Patent US4275733A successfully refreshed from Google Patents.
US4275733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmological surgical instrument
Assignee: Individual
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Filing: 1979-10-22
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Granted: 1981-06-30
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Expires: 1999-10-22
Abstract
Abstract The ophthalmological surgical instrument of the present invention is used for stabilizing a patient's eye to prevent inward collapse during ophthalmic surgery. The instrument generally includes a ring which is adapted to be placed on the surface of the eye surrounding the cornea. A plurality of securing devices are permanently carried by the ring being circumferentially and equally spaced about the ring to temporarily secure the ring to the surface of the eye. With the ring secured to the eye the integrity of the eye will be maintained regardless of any incisions made in the eye or sections which may be removed therefrom.
Inventors
- 👤 Gerald P. Marinoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:25
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/0231; A61F; A61F9/00; A61F9/007
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
161 words
An ophthalmological surgical instrument for stabilizing an eye during ophthalmic surgery comprising, a ring adapted to be placed on the eye surrounding the cornea of the eye, and a plurality of securing devices permanently carried by said ring and circumferentially spaced thereabout for temporarily securing said ring to the surface of said eye so that said ring supports the integrity of the eye regardless of incisions made therein, each securing device includes support means permanently connected to said ring, and a twist fixator carried by said support means for axial movement therethrough to effect temporary fixation of said ring to the surface of the eye, said support means comprising an internally threaded cylinder pivotally connected to said ring, said twist fixator having external threads and thus carried by said threaded cylinder for axial movement therethrough upon rotational movement of said fixator, said external threads of said fixator being non-slip threads to prevent undesired rotational movement of said fixator in said cylinder.
Claim 2
Dependent Claim
161 words
An ophthalmological surgical instrument for stabilizing an eye during ophthalmic surgery comprising, a ring adapted to be placed on the eye surrounding the cornea of the eye, and a plurality of securing devices permanently carried by said ring and circumferentially spaced thereabout for temporarily securing said ring to the surface of said eye so that said ring supports the integrity of the eye regardless of incisions made therein, each securing device includes support means permanently connected to said ring, and a twist fixator carried by said support means for axial movement therethrough to effect temporary fixation of said ring to the surface of the eye, said support means comprising an internally threaded cylinder pivotally connected to said ring, said twist fixator having external threads and thus carried by said threaded cylinder for axial movement therethrough upon rotational movement of said fixator, said external threads of said fixator being non-slip threads to prevent undesired rotational movement of said fixator in said cylinder.
Claim 3
Dependent Claim
18 words
The ophthalmological surgical instrument according to claim 1 wherein said securing devices are equally spaced about said ring.
Claim 4
Dependent Claim
23 words
The ophthalmological surgical instrument according to claim 2 wherein there are four securing devices placed at approximately 90° intervals circumferentially about said ring.
Claim 5
Dependent Claim
55 words
The ophthalmological surgical instrument according to claim 1 wherein said twist fixator carries a pair of prongs axially extending in a curved direction so that upon rotational movement of said fixator within said cylinder said prongs will pierce the surface of the eye when said ring is placed in position on the eye for use.
Claim 6
Dependent Claim
29 words
The ophthalmological surgical instrument according to claim 4 further comprising a slot carried in said fixator for receiving means to effect rotational movement of said fixator within said cylinder.
Claim 7
Dependent Claim
30 words
The ophthalmological surgical instrument according to claim 5 further comprising a sleeve connected to said threaded cylinder extending about said ring for pivotal attachment of said cylinder to said ring.
Claim 8
Dependent Claim
27 words
The ophthalmological surgical instrument according to claim 6 further comprising stop means on the surface of said ring to prevent circumferential movement of said sleeve there along.
References Cited (Backward Citations)
SU303071A1
Cited
FR2354752A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |