Non-thrombogenic intravascular time release catheter
AssigneeLuther Medical Products, Inc.
InventorsRonald B. Luther, Edward Shanbrom
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Abstract
An intravascular catheter comprising a cannula for insertion into a vascular system of a patient coated with hydrophilic polymer containing, in the polymer, an effective amount of polymyxin to prevent the growth of microorganisms is disclosed.
Claims1
An invasive device comprising a structure constructed and dimensioned for insertion into a patient for residing in contact with a fluid in the patient which contains fibrinogen-fibrin capable of forming clots, and a coating on the structure, said coating consisting essentially of three-dimensional polymer formed of polyurethane polyene compositions obtained by reacting from about 10 to about 50 parts by weight of a polyene in the presence of about 100 parts by weight of a hydrophilic polyurethane resin, said coating having absorbed therein an amount of antimicrobial anticoagulant consisting essentially of polymyxin in amount effective to inhibit growth of bacteria and the formation of blood clots on said coating.
Dependencies are inferred from the claim text.