. 27-Feb.18)Brainstorm and create a project plan Week 5 (Feb.19-25)Create a parts list Week 6 (Feb. 26-March 3):Order parts and create mid-semester presentation Week 7 (March 4-10)Mid-semester presentation Week 8 (March 11-17)Create schematics and begin assembly Week 9 (March 18-24) Spring Break (each group needs to start writing for final report) Week 10 (March 25-31)Continue assembly Week 11 (April 1-7) Finish assembly, begin testing, and continue to work on final report Week 12 (April 8-14) Start troubleshooting and continue to compile final report Week 13 (April 15-21)Finalize prototypes, compile presentation, and edit report Week 14 (April 22-28)Prepare final presentation and edit final report Week 15 (April 29-May 5)Final Project Presentation due May 4 at 8:30AM Week 16 (May 6-12)Final Report due on May 11 at 8:30AM

 Patient Group  Nathan Coutermarsh  Dillon Quadrato  Dana Subki  Loay Alabdulmohsin  Jason Jolles  Kevin Veilleux  Alyssa Broatch  Melvin Peralta  Stacey Dufrane Groups  Nurse’s Station  Alex LaMarche  Shanique Jiles  Tim Zimmerman  Luis Luna  Bed Group  Feng Chen  Gino Cardone  Benjamin Basso  Jeremy Harvey  Rajin Roophnath  Stephen Sett  Matthew Smith

Wireless Patient Monitoring System

Bed Monitoring: Objective  Bed sensors determine if patient is in bed  Switches in a grid pattern are used to determine the patients location  Can be used in various settings

 6’ x 2’ egg crate foam mattress pad  2 sheets of 6’ x 2’ plywood  12 contact switches  Microcontroller  Miscellaneous assembly hardware  Power source (lithium battery) Bed: Materials

 Contact Switches  The switches are constantly open unless depressed by a patient on the bed.  This will send a high(1) signal to the microcontroller Bed: Materials Switch Trigger

Bed Monitoring: Design  One sheet of plywood serves as a base, while the switches are mounted on top of it.  The second sheet of plywood has holes drilled in it.  When the switches are depressed, they are flush with the top sheet of plywood.  Egg crate foam pad rests on top of the plywood to create a comfortable sleeping environment.

First Design New Design

Prevention of accidents through awareness of patient status, accurate monitoring of position, temperature, and orientation Patient: Objective

 Use a microcontroller to wirelessly transmit information from:  Temperature sensor  Accelerometer and tilt sensors  Indicate body orientation and location Plan

Accelerometer and tilt sensors- Specifications: for each and picture Temperature sensor

Patient Original image obtained from: Tilt Sensors Armband Patient Rig Supports mobility Unobtrusive location Lightweight design Accelerometer

Patient: Armband Image obtained form:  Easy to maneuver and lightweight  iPod Armband houses the enclosure of parts  Altered iPod Armband will house enclosure

 To make a presentable way to show the nurse the information on each patient that needs to be monitored  We take data from the sensors taken from the other groups and present them in an organized manner Nurse’s Station: Objective

 Through LabVIEW, we will:  Receive data from transceiver  Parse the sensor data from the data packet  Utilize algorithms to filter accelerometer data  Display the patient's information to the user Nurse’s Station: The Plan

 LabVIEW is used to display the information obtained from the patient and bed sensors  Transceiver will request and receive packets of data from all the sensors on the network  USB dongle is used to integrate the transceiver with the computer Nurse’s Station: Parts

Nurse’s Station: LabView Demo

Outline

Proof of concept(Bed to Nurse’s Station)

LabVIEW Code

The Final Nurse’s Station

 Goal was to shop efficiently  Buy only essential parts  Buy the cheapest compatible parts  Research each part individually  Write a proposal  Have it approved Budget < $350

Patient Group Part NamePart NumberPriceQuantityVendorPart Use 4 Way Tilt SensorSEN-10313$2.95 each3 Sparkfun Electronics Patient Orientation Triple Axis Accelerometer Breakout - MMA7361 SEN-09652$ Sparkfun Electronics Patient Motion Xbee 1mW Chip Antenna- Series 1( ) WRL-08664$22.95 each3 Sparkfun Electronics Communication ARduino Nano version3.0RB-Gra-01$32.99 each2RobotShop Analyze/Transmit Information Gens ace batteries 98P-20C S1P-2222-Asoft $5.803HobbypartzPower Supply Voltage Regulator-3.3VCOM-00526$1.95 each3 Sparkfun Electronics Regulate Voltage Temperature SensorLM34DZ$2.51 each2Digi Key Patient Temperature RPI-1031 Tilt-a-Whirl Breakout SEN-10621$6.99 each3 Sparkfun Electronics Patient Orientation

Part NamePart NumberPriceQuantityVendorPart Use Xbee 1mW Chip Antenna- Series 1( ) WRL-08664$22.95 each3 Sparkfun Electronics Communication SPDT Switch Without Roller $3.19 each12Radio ShackPatient Location ARduino Nano version3.0RB-Gra-01$32.99 each2RobotShop Analyze/Transmit Information Egg Crate Convoluted 3 Inch Foam Mattress Pad/Topper Twin Size ASIN: B000MZYDF6 $33.481AmazonPatient Comfort Gens ace batteries 98P-20C S1P-2222-Asoft $5.803HobbypartzPower Supply Voltage Regulator-3.3VCOM-00526$1.95 each3 Sparkfun Electronics Regulate Voltage Sheet of Plywood 4' x 8'166030$24.771Home DepotBed Foundation Bed Group

Part NamePart NumberPriceQuantityVendorPart Use Xbee Explorer DongleWRL-09819$ Sparkfun Electronics Communication Xbee 1mW Chip Antenna- Series 1( ) WRL-08664$22.95 each3 Sparkfun Electronics Communication Nurse’s Station

 Patient Group- $77.49  Bed Group- $  Nurse’s Station- $47.89  Grand Total- $ Total Cost

 Add Movie Test Results

 Split into Comparison Table:  Temperature was:  Position was : Results

 A wireless system has several advantages such as:  Patient safety  Low maintenance  Ease of mobility for the caretaker/patient  Capacity for transmitting information  No need for a bulky monitoring station Advantages

 Satisfies a demand for monitoring:  Unattended falls, heart attacks, fevers, and several other medical mishaps  Societal demand for this system due to staffing constraints  Applicable in a home setting  Easy interface with future link to app on portable phone Advantages

 Addition of different sensors  Heart rate  EKG  Farther transmission range  Ability to monitor more patients Possible Improvements

Questions?