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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 had its first meeting with Dr. Law to gather preliminary information on his design requirements, potential ideas, and goals for application for the design in the clinic. The team prepared questions for Dr. Law, while keeping track of his answers in LabArchives. The team has also split up sections of the Performance Design Specification document, and plans to have it finished by Thursday, February 5th. Finally, the team plans to meet with Dr. Ohnsorg to discuss our continued research and the content of the first client meeting.

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)

File

  • PDS (February 5, 2026)

Progress Reports

Contact Information

Team Members

Advisor and Client

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