Handling: hand and hoist-line implements – Contact lens applicator
Patent
1980-04-18
1982-04-27
Marbert, James B.
Handling: hand and hoist-line implements
Contact lens applicator
A61F 900
Patent
active
043267424
ABSTRACT:
The apparatus comprises a frame which is positioned over the eyes in front of the forehead so that a recessed portion of the frame fits over the bridge of the nose. An arm pivoted on the frame to swing selectively from in front of one eye to the other, with adjustable stop means to limit the extent of motion, has a slot in the end to receive an insertion device which comprises a slotted collar removably fitted into the end of the swinging arm and supporting a spring biased shaft having a small cup thereon which temporarily retains the soft contact lens by surface tension and not by suction. The removing device comprises a multi-pronged tweezer having arms of stainless steel tipped with a small ball of latex and the arms expand or retract in response to finger movement.
To insert a soft contact lens, the spring loaded plunger is mounted in the groove of the swinging arm of the centering frame and the soft contact lens is placed on the rubber cup which is wet with a solution. With the centering frame worn like a pair of glasses, the insertion device is precisely centered over the cornea with the soft contact lens in the cup a few mm. from corneal surface, holding the lower eyelid down as far as comfortable the plunger is moved until the soft contact is in contact with the cornea and the plunger is released pulling the cup from the contact lens. To remove the contact lens, the removal device is placed in the slot of the swinging arm of the centering frame, the plunger is depressed so that the prongs open to about 15 mm. in diameter and while holding the prongs open the device is carefully moved toward the eye until the latex covered soft ends touch the cornea. The plunger is released causing the ends to close thereby retracting and grasping the soft contact lens causing it to buckle thereby breaking the surface tension and the lens is removed. There are different forms of the invention.
REFERENCES:
patent: 3697109 (1972-10-01), Parrent
patent: 4126345 (1978-11-01), List
patent: 4193622 (1980-03-01), Overman
Henry Patrick F.
Marbert James B.
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