Cardiac pacemaker wire

By designing a limiting and fixing module on the pacemaker lead and using oblique barbs to hook the heart tissue, the problem of lead displacement was solved, achieving stable fixation and good contact of the lead, thus improving pacing effect.

CN224540795UActive Publication Date: 2026-07-24TAIZHOU UNITED MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202521807668.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-25
Publication Date
2026-07-24
Estimated Expiration
2035-08-25

AI Technical Summary

Technical Problem

The insulation surface of existing pacemaker leads is relatively smooth, which makes the leads easy to shift when the patient moves or the heart beats, affecting the fixation effect and potentially leading to poor pacing or the need to readjust the electrode position.

Method used

The device employs a limiting and fixing module, which includes a corrugated sleeve and a cannula assembly that are slidably fitted onto the outside of the conductor. The cannula assembly is fixedly connected with multiple oblique barbs, which are used to prevent conductor displacement after implantation into the surrounding tissue. By hooking the pericardium of the surrounding tissue with the oblique barbs, combined with the moderate movement of the corrugated sleeve, good contact between the electrode head and the heart tissue is ensured.

Benefits of technology

It effectively prevents the conductor from shifting during patient activity or heartbeat, reduces damage to the endocardium, ensures stable fixation of the electrode tip, improves pacing effectiveness, and simplifies the position adjustment process.

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Abstract

The utility model discloses a cardiac pacemaker wire, comprising a conductive transmission module comprising a conductor, an insulating layer covered on the outer surface of the conductor, two electrode tips respectively fixed on two ends of the conductor, and a limiting fixing module used for being contacted with heart tissues to realize sensing and stimulation of electric signals, the corrugated sleeve is slidably sleeved outside a conductor, and the sleeve assembly is fixedly connected with a plurality of uniformly distributed inclined barbs. According to the utility model, the inclined barbs can hook the pericardium of the surrounding tissue, so that the conductor is prevented from displacing, the conductor can be smoothly pulled out only by rotating the conductor to enable the inclined barbs not to hook the pericardium, and the sleeve assembly can be properly moved through the corrugated sleeve, so that the electrode tip is always kept in good contact with the heart tissue; and the damage of the inclined barbs to the endocardium in the pulling process of the conductor is reduced.
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