Radiofrequency ablation electrode needle with multi-needle-point positioning function

Abstract

The invention relates to the technical field of radiofrequency ablation, and discloses a radiofrequency ablation electrode needle with a multi-needle-point positioning function, which comprises a connecting grab handle and an extension catheter, a controller is arranged in the connecting grab handle, a positive electrode cabin and a negative electrode cabin are sequentially arranged at the far end of the extension catheter, and a push-out mechanism is arranged in the extension catheter; a plurality of anode needles are stored in the anode cabin, a plurality of cathode needles are stored in the cathode cabin, and the controller is used for controlling the push-out mechanism to convert acting objects and push the anode needles and the cathode needles of the other electrode needle group. Through the control of the controller and the cooperation of the pressure sensors of the positive electrode needles and the negative electrode needles, the positive electrode needles and the negative electrode needles are sent to the proper positions of the areas where the positive electrode needles and the negative electrode needles are located, so that the positive electrode needles and the negative electrode needles accurately cover the focus part, the coverage effect on the focus part is enhanced, and the focus part is prevented from being damaged. The radiofrequency ablation device is used for accurately performing radiofrequency ablation on a focus part and avoiding mechanical injury to blood vessels or surrounding structures or thermal injury generated during radiofrequency ablation at the same time.

Description

technical field [0001] The invention relates to the technical field of radiofrequency ablation, in particular to a radiofrequency ablation electrode needle with multiple needle tip positioning. Background technique [0002] Radio frequency is a high frequency vibration with a frequency of 150,000 vibrations per second. Under the action of high-frequency alternating current, due to the different sizes, masses, charges and moving speeds of various ions in the cell, the ions rub against each other and collide with other particles to generate biothermal effects. Due to the poor heat dissipation of the tumor, the temperature of the tumor tissue is higher than that of the adjacent normal tissue. In addition, the cancer cells are sensitive to high heat, and the high heat can kill the cancer cells without any side effects. [0003] At present, the common radiofrequency ablation electrode needle, such as CN106308927A, covers the tumor through several independently retractable multi-...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a radiofrequency ablation electrode needle with multiple needlepoint positioning, which has the advantages of accurate positioning of the electrode needle position and good coverage of lesions, and solves the problem that the artificial control of the electrode needle position is easy to cause the electrode needle position to be damaged. offset problem

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