Historical Anaesthetic Equipment

From a Catalogue of Surgical Equipment
published in London, England, in 1930

Endo-Tracheal Ether Apparatus, Mennellís

No. Description
357 Endo-Tracheal Ether Apparatus, Mennellís, latest pattern, large ether chamber with gauge, mercury blow-off and manometer, mounted on polished mahogany base, with stout rubber tubing and one white endo-tracheal catheter.

- Polished mahogany carrying case for above, with shelf for tubing, catheters, etc.. .. .. extra £1 7s. 6d.

each 12 5 0
Endo-Tracheal Ether Apparatus, Mennellís

An Endo-Tracheal Ether Apparatus

By Z. MENNELL, M.B., M.R.C.S. (Lond.)

Senior Anaesthetist, St. Thomasís Hospital; Senior Anaesthetist National Hospital for the Paralysed and Epileptic, London.

Directions for Use.

A stout rubber tube should be connected from the source of air supply to the tubing mount "A" at the bottom left hand side of the unit. The control handle "C" mounted immediately above the inlet should he at the position marked "blow-off" before commencing to give the anaesthetic. When all is ready, this handle should be turned anti-clockwise towards the position marked "Air", allowing the air to pass gradually on to the mixing handle "D" mounted above the ether chamber. By turning this handle either to the right or left of its mid-way position a proportionate quantity of air is diverted into the ether chamber "H" where it passes over the surface of the ether, and from thence to the outlet.

The manometer "M" provided, indicates the pressure of the etherised air supply. and in the event of this rising above 30 mm. Of mercury, a blow-off occurs in the mercury valve "F" mounted behind the ether chamber. The small tap "G" is for use in cases of emergency, and quickly reduces the supply of ether vapour to the patient.

Note about prices:
British prices were in pounds (£ ), shillings (s.) and pence (d.). Each shilling is 1/20th of a pound, and each penny is 1/12 of a shilling or 1/240th of a pound. To convert to pounds, count each shilling as 0.05 pounds and each penny as 0.00417 pounds. Three pounds, twelve shillings and six pence is therefore 3.625 pounds.
In July 1996 one pound was worth 2.12 Canadian or 1.55 US dollars.

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Revised March 21st, 1999