slide1
Download
Skip this Video
Download Presentation
Outline

Loading in 2 Seconds...

play fullscreen
1 / 26

Outline - PowerPoint PPT Presentation


  • 115 Views
  • Uploaded on

Support Device for the iSCAN Anna DiRienzo Katelyn Lesk Amber Loree Jude Menie Daniel McChesney, MD April 13, 2007. Outline. Background Methods/Materials Conceptual designs Testing Methods Results Discussion Future Directions. Background on ICP measurement. ICP (intracranial pressure)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Outline' - bert-chandler


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Support Device for the iSCANAnna DiRienzoKatelyn LeskAmber LoreeJude MenieDaniel McChesney, MDApril 13, 2007

outline
Outline
  • Background
  • Methods/Materials
    • Conceptual designs
  • Testing Methods
  • Results
  • Discussion
  • Future Directions
background on icp measurement
Background on ICP measurement
  • ICP (intracranial pressure)
    • Key indicator for various neurological diseases and trauma
    • Traditional measurements
    • Noninvasive measurements
background of the iscan
Background of the iSCAN
  • Function
    • Applies pressure to the exterior of the eye
    • Images the central retinal vein (CRV)
    • Relates changes in the CRV to intraocular pressure
  • Necessity
  • Other uses
  • Regulation: Class II device; de novo – 510(k)
background cont
Background cont.
  • Parts: Lens, means to monitor applied pressure, visualization screen, control pad
  • Advantages: Noninvasive, single handheld unit
  • Disadvantages: Sterilization, difficult positioning, hard to stabilize, high risk of patient injury
necessity of support system
Necessity of Support System
  • Increases stability of iSCAN and ease of use in an emergency room setting
  • Prevents excessive applied pressure
  • Reduces risk of iSCAN dropping onto patient
client requirements
Client Requirements
  • Support a weight analog of the iSCAN (approx. 4 pounds)
  • Mobile
  • Sterilizable
  • Compact and easy to store
  • Stable within its expected range of motion
  • Large and small adjustment
initial designs
iSCANInitial Designs
  • Design 1: Pivoting support system
initial designs cont
iSCANInitial Designs cont.
  • Design 2: Over the hospital bed iSCAN support
initial designs cont1
Initial Designs cont.
  • Design 3: Hospital cart as base of the support system
current prototype
Current Prototype
  • Conceptual design
    • IV pole
    • Universal clamp with IV handle attachment
    • 90 degree L-plate
    • Flexible gooseneck
methods of testing
Methods of Testing
  • Stabilization
  • Sterilization
  • Strength
  • Positioning
stabilization
Stabilization
  • Pressure was applied to places that will most commonly come into contact with unintended forces
    • Gooseneck and IV pole
  • Times were recorded until the area of the attachment to the end of the gooseneck stopped vibrating
    • Four trials for four different people
results stabilization
Results: Stabilization
  • Average vibration time with 5 lb load:
    • Striking gooseneck: 2.1 seconds
    • Striking IV pole: 2.1 seconds
  • Average vibration time without 5 lb load:
    • Striking gooseneck: 3.6 seconds
    • Striking IV pole: 3.3 seconds
sterilization
Sterilization
  • EtOH was applied to each novel surface of the support system once a day for one week
results sterilization
Results: Sterilization
  • Visually inspected everyday for one week with EtOH
    • No deterioration observed
strength
Strength
  • Added weights in 2.5 lbs increments until unstable
  • Each weight increment was held stable for 5 minutes
  • Failure in this test was defined as instability at a time less than 5 minutes
strength cont
Strength cont.
  • Two positions were tested:

Maximum

Normal

results strength
Results: Strength
  • Normal position
    • A weight of 7.5 lbs was held for 5 minutes
    • No additional weight was tested
  • Maximum position
    • A weight of 2.5 lbs was held for 5 minutes
    • A weight of 5 lbs was tested but was taken off after instability was observed (1.5 inch drop in gooseneck position)
positioning
Positioning
  • Range of motion was determined in the following directions:
    • Lateral
    • Vertical
    • Distance from IV Pole
      • Normal vs. Maximum gooseneck
results positioning
Results: Positioning
  • Lateral
    • 16.5 inch range if base is immobilized
  • Vertical
    • Maximum height of 55 inches
  • Distance from IV Pole
    • Normal gooseneck - 19.5 inches
    • Maximum gooseneck - 22 inches
milestones
Milestones

Sept

Oct

Nov

Dec

Jan

Feb

Mar

Apr

Project Ideas

Conceptual Designs

#2

#1

#3

Parts Ordered

Prototype Building

Prototype Redesign

Parts Ordered

Testing

All parts of this project were contributed to equally by all members of this group

discussion
Discussion
  • Supported more than twice the weight analog of the redesigned iSCAN
  • Mobile, accomplished by six swivel wheels on IV pole base
  • Sterilizable - using EtOH
  • Compact and easy to store
  • Mechanically stable within its expected range of motion
  • Large adjustment
future direction
Future Direction
  • Vertical Tracking System
  • Locking Wheels
  • Animal Testing
acknowledgments
Acknowledgments
  • Neurolife - Noninvasive Neurosurgical Solutions
    • Daniel McChesney, MD
  • Optomation
    • Nobuhiko “Poohsan” Tamura, Ph.D
  • Financial Support
    • Drs. Hal Wrigley and Linda Baker
    • Department of Bioengineering
ad