Thermoplastic elastomeric hydrophilic polyetherurethane...

Details Thermoplastic elastomeric hydrophilic polyetherurethane... Thermoplastic elastomeric hydrophilic polyetherurethane...

C - Chemistry, Metallurgy

08

G

402/152

C08G 18/32 (2006.01) A61L 29/00 (2006.01) A61L 29/06 (2006.01) A61L 29/16 (2006.01) A61L 29/18 (2006.01) A61M 25/00 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01)

Patent

CA 2017952

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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