Everting (Toposcopic) Catheter for Broad Clinical Application

[+] Author and Article Information
D. R. Shook, S. R. Goldstein

Biomedical Engineering and Instrumentation Branch, Division of Research Services, National Institutes of Health, Bethesda, Md. 20892

J. L. Doppman

Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bethesda, Md. 20892

E. L. Cattau

Gastroenterology Division, Internal Medicine Department, Naval Hospital, Bethesda, Md. 20814

J Biomech Eng 108(2), 168-174 (May 01, 1986) (7 pages) doi:10.1115/1.3138597 History: Received May 07, 1985; Revised January 29, 1986; Online June 12, 2009


The advanced development of the clinical everting (toposcopic) catheter is described. A detailed discussion of the design and outline of the fabrication techniques are followed by a thorough performance evaluation and summary of the first two clinical applications. The everting element is a low-durometer thermoplastic polyurethane elastomer. Surface treatments include the bonding of a hydrophilic polymeric coating, optimized for lubricity, to the sliding internal surfaces of the catheter. Eversion pressures and infusion/aspiration flow rates have been measured under various conditions and the infusate-in-blood mixing potential investigated. A preliminary assessment is given of the clinical performance of the catheter in the vascular delivery of chemotherapy and standard endoscopic retrograde cholangiopancreatography.

Copyright © 1986 by ASME
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