US3645266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removing foreign bodies from the cornea of the eye
Assignee: Individual
•
Filing: 1969-12-29
•
Granted: 1972-02-29
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Expires: 1989-12-29
Abstract
Abstract Foreign bodies are removed from the cornea of the eye by natural corneal movement relative to a special contact lens placed in contact therewith. The eye is anesthetized before the contact lens is applied. The lens is provided with one or more openings in its central portion contacting the corneal epithelium so as to form cutting edges along which the epithelium embedding the foreign bodies, is dissected.
Inventors
- 👤 Loran B Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:59
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00709
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A device adapted to be placed in contact with the eyeball for removal of foreign bodies from the corneal epithelium, comprising a lenslike element including a corneal portion conforming to the curvature of the cornea and a scleral flange portion for retaining the element on the eyeball, said corneal portion having a contact surface and a conical opening converging toward the contact surface to form a cutting edge of effective linear dimension and to permit expulsion of matter dissected from the epithelium by relative movement between the cutting edge and the eyeball.
Claim 2
Independent Claim
92 words
A device adapted to be placed in contact with the eyeball for removal of foreign bodies from the corneal epithelium, comprising a lenslike element including a corneal portion conforming to the curvature of the cornea and a scleral flange portion for retaining the element on the eyeball, said corneal portion having a contact surface and a conical opening converging toward the contact surface to form a cutting edge of effective linear dimension and to permit expulsion of matter dissected from the epithelium by relative movement between the cutting edge and the eyeball.
Claim 3
Dependent Claim
78 words
A lenslike element for use in removing a foreign body embedded in the corneal epithelium of the eye by causing relative movement between the eyeball and the element in contact therewith, said element including a corneal contact portion conforming to the curvature of the cornea, and means formed in the corneal contact portion for dissecting and expelling dissected epithelium in which the foreign body is embedded in response to said relative movement between the eyeball and the element.
Claim 4
Dependent Claim
78 words
A lenslike element for use in removing a foreign body embedded in the corneal epithelium of the eye by causing relative movement between the eyeball and the element in contact therewith, said element including a corneal contact portion conforming to the curvature of the cornea, and means formed in the corneal contact portion for dissecting and expelling dissected epithelium in which the foreign body is embedded in response to said relative movement between the eyeball and the element.
Claim 5
Dependent Claim
27 words
The device as defined in claim 2 wherein said dissecting and expelling means comprises a circular cutting edge formed by an opening in the corneal contact portion.
Claim 6
Dependent Claim
31 words
The device as defined in claim 3 wherein the corneal contact portion has an inside contact surface intersected by the opening forming a conical passage permitting discharge of said dissected epithelium.
References Cited (Backward Citations)
FR946877A
Cited
US3507566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |