Conveying device, cardiac pacing device and fixing structure

Abstract

The invention provides a conveying device, a cardiac pacing device and a fixing structure. The fixing structure includes a shell, a driving member and elastic members; the shell has a first inner cavity and a groove, the driving member is partially accommodated in the first inner cavity, and one end of the driving member extends out from the near end part of the first inner cavity to be detachablyconnected with a driving sheath; the elastic members are accommodated in the first inner cavity, one end of each elastic member is connected with the driving member, and the other end extends towardsthe exterior of the driving member and extends into the groove; and the driving member is in fit connection with the shell, and can drive the elastic members to move in the groove along the axial direction of the shell to extend or contract the elastic members to the groove, so that the fixation, contraction and readjustment of the pacing position of the cardiac pacing device in vivo can be realized. The fixing structure is simple and convenient to operate, is not restricted by the thickness of a tissue wall, and has convenient fixing, so that the cardiac pacing device can be fixed in a ventricle or in an atrium, thereby realizing dual-chamber pacing and physiological pacing synchronous with the ventricle and the atrium.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a delivery device, a cardiac pacemaker and a fixing structure thereof. Background technique [0002] Since its introduction in 1958, cardiac pacemakers have become the first-line treatment for bradyarrhythmia diseases. After more than half a century of development and innovation, cardiac pacemakers have been implanted with a single wire through the chest to pace the ventricle, and gradually developed into 2 to 3 wires implanted through the vein to provide atrioventricular physiological pacing and even biventricular pacing. Synchronized pacing. However, lead dislocation, thrombosis, tricuspid regurgitation, infection and lead-related complications have not only affected the normal use of pacemakers, but also seriously endangered the life, health and quality of life of patients. Among them, when the infection is related to the complications of the lead, the lead should be...

AI Technical Summary

Problems solved by technology

Therefore, the existing leadless pacemaker can only be fixed at the apex of the right ventricle, so that the current leadless pacemaker can only realize ventricular single-chamber pacing, and cannot realize dual-chamber pacing (DDD pacing mode), so , the existing leadless pacemaker is prone to non-physiological pacing that leads to atrioventricular desynchronization

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