Implantation assembly for an iris-expanding device

1. An iris-expanding device injector assembly comprising:

a handle having a first end, a second end, an interior, and a length;

a slider coupled with the handle and configured to slide with respect to the handle;

a cannula coupled with the first end of the handle and having an open end spaced from the first end of the handle, the cannula configured to slide in to and out from a holder containing an iris-expanding device;

a hook connected to the slider, the hook configured to:

extend into the holder in response to sliding the slider in a first direction;

grasp the iris-expanding device contained in the holder, wherein the iris-expanding device is contained in the holder in an expanded configuration; and

pull the iris-expanding device into the open end of the cannula in response to sliding the slider in a second direction,

wherein pulling the iris-expanding device into the open end of the cannula causes the iris-expanding device to transition from the expanded configuration to a collapsed configuration in the cannula.

2. The iris-expanding device injector assembly of claim 1 , wherein the cannula has a top surface and a bottom surface, and wherein the bottom surface of the cannula extends beyond the top surface of the cannula at the open end of the cannula.

3. The iris-expanding device injector assembly of claim 1 , wherein the handle further comprises a top end and a bottom end, and wherein the top end comprises a groove configured to receive the slider.

4. The iris-expanding device injector assembly of claim 1 , wherein the handle further comprises a first alignment pin extending from the handle in a first direction outward from the length of the cannula.

5. The iris-expanding device injector assembly of claim 4 , wherein the handle further comprises a second alignment pin extending from the handle in a second direction outward from the length of the cannula.

6. The iris-expanding device injector assembly of claim 1 , wherein the handle further comprises a track disposed within the interior of the handle, and wherein the slider is configured to slide along the track.

7. The iris-expanding device injector assembly of claim 1 , wherein, when the iris-expanding device is in the collapsed configuration within the cannula, moving the slider in the first direction causes the hook to extend past the open end of the cannula, thereby ejecting the iris-expanding device into the expanded configuration outside of the cannula.

8. The iris-expanding device injector assembly of claim 1 , wherein the first end of the handle has a tapered shape configured to couple with the holder.

9. An iris-expanding ring injector comprising:

a handle having a distal end, a proximal end, an interior;

a button coupled to the handle and configured to move between a first position and a second position;

a cannula having:

a proximal end coupled to the distal end of the handle, and

an open distal end;

a hook housed within the cannula when the button is in the first position,

wherein, when the button is moved to the second position, the hook extends past the open distal end of the cannula, and is configured to grasp an iris-expanding ring in an expanded configuration, and

wherein, when the button is moved to the first position, the iris-expanding ring grasped by the hook is transitioned from the expanded configuration into a collapsed configuration in the cannula.

10. The iris-expanding ring injector of claim 9 , wherein the handle comprises a track disposed within the interior of the handle, and wherein the button is configured to slide along the track between the first position and the second position.

11. The iris-expanding ring injector of claim 9 , wherein the handle further comprises a top end and a bottom end, and wherein the top end of the handle includes a groove configured to guide the button between the first position and the second position.

12. The iris-expanding ring injector of claim 9 , wherein the open distal end of the cannula comprises a top surface and a bottom surface, and wherein the bottom surface of the cannula extends beyond the top surface of the cannula at the open distal end of the cannula.

13. The iris-expanding ring injector of claim 9 , wherein, when the iris-expanding ring is in the collapsed configuration within the cannula, moving the button from the first position to the second position causes the hook to extend toward the open distal end of the cannula, thereby ejecting the iris-expanding ring from the cannula into the expanded configuration.

14. An iris-expanding device injector assembly comprising:

a handle having a distal end, a proximal end, an interior, and a length;

a slider configured to move between the distal end and the proximal end of the handle;

a cannula having:

a proximal end coupled to the distal end of the handle, and

an open distal end;

an arm having a contacting end that contacts an iris-expanding device, wherein the arm and the contacting end are housed within the cannula when the slider is in a first position towards the proximal end of the handle,

wherein, when the arm and the contacting end are housed within the cannula, the iris-expanding device is in a collapsed configuration in the cannula, and

wherein, when the slider is moved to a second position towards the distal end of the handle, the contacting end of the arm extends beyond the open distal end of the cannula and transfers the iris-expanding device in the collapsed configuration beyond the open distal end of the cannula into an expanded configuration.

15. The iris-expanding device injector of claim 14 , wherein the interior of the handle comprises a track, and wherein the track is configured to guide the slider.

16. The iris-expanding device injector of claim 14 , wherein the handle further comprises a top end and a bottom end, wherein the top end of the handle includes a groove configured to guide the slider between the distal end and the proximal end of the handle.

17. The iris-expanding device injector of claim 14 , wherein the open distal end of the cannula comprises a top surface and a bottom surface, and wherein the bottom surface of the open distal end of the cannula extends beyond the top surface of the open distal end of the cannula.

18. The iris-expanding device injector assembly of claim 14 , wherein the handle further comprises a first alignment pin extending from the handle in a first direction outward from the length of the cannula.

19. The iris-expanding device injector assembly of claim 18 , wherein the handle further comprises a second alignment pin extending from the handle in a second direction outward from the length of the cannula.

20. The iris-expanding device injector assembly of claim 14 , wherein the contacting end of the arm that contacts the iris-expanding device comprises a grasping end that grasps the iris-expanding device.