Bipolar radio frequency knife

Abstract

The invention relates to a dipolar radio frequency for solving the problem of easy scalding skin, inconvenient usage and worse effect of treatment in present technology. Wherein, an electrode plate (B) is mounted inside the electrode chamber; the die carrier has a affusion hole (B) connected to a inner tube which is through with the electrode plate (b); a inner insulating coating is arranged outside the inner tube; a water outlet is arranged on the end of outer tube; the ends of outer and inner tubes are connected to each other via the inter-electrode insulating tube; a tri-ensiform needle is mounted on the inter-electrode insulating tube; and a conductive slice is arranged between the end of inner tube and the tri-ensiform needle. Said invention can centralize the current intensity in high frequency only in the target area, to make the thermal efficiency of electric field reach highest, so the tumour can be all covered and inactivated while the ablation range of tumour can be increased, the dangerous of scalding the skin of patient is deracinated and the problem that the unstable treating effect coursed by the amount of the impedance of patient body can be avoided.

Description

Technical field [0001] The invention relates to medical equipment, in particular to a bipolar radio frequency knife used for minimally invasive ablation of human tumors. Background technique [0002] Radio frequency technology has been used in clinics for decades. Studies have shown that high frequency currents above 100KHz are absolutely safe for the human body and will not cause nerve stimulation. The use of high frequency currents for treatment is usually painless. The existing single-stage radio frequency telescopic knife includes a mold base, a water injection port and a tubular electrode formed integrally with the mold base, and a catheter connected to the tubular electrode and the water injection port is fixed in the mold base, and the outer surface of the catheter is coated with Teflon insulation layer, the end of the catheter is fixed with a triangular needle, and there is a water outlet hole on the needle. When in use, the water-injectable needle will be percutaneously ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems in the prior art that the neutral pole plate is easy to burn the skin, and that it is inconvenient to use two monopolar radio frequency knives at the same time, and the treatment effect is poor. Bipolar radiofrequency knife with scalding hazard and increased tumor ablation range

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