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Unidentified broken instrument

Health Sciences · Robert W. Jackson Arthroscopy

A tube-like instrument, apparently broken, with a locking mechanism similar to those used to lock obturators into arthroscope sheaths. The hollow tip appears to be snapped or severed with a portion of the tip missing. There is a dark red and an off-white band of marking tape around the handle.

Note that this artifact was received in a resealable plastic bag labeled “Watanabe Cannulas.” However, it is not a cannula and does not match obturators shown in Watanabe arthroscope trade literature. The locking mechanism is not of the same type used in Watanabe instruments in this collection.

Accession Number: 2021.JAC.95

Alternative Name:

Primary Materials: Stainless Steel


Dimensions (cm): Max diameter = 2, Length = 9.5

Function: Unknown


This instrument appears to be broken and incomplete.

Associated Instruments:

Manufacturer: Unknown

Date of Manufacture: Unknown.


The Robert W. Jackson Arthroscopy Collection was acquired by the University of Toronto from Dr. Jackson’s family on November 12th, 2020.

This artifact was received in a Ziploc-type bag labelled “Watanabe Cannulas.”

Additional Information and References:

Historical Notes:

  • Donated to UTSIC