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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 continued its fabrication plan for the set of graduated Bowman’s probes. The team first met with UW makerspace staff to inquire about the capabilities their laser machines had. We found out that while they can laser anneal/mark stainless steel, they are unable to help us out due to the small probe size & surface area. The team has also reached out to Professor Justin Williams to ask for advice on the fabrication and design plans of the Bowman’s probes. The team has again reached out to Professor Pfefferkorn to update him on the makerspace response and ask if he is still interested in helping us with fabrication. The team also plans to have at least one prototype completed prior to show and tell such that we maximize the feedback received from our peers.

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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Progress Reports

Contact Information

Team Members

Advisor and Client

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