Urethral stricture without pseudothrax directional plasma resection

Abstract

The invention discloses a false-path-free urethrostenosis orientation plasma electric knife. The electric knife comprises a cutting electrode, a circuit electrode and a conducting wire pipe, wherein a ceramic insulation pipe is arranged between the cutting electrode and the circuit electrode, an arc ceramic protection sleeve is arranged on one end of the ceramic insulation pipe, and the arc ceramic protection sleeve covers one side of the cutting electrode. The cutting electrode is insulated to normal tissues in the urethra of the human body to form an electrode orientation working surface, the damage of the cutting electrode on the normal tissue can be effectively avoided, the electric knife can more smoothly reach the focus tissue of the disease, a false path is prevented from forming in the urethra, and the risk of recurrence urethrostenosis can be lowered.

Description

technical field [0001] The invention belongs to the field of medical instruments and relates to a plasma electric cutter for clinical urethral stricture operation. Background technique [0002] Male urethral stricture is a common clinical disease. Urethral stricture can lead to infection, bladder stones, fistula formation, sepsis, and even renal failure, seriously affecting the quality of life of patients. Non-surgical treatment methods include urethral dilatation, etc. For patients who fail non-surgical treatment, surgical treatment is used. Surgical treatment is commonly used at present. The traditional open surgery has caused great damage to the normal physiological structure of the urethra. attention. [0003] A kind of minimally invasive surgical instrument commonly used at present is an ion electric cutter, which mainly includes a cutting electrode, a return electrode and a wire conduit, and a ceramic insulating tube is arranged between the cutting electrode and the ...

AI Technical Summary

Problems solved by technology

[0004] Although the existing plasma electric cutter for urethral stricture surgery has been developed to a fairly high level, there are still the following defects: 1) the cutting electrode is positioned at the top of the electric cutter and is fully exposed outside, cutting the lesion tissue in the urethra 1. During ablation, the cutting electrode will also cause 360-degree damage to the normal tissue around the urethra; 2) Since the cutting electrode is cylindrical and has an acute angle at the top, when the electric knife passes through the narrow opening, it is easy to pass through the normal tissue to form a false 3) Before surgery with electric knife, it is usually necessary to use a thinner guide wire to pass through the urethra to reach the surgical site, and then under the guidance of the guide wire, The electric cutting knife is delivered to the surgical site through the urethra, and the step of passing the electric cutting knife requires very precise operation, which increases the difficulty of the operation. In addition, the cutting electrode may come into contact with the guide wire, causing the guide wire to burn out or even break

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