1 / 13

Esophageal Strictures

Esophageal Strictures. William Stanford – Leader & BSAC Daniel Frost – BWIG Thomas Fleming – Communicator Client: Dr. Mark Reichelderfer, MD Advisor: Professor John Webster. Presentation Outline. Problem Statement Background Information Current Methods Design Constraints

enid
Télécharger la présentation

Esophageal Strictures

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Esophageal Strictures William Stanford – Leader & BSAC Daniel Frost – BWIG Thomas Fleming – Communicator Client: Dr. Mark Reichelderfer, MD Advisor: Professor John Webster

  2. Presentation Outline • Problem Statement • Background Information • Current Methods • Design Constraints • Possible Designs • Future Work

  3. Background Information • Esophageal Stricture • Stomach acid reflux into esophagus forms stricture • Also from cancer, lung problems, and genetics • Causes heartburn • Treatment • Surgery and dilation • Surgery is complicated and risky • Dilation is more safe • Inflatable balloon inside the esophagus

  4. Background Information • Stricture Size and Compliance • Compliance = Volume/Pressure • Little work has been done involving compliance • Compliance gives information about scar tissue • Can lead to better treatment options • Potential correlation between stricture types

  5. Problem Statement • Device should: • Measure pressure in balloon • Measure change in volume of syringe • Graph volume/pressure curve in real time • Be aesthetically pleasing for hospital setting • Eventually be commercially available

  6. Design Constraints • Work with current dilation procedure • Provide real time data • Provide warning of esophageal perforation • Software that runs on hospital computers • Compliance accurate to three significant figures • Compact enough for hospital setting • Safety

  7. Current Prototype • Syringe is filled with saline • Pressure measured with pressure transducer • Volume measured with linear potentiometer • Outputs are connected to an amplifier circuit • Circuit connects to computer

  8. Design 1: LabView • Advantages: • Real time graphing • Reads two inputs • Automatically converts units • Simple inputs • Image oriented programming • Disadvantages: • Complicated • Time consuming to learn • Relatively expensive

  9. Design 2: BioBench • Advantages: • No programming required • Has a playback mode • Multiple inputs • Less expensive • Disadvantages: • No real time graphing • No automatic unit conversion • Data has to be exported in Microsoft Excel

  10. Design 3: Pasco • Advantages: • Real time graphing • Data can be entered into equations • Easy to use • Two inputs • Least expensive • Disadvantages: • No support for saline pressure sensor

  11. Design Matrix

  12. Future Work • Write software program for graphing • Develop amplification circuit • Testing • Aesthetic finalization • Gain IRB approval • Human testing

  13. References • http://sine.ni.com/nips/cds/view/p/lang/en/nid/1454 • http://en.wikipedia.org/wiki/Image:Labview-logo.png • http://www.pasco.com • Hale, A. et. al. (2002). Barostat to Measure Esophageal Strictures. • Kirking, H. et. al. (2002). Barostat to Measure Esophageal Strictures. • Seashore, K. et. al. (2006). Device for Dilating Esophageal Strictures.

More Related