CA2441513C - Replaceable prism for applanation tonometer - Google Patents
Replaceable prism for applanation tonometer Download PDFInfo
- Publication number
- CA2441513C CA2441513C CA2441513A CA2441513A CA2441513C CA 2441513 C CA2441513 C CA 2441513C CA 2441513 A CA2441513 A CA 2441513A CA 2441513 A CA2441513 A CA 2441513A CA 2441513 C CA2441513 C CA 2441513C
- Authority
- CA
- Canada
- Prior art keywords
- prism
- applanation surface
- light
- applanation
- tonometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 210000004087 cornea Anatomy 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000004410 intraocular pressure Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/16—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring intraocular pressure, e.g. tonometers
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Optics & Photonics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/811,709 US6736778B2 (en) | 1997-12-22 | 2001-03-19 | Replaceable prism for applanation tonometer |
| US09/811,709 | 2001-03-19 | ||
| PCT/US2002/007736 WO2002075368A2 (en) | 2001-03-19 | 2002-03-14 | Replaceable prism for applanation tonometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2441513A1 CA2441513A1 (en) | 2002-09-26 |
| CA2441513C true CA2441513C (en) | 2011-05-17 |
Family
ID=25207329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2441513A Expired - Lifetime CA2441513C (en) | 2001-03-19 | 2002-03-14 | Replaceable prism for applanation tonometer |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1377203A4 (de) |
| AU (1) | AU2002252345B2 (de) |
| CA (1) | CA2441513C (de) |
| WO (1) | WO2002075368A2 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7153267B2 (en) * | 2003-01-30 | 2006-12-26 | Francis Y Falck, Jr. | Ophthalmologic applanation prism replacement system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2643879A1 (de) * | 1976-09-29 | 1978-03-30 | Instrumentarium Oy | Verfahren und vorrichtung zum messen des augeninnendruckes |
| US4886066A (en) * | 1988-09-13 | 1989-12-12 | See Care Corporation | Tonometer having acoustic coupling detection |
| DE3931630A1 (de) * | 1989-09-22 | 1991-05-08 | Datron Electronic Gmbh | Verfahren und vorrichtung zur bestimmung des augeninnendrucks o. dgl. |
| US5070875A (en) * | 1990-11-19 | 1991-12-10 | Falcken, Inc. | Applanation tonometer using light reflection to determine applanation area size |
| GB9103360D0 (en) * | 1991-02-18 | 1991-04-03 | Clement Clarke Int | Improvements relating to applanation tonometers |
| US6179779B1 (en) * | 1997-12-22 | 2001-01-30 | Ffhk Development Company Llc | Replaceable prism system for applanation tonometer |
-
2002
- 2002-03-14 CA CA2441513A patent/CA2441513C/en not_active Expired - Lifetime
- 2002-03-14 WO PCT/US2002/007736 patent/WO2002075368A2/en not_active Ceased
- 2002-03-14 EP EP02721411A patent/EP1377203A4/de not_active Withdrawn
- 2002-03-14 AU AU2002252345A patent/AU2002252345B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP1377203A2 (de) | 2004-01-07 |
| WO2002075368A2 (en) | 2002-09-26 |
| EP1377203A4 (de) | 2007-11-14 |
| AU2002252345B2 (en) | 2005-07-14 |
| CA2441513A1 (en) | 2002-09-26 |
| WO2002075368A3 (en) | 2002-12-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20220314 |