US3929124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opthalmodynamometer
Assignee: United States Department of the Navy
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Filing: 1974-05-01
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Granted: 1975-12-30
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Expires: 1994-05-01
Abstract
Abstract An opthalmodynamometer includes an inflated toroid member attached to an eye speculum having a viewing port. The eye of the toroid and the viewing port are axially aligned to permit the fundus of the eye to be illuminated and viewed. Pressure applied to the toroid member is transmitted to the eyeball to thereby raise intra-ocular pressure. Internal toroid member pressure is related to retinal artery blood pressure. Means are provided to ascertain the toroid member pressure so that retinal artery blood pressure may be determined.
Inventors
- 👤 Michael E Yablonski
- 👤 John Nichparenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:44
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/02216; A61B5/24; A61B5/316; A61B5/398
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
48 words
An ophthalmodynamometer comprising: a speculum member provided with a viewing port; a pressurized toroidal bladder attached to said speculum member with the eye of the toroidal bladder coaxial with said speculum viewing port; and means operatively connected to said bladder for determining the internal pressure of said bladder.
Claim 2
Dependent Claim
48 words
An ophthalmodynamometer comprising: a speculum member provided with a viewing port; a pressurized toroidal bladder attached to said speculum member with the eye of the toroidal bladder coaxial with said speculum viewing port; and means operatively connected to said bladder for determining the internal pressure of said bladder.
Claim 3
Dependent Claim
39 words
An ophthalmodynamometer according to claim 1 wherein: said bladder is substantially composed of an impermeable distensible material; and the diameter of the eye of said bladder is equal to or greater than the diameter of the speculum viewing port.
Claim 4
Dependent Claim
40 words
An ophthalmodynamometer according to claim 1 wherein said pressure determining means includes: a pneumatic tube member operatively connected to the bladder; and a pressure indicator means connected to said pneumatic tube member for indicating the internal pressure of said bladder.
Claim 5
Dependent Claim
23 words
An ophthalmodynamometer according to claim 1 further including: force applicator means attached to said bladder for applying an external force to said bladder.
Claim 6
Dependent Claim
25 words
An ophthalmodynamometer according to claim 4 wherein said force applicator means comprises: a ring attached to said bladder and having a curved stem depending therefrom.
Claim 7
Dependent Claim
78 words
An ophthalmodynamometer comprising: a speculum having an opening formed by two oppositely flaring annular surfaces, one of said surfaces being formed to fit against the sclera of the eye beneath the upper and lower eyelids; and a pressurized bladder attached to the outer periphery of the other of said surfaces, said bladder defining an opening therethrough that is coaxial with said speculum opening; and means operatively connected to said bladder for dEtermining the internal pressure of said bladder.
Claim 8
Dependent Claim
78 words
An ophthalmodynamometer comprising: a speculum having an opening formed by two oppositely flaring annular surfaces, one of said surfaces being formed to fit against the sclera of the eye beneath the upper and lower eyelids; and a pressurized bladder attached to the outer periphery of the other of said surfaces, said bladder defining an opening therethrough that is coaxial with said speculum opening; and means operatively connected to said bladder for dEtermining the internal pressure of said bladder.
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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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |