group 7: brian moraguez ashley morgan ryan murphy mentors: rajnish gupta eric briggs
TRANSCRIPT
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Flexible Stabilization Arm for Ultrasound Probes
BME 273 Oral Report
Group 7:
Brian Moraguez
Ashley Morgan
Ryan Murphy
Mentors:
Rajnish Gupta
Eric Briggs
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Problem Statement
Localized pain management surgeries require the use of three hands: one to insert a needle next to the nerve, one to hold an ultrasound probe, and one to thread the catheter.
This procedure requires the use of an additional assistant to lend the extra hand.
This increases the risk of contamination and the costs of the procedure
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Objectives
1- To research existing technologies in flexible stabilization arms and adapt a new idea around these existing one.
2 - To design a flexible arm with interlocking and flexible joints for use with ultrasound probes to aid in surgery
3 -To produce a working prototype for future modification and development
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Design Requirements
Flexible and movable arm with little resistance when out of tension.
When in tension, the arm must be rigid enough to resist movement.
Light weight Durable Accurate and Precise
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Current designs on market
Gorilla Pod Too much flexibility when rigid
Locking arm for organ manipulator (patent US 6,730,020 B2)
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Cost benefit
Nurse - $30/hour = $30/one hour surgery 150 surgeries/year = $4,500 nurses salary OR room = $1500/hour
Trying to cut procedure time down
Approximate arm cost goal ≤ $1000
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Design Solution
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Current Work Built prototype flex arm Working on alternate handle design solution Testing the first flex arm design to determine
force necessary to maintain rigidity in flex arm Assessing issues with current design
Integrating a dial to apply tension vs. spring mechanism
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Flex arm in rigid position
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Testing tension
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Future Work
Construct prototype handle Machine shop Need to measure force required to move the
rigid arm out of position while under tension Build mounting base for the arm to attach to the
handle Work with mentor to get funding Reinforce testing apparatus Remodel links
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Gantt Chart
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References
"M-TRAC Mechanical Holding Arm." AESCULAP. Braun. Web. 2 Dec. 2010. <http://www.aesculapusa.com/default.aspx?pageid=910>.
Bowens, C., R. K. Gupta, W. Y. O'Bryne, J. S. Schildcrout, Y. Shi, J. J. Hawkins, D. R. Michaels, and J. M. Berry. "Selective Local Anesthetic Placement Using Ultrasound Guidance and Neurostimulation for Infraclavicular Brachial Plexus Block." Anesth Analg. 5th ser. 1.110 (2010): 1480-485.
Gupta, Rajnish. "Utilizing a Heads up Display (HUD) Unit Can Improve Hand-eye Coordination When Performing Ultrasound Guided Regional Anesthesia." Reg Anesth Pain Med 88 (2010).
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Questions?