The invention relates to the technical field of
cardiac pacing, in particular to a pacemaker and an implantation method thereof. The pacemaker comprises a hollow pacing shell, a battery used for providing
electric energy is installed at the position, close to the middle, in the pacing shell, and a sensing
electrode and a pacing
electrode are arranged on the two sides of the battery respectively. The pacemaker is installed in the ventricular septum, can replace a His bundle to play a role, is special in position, can well sense the electrical activity of the atrium and the
ventricle, obtains more comprehensive data, is beneficial to guiding the work of a pacemaker, adopts a lead-free pacemaker, avoids the possibility of subsequent complications such as lead breakage, and improves the use safety of the device, meanwhile, the ventricular septum is close to the
body surface, the trouble of follow-up replacement of the pacing shell is reduced, operation is conducted through ultrasonic guidance, harm caused by long-time contact of an operator and a patient with rays is avoided, meanwhile, by the adoption of the implantation method, trauma is small, and normal activity can be recovered after implantation.