Thermoplastic elastomeric hydrophilic polyetherurethane expandab

Details Thermoplastic elastomeric hydrophilic polyetherurethane expandab Thermoplastic elastomeric hydrophilic polyetherurethane expandab

1990-03-26

1991-10-29

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604282, A61M 532

Patent

active

050612549

ABSTRACT:
A melt extruded catheter of thermoplastic elastomeric hydrophilic polyurethane synthesized from a diisocyanate, polyethyleneoxide glycol of high molecular weight and a chain extender expands to a larger lumen size when contacted with an aqueous liquid. The catheter may include an antithrombogenic agent, antiinfective agent and radiopaque agent. The hydrophilic polyurethane may be synthesized by one-shot bulk polymerization, and may be melt extruded into the catheter tubing, and may encapsulate a stripe of a stiffening polyurethane.

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