Patent US407198A successfully refreshed from Google Patents.
Patent US5646709A successfully refreshed from Google Patents.
US5646709A
Expired / Lapsed
US
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Portable hand-held pupillometer with dynamic electronic image centering aid and method of use thereof
Assignee: FAIRVILLE MEDICAL OPTICS Inc
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Filing: 1995-04-18
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Granted: 1997-07-08
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Expires: 2015-04-18
Abstract
Abstract Portable hand-held pupillometers for characterizing a subject's pupil which are operated by a user. The hand-held pupillometer comprise optical units for dynamically imaging the subject's pupil, and centering units interfaced and operated by the user for centering the subject's pupil on the optical unit in preparation for imaging the subject's pupil. The hand-held pupillometers taught herein allow a user of the system to accurately and efficiently obtain an image of the subject's pupil which may be particularly useful for the diagnosis of Alzheimer's disease. The centering unit may also be used to display messages or pupil size and dynamic response data to the user in an easily read and useable format.
Inventors
- 👤 Elbert P. Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:17
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/14; A61B3/145; A61B3/11; A61B3/112
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
58 words
A portable, hand-held pupillometer for characterizing a subject's pupil and which is operated by a user comprising: a hand-held optical unit for dynamically imaging the subject's pupil; and an electronic centering unit interfaced to the optical unit and operated by the user for centering the subject's pupil on the optical unit in preparation for imaging the subject's pupil.
Claim 2
Dependent Claim
58 words
A portable, hand-held pupillometer for characterizing a subject's pupil and which is operated by a user comprising: a hand-held optical unit for dynamically imaging the subject's pupil; and an electronic centering unit interfaced to the optical unit and operated by the user for centering the subject's pupil on the optical unit in preparation for imaging the subject's pupil.
Claim 3
Dependent Claim
31 words
The portable hand-held pupillometer recited in claim 1 further comprising printed circuit board means interfaced to the hand-held optical unit for driving the optical unit to dynamically image a subject's pupil.
Claim 4
Dependent Claim
20 words
The portable hand-held pupillometer recited in claim 2 wherein the printed circuit board means is a PCMCIA printed circuit board.
Claim 5
Dependent Claim
23 words
The hand-held pupillometer recited in claim 3 further comprising a scanning circuit for providing serial data which is indicative of the subject's pupil.
Claim 6
Dependent Claim
32 words
The hand-held pupillometer recited in claim 4 further comprising a centering unit display circuit interfaced to the scanning unit which receives serial data from the scanning unit indicative of the subject's pupil.
Claim 7
Dependent Claim
22 words
The hand-held pupillometer recited in claim 3 wherein the PCMCIA circuit board implements a first-in-first-out data scheme to obtain a pupil image.
Claim 8
Dependent Claim
25 words
The portable hand-held pupillometer recited in claim 6 further comprising a laptop computer in which the PCMCIA circuit card resides and which drives the pupillometer.
Claim 9
Dependent Claim
17 words
The portable hand-held pupillometer recited in claim 1 wherein the centering unit comprises a liquid crystal display.
Claim 10
Dependent Claim
29 words
The hand-held pupillometer recited in claim 8 wherein the hand-held optical unit comprises a plurality of diodes and a viewing bore through which the user views the subject's pupil.
Claim 11
Independent Claim
76 words
A system for dynamically imaging a subject's pupil comprising: hand-held optical unit means for dynamically imaging the subject's pupil; centering means interfaced to the optical unit means and operated by a user of the system for centering the subject's pupil on the optical unit means in preparation for imaging the subject's pupil; and printed circuit board means interfaced to the hand-held optical unit means for driving the optical unit means to dynamically image the subject's pupil.
Claim 12
Independent Claim
76 words
A system for dynamically imaging a subject's pupil comprising: hand-held optical unit means for dynamically imaging the subject's pupil; centering means interfaced to the optical unit means and operated by a user of the system for centering the subject's pupil on the optical unit means in preparation for imaging the subject's pupil; and printed circuit board means interfaced to the hand-held optical unit means for driving the optical unit means to dynamically image the subject's pupil.
Claim 13
Dependent Claim
23 words
The system recited in claim 10 further comprising a computer in which the printed circuit board means is interfaced to drive the system.
Claim 14
Dependent Claim
18 words
The system recited in claim 11 wherein the printed circuit board means is a PCMCIA printed circuit card.
Claim 15
Dependent Claim
14 words
The system recited in claim 12 wherein the centering means is an LCD display.
Claim 16
Dependent Claim
39 words
The system recited in claim 13 wherein the hand-held optical unit means further comprises a set of diodes to provide illumination to produce a pupil image, and a viewing bore through which the user can view the subject's pupil.
Claim 17
Dependent Claim
12 words
The system recited in claim 14 wherein the diodes are infrared-emitting diodes.
Claim 18
Dependent Claim
43 words
The system recited in claim 15 further comprising a scanning unit interfaced to the centering means for controlling pupil image data gathering, an LCD processor for receiving serial data from the scanning unit, and first-in-first-out processing means for driving the pupil data gathering.
Claim 19
Independent Claim
60 words
A method of characterizing a subject's pupil comprising the steps of: viewing the subject's pupil by a user with a hand-held optical unit; electronically displaying the subject's pupil on the hand-held optical unit; centering the subject's pupil by the user on the hand-held optical unit; and imaging the subject's pupil on the hand-held optical unit, thereby characterizing the subject's pupil.
Claim 20
Independent Claim
60 words
A method of characterizing a subject's pupil comprising the steps of: viewing the subject's pupil by a user with a hand-held optical unit; electronically displaying the subject's pupil on the hand-held optical unit; centering the subject's pupil by the user on the hand-held optical unit; and imaging the subject's pupil on the hand-held optical unit, thereby characterizing the subject's pupil.
Claim 21
Dependent Claim
28 words
The method recited in claim 17 further comprising the step of initially centering the pupil by the user with a viewing bore provided on the hand-held optical unit.
Claim 22
Dependent Claim
21 words
The method recited in claim 18 further comprising the step of gathering data from the pupil image in response to imaging.
Claim 23
Dependent Claim
27 words
The method recited in claim 19 further comprising the step of scanning the pupil with infrared radiation to gather data from the pupil with reflected infrared radiation.
References Cited (Backward Citations)
US4755043A
Cited
US5187506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-07 | 2001-01-06 | 2001-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-07 | 2005-01-06 | 2005-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-07 | 2009-01-06 | 2009-07-08 | $7700.00 | Window Closed / Lapsed |