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Details for Patent: 7,753,916

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Details for Patent: 7,753,916

Title:Methods and apparatus for delivery of ocular implants
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.
Inventor(s): Weber; David A. (Danville, CA), Kane; Ingrid (Los Altos, CA), Rehal; Mike (Boulder Creek, CA), Lathrop; Robert L. (Santa Clara, CA), Aptekarev; Kenny (Santa Cruz, CA), Etter; Jeffrey (Hayward, CA)
Assignee:
Filing Date:Jun 26, 2006
Application Number:11/475,268
Claims:1. An apparatus for implanting an ocular implant at a location in 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 and being configured to receive an ocular implant within the cannula lumen; a push rod disposed within the cannula lumen and configured to move, along the longitudinal axis of the housing, from a first position to second position; and a linkage having a moveable end connected to the push rod, and a fixed end secured to the housing, the linkage configured to translate a force applied to the linkage normal to the longitudinal axis of the housing into a force applied to the push rod along the longitudinal axis of the housing, moving the push rod from the first position to the second position.

2. The apparatus of claim 1 wherein the moveable end of the linkage is configured to move along the housing axis.

3. The apparatus of claim 1 further comprising an ocular implant located within the lumen cannula.

4. The apparatus of claim 3 wherein said implant is a microimplant.

5. The apparatus of claim 3 wherein said implant is biodegradable.

6. The apparatus of claim 1 further comprising an actuating lever engageable with said linkage.

7. The apparatus of claim 6 wherein the actuating lever is pivotally mounted within said housing.

8. The apparatus of claim 6 wherein said actuating lever further includes a button extending from the housing for manual depression of the lever.

9. The apparatus of claim 1 wherein said linkage further comprises a plurality of flexibly joined segments.

10. The apparatus of claim 1 wherein the cannula has an outer diameter of approximately 0.032 inches or less.

11. The apparatus of claim 1 wherein the cannula has an outer diameter of approximately 0.028 inches or less.

12. The apparatus of claim 1 wherein the cannula has a cross-sectional area of approximately 0.0008 square inches or less.

13. An apparatus for implanting an ocular implant at a location in 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 push rod disposed within the cannula lumen and configured to engage with an ocular implant, the plunger push rod configured to move, along the longitudinal axis of the housing, from a first to second position; a linkage having a moveable end connected to the push rod, and a fixed end secured to the housing, the linkage configured to translate a force applied to the linkage normal to the longitudinal axis of the housing into a force applied to the push rod along the longitudinal axis of the housing, moving the push rod from the first position to the second position; and an actuating lever having a first end pivotally mounted within the housing, and a second end in engagement with the linkage, the actuating lever configured to apply the force to the linkage normal to the longitudinal axis of the housing causing the linkage to move the push rod from the first to the second position ejecting the implant from the cannula.

14. The apparatus of claim 13 further comprising an ocular implant located within the lumen cannula.

15. The apparatus of claim 14 wherein said implant is a microimplant.

16. The apparatus of claim 13 wherein said actuating lever further comprises a button extending from the housing for manual depression of the lever.

17. The apparatus of claim 13 wherein the cannula has an outer diameter of 0.032 inches or less.

18. The apparatus of claim 13 wherein the cannula has an outer diameter of approximately 0.028 inches or less.

19. The apparatus of claim 13 wherein the cannula lumen has a cross-sectional area of 0.0008 square inches or less.
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