Patent ID: 7217263
Filing Date: 2007-05-15
Classification: A61B,A61F,A61M

Abstract:
1. A microcatheter system for infusion of a solution into a retinal vein, wherein the microcatheter system remains within the retinal vein during the infusion without an external holding device for at least a period of time required for a bolus injection, comprising: a flexible cannula mounted in a second cannula, at least a portion of the second cannula, configured to be disposed within the eve when the microcatheter system is placed within the eye for infusion into a retinal vein, at least a portion of the flexible cannula, configured to be disposed within the retinal vein when the microcatheter system is placed within the eye for infusion into a retinal vein, wherein the flexible cannula and the second cannula form an infusion fluid path and wherein the flexible cannula has an outer diameter less than about 100 μm.