Atrial fibrillation rotor site real-time localization method
By combining fuzzy entropy with vector method, the CARTO3 system and the multipolar mapping catheter PENTARAY were used to perform three-dimensional modeling of the heart and calculate the multi-scale average fuzzy entropy of bipolar atrial endocardial electrical signals. This solved the problem of inaccurate rotor site localization in atrial fibrillation ablation, and achieved a higher ablation success rate and a lower postoperative recurrence rate.
CN115844535BActive Publication Date: 2026-07-24WUHAN UNIV
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Patent Information
- Application Number
- CN202211627025.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-16
- Publication Date
- 2026-07-24
- Estimated Expiration
- 2042-12-16
AI Technical Summary
Technical Problem
Existing technologies make it difficult to accurately locate the rotor site during atrial fibrillation ablation surgery, resulting in excessively large ablation areas and high postoperative recurrence rates.
Method used
The fuzzy entropy combined with vector method was used to perform three-dimensional modeling of the heart using the CARTO3 system and the PENTARAY multipolar mapping catheter. The multi-scale average fuzzy entropy of the bipolar atrial endocardial electrical signal was calculated to determine the orientation and location of the rotor site.
Benefits of technology
Precisely locating the rotor site reduces the ablation area, improves the success rate of radiofrequency ablation surgery, and lowers the risk of postoperative complications.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a real-time positioning method for rotor sites of atrial fibrillation. The method performs three-dimensional modeling on an atrium in operation, derives bipolar endocardial electrical signals and electrode positions collected by a multi-pole mapping catheter PENTARAY electrode pair from a CARTO3 system, then calculates average fuzzy entropy of the bipolar endocardial electrical signals, selects electrodes according to the calculated average fuzzy entropy of each electrode, draws a vector through entropy difference between the selected electrode pairs, finds a direction where the rotor is located by using a vector method and an expression, and finally determines a specific position of the rotor through the expression and a relationship between distance and energy. The application adopts endocardial bipolar electrical signals, can well remove ventricular noise, better guides a doctor to find a rotor direction of the atrial fibrillation in operation, accurately positions a specific position of the rotor site, greatly reduces an ablation area, increases a success rate and a recurrence rate of radiofrequency ablation operation, and can have a lower sequelae after operation.
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