US3835836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compression opthalmodynamometer
Assignee: Individual
•
Filing: 1973-06-21
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Granted: 1974-09-17
•
Expires: 1993-06-21
Abstract
Abstract A compression ophthalmodynamometer for measuring blood pressure in the human eye in conjunction with a mercury manometer is disclosed. The instrument includes a handheld rubber compressor bulb having one-way valves for providing air under pressure, an air-pressure-to-proportional-contact-force transducer, and tubes which simultaneously conduct the air under pressure to both the manometer and the transducer. The manometer gives an indication of the pressure of the air while, simultaneously, the transducer applies a force proportional to the pressure of the air to the surface of the eye through a foot-plate contact with the surface of the eye. One embodiment of the transducer includes a hollow body separated into halves by a diaphragm. An air pressure chamber is defined within the hollow body between one surface of the diaphragm and the portion of the transducer housing which is adjacent the input to the transducer from the bulb. A rod extends between the second surface of the diaphragm and the foot-plate in contact with the eye to convey air pressure created forces from the diaphragm to the foot-plate and thus to the surface of the eye.
Inventors
- 👤 Y Kanter
- 👤 B Nemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:54
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/02216
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
339 words
A compression ophthalmodynamometer for measuring blood pressure in the eye of a human, comprising in combination: a mercury manometer including a hollow graduated scale arranged to accommodate a column of mercury and a reservoir arranged to hold a supply of mercury, the reservoir communicating with the hollow of the graduated scale and having an input arranged to accept air under pressure; transducer apparatus including a hollow housing and input means mounted in the hollow housing for providing air to and accepting air from the interior of the hollow housing; a generally vertically arranged diaphragm means including first and second faces, mounted within the hollow housing to define an air chamber between the first face of the diaphragm means and a portion of the interior of the hollow housing, the air chamber being defined adjacent the transducer input such that the transducer input provides air to and receives air from the air chamber; a horizontally arranged rod having a first end and a second enlarged end, with the first end of the rod in direct contact with the second face of the diaphragm means, and with the second enlarged end of the rod extending from said housing and forming a foot-plate and with the second end having a crosssectional area which is small with respect to the exposed surface area of the eye; means fixed with respect to the transducer housing for horizontally slidably mounting the rod; a pressure bulb including first one way valve means for only allowing the entrance of air from the atmosphere into the bulb and second one way valve means for only allowing the exit of the air from the bulb; a first tube connected to the second one way valve means of the pressure bulb; a second tube connected to the transducer input; a third tube connected to the input of the reservoir; and means for interconnecting the first tube, the second tube, and the third tube for simultaneously providing air under pressure from the bulb to both the manometer and the air chamber.
Claim 2
Dependent Claim
339 words
A compression ophthalmodynamometer for measuring blood pressure in the eye of a human, comprising in combination: a mercury manometer including a hollow graduated scale arranged to accommodate a column of mercury and a reservoir arranged to hold a supply of mercury, the reservoir communicating with the hollow of the graduated scale and having an input arranged to accept air under pressure; transducer apparatus including a hollow housing and input means mounted in the hollow housing for providing air to and accepting air from the interior of the hollow housing; a generally vertically arranged diaphragm means including first and second faces, mounted within the hollow housing to define an air chamber between the first face of the diaphragm means and a portion of the interior of the hollow housing, the air chamber being defined adjacent the transducer input such that the transducer input provides air to and receives air from the air chamber; a horizontally arranged rod having a first end and a second enlarged end, with the first end of the rod in direct contact with the second face of the diaphragm means, and with the second enlarged end of the rod extending from said housing and forming a foot-plate and with the second end having a crosssectional area which is small with respect to the exposed surface area of the eye; means fixed with respect to the transducer housing for horizontally slidably mounting the rod; a pressure bulb including first one way valve means for only allowing the entrance of air from the atmosphere into the bulb and second one way valve means for only allowing the exit of the air from the bulb; a first tube connected to the second one way valve means of the pressure bulb; a second tube connected to the transducer input; a third tube connected to the input of the reservoir; and means for interconnecting the first tube, the second tube, and the third tube for simultaneously providing air under pressure from the bulb to both the manometer and the air chamber.
