A cardiac radiofrequency ablation catheter contact force control device

Through magnetorheological fluid technology and a robot-assisted system, the contact force of cardiac radiofrequency ablation catheters is controlled in real time, solving the problem of inaccurate control of the contact force between the catheter and tissue, improving surgical safety and efficiency, and reducing doctor fatigue and patient recovery time.

CN114767261BActive Publication Date: 2025-09-09NANJING UNIV OF POSTS & TELECOMM
2 Cites 0 Cited by

Patent Information

Application Number
CN202210431033.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-04-22
Publication Date
2025-09-09
Estimated Expiration
2042-04-22

AI Technical Summary

Technical Problem

Existing cardiac radiofrequency ablation catheters have difficulty effectively controlling the contact force between the catheter and tissue during the ablation process, leading to misoperation and potential risks caused by the doctor's hand tremors during surgery, and existing controllers have high-frequency burr problems.

Method used

Magnetorheological fluid technology is combined with a robot-assisted operating system. Through the design of the master manipulator and the slave manipulator, sensors and magnetorheological dampers are used to monitor and control the contact force between the catheter and the tissue in real time, reducing the impact of hand tremors.

Benefits of technology

It improves the safety and efficiency of the operation, reduces the doctor's fatigue, shortens the patient's recovery time, and effectively filters out catheter tremors caused by hand tremors, thereby improving the ablation effect.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present invention discloses a cardiac radiofrequency ablation catheter contact force control device, a cardiac radiofrequency ablation catheter contact force control device, comprising a master manipulator and a slave manipulator. The master manipulator comprises a manipulation handle, a simulation catheter, a sensing unit and a magnetorheological damper. The manipulation handle is connected to the simulation catheter and can manipulate the rotation and axial horizontal movement of the simulation catheter. The sensing unit comprises a rotation sensor, an axial displacement sensor and a force sensor. The magnetorheological damper is arranged on the manipulation handle and is used to buffer the force value of the manipulation handle. The slave manipulator comprises a catheter, a catheter clamping mechanism, a catheter rotation drive mechanism, a catheter linear drive mechanism and a load sensor. The present invention adopts a remote control mode to improve the safety and efficiency of the operation, avoid the impact of radiation, reduce the pain of the patient during the operation, and shorten the postoperative recovery time; at the same time, the present invention uses a magnetorheological fluid device to effectively filter out the catheter tremor caused by the surgeon's hand shaking.
Need to check novelty before this filing date? Find Prior Art