US3763696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the intraocular pressure
Assignee: Individual
•
Filing: 1971-09-15
•
Granted: 1973-10-09
•
Expires: 1991-09-15
Abstract
Abstract An apparatus for determining the intraocular pressure is described which involves use of a probe contacting the eye and caused to carry out mechanical oscillations under the influence of a generator. The reactional pressure yielded by the eye when subjected to the oscillations of the probe is determined by means of a pressure-sensitive device connected between the generator and the probe.
Inventors
- 👤 C Krakau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:18
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
An apparatus for determining the intraocular pressure of the human eye, comprising a probe to be brought into contact with the eye, generator means for generating mechanical oscillations, means for transferring those oscillations to the probe wherein said generator means vibrates said probe at a substantially constant amplitude and frequency and pressure-sensitive means connected between said generator means and said probe to conduct the vibration of the probe and to generate an electrical signal as a function of the reactional pressure against the oscillations exerted by the eye.
Claim 2
Independent Claim
88 words
An apparatus for determining the intraocular pressure of the human eye, comprising a probe to be brought into contact with the eye, generator means for generating mechanical oscillations, means for transferring those oscillations to the probe wherein said generator means vibrates said probe at a substantially constant amplitude and frequency and pressure-sensitive means connected between said generator means and said probe to conduct the vibration of the probe and to generate an electrical signal as a function of the reactional pressure against the oscillations exerted by the eye.
Claim 3
Dependent Claim
16 words
An apparatus as claimed in claim 1, in which said pressure-sensitive means comprise a piezo-electric crystal.
Claim 4
Dependent Claim
31 words
An apparatus as claimed in claim 2, in which said crystal is of elongated form, its one end being connected to said generator means and its other end to said probe.
Claim 5
Dependent Claim
38 words
An apparatus as claimed in claim 1, in which the generator means, the pressure-sensitive means and the probe form a unit suspended by a pendulum permitting adjustment of the static contact pressure between the probe and the eye.
Claim 6
Dependent Claim
22 words
An apparatus as claimed in claim 4, in which said pendulum has a displaceable weight for adjustment of the static contact pressure.
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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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |