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Scanning Electron Microscopic Evaluation of the Surfaces of Artificial Hearts |
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| Authors: | Dennis Coleman John Lawson and Willem J. Kolff |
| Affiliation: | Division of Artificial Organs, Department of Surgery, College of Medicine, the Institute for Biomedical Engineering, College of Engineering, University of Utah, Salt Lake City, Utah, 84112. |
| Abstract: | This Report summarizes the surface changes seen in artificial hearts implanted in calves for periods up to four months. Fabrication defects as well as degradation resulting from wear are identified. SEM evaluation of the blood contacting surface as well as the surface of the diaphragm associated with the drive mechanism has revealed potential problems with current heart designs and methods of fabrication. Materials evaluation of implanted hearts is crucial for a clinically useful system to evolve. |
| Keywords: | artificial hearts fabrication defects degradation SEM (Scanning Electron Microscope) blood contacting surface |