its not face maker but pace maker
it is a medical device which uses electrical impulses, delivered by electrodes contacting the heart muscles, to regulate the beating of the heart.
The primary purpose of a pacemaker is to maintain an adequate heart rate
, either because the heart's native pacemaker is not fast enough, or there is a block in the heart's electrical conduction system
. Modern pacemakers are externally programmable and allow the cardiologist to select the optimum pacing modes for individual patients.
Some combine a pacemaker and defibrillator in a single implantable device. Others have multiple electrodes stimulating differing positions within the heart to improve synchronisation of the lower chambers of the heart.