Claim 3
Dependent Claim
205 words
An ophthalmodynamometer for use with an air pressure measuring device for measuring the blood pressure in the eye of a human, comprising in combination: a foot having a cross-sectional area which is small with respect to the exposed surface area of the eye; an air-pressure-to-proportional-contact-forcE transducer operating in a linear range including an input arranged to receive air under pressure and means for reacting to the air under pressure for applying a contact force which is proportional to the air pressure applied to the reacting means; generally horizontally arranged means, having one end thereof connected to the foot and the other end thereof in direct contact with the reacting means, for conveying the contact force provided by the reacting means of the transducer to the foot; operator controlled air means for selectively providing air under pressure between at least 0 and 300 millimeters of mercury over atmospheric pressure; means arranged to connect an air pressure measuring device; and means connected to the means arranged to connect to an air pressure measuring device, the air means, and the transducer input for simultaneously conducting the air under pressure from the air means to both the means arranged to connect to a measuring device and the transducer input.
Claim 4
Dependent Claim
205 words
An ophthalmodynamometer for use with an air pressure measuring device for measuring the blood pressure in the eye of a human, comprising in combination: a foot having a cross-sectional area which is small with respect to the exposed surface area of the eye; an air-pressure-to-proportional-contact-forcE transducer operating in a linear range including an input arranged to receive air under pressure and means for reacting to the air under pressure for applying a contact force which is proportional to the air pressure applied to the reacting means; generally horizontally arranged means, having one end thereof connected to the foot and the other end thereof in direct contact with the reacting means, for conveying the contact force provided by the reacting means of the transducer to the foot; operator controlled air means for selectively providing air under pressure between at least 0 and 300 millimeters of mercury over atmospheric pressure; means arranged to connect an air pressure measuring device; and means connected to the means arranged to connect to an air pressure measuring device, the air means, and the transducer input for simultaneously conducting the air under pressure from the air means to both the means arranged to connect to a measuring device and the transducer input.
Claim 5
Dependent Claim
55 words
The ophthalmodynamometer of claim 2, wherein the transducer includes at least one air pressure chamber receiving air from the transducer input, and wherein the reacting means comprises a diaphragm forming at least a part of the boundary of the air chamber and arranged to move in relation to the air pressure in the air chamber.
Claim 6
Dependent Claim
49 words
The ophthalmodynamometer of claim 3, wherein air means comprises a hand-held compressor bulb including the first one way valve means for only allowing the entrance of air from the atmosphere into the bulb and second one way valve means for only allowing the exit of air from the bulb.
Claim 7
Dependent Claim
79 words
The ophthalmodynamometer of claim 4, wherein the air means comprises: a first tube extending from the second one way valve means of the bulb; a second tube extending from the means arranged to connect to a measuring device; a third tube extending from the input of the transducer; and means for interconnecting the first tube, the second tube, and the third tube to allow the exchange of air between each of the first tube, second tube, and third tube.
Claim 8
Dependent Claim
38 words
The ophthalmodynamometer of claim 5, wherein the conveying means includes a rod horizontally slidably mounted with respect to the transducer, the rod having one end in contact with the diaphragm and the other end attached to the foot.
Claim 9
Dependent Claim
27 words
The ophthalmodynamometer of claim 6, wherein the end of the rod in contact with the diaphragm is reduced in diameter from the remaining portions of the rod.
Claim 10
Dependent Claim
40 words
The ophthalmodynamometer of claim 2, wherein the conveying means includes a rod horizontally slidably mounted with respect to the transducer, the rod having one end in contact with the means for reacting and the other end attached to the foot.
Claim 11
Dependent Claim
25 words
The ophthalmodynamometer of claim 8, wherein the end of the rod adjacent the transducer is reduced in diameter from the remaining portions of the rod.
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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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |