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 Every year Vanderbilt University Medical Center loses $600k+ Blood units need to be stored below 10 degree C; if it goes above that temperature, it is discarded Many cases of wasted blood units are unreported. Dr.
France & Dr. St. Jacques 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
1691 unit of blood products are lost at Vanderbilt Medical Center over a 7 month period.
Blood stored at room temperature in plastic bags make it susceptible to development of bacteria (sepsis), which may lead to mortality.
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 and prevent blood units from being used incorrectly? Smart Dust from Crossbow
Technology to monitor the blood units!
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 units of blood came from Dr. Dan France, our advisor, a Research Assistant Professor of Anesthesiology and of Medicine.
Project DefinitionProject Definition
Objectives: To design a system that monitors the temperature of blood in bags and wirelessly transmits this information through a mesh network to a central server from which a staff member can be alerted if there are any complications with the bags.
Proposed ImplementationProposed Implementation
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 ImplementationProposed Implementation
Advantage Modularity in Design One time cost No need for specific
bag manufacturer
Disadvantages Human error Cooling interference
Proposed System InterfaceProposed System Interface
Blood bag
Smart Dust
Blood bag
Smart Dust
Mote
Gateway
OR or ER
PC
PC: -database -Mote-VIEW
Blood Bank
Market PotentialsMarket Potentials
Clients: hospitals and blood banks Competitor: currently there are no
competitors with similar project objectives
Social ImpactSocial Impact
Less blood collection will be required from the blood banks
Preservation of life through better use of blood units
Work CompletedWork Completed
The devices have been ordered Mote (radio/processor module) MICA2DOT….$115.00
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
868/916 Multi-Channel Radio Transceiver (compatible with MICA2/MPR4xx Series) Prototype Sensor board Module MDA500……$30
Available to attach external analog input sensors
Serial Gateway………….……………………..$95.00
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QuickTime™ and aTIFF (LZW) decompressor
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QuickTime™ and aTIFF (Uncompressed) decompressor
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Work Completed (continued)Work Completed (continued)
Research completed VUMC loses $600k+ a year on blood wastage Blood cannot go above 10ºC Data acquisition module operates at 0V to 3V Formula for calculating
temperature using
MICA2DOT’s thermistor
Work Completed (continued)Work Completed (continued)
Research completed MICA2DOT
Interface
Current WorkCurrent Work
Research into software Mote-View Tiny OS nesC
Reviewing operating
manual for motes
Future WorkFuture Work
Building and refining a prototype Create server layer with
a database logger Alert method
ReferencesReferences
Dr. Paul St. Jacques Dr. Anne Neff Dr. Dan France Dr. Jim Hutchinson Mr. Efosa Ojomo
Questions?Questions?