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Contact lens insertion and retraction device
| Details |
Inventors: Shoup, Leo E.;
Assignee:
Primary Examiner: Cherry; Johnny D.
Assistant Examiner:
Attorney, Agent or Firm: Weiss; Harry Max
This disclosure relates to a contact lens insertion and retraction device which is especially useful for either inserting or retracting a soft contact lens, onto or from the surface of a person's eye. This device utilizes a flexible bulb member, in cooperative combination with an attached tubular-shaped member, for supplying negative (suction) or positive (exhaust) pressure on a contact lens holder portion that is attached to the open or other end of the tubular-shaped member and thereby connected to the flexible bulb member. During the operation of removing the contact lens from the eye, a negative pressure or suction is applied to the contact lens from the contact lens holder portion by squeezing the flexible bulb member. The flexible bulb member also supplies an exhaust pressure on the contact lens by means of inserting the contact lens onto the eye. The contact lens holder portion is removable for asepticizing. Additional features include angling the contact lens holder portion with its attached tubular-shaped member at a preferred angle to permit, through use of a mirror, good visual observation of the insertion and extraction operations. A circular-shaped cavity with a diagonal blocking member is utilized at the end of the contact lens holder portion for optimizing the application of suction and exhaust pressures from the flexible bulb portion to the back portion of the contact lens during the insertion and extraction operations. |
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DETAILED DESCRIPTION What is claimed is: 1.
A soft contact lens insertion and retraction device comprising, in combination, a flexible bulb member, a thin, angled, connecting tubular member having one end connected to said flexible bulb member, a soft contact lens holder portion connected to the other end of said connecting tubular member, said soft contact lens holder portion having a cup-shaped member located at one end thereof, said cup-shaped member having a semi-circular shaped cavity, and concave blocking means extending across said semi-circular shaped cavity for preventing a soft contact lens from being sucked down in the direction of said flexible bulb member, said concave blocking means comprising a diagonally extending concave blocking member having a relatively large opening on each side thereof for permitting maximum flow of air pressure.
2.
A soft contact lens insertion and retraction device in accordance with claim 1 wherein said angled connecting tubular member has an angled portion at an angle of between 45.
degree.
and 90.
degree.
with respect to the portion of said connecting tubular member connected to said flexible bulb member.
3.
A soft contact lens insertion and retraction device in accordance with claim 2 wherein said angled portion extends at an angle of about 75.
degree.
with respect to the portion of said connecting tubular member connected to said flexible bulb member.
4.
A soft contact lens insertion and retraction device in accordance with claim 3 wherein said soft contact lens holder portion is removably connected to the angled portion of said connecting tubular member.
Description:
BACKGROUND OF THE INVENTION 1.
Field of the Invention This invention generally relates to contact lens insertion and extraction devices and, more particularly, relates to contact lens insertion and extraction devices especially useful for soft contact lenses.
2.
Description of the Prior Art In the past, several prior art devices have been disclosed for the purpose of inserting and/or removing a contact lens
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