A medical catheter tip with measurable contact force

Abstract

The invention provides a medical catheter head end capable of measuring contact force. The medical catheter head end capable of measuring contact force comprises a head end electrode, a force measuring module and a fixed connection piece. The head end electrode and the force measuring module are fixed together through the fixed connection piece. The force measuring module comprises a slider body, a rigid beam and a supporting piece fixedly connected to the rigid beam. A plurality of stretching slider components are arranged on the slider body. The rigid beam is provided with an inner cavity which is through in the axial direction. A plurality of sliding resistors are arranged on the supporting piece. The slider components correspond to the sliding resistors one to one through resistor probes installed at the tail ends of the components. During a radiofrequency operation, the medical catheter head end capable of measuring contact force judges the ablation depth by measuring pressure of the heart making contact with the catheter head end or artery tissue rich in the sympathetic nerve, reliable contact force data supporting is provided for a doctor, the doctor can select reasonable ablation power and time, and it can be guaranteed that safety of the high radiofrequency ablation operation is improved within a safety value range.

Description

Technical field [0001] The present invention relates to the technical field of medical devices, in particular to a medical catheter tip with a measurable contact force. Background technique [0002] In medical interventional operations, radiofrequency ablation catheters are widely used in the treatment of atrial fibrillation, arrhythmia, refractory hypertension and other diseases. The method of using the catheter is to insert the radiofrequency ablation catheter through the blood vessel into the heart or sympathetic artery by puncturing the femoral artery or radial artery with the assistance of an X-ray machine to perform radiofrequency ablation on the lesion. [0003] Obviously, this kind of radiofrequency ablation is done manually by experienced doctors, but because it is difficult for the human hand to accurately control the adhesion of the tip of the catheter to the human tissue, there are often complications of perforation and edema during radiofrequency ablation. occur. [00...

AI Technical Summary

Problems solved by technology

[0003] Obviously, this kind of radiofrequency ablation is performed manually by experienced doctors, but because it is difficult for human hands to accurately control the force of the catheter tip against human tissue, complications such as perforation and edema often occur during radiofrequency ablation occur

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