Development of a Flexible Cryo-Instrument for Gastrointestinal Endoscopy

  • Lester Jay Lifton
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 31)


Recent advance in therapeutic gastrointestinal endoscopy and cryosurgical techniques have caused an interest in creating a cryo-instrument for endoscopic use. The development of a prototype instrument for use in both upper gastrointestinal endoscopy and colonoscopy is described. This instrument is based on the expansion of high pressure carbon dioxide in a series of flexible tubes designed to fit through a 2.6 mm endoscopic accessory channel. This self-enclosed system has been used clinically for cryo-extraction of cauterized colonic polyps. Its potential use for treatment of gastrointestinal malignancies is discussed.


Gastrointestinal Endoscopy Accessory Channel Outer Tube Gastrointestinal Malignancy Ethylene Propylene 
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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • Lester Jay Lifton
    • 1
  1. 1.Camp HillUSA

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