General Information

Serial #

N/A

Part Number

1

Total Parts

16

AKA

N/A

Patents

N/A

General Description

Metal frame and fittings; glass tubes; plastic caps; cork stoppers

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

28.2 cm

Width

12.8 cm

Height

24.3 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Medical Technology

Category

Chemicals & medications

Sub-Category

N/A

Manufacturer

AKA

Coxeter

Country

United Kingdom

State/Province

Unknown

City

London

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

Part of a collection of medical technologies donated to the Canada Science and Technology Museums Corporation by the Canadian Anesthesiologists’ Society. This machine was lent to CAS by Dr. Jeremy Sloan of North York, Ontario in 1995. Dr. Sloan is regarded as a leader in the promotion of safety standards for anesthetic equipment.

Function

Used to support the administration of anesthesia.

Technical

The original concept of Boyle's machine was invented by the British anaesthetist Henry Boyle (1875–1941) in 1917. Boyle promoted intratracheal insufflation techniques using nitrous oxide, oxygen and ether, replacing open-drop anaesthesia. Initially he used imported Gwathmey machines from the USA, but finding them unreliable, he developed his own continuous-flow machines. His design included cylinders for the gases and a "Boyle's Bottle" to vaporize diethyl ether. Until recently, an anaesthetic machine was often referred to as a "Boyle's Machine" in honour of his contribution. Dr. Sloan believes that this machine has an unsafe design because it was hard to assemble which often resulted in connection errors and issues during operation. (ref.1)

Area Notes

Unknown

Details

Markings

Proper front, at bottom of meter on proper right: "O2 CO2 N2O"/ On tubes inside the meter: proper right tube: "1/ 2/ 4/ 6 /8/ 10/ 12"/ middle tube: "1/ 2/ 3"/ proper left tube: "2/ 4/ 6/ 8/ 10/ 12/ 14/ 16/ 18/ 20"/ On top of meter: "COXETERS'S/ FLOWMETER/ PATENT/ No. 347467"/ Next to levers above each of two bottles: "ON/ OFF/ PATENT/ No. 331050"/ On bar above each bottle: "PATENT No./ 258454/ COXETER/ LONDON"

Missing

Appears complete

Finish

Clear glass and polished metal

Decoration

N/A