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

Model 3831 cardiac pacemaker, by Devices Ltd, England, 1970-1976
Artificial cardiac pacemakers were developed in the 1960s. They emit regulated electrical impulses. These stimulate the contraction of the heart muscles to provide sufficient rate of heartbeat. A pacemaker is implanted into the chest of a person whose natural pacemaker is too slow or who has a condition where the electrical pulses are impaired. This Model 3831 cardiac pacemaker was made by Devices Limited. It was powered by four mercury-zinc batteries. One million people worldwide are now fitted with pacemakers.
Details
- Category:
- Therapeutics
- Object Number:
- 1981-1520
- Materials:
- encapsulation, plastic, metal and plastic
- Measurements:
-
overall: 25 mm x 53 mm x 75 mm, .15kg
- type:
- cardiac pacemaker
- credit:
- St. George's Hospital