Polyurethane elastomer for heart assist devices

Details Polyurethane elastomer for heart assist devices Polyurethane elastomer for heart assist devices

1977-11-23

1978-12-26

Welsh, M. J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

3 1, 3 17, 128 1D, 264311, 264328, 528 76, 528 65, C08G 1848

Patent

active

041316045

ABSTRACT:
Rubbery reaction products of an aliphatic organic diisocyanate, a high molecular weight polyether polyol (poly tetra methylene ether glycol), a low molecular weight glycol chain extender and a polyhydic alcohol crossliker such as trimethylol propane. The resulting polymers have improved thromboresistant properties and a long flexural life.
Bladders for heart pumps may be formed from the resulting polymer, and a novel process for forming bladders for heart pumps is disclosed.

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