Post on 11-Jan-2016
transcript
Use of Smart Dust in Blood Unit Temperature Monitoring
Group 25
James Lin BME
Adam Lowisz CompE
Advisor Dr. Dan France
Advisor Dr. Paul King
BackgroundBackground Blood units need to be stored below 10 degree C; if it goes above that temperature, it is discarded.Patricia Blocker, Supervisor of Blood Bank
Blood stored at room temperature in plastic bags make it susceptible to development of bacteria (sepsis), which may lead to mortality.
Many cases of wasted blood units are unreported. Dr. France & Dr. St. Jacques of Anesthesiology Dept.
Improper handling causes blood to be wasted; many “blood units are returned without any used, and many are never even picked up.” Dr. Anne Neff
NumbersNumbers
3922 units of blood products are lost at Vanderbilt Medical Center in 2001; of those, 2292 units resulted in financial loss.
$215/ pint of blood. Every year Vanderbilt University
Medical Center loses $600k+ on blood unit losses. Dr. France
Significant cost associated with collecting, testing, preparing components, labeling, storing and
shipping
Significant cost associated with collecting, testing, preparing components, labeling, storing and
shipping
Significant cost associated with collection Collecting Testing Preparing components Labeling Storing and shipping blood Recruiting and educating
donors Quality assurance
Hepatitis B surface antigen (HBsAg) Hepatitis B core antibody (anti-HBc) Hepatitis C virus antibody (anti-HCV) HIV-1 and HIV-2 antibody (anti-HIV-1 and anti-HIV-2) HTLV-I and HTLV-II antibody (anti-HTLV-I and anti-HTLV-II) Serologic test for syphilis Nucleic acid amplification testing (NAT) for HIV-1 and HCV NAT for WNV
Problem DescriptionProblem Description
What can we do to preserve the blood units through temperature monitoring and prevent blood units from being handled improperly? Smart Dust from Crossbow
Technology to monitor the blood units!
Crossbow Wireless Smart DustsCrossbow Wireless Smart Dusts Mote, also called processor/radio module MICA2DOT
3rd Generation, Quarter-sized (25mm), Wireless Smart Sensors TinyOS - for communications and processing Battery Powered - Low Mass Wireless Communications with Every Node as a Router
Capability 433 MHz Multi-Channel Radio Transceiver (compatible with
MICA2/MPR4xx Series) Prototype and Data Acquisition Board MDA 500
Allows connection to all of the major I/O signals of the MICA2DOT
Serial gateway MIB510 Low-Voltage Detection Circuit MICA2DOT LEDS mirrored on board for easy debug No computer parallel port is needed for programming Addresses and fixes the issues related to UISP programming problems, flash
errors.
Mote + Sensor = Smart Sensor!
Project SolutionProject Solution
Motivation: The project was motivated by the Crossbow Smart Dust Challenge to use smart dust and wireless technology to positively impact society.
Idea for monitoring blood bags to prevent wasting blood came from Dr. Dan France, our advisor, a Research Assistant Professor of Anesthesiology and of Medicine.
Project DefinitionProject Definition
Objectives: To design a prototype that monitors the temperature of blood units and wirelessly transmits data through a mesh network to a central server from which staff can be alerted if there are any complications with the bags.
Proposed System InterfaceProposed System Interface
Blood bag
Smart Dust
Blood bag
Smart Dust
Mote
Gateway
OR or ER
PCPC: -database SQL -Mote-VIEW & Surge-VIEW -Cygwin nesC
Blood Bank
Serial connection
Proposed Blood Unit to Smart Dust Interface 1
Proposed Blood Unit to Smart Dust Interface 1
Advantages Ready to use Attached to bag
implies less error Disadvantage
Need a specific manufacturer for electronics sleeve
Can cost more in long term
Proposed Blood Unit to Smart Dust Interface 2
Proposed Blood Unit to Smart Dust Interface 2
Advantage Modularity in Design One time cost No need for specific
bag manufacturer
Disadvantages Human error Cooling interference
Market PotentialsMarket Potentials Clients: hospitals and blood banks Competitor: currently there are no competitors with
similar project objectives Cost of prototype is accessible to most hospitals. Roughly $530 for 1 gateway to PC, 3 motes, and 3
external data prototype boards; able to monitor 2 blood bags simultaneously
Application Characteristcs No or little IT infrastructure Cabling cost and time: $40 to $2000 / foot
Assumptions Traditional Sensor NetworksSensor Cost $2,00 $350Data Acquisition Cost $65 $0Wiring Cost $75 $15Cost per Sensor $2,140 $365
Total Cost $139,100 $23,725
Social ImpactSocial Impact
Less blood collection will be required from the blood banks
Preservation of blood unit products Preservation of life through better
use of blood
Work CompletedWork Completed
The devices have been ordered and received. Mote (radio/processor module) MICA2DOT….$115.00 Prototype Sensor board Module MDA500……$30
Available to attach external analog input sensors
Serial Gateway………….……………………..$95.00
Work Completed (continued)Work Completed (continued)
The devices have been assembled Multitude of material reading
material that came with the devices has been read
Work Completed (continued)Work Completed (continued)
Research completed MICA2DOT
Interface
Programming the motes trying out small sample applications on a CD that came with
the motes trying to program event detection programming interrupt functions
Testing the motes do they communicate with the computer? do the LED’s work? is the gateway interfacing with the computer? is code running on the mote processors? is the thermoster working properly?
Testing software Mote-VIEW & Surge-VIEW
Current WorkCurrent Work
Future WorkFuture Work
Obtaining a blue print of the Free Electron Laser Center for possible prototype testing and deployment
An in-depth cost analysis of implementing the system in all the OR’s
Correspondence with other blood banks (e.g. Red Cross) in the area to gather additional interests/investment in the project
ReferencesReferences
Dr. Paul St. Jacques Dr. Anne Neff Dr. Dan France Dr. Jim Hutchinson Mr. Efosa Ojomo http://www.svch.net/bloodless/press_blood_supply.a
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Questions?Questions?