36x48 vertical poster template

1
A Software Toolkit for Ischemia Sensing Smart
Organ Retractor Shareef, Safiullah MENTORS
Fischer, Greg Saha, Sunipa Marohn, Michael
D.O. Engineering Research Center for Computer
Integrated Surgical Systems and Technology
LOGO
LOGO

• Excessive retraction forces for long periods of
  time may cut off the supply of blood and lead to
  tissue damage.
• There are currently few methods for measuring
  the forces used and the damage caused to
  retracted tissue during a surgical procedure
• Currently no studies of typical retraction
  forces and thresholds of damage

BACKGROUND
API OVERVIEW
Configure
SetPort SetBaudRate
DAQ
Start Stop
Get Raw Data
Thread Task
Set Input Gain Set Analog Output
Set Log File Start Logging Stop Logging
DAQ State Table (DAQStates)
DAQ State
-Time Stamp -Raw Data
Photos Ischemic Damage induced in Porcine Liver
during retraction Ischemia and Force Sensing
Surgical Instruments for Augmenting Available
Surgeon Information
Photo Surgical Retraction experiment in MISTIC
3/5/03

• Prototype for Smart Surgical Retractor has been
  developed by CISST in previous Computer
  Integrated Surgery design projects
• Placement of force and ischemia sensors on the
  Smart Organ Retractor will allow measurement of
  the effects of retractor force on ischemia in the
  tissue over time
• The retractor connects to a DAQ board which
  interfaces with a laptop computer via USB hub

CHART or PICTURE
PREVIOUS RESEARCH
DAQ Box pic

• CISST compliant, modular, API was developed
  that can interface with DAQ-based instruments
• Intra-operative porcine trials were done to
  test API
• Room for future work in improving the GUI and
  applying calculation functions
• API is applicable to other CISST DAQ surgical
  instruments

CONCLUSION

• Develop an API, for the laptop, to interface
  with the DAQ box
• An easy to use, modular interface for Sensing
  Instruments (e.g. Retractors) testing
• Must be CISST compliant
• Allow for connecting multiple instruments to
  the laptop
• Support logging of all data collected from the
  DAQ box
• Compute calculations on the collected data

OUR GOAL
Dr. Russell Taylor, Johns Hopkins Hospital,
Anton Deguet, Ankur Kapoor, Ozanan Meireles,
Carolyn Magee
ACKNOWLEDGEMENTS