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Selection of materials for ventricular assist pump development and fabrication
Transactions - American Society for Artificial Internal Organs
|January 1, 1977
Summary
Researchers identified Biomer and Tecoflex HR as the top bladder materials after rigorous testing. These advanced biomaterials show exceptional durability in endurance tests, with Biomer exceeding 150 million flexes.
Area of Science:
- Biomaterials Science
- Polymer Engineering
Background:
- Selection of optimal bladder materials is critical for medical device performance.
- Eight polymers, including urethanes, polyester, and polyolefin rubber, were evaluated.
Purpose of the Study:
- To identify the most promising biomaterials for conventionally flocked bladders.
- To establish acceptance/rejection criteria based on comprehensive material testing.
Main Methods:
- A multi-step test matrix assessed hydrolytic stability, flexure endurance, fabricability, and biocompatibility.
- Hydrolytic stability, flexure endurance, fabricability, tissue compatibility, hemocompatibility, and chronic tissue compatibility were evaluated.
Main Results:
- Biomer and Tecoflex HR were selected as the most suitable bladder materials.
- Tecoflex HR bladders exceeded 50 million flexes, while Biomer bladders surpassed 150 million flexes in endurance tests.
Conclusions:
- Biomer and Tecoflex HR demonstrate superior performance for bladder applications.
- Continued testing is underway to further validate these promising biomaterials.