A new hook-shaped electrode for transurethral resection of bladder tumors

Abstract

The invention provides a novel hook-shaped electrode for transurethral resection of bladder tumors, which includes a urethral catheter with a smooth appearance and no sharp protruding structure. The inside of the urethral catheter is provided with a speculum tube and an electrode catheter. There is an indwelling device sleeved on the outer wall of the electrode catheter inside, and the electrode catheter and the indwelling device are slidably connected through the slideway; hollow bearings are symmetrically fixed at both ends of the electrode catheter, and the two groups of The inside of the bearing runs through a cable conduit, and one end of the cable conduit inserted into the bladder is connected with a hook-shaped electric cutting electrode; the angle and direction of the electric cutting electrode can be rotated and adjusted conveniently, and the urethral catheter is smoothly attached to the urethra during the adjustment process. Reduce the damage of the catheter to the urethral wall; the electric resection electrode has a hook-shaped structure, which reduces the contact surface with the tumor, and reduces the burn damage to the inner wall of the bladder during electric resection, and the hook end of the hook-shaped structure can lift and tear the tumor, and the tumor It is easy to use because it is separated from the inner wall of the bladder.

Description

technical field [0001] The invention belongs to the technical field of tumor treatment equipment, and in particular relates to a novel hook-shaped electrode for transurethral resection of bladder tumors. Background technique [0002] Clinically, bladder tumor is a common disease of the urinary system, and its incidence ranks in the forefront of urinary system tumors. The main treatment method is surgery or surgery combined with postoperative bladder infusion chemotherapy. Due to the high recurrence rate of bladder tumors, reoperation or multiple operations are often required, while open surgery has relatively large trauma, slow postoperative recovery, and poor reproducibility, so it has been gradually eliminated. Transurethral resection of bladder tumor (Transurethral resection of bladder tumor, TURBT) has the advantages of small trauma, fast postoperative recovery, strong reproducibility, almost no operative mortality, and can preserve bladder voiding function. It has gradu...

AI Technical Summary

Problems solved by technology

[0003] 1. The existing urethral bladder tumor resection electrode needs to change the angle direction of the resection electrode when performing tumor resection. The conventional operation is to rotate the urethral catheter to change the angle direction of the resection electrode. In actual operation, this operation is easy As a result, the urethra is damaged by the friction of the urethral catheter, and the inner wall of the urethra is not easy to recover after being damaged, and complications such as inflammation are prone to occur;

[0004] 2. Most of the existing urethral bladder tumor resection electrodes are ring-shaped electrodes, which have a large contact surface with the tumor and are easy to operate, but the damage to the inner wall of the bladder also increases, resulting in large burns on the tumor resection surface and easy damage Papillary tumors of the bladder cause massive bleeding from the underlying arteries, which is not conducive to the observation of the cut surface during the operation and postoperative recovery;

[0005] 3. Most of the existing urethral bladder tumor resection electrodes are ring-shaped electrodes, which have a large contact surface with the tumor. When resecting bleeding papillary tumors, it is easy to damage the primary artery of the bladder papillary tumor and cause a large amount of bleeding, which comes from the muscle layer. Arterial hemorrhage is often difficult to electrocoagulate, and it is not conducive to observe hemostasis in the surgical field after the formation of congestion, thus prolonging the operation time and increasing the possibility of blood clot accumulation and shock complications caused by it;

[0006] 4. The existing single-structure resection electrode cannot meet the needs of urethral bladder tumor resection. It is often necessary to replace the structure of the resection electrode to pull the entire device away from the urethra, replace the new resection electrode, and re-intubate the urethra. bigger

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