Wire-free pacemaker

Abstract

The invention provides a wire-free pacemaker, which comprises a wire-free pace-making device and a supporting portion. The supporting portion is arranged on the head portion of the wire-free pace-making device and at least partially surrounds the head end of the wire-free pace-making device. The head end of the supporting portion is released and expanded relative to the head end of the wire-free pace-making device. When the wire-free pacemaker is released to an appointed position, the head end of the supporting portion is provided with an acting point for abutting against the appointed position. Therefore, after the wire-free pacemaker is implanted at an appointed position in a heart, the head end of the supporting portion abutting against the cardiac muscle increases the force bearing point and even the stress area of the cardiac muscle to buffer cardiac muscle stress caused by gravity of the wire-free pacemaker, and accordingly the acting force applied to unit area of the cardiac muscle is reduced, and the problem of cardiac muscle perforation is avoided.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a leadless pacemaker. Background technique [0002] Cardiac pacing system can treat cardiac pacing and conduction dysfunction heart disease, can effectively reduce the risk of death in patients with severe bradycardia, and improve the quality of life of patients. The traditional cardiac pacing system consists of two parts: a pacemaker and an electrode lead. The pacemaker generates electrical pulses, which are conducted by the electrode leads to the electrodes in contact with the myocardium, thereby stimulating the myocardium to excite and contract the heart. But it has the following defects: (1) Due to the existence of electrode wires, it is easy to cause side effects such as electrode dislocation, wire breakage, heart perforation, and venous thrombosis in the wire path, which not only affects the normal work of the pacemaker, but also seriously endangers the life and...

AI Technical Summary

Problems solved by technology

But it has the following defects: (1) Due to the existence of electrode wires, it is easy to cause side effects such as electrode dislocation, wire breakage, heart perforation, and venous thrombosis in the wire path, which not only affects the normal work of the pacemaker, but also seriously endangers the life and health of patients. and quality of life; (2) Electrode removal surgery is more difficult and needs to be completed by skilled doctors in a larger electrophysiology center

Both of these two fixation mechanisms are head-end-to-end fixation. When the head end is embedded in the myocardium, the myocardium will be subject to greater pressure or tension (pressure in many cases), and because the leadless pacemaker itself has a certain Weight, leadless pacemaker will hit the myocardium like a hammer when it beats with the heart muscle for a long time, there is a great risk of myocardial perforation

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