PROVISION OF VASCULAR GRAFTS WITH AN ACTIVE PRINCIPLE
One or more substances of the group consisting of gentamicin palmitate, gentamicin myristate, gentamicin laurate, tobramycin palmitate, tobramycin myristate, tobramycin laurate, amikacin palmitate, amikacin myristate, amikacin laurate, vancomycin palmitate, vancomycin laurate, and vancomycin myristate are suitable for providing vascular grafts with an antithrombogenically active principle. The appropriate method for providing vascular grafts with an antithrombogenically active principle particularly comprises the following steps of A immersing the graft body in an alcoholic solution or an alcoholic solution with a readily volatile solvent, such as chloroform, wherein the alcoholic solution is of a member of the group consisting of gentamicin palmitate, gentamicin myristate, gentamicin laurate, tobramycin palmitate, tobramycin myristate, tobramycin laurate, amikacin palmitate, amikacin myristate, amikacin laurate, vancomycin palmitate, and vancomycin myristate, or of spraying said solution on said graft body, and of B vaporizing said alcoholic solvent.
1 . A method for providing a vascular graft with an active principle, said method comprising the following steps:
A immersing a graft body in an alcoholic solution or an alcoholic solution with a volatile solvent, wherein the alcoholic solution is of a member of the group consisting of gentamicin palmitate, gentamicin myristate, gentamicin laurate, tobramycin palmitate, tobramycin myristate, tobramycin laurate, amikacin palmitate, amikacin myristate, amikacin laurate, vancomycin palmitate, and vancomycin myristate, or
spaying said graft body with said solution, and
B vaporizing said alcoholic solvent,
wherein the active principle is antithrombogenic.
2 . The method according to claim 1 , wherein the solution of step A has suspended therein:
a synthetic or natural blood coagulation and/or platelet aggregation inhibitor or
an open-chain or cyclic DNA or RNA or a synthetic DNA analog and/or one or more adducts built from open-chain or cyclic DNA or RNA or synthetic DNA analogs and one or more cationic antibiotics.
3 . A coated vascular graft produced according to a method according to claim 1 , wherein a further medicinal substance is dispersed or suspended in the coating.
4 . The coated vascular graft according to claim 3 , wherein the medicinal substance is contained in the coating in a molecularly dispersed manner.
5 . The coated vascular graft according to claim 3 , wherein the antithromogenic substance is at least one member of the group consisting of argatroban, heparin and synthetically obtained polysaccharide sulfates.
6 . The coated vascular graft according to claim 3 , wherein the coating contains open-chain or cyclic DNA or RNA or the synthetic analogs thereof encoding growth factors or angiogenesis factors.
7 . The coated vascular graft according to claim 3 , wherein the thickness of the coating ranges from 0.1 μm to 200 μm.
8 . The coated vascular graft according to claim 3 , wherein the graft body consists of porous PTFE or polyester.
9 . The coated vascular graft according to claim 8 , wherein the coating does not close any graft pore systems completely.
10 . A method of treating a vascular defect in a patient in need of such treatment, said method comprising implanting a vascular graft according to claim 3 into a vein of said patient.