General Information

Serial #

home built

Part Number

2

Total Parts

3

AKA

N/A

Patents

N/A

General Description

metal & synthetic materials of construction.

Dimensions

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

Length

7.4 cm

Width

7.2 cm

Height

5.2 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Medical Technology

Category

Research

Sub-Category

N/A

Manufacturer

AKA

Pon

Country

Canada

State/Province

Ontario

City

Toronto

Context

Country

Canada

State/Province

Ontario

Period

This prototype device built in 1978, for experimental purposes. Never used on/by patients.

Canada

Prototype CPM machine for hand built by Craig Pon, a student at the University of Toronto. in 1978. This version was never actually used on a patient, but was the forerunner of the later devices. The concept of continuous passive motion [CPM], and design of CPM devices, was championed by Dr. Robert Salter, an orthopaedic surgeon at the Hospital for Sick Children and professor and head of orthopaedic surgery at the University of Toronto. One of 5 CPM devices donated to the History of Medicine Museum, Toronto by Toronto Medical Corp., Scarborough, Ont. in May 1987.

Function

Provides basic on/off control, power supplied by 2 C"- batteries , and acts as connection point for motor and AC adapter.

Technical

Based on the hypothesis that continuous passive motion would stimulate the healing and regeneration of articular cartilage through differentiation of pluripotential mesenchymal cells. CPM devices promote patient comfort, by improving circulation and encouraging wound healing, and preventing excessive post-operative swelling.

Area Notes

Unknown

Details

Markings

"ON", "OFF", "MOTOR/ OUT" and "A.C./ ADAPTER/ IN" printed on black dymo tape labels applied to box top exterior. Outline of battery shape, with ends marked "+" and "-" cast in raised form on inside of box base; 1 battery also labelled " "D" CELL " . "JAPAN" cast in raised print on box base. "987.4.1" printed in white on box base.

Missing

None. Requires 2 "D" batteries.

Finish

Unit cover has dark grey painted enamel finish; black synthetic switch; silver metal plug receptacles and minor fittings. Interior is silver metal; metal & synthetic fittings inside. Box bottom is black moulded synthetic; silver metal battery terminal connections. Red, black and white synthetic covering on wires connecting 2 halves of box.

Decoration

N/A