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Device and method for measuring the diameter of an air passageway

  • US 20040010209A1
  • Filed: 07/15/2002
  • Published: 01/15/2004
  • Est. Priority Date: 07/15/2002
  • Status: Abandoned Application
First Claim
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1. A device for measuring an inside diameter of an air passageway, the device comprising:

  • a flexible catheter having an inflation lumen;

    a fluid dispenser in fluid communication with the inflation lumen and operable to eject a measurable volume of fluid; and

    a balloon member in fluid communication with the inflation lumen and expandable to a transverse dimension adjacent to opposing portions of an interior wall of the air passageway in response to fluid ejected from the fluid dispenser, and having a known relationship between volume and the expandable transverse dimension.

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