The Osmotic Swelling Characteristics of Cardiac Valve Prostheses
Author:
Bachmann C.1, Wilson M.2, Kini V.1, Deutsch and S.3, Fontaine A. A.3, Tarbell J. M.4
Affiliation:
1. Bioengineering Department, The Pennsylvania State University, University Park, PA 16802 2. Chemical Engineering Department, The Pennsylvania State University, University Park, PA 16802 3. Applied Research Laboratory, The Pennsylvania State University, University Park, PA 16802 4. Chemical Engineering and Bioengineering Departments, The Pennsylvania State University, University Park, PA 16802
Abstract
Several types of mechanical cardiac prostheses have been constructed with Delrin occluders, a material that is subject to osmotic swelling. The leaflets are designed to expand to specific tolerances when immersed in blood. The synthetic blood analogs commonly used in vitro contain hydrophilic compounds that can alter the osmotic expansion of the Delrin occluders. A static leak test chamber was employed to illustrate the effects of various test fluids on the sustained regurgitation phase of Delrin valves. [S0148-0731(00)02104-X]
Publisher
ASME International
Subject
Physiology (medical),Biomedical Engineering
Reference8 articles.
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