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Graduated bowman probe

Develop a graduated measurement probe that will allow for the precise clearance of a nasolacrimal duct obstruction during ophthalmological surgery.

Project Overview

Bowman probes are the standard instrument used in interrogation of the nasolacrimal (tear duct) system in Ophthalmology. They are available in various sizes and provide tactile feedback to the surgeon when probing the canalicular/nasolacrimal system, allowing them to assess for strictures, discontinuities, obstruction, or other abnormality within its lumen. Probing is typically performed prior to the passage of implants such as nasolacrimal stents (eg. Crawford, Lacriflow, Nunchucku, Monoka), to confirm patency of the nasolacrimal system. Available probes on the market do not have any markings on them which may allow the surgeon to make measurements to points within the canalicular/nasolacrimal lumen (eg. a stricture at 30 mm distal to the punctum), which can be helpful in correlating with imaging findings, or for accurate clinical documentation and therefore inform management of nasolacrimal pathologies. We propose the development of such a stent with inscribed bands corresponding to millimeter markings which may be referenced during canalicular or nasolacrimal probing.

Project Status

This week the team received feedback from Professor Ohnsorg on how to improve our design matrix. Specifically, she suggested that we could add a column for laser annealing given its significant differences compared to laser engraving. The team also created the slides for our preliminary presentation and picked up a set of bowman’s probes from Dr. Law to show our peers during the presentation. The team is also working on setting up a meeting with Professor Pfefferkorn to see if he can help us with the laser annealing process and give us clarity.

Team Picture

Graduated Bowman Probe Team Members: Caleb White (Left), Neel Srinivasan (Middle-Left), Caden Robinson (Middle-Right), Cole Miller (Right)
Graduated Bowman Probe Team Members: Caleb White (Left), Neel Srinivasan (Middle-Left), Caden Robinson (Middle-Right), Cole Miller (Right)

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Team Members

Advisor and Client

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