肿瘤射频消融治疗的创新技术（英文版）

nullAn Innovative Technique of Radio Frequency Ablation (Conformable Ablation Electrode) Honglui Wang President of Beijing Welfare Electronics Co.An Innovative Technique of Radio Frequency Ablation (Conformable Ablation Electrode) Honglui Wang President of Beijing Welfare Electronics Co.RFA—The most promising technique for treatment of malignant tumors. RFA—The most promising technique for treatment of malignant tumors. Real-time measuring and controlling temperature, minimal invasiveness; fast recovery; satisfactory curative effect; minimal complications; safety and reliability make it used widely for treatment of malignant tumors such as liver, lung, kidney, adrenal, prostate, breast, etc. So we believe that RFA is the most promising technique for the treatment of patients with various malignant tumors. The following bottlenecks caused by ablation electrode have remained a serious problem for a long time:The following bottlenecks caused by ablation electrode have remained a serious problem for a long time:(1) The lesion size produced by a single ablation is only 3~5cm in diameter. (2) It is difficult to perform conformable ablation for large tumors. (3) There is no reliable scientific basis for evaluations of curative effect after RFA treatment. (4) The long handle makes it inconvenient, even impossible, to locate under CT guide for fat patients. (5) The time to locate is too long After nearly a decade of research, Beijing Welfare Electronics Co. has broken through in a number of directions by developing a new generation of ablation electrode which is named Conformable Electrode. nullConformable Ablation Electrodenull1 Twelve needles of the conformable electrode are divided into two groups equally. Needles in each group can be stretched from or returned to the shaft of the conformable Electrode separately. Clinical significance: (1) Conformable ablation can be performed. (2) The demand of aim taking can be reduced. The main technical breakthroughs of The Conformable Ablation Electrode: 2 Major surface of needles is insulated2 Major surface of needles is insulatedClinical significance: (1) Major RF energy can be delivered to the margin of the tumor. A “pancake-like ” lesion shape can be performed . By piling these “pancakes” different three-dimensional lesion areas can be formed. The maximum lesion area by a single ablation can then single channel stratified conformable ablation be about 9 cm in diameter. So we can perform “” for large tumors; (2) No carbonization would happen on the pinpoint area; (3) The power of RF generator can be decreased. (4) The surface of dispersive electrode can be decreased.nullpancake-like lesionnullA built-in thermocouple is set at the tip of each needleClinical significance: It can monitor the temperature on the margin of the tumors during RFA treatment. This feature provides a reliable scientific basis for Evaluations of Curative Effect.null4 An injection port is made in the tip of each needleClinical significance: (1) Liquid medicine (e.g. alcohol) can be injected into the margin of the tumor Evenly through the injection port. (2) Meanwhile injection of physiological saline into the tumor during ablation treatment can enlarge the ablation area. (3) With such a method, alterable ablation shape is achievable. null5 “Bullet shape” pinpoint Clinical significance: (1) There is no cutting effect on tissue (blood vessel, nerve). (2) No pneumothorax would happen for treatment of lung tumor. “Cat ear”“Bullet shape”null6 Guiding slot of needles Clinical significance: (1) The guiding slot makes the needles arranged evenly during stretching. (2) The guiding slot makes the needles strong (the needles can be deployed within hard tissue). This feature is very important for the treatment of hepatic cancer with advanced cirrhosis. Guiding slot of needlesGuiding slot of needlesnullShort Operating Handle Clinical significance: For previously used ablation electrodes, the handle is usually longer than 14cm or 15cm. The long handle makes it inconvenient, even impossible, to locate under CT guide for fat patients. The length of handle of the conformable electrode is only 7cm, which makes it very convenient for using CT guidance. null CT Puncture Guide 8 CT Puncture Guide Available Under CT guidance, it usually takes a long time to perform aim taking. But when using WHK-3 Conformable Electrode fixed with CT Puncture Guide, the doctor can finish aim puncturing in a few minutes, thus increasing effect of the doctors and equipment greatly. nullThank You!