| 主权项 |
1. An ocular implant comprising an inlet portion and a Schlemm's canal portion distal to the inlet portion, the inlet portion being disposed at a proximal end of the implant and sized and configured to be placed within an anterior chamber of a human eye, the inlet portion having an inlet adapted to be in fluid communication with the anterior chamber, the Schlemm's canal portion having a diameter between 0.005 inches and 0.04 inches, the Schlemm's canal portion comprising:
a central channel in fluid communication with the inlet, the central channel extending longitudinally in the Schlemm's canal portion; a first element disposed along the central channel; a second element disposed along the central channel distal to the first element; a third element disposed along the central channel distal to the first element and proximal to the second; a fourth element disposed along the central channel distal to the second element; the first, second, third and fourth elements each comprising two edges partially defining an elongate opening in fluid communication with the central channel, each of the first, second, third and fourth elements having circumferential extents less than 360 degrees so that the elongate opening extends continuously along the first, second, third and fourth elements, wherein each of the first, second, third, and fourth elements have an arc length, the arc lengths of the circumferential extents of the first and second elements being less than the arc lengths of the circumferential extents of the third and fourth elements; the Schlemm's canal portion being arranged and sized to be disposed within Schlemm's canal of the eye when the inlet portion is disposed in the anterior chamber, such that the entire ocular implant is sized to be implanted within the eye. |
