Radiofrequency ablation of principle

RF is a high-frequency vibration frequency of 150,000 times per second.The human body is a complex structure made of many organic and inorganic substances,the body fluid contains large amounts of a dielectric,such as ionic,water,colloidal particles,etc.,to move the body mainly depends on the ion conducting current.In the role of high frequency alternating current,the concentration of ions in the direction of change with the current direction of the positive and negative half-cycle changes back and forth.In the high-frequency oscillation,the ions between the two electrodes along the direction of the power line rapid movement,the moving state of the vibration state gradually changes.



Since the size of various ions,mass,charge,and move at different speeds,friction between ions collide with other particles and produce biological heat effect.Poor heat dissipation due to tumor,the tumor tissue temperature higher than its adjacent normal tissue,with cancer cells sensitive to heat,high heat to kill cancer cells,but the side effects do not occur.Therapeutic mechanism of thermal effects of radiofrequency treatment instrument having ablation and cutting function mainly thermal effects.Electromagnetic waves within a specific range of radio waves in nature.

Now mostly used for medical radio frequency of 200KHz-750KHz.(Endoscopic) radio frequency treatment instrument operating frequency of 400KHz.When the RF current flows through the body tissue,due to the rapid changes in the electromagnetic field so that the positive and negative ions within the fast-moving cells,so as well as their friction with other molecules within cells,plasma,etc.heated so that the lesion between them,resulting in moisture inside and outside cells evaporation,drying,aseptic necrosis resulting condensation off,so as to achieve the purpose of treatment.Radiofrequency ablation treatment under local anesthesia,the three to four electrode catheter through the femoral vein,subclavian vein into the coronary sinus,high right atrium and His bundle and right ventricle and other parts,atrial and ventricular stimulation to induce consistent with the clinical tachycardia,tachycardia locate the point of origin,then the ablation electrode catheter has been positioned with the delivery point of origin and is connected to the RF generator in vitro.Repeat after discharge electrophysiological examination,if not induce tachycardia and clinical follow-up without seizures,then the success of ablation.

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