Pneumatic contact lens insertion device

Details Pneumatic contact lens insertion device Pneumatic contact lens insertion device

1985-03-11

1986-01-21

Marbert, James B.

Handling: hand and hoist-line implements

Contact lens applicator

A61F 900

Patent

active

045653968

ABSTRACT:
An opthalmic insertion device for quick and accurate insertion of contact lenses with minimum handling. A pneumatic insertion device comprises a main cylindrical body having a coil spring driven piston for pumping air fitted into and substantially filling cross sectionally a forward area of the main body cylinder, a hollow shaft axially slidable communicating the area behind the piston to an area within a soft rubber cup on the forward end of the said shaft, a buffer spring to limit the retraction of the hollow shaft into the cylinder, a cocking plunger fitted into and substantially filling cross sectionally a rear portion of the cylinder provides a means to compress the piston drive spring and is provided with a rearward biasing spring to automatically return the said cocking plunger to a rear position of the main body cylinder, a trigger device to hold said piston in the cocked position until a contact lens is ready to be inserted.

REFERENCES:
patent: 4026591 (1977-05-01), Cleaveland
patent: 4093291 (1978-06-01), Schurgin

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