Positioning implement for intraocular lens

• US 4,706,666 A
• Filed: 03/03/1987
• Issued: 11/17/1987
• Est. Priority Date: 03/03/1987
• Status: Expired due to Fees

• Current Assignee: John H. Sheets
• Original Assignee: John H. Sheets
• Inventors: Sheets, John H.
• Primary Examiner(s): FRINKS, RONALD
• Application Number:
  US07/021,318
• Time in Patent Office: 259 Days
• Field of Search: 623/6, 623/4, 128/303 R
• US Class Current: 606/107
• CPC Class Codes: A61F 2/1662 Instruments for inserting intraocular lenses into the eye
• CPC Class Codes: A61F 2002/1683 having filiform haptics

Abstract

A positioning implement for an intraocular lens comprises an elongated plate-like handle having an upper surface on which a movable pusher having a tapered forward end is mounted for axial reciprocation. A canted finger extends unitarily forwardly from the handle and also has a tapered forward end. Both tapered forward ends are provided with slots dimensioned to fit over an intraocular lens haptic to permit selective application of force to the haptic of an intraocular lens at two different locations for positioning it in the lens capsule of the eye.

Claims

1. An implement for effecting the positioning in the posterior chamber of the eye of an intraocular lens of the type comprising a lens body and first and second haptics each having one end extending generally tangentially from the lens body and formed of a plurality of end-to-end sections which alternatingly have respective centers of curvature on opposite sides of the haptic so that the edge of each haptic comprises alternating protrusions and depressions, said implement comprising:

an elongated handle having a forward end and a pusher finger extending laterally and forwardly from said forward end and including a first pusher tip on the forward end of said pusher finger dimensioned and shaped as to be drivingly engageable with one of said haptics;

an elongated movable pusher mounted for axial reciprocation on said elongated handle portion and a second pusher tip on a forward-end of said movable pusher; and

wherein said first pusher tip and said second pusher tip are laterally spaced apart a distance approximately equal the distance between two of said protrusions on one of said haptics.

2. The implement of claim 1 wherein said first and second pusher tips each include an inwardly extending haptic retaining slot on their distal ends dimensioned to each respectively fit over one edge of one of said haptics to retain lateral movement of the haptic relative to the respective pusher tip.

3. The implement of claim 2 additionally including guide means on one end of said handle for preventing lateral movement of said elongated movable pusher relative to said handle.

4. The implement of claim 3 wherein said guide means comprises first and second generally L-shaped guide plates.

5. The implement of claim 4 wherein said pusher finger includes a rearward finger portion oriented at an arcuate angle relative to the axis of said handle and a distal finger portion oriented in a plane parallel to the axis of said handle.

6. The implement of claim 5 wherein said handle and said movable pusher both comprise elongated plate-like members.

7. The implement of claim 6 wherein the distal ends of said handle and said pusher taper inwardly toward their distal ends.

8. The implement of claim 7 wherein said haptic retaining slots are generally arcuate in shape as viewed from one end.

9. The implement of claim 1 wherein said handle and said pusher are of generally rectangular transverse cross-section.

10. The implement of claim 9 wherein said first and second pusher tips each include an inwardly extending haptic retaining slot on their distal ends dimensioned to each respectively fit over one edge of one of said haptics to retain lateral movement of the haptic relative to the respective pusher tip.

11. The implement of claim 10 additionally including guide means on one end of said handle for preventing lateral movement of said elongated movable pusher relative to said handle.

12. The implement of claim 11 wherein said guide means comprises first and second generally L-shaped guide plates.

13. The implement of claim 12 wherein said pusher finger includes a rearward finger portion oriented at an acute angle relative to the axis of said handle and a distal finger portion oriented in a plane parallel to the axis of said handle.

14. The implement of claim 13 wherein said handle and said movable pusher both comprise elongated plate-like members.

15. The implement of claim 14 wherein the distal ends of said handle and said pusher taper inwardly toward their distal ends.

16. The implement of claim 15 wherein said haptic retaining slots are generally arcuate in shape as viewed from one end.