A cardiac pacing device with full automatic magnetic resonance compatibility

By employing a multi-dimensional detection and decision-making module and impedance reconstruction technology, the problems of erroneous switching and electromagnetic interference of cardiac pacemakers in MRI environments have been solved, enabling safe, dynamic response, and physiological pacing of cardiac pacemakers in MRI environments.

CN122582476AActive Publication Date: 2026-08-18CORERHYTHM MEDICAL TECH (HANGZHOU) CO LTD
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Patent Information

Application Number
CN202611087789.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-22
Publication Date
2026-08-18
Estimated Expiration
2046-07-22

AI Technical Summary

Technical Problem

Existing cardiac pacemakers pose risks of accidental switching, thermal damage caused by electromagnetic interference, and unexpected stimulation in MRI environments, and lack dynamic response to MRI scan cycles and physiological pacing recovery capabilities.

Method used

By combining magnetic field, motion, and attitude detection modules with digital signal processing modules, cascaded decision-making based on multi-dimensional physical constraints is achieved, pacing modes are dynamically switched, and impedance reconstruction and bipolar output are performed through charge pump and pacing output module to avoid electromagnetic interference.

Benefits of technology

It effectively eliminates the risk of accidental switching caused by everyday magnetic objects, achieves dynamic response in MRI scan cycles, restores physiological pacing, avoids thermal damage and unexpected stimulation, and ensures hemodynamic needs.

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Abstract

The application discloses a kind of heart pacing device with full-automatic magnetic resonance compatibility function, belong to medical instrument technical field, comprising: magnetic field detection module, motion detection module, attitude detection module are respectively used to detect static magnetic field characteristics, motion characteristics and attitude characteristics;Perception detection module, acquisition includes cardiac electrophysiological signal and magnetic resonance interference signal perception signal sequence and carries out perception event identification and signal intensity analysis to determine perception event trigger signal and magnetic resonance scanning active characteristics;Digital signal processing module, based on all characteristics, multi-dimensional physical constraint cascade decision, full-automatic conversion to magnetic resonance mode and output trigger instruction;Charge pump and pacing output module, according to trigger instruction dynamic adjustment pacing pulse timing, based on charge pump adjustment pacing pulse energy, and pulse output path, to avoid rectification effect and direct current component accumulation risk, truly realize full-automatic magnetic resonance compatible safe physiological pacing.
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