SummaryThe development of materials and technology suitable for the fabrication of intra-aortic balloons (IABs) is described; a brief discussion of materials and a fabrication process for flexible ventricular assist devices (heart massage cups) is also given. A series of block copolyether-urethanes was developed, the mechanical properties of which can be varied over a wide range. One member of the series was "tailored" specifically for nondistensible IABs of a particular design. Several of the block copolyeth…
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