Bipolar resectoscope assembly and method for matching electrodes and slider

Abstract

The invention relates to a bipolar resectoscope assembly and a cooperation method of the electrode of the bipolar resectoscope assembly with a sliding block, and is mainly applicable to urinary surgical operation. The bipolar resectoscope assembly disclosed by the invention is characterized in that a locking device is arranged at the rear end of an outer sheath body, and comprises locking rings, an outer sheath body connector, a steel ball, compression springs and the like; a steel ball groove matched with the steel ball is formed in an inner sheath body; a sliding block assembly and a locking ring assembly are arranged on an electroexcision handle; the sliding block assembly comprises the sliding block, a guide positioning block, an elastic clamp push rod, an elastic clamp and the like; the locking ring assembly comprises the locking rings, locking ring connectors, wave springs and retaining snap rings; the electrode adopts a bipolar electroexcision ring. The electrode of the bipolar resectoscope assembly is matched with the sliding block by the method of enabling the ends of tail needle tubes to respectively penetrate through two handle small holes of a handle body, and then respectively inserting the ends into two sliding block holes in the sliding block assembly till the tip end of the elastic clamp is clamped in clamping notches of special section steel tubes. The bipolar resectoscope assembly disclosed by the invention is reasonable and simple in structural design, low in cost, and easy and reliable to use. The method is safe and effective.

Description

technical field [0001] The invention relates to a plasma bipolar resectoscope, in particular to a bipolar resectoscope assembly and a method for cooperating electrodes and sliders, which belongs to the field of medical technology and is mainly suitable for human urological surgery. Background technique [0002] Resectoscope is divided into monopolar resectoscope and bipolar resectoscope, mainly through urethral surgery to treat benign prostatic hyperplasia, and its resection includes segmentation of human tissue and hemostasis, that is, coagulation / dehydration, in order to remove hyperplasia and control and reduce bleeding . [0003] When the monopolar resectoscope is working, the negative plate needs to be in contact with the human body. Glucose is used as the flushing medium during the operation. Diabetics are prone to TURP syndrome, that is, water intoxication, and the required power is large, and the heat diffusion range is large. Tissue damage is greater. Although the...

AI Technical Summary

Problems solved by technology

[0003] When the monopolar resectoscope is working, the negative plate needs to be in contact with the human body. Glucose is used as the flushing medium during the operation. Diabetics are prone to TURP syndrome, that is, water intoxication, and the required power is large, and the heat diffusion range is large. greater tissue damage

Although there are bipolar resectoscopes at present, the structural design of the overall components is not reasonable enough, and the clinical use effect is not good

[0004] Chinese Patent Application No. 200920054446.7 discloses a "plasma bipolar resectoscope". The sheath needs to be inserted into the outer sheath with an inclined plane, which is laborious; when dismounting, it is necessary to press the button, but the contact area between the button and the hand is small and the inner spring force of the button is relatively large, so it is laborious to disassemble; moreover, it uses a common lock ring, and the sealing performance is unstable. The starting and stopping position of the locking ring is easy to deflect, and if it is accidentally touched during the operation, the locking will fail; in addition, the return electrode is on the pillar of the electric cutting ring, and it is located in the sheath during operation. The contact of the sheath makes the current pass through the human body, which may stimulate the obturator nerve. At the same time, urethral stricture is prone to occur after surgery; finally, the main body of the handle is sealed with the bipolar cutting ring, which is realized by the sealing sleeve placed on the bipolar cutting ring However, its structure has the following disadvantages: 1. The fit gap is not adjustable, the size of the parts is high, and the process is complicated; 2. A groove must be opened in the handle body to place the sealing sleeve, resulting in the sealing surface of the outer cone where the handle body and the inner sheath cooperate. There is a gap. The outer surface of the sealing sleeve placed in the gap and the inner cone sealing surface of the inner sheath have high requirements for cooperation, and poor sealing is prone to occur.

[0005] Chinese patent application number 201410032725.9 discloses an "electrosurgical generator and system". The technical problem to be solved is the shortcoming of high-frequency electric cutting to cut tissue by generating a large amount of heat, but the structure of the application is a commonly used plasma electric cutting machine. cutting system, which works in physiological saline, generates plasma, and breaks the molecular bonds of human tissue cells through plasma to achieve the purpose of separating human tissue; although it has been proved by a series of experiments and data that it has less damage to human tissue , but because the cutting electrode and the return electrode are not on the same pillar, it is not a bipolar resectoscope in the true sense. During the operation, the current of the electrode may pass through the human body and stimulate the obturator nerve. At the same time, the incidence of postoperative urethral stricture higher

[0006] Chinese Patent Application No. 200920054194.8 discloses a "plasma bipolar resectoscope electrode", one of which is a ring, and the other is an outer tube. The cutting and electrocoagulation are both completed with the ring; The area is small, and it is often necessary to repeatedly coagulate the bleeding site, and the hemostasis speed is slow; moreover, the integral structural design of the bipolar electrocution ring and the high-frequency line will be scrapped as a whole when it is scrapped, and the use cost is high; in addition , the connection between the bipolar electric cutting ring and the high-frequency line needs to be injection molded, and the manufacturing cost is high; the single guide sleeve structure is not stable enough to use

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