Apparatus for delivery of ocular implants
First Claim
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1. An apparatus for implanting an ocular implant into the vitreous of a patient'"'"'s eye, comprising:
- an elongate housing having a longitudinal axis;
a cannula extending longitudinally from the housing, the cannula having a lumen extending therethrough;
a plunger rod received within the cannula lumen and in engagement with the implant, the plunger rob being moveable from a first to second position; and
a linkage having a moveable end connected to the plunger rod, and a fixed end secured to the housing, an actuating lever having a first end pivotally mounted within the housing, and a second end in engagement with the linkage, a removable tab with a pin interposed to prevent movement of the moveable end of the linkage, and a cap for placement over a forward end of the housing, wherein, upon removable of the tab, movement of the second end of the actuating lever against the linkage in a direction normal to the housing axis causes translational movement of the moveable end of the linkage from a first to second position parallel to the housing axis, thereby moving the plunger rod from the first to the second position and ejecting the implant from the cannula.
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Abstract
An apparatus and methods for delivering ocular implants or microimplants. The apparatus is ergonomically designed for ease of use, and a simple manual depression of an actuator produces proportional movement of a linkage causing the implant or microimplant to be ejected through a cannula disposed at the desired location in the eye. Small gauge cannulas are provided for self-sealing methods of delivery.
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Citations
7 Claims
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1. An apparatus for implanting an ocular implant into the vitreous of a patient'"'"'s eye, comprising:
- an elongate housing having a longitudinal axis;
a cannula extending longitudinally from the housing, the cannula having a lumen extending therethrough;
a plunger rod received within the cannula lumen and in engagement with the implant, the plunger rob being moveable from a first to second position; and
a linkage having a moveable end connected to the plunger rod, and a fixed end secured to the housing, an actuating lever having a first end pivotally mounted within the housing, and a second end in engagement with the linkage, a removable tab with a pin interposed to prevent movement of the moveable end of the linkage, and a cap for placement over a forward end of the housing, wherein, upon removable of the tab, movement of the second end of the actuating lever against the linkage in a direction normal to the housing axis causes translational movement of the moveable end of the linkage from a first to second position parallel to the housing axis, thereby moving the plunger rod from the first to the second position and ejecting the implant from the cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- an elongate housing having a longitudinal axis;
Specification