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Two-Valve Cannula (Wolf)

Health Sciences · Robert W. Jackson Arthroscopy

A metal instrument consisting of a hollow channel with a rotating collar at one end to lock to secure corresponding instruments. Just beyond the collar are two valves that extend horizontally from the tube in opposite directions. These valves have Luer-like ports for attaching an irrigation system.

This instrument was not received with its corresponding items such as blunt or sharp trocars.

Accession Number: 2020.JAC.21

Alternative Name:

Primary Materials: Stainless Steel


Printed on the section between the two valves: “5,7⌀”
Printed on the collar: “WOLF 8853.04”
Stamped on the base of one of the valves: “31”

Dimensions (cm): Height = 6, Width = 3, Length= 13.



The finish on this instrument is lightly work at edges. There are very fine scratches around the stem. Both valve handles and the locking handle move as they should.

Associated Instruments:


Richard Wolf GmbH, Knittlingen, Germany.

Date of Manufacture: post 1976.


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

Additional Information and References:

Historical Notes: