Cutting type spiral part for lead fixation

By designing a cutting spiral part at the lead tip, the problems of impaired left ventricular function and low puncture efficiency caused by traditional cardiac pacing sites are solved, and the safe and efficient insertion of the lead tip is achieved.

CN120603622APending Publication Date: 2025-09-05SORIN CRM
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Patent Information

Application Number
CN202280102941.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2022-12-02
Publication Date
2025-09-05

AI Technical Summary

Technical Problem

Traditional cardiac pacing sites, such as right ventricular apex pacing, may lead to impaired left ventricular function, and it is difficult to optimize the insertion efficiency and safety of the lead during puncture.

Method used

The lead tip design is combined with a cutting spiral part, which cuts the tissue in a circumferential direction when screwing into the tissue, assisting the longitudinal insertion of the lead tip and reducing the energy and force required for puncture.

Benefits of technology

It improves the efficiency and safety of lead insertion, reduces the risk of tissue damage during puncture, and ensures that the lead tip is smoothly advanced to the target position.

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Abstract

The invention relates to a lead device comprising a lead tip having a distal fixation helix for fixing the lead tip at tissue of a patient, such as heart tissue, in particular ventricular septal tissue, where the fixation helix comprises a cutting portion for cutting the lead tip into the tissue when the fixation helix is screwed into the tissue. In addition to puncturing through the distal tip of the stationary helix (30), the tissue is cut in the circumferential direction of the stationary helix to assist in longitudinal insertion of the lead tip having the stationary helix into the tissue. Therefore, since the tissue is pre-cut in the circumferential direction at and / or around and / or within the fixation helix during the operation of screwing in the tissue, insertion and longitudinal advancement of the lead tip into the tissue can be facilitated and smoothed.
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