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(12) Patent Application: | (11) CA 2213648 |
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(54) English Title: | THE CHAN'S FLUID DEPLETION MONITORING DEVICE |
(54) French Title: | APPAREIL DE SURVEILLANCE DE LA DEPLETION DE LIQUIDE DU CHAN |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | |
(74) Associate agent: | |
(45) Issued: | |
(22) Filed Date: | 1997-10-14 |
(41) Open to Public Inspection: | 1999-04-14 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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This invention is a fluid depletion monitoring device. It is used to remind people to change
a solution bag before it runs out completely. The inventor works in an ophthalmology
operating room of a Toronto hospital. Phaco Emulsification is a fairly new technique in
cataract extraction surgery (removal of an opaque lens from the eye). A small piece of
instrument called ultra-sound-handpiece from the emulsifier is inserted into the eyeball. By
using ultrasound, the opaque lens is fragmented into micro particles and aspirated out, and
at the same time, a balanced salt solution (BSS) is infused into the eye in order to keep the
eyeball in shape. This mechanism of aspiration and infusion must be maintained at all times
otherwise the eyeball will collapse and serious complications will occur.
L'invention consiste en un appareil de surveillance de la déplétion des liquides. L'appareil sert à rappeler au personnel de changer un sac à solution avant qu'il ne se vide complètement. L'inventeur travaille dans une salle d'opération en ophtalmologie, dans un hôpital de Toronto. La phaco-émulsification est une technique relativement nouvelle utilisée en chirurgie d'extraction de la cataracte (enlèvement d'un cristallin opaque de l'oeil). On insère dans le globe oculaire un petit instrument de l'émulsificateur, appelé pièce à main à ultrasons. Le cristallin opaque est fragmenté en microparticules par ultrasons et aspiré à l'extérieur, pendant qu'on infuse en même temps dans l'oeil une solution saline équilibrée (BSS) pour maintenir la forme du globe. Ce mécanisme d'aspiration et d'infusion doit être maintenu en tout temps, sinon le globe oculaire s'effondre, donnant lieu à de graves complications.
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2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Application Not Reinstated by Deadline | 2000-05-10 |
Inactive: Dead - Application incomplete | 2000-05-10 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 1999-10-14 |
Inactive: Office letter | 1999-08-11 |
Inactive: Correspondence - Formalities | 1999-05-31 |
Deemed Abandoned - Failure to Respond to Notice Requiring a Translation | 1999-05-10 |
Application Published (Open to Public Inspection) | 1999-04-14 |
Inactive: Incomplete | 1999-02-09 |
Inactive: First IPC assigned | 1997-11-13 |
Inactive: IPC assigned | 1997-11-13 |
Inactive: Filing certificate - No RFE (English) | 1997-10-28 |
Application Received - Regular National | 1997-10-27 |
Abandonment Date | Reason | Reinstatement Date |
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1999-10-14 | ||
1999-05-10 |
Fee Type | Anniversary Year | Due Date | Paid Date |
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Application fee - small | 1997-10-14 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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TIMOTHY Y. C. CHAN |
Past Owners on Record |
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None |