Isolated human body impedance detection circuit and detection method thereof

Abstract

The invention discloses an isolated human body impedance detection circuit and a detection method thereof. The isolated human body impedance detection circuit comprises a pulse generator, a data processing unit, a data display unit, one or more treatment electrodes, and one channel or two impedance acquisition units. The output end of the pulse generator is connected to the input end of the treatment electrode, an acquisition input of the impedance acquisition unit is also respectively connected to the output of the treatment electrode, and the acquisition output of the impedance acquisition unit is connected to the input of the data processing unit. The invention also discloses a detection method, which is characterized in that a voltage trigger signal and a current trigger signal are obtained through one or more voltage detection electrodes and detection points where the current detection electrode contacts the human body; the voltage trigger signal and the current trigger signal arerespectively pre-processed, and then sent to the data processing unit for calculation. The isolated human body impedance detection circuit can perform human body impedance detection, guarantees the effect of electroporation, can achieves the effect of monitoring ablation in real time, and reduces the volume and weight of the detection equipment circuit.

Description

technical field [0001] The invention belongs to the technical field of human body impedance measurement, and in particular relates to an isolated human body impedance detection circuit and a detection method. Background technique [0002] Tumor ablation therapy technology refers to the extremely precise puncture of radio frequency, microwave, freezing, laser, electric field and other energies to the tumor target area under the guidance of images, and implements precise minimally invasive ablation to inactivate tumors in situ. Operation. Thermal ablation destroys tumor cells by heating or freezing tissue. At present, physical ablation techniques widely used in clinical practice include argon-helium knife cryoablation, radiofrequency, microwave and laser thermal ablation, etc. Although these ablation techniques have exact curative effects and outstanding advantages, their main disadvantage is that the damage to tissues is non-selective, that is, in the ablation zone, except ...

AI Technical Summary

Problems solved by technology

Since the impedance of biological tissue is constantly changing with the treatment process, the impedance between the treatment electrodes can be reduced to 60Ω, and the safety of directly measuring the impedance of the human body is low, that is to say, if a short-circuit fault occurs, all the energy will be released to the patient and have catastrophic consequences

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