Plasma bipolar resectoscope and using method thereof

Abstract

The invention provides a plasma bipolar resectoscope and a using method thereof. The plasma bipolar resectoscope comprises a working handle, an inner sheath assembly and an outer sheath assembly. The working handle is connected with the inner sheath assembly, and the inner sheath assembly is connected with the outer sheath assembly. The plasma bipolar resectoscope is characterized in that a unipolar electric resection ring is further arranged and connected with the working handle in a matched mode; the unipolar electric resection ring is composed of a cutting ring body and an electric resection ring peripheral structure; the cutting ring body communicates with a positive pole of a mainframe power source through a clamping head in the electric resection ring peripheral structure; and a working current loop is constituted by the positive pole of the mainframe power source, the unipolar electric resection ring, normal saline, the outer sheath assembly, the inner sheath assembly, a pole plug on the working handle and a negative pole of the mainframe power source. The invention further provides a using method of the plasma bipolar resectoscope. The plasma bipolar resectoscope is concise in structure, low in cost, high in reliability and safety, capable of increasing the water outlet amount and easy and convenient to mount and demount, and a sliding block assembly is good in airtightness.

Description

technical field [0001] The application relates to a medical surgical instrument, in particular to a plasma bipolar resectoscope and its usage method. Background technique [0002] The gap between the outer sheath tube and the inner sheath tube at the front end of the resectoscope in the prior art is very small, resulting in almost no water output from the front hole during surgery. Clinically, the insertion depth of the resectoscope must be increased, and the water outlet completely depends on the water outlet hole at the rear end. The difficulty of surgical operation increases, which affects clinical use. The prior art bipolar electric cutting ring (both poles are made on the electrode) has a complex structure, high processing cost, and unstable operation. When the monopolar resectoscope in the prior art is working, the human body needs to be connected to the negative plate, and the return current has to pass through the human body and the negative plate to return to the h...

AI Technical Summary

Problems solved by technology

[0002] The gap between the outer sheath tube and the inner sheath tube at the front end of the resectoscope in the prior art is very small, resulting in almost no water outflow from the front end hole during the operation. Clinically, the insertion depth of the resectoscope must be increased, and the water outlet completely depends on the water outlet hole at the rear end. Increased difficulty of surgical operation, affecting clinical use

The structure of the existing bipolar electric cutting ring (both poles are made on the electrode) is relatively complicated, the processing cost is high, and the work is not stable enough

When the monopolar resectoscope in the prior art is working, the human body needs to be connected to the negative plate, and the return current has to pass through the human body and the negative plate to return to the host. There is a risk of overheating and burns due to poor contact between the negative plate and the human body

In the prior art, the seal between the inner sheath and the outer sheath is a tapered surface fit seal, which is costly and not easy to install

In the prior art, the mirror base and the endoscope usually have a lock ring structure. First insert the endoscope into the mirror channel, and then turn the lock ring to lock the mirror on the mirror base. Locking action is required, and the steps are many and cumbersome. , the operation is not convenient enough

This application is improved on the basis of the patent application number 201611160402.3, titled: "Bipolar resectoscope assembly and method for cooperating its electrodes with the slider". risk of short circuit

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