Ureteral catheter with plugging device

Abstract

The invention provides a ureteral catheter with a plugging device. The ureteral catheter with the plugging device comprises a catheter body, the plugging device and a triggering device, the plugging device is installed at the tail end of the catheter body, the triggering device is connected with the plugging device, and the triggering device is used for controlling unfolding and folding of the plugging device; when the plugging device is folded, the plugging device is folded in the direction close to the catheter body so that the catheter body can be placed in the ureter of a patient. When the plugging device is unfolded, the plugging device is unfolded in the direction away from the catheter body, a blocking net capable of plugging the ureter of the patient is formed, the plugging device is additionally arranged on the catheter body, the plugging device is triggered to be folded and unfolded through the triggering device, and the blocking net can block the ureter of the patient while the catheter body is arranged in the ureter of the patient in a smooth-in mode. And the ureter of the patient can be effectively blocked in the lithotripsy operation process.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a ureteral