US4453546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scleral depressor
Assignee: United States Department of the Army
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Filing: 1982-09-27
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Granted: 1984-06-12
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Expires: 2002-09-27
Abstract
Abstract An ophthalmic instrument for controlling eye position comprising a substantially oblong shaped blade that has a textured surface and that is formed with a hole substantially in the middle of the blade. In operation, the blade is manipulated by the operator to depress against the sclera of a patient's eye for either rotating or immobilizing the globe of the eye during examination. The instrument further comprises a handle, with optional pocket clip, which is attached to the blade at an offset angle to facilitate manipulation of the blade from a position that leaves the field substantially clear for the simultaneous use of other instruments, such as an opthalmoscope.
Inventors
- 👤 Norman N. K. Katz
- 👤 Vincent A. Przybyla, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:49
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61B; A61B17/00; A61B17/02; A61B17/0231
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
75 words
A scleral depressor for controlling eye position comprising: a planar blade with a textured, non-smooth, uneven, pimply, roughened surface, formed with a hole and having a handle means adapted for pressing said surface against only the sclera of said eye to control eye position, and said handle means having an axis lying substantially in the plane of said blade, attached to said blade and angled therefrom at an angle between 145 degrees and 175 degrees.
Claim 2
Dependent Claim
75 words
A scleral depressor for controlling eye position comprising: a planar blade with a textured, non-smooth, uneven, pimply, roughened surface, formed with a hole and having a handle means adapted for pressing said surface against only the sclera of said eye to control eye position, and said handle means having an axis lying substantially in the plane of said blade, attached to said blade and angled therefrom at an angle between 145 degrees and 175 degrees.
Claim 3
Dependent Claim
13 words
A depressor as cited in claim 1 wherein said blade is oblong shaped.
Claim 4
Dependent Claim
85 words
A scleral depressor for controlling eye position comprising: a planar blade with a textured, non-smooth, uneven, pimply, roughened surface, formed with a hole and having a handle means adapted for pressing said surface against only the sclera of said eye for controlling eye position, said handle means rigidly attached to said blade and angled therefrom at an angle between 145 degrees and 170 degrees, and a pocket clip attached to said handle, said blade, said handle and said clip lying in substantially the same plane.
Claim 5
Dependent Claim
85 words
A scleral depressor for controlling eye position comprising: a planar blade with a textured, non-smooth, uneven, pimply, roughened surface, formed with a hole and having a handle means adapted for pressing said surface against only the sclera of said eye for controlling eye position, said handle means rigidly attached to said blade and angled therefrom at an angle between 145 degrees and 170 degrees, and a pocket clip attached to said handle, said blade, said handle and said clip lying in substantially the same plane.
Claim 6
Dependent Claim
13 words
A depressor as cited in claim 3 wherein said blade is oblong shaped.
Claim 7
Dependent Claim
13 words
A depressor as cited in claim 3 wherein said blade is teardrop shaped.
Claim 8
Dependent Claim
37 words
A depressor as cited in claim 3 wherein said blade is circular shaped and adapted for pressing against only the sclera of said eye, the area of said hole being larger than the pupil of said eye.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |