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Device and method for manual retinal vein catheterization

  • US 7,217,263 B2
  • Filed: 01/03/2001
  • Issued: 05/15/2007
  • Est. Priority Date: 01/03/2000
  • Status: Expired due to Term
First Claim
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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 μ

    m.

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