Switching device for composite radio frequency and irreversible electroporation

Abstract

The invention discloses a switching device for composite radio frequency and irreversible electroporation. The switching device for the composite radio frequency and the irreversible electroporation comprises an alternating current and direct current switching module and a current sensor switching module and is used for outputting high-voltage direct current pulses for irreversible electroporation and radio frequency sine waves output by radio frequency ablation to two external electrode interfaces in a time-sharing switching mode, the switching device is respectively connected with the output of a DCAC inverter circuit of the radiofrequency ablation module, a high-voltage direct current output of a irreversible electroporation module, a control interface of a main control board and a electrode interface. Compared with the prior art, ablation working modes can be switched according to needs, irreversible electroporation ablation treatment is carried out, and needle passage ablation can be carried out through low-power ablation mode output when irreversible electroporation ablation treatment is finished. The switching device can be used for common focuses as a radiofrequency ablation host. The treatment effectiveness of the irreversible electroporation equipment is improved, a compound treatment mode of irreversible electroporation and radiofrequency ablation can be carried out on some complex cases, and the clinical application range of the device is greatly widened.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a switching device for combined radio frequency and irreversible electroporation. Background technique [0002] Radiofrequency (RFA) is a commonly used tumor ablation method. This approach generates heat in the target tissue to induce coagulative cell necrosis, but RFA is limited by tumor location and cannot be used in heat-sensitive structures such as the pancreas. Irreversible electroporation ablation is a new ablation method in the field of tumor ablation. Irreversible electroporation ablation uses high-voltage steep pulses to act on the lesion, causing nano-scale permanent perforation of the cell membrane, thereby leading to apoptosis of tumor cells. Because the therapy is less damaging to connective tissue structures and blood vessels, it can ablate tumors near heat-sensitive structures and blood vessels. However, the use conditions of irreversible electroporation...

AI Technical Summary

Problems solved by technology

The current irreversible electroporation ablation equipment generally does not have a dedicated needle tract ablation function, and there are risks of bleeding and implantation during surgery

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