Patent ID: 9050169
Filing Date: 2015-06-09
Classification: A61B,A61F

Abstract:
1. A cannula for an ocular implant delivery system comprising a member having an opening at a distal end and a lumen extending proximally within the member along a longitudinal axis from the opening, the member having a first side and a second side opposite the first side, the member extending further distally on the first side than on the second side to the opening, wherein an opening surface at the distal end of the member surrounds the opening to define a tongue extending proximally from the tip on the first side of the body, wherein the tongue comprises a first region in which circumferential material coverage of the body around the lumen increases from a first point to a second point proximal to the first point, a second region in which circumferential material coverage of the body around the lumen decreases from the second point to a third point proximal to the second point, and a third region in which circumferential material coverage of the body around the lumen increases from the third point to a fourth point proximal to the third point, the member comprising: a distal tip; a curved portion disposed proximal to the distal tip, the longitudinal axis through the curved portion defining a curve plane, the second side of the member being disposed radially inward of the first side of the member in the curved portion; a straight portion proximal to the curved portion; the distal tip being adapted to be inserted into an anterior chamber of a human subject's eye, through trabecular meshwork and into Schlemm's canal of the eye, the proximal portion of the member being adapted to extend from a location exterior to the eye when the distal tip is in Schlemm's canal of the eye, the cannula being further adapted to cooperate with an advancement mechanism to advance an ocular implant through the tubular member toward and through the opening into Schlemm's canal of the eye when the distal tip is disposed in Schlemm's canal, the curved portion of the member having a curve adapted to achieve substantially tangential entry of the ocular implant into Schlemm's canal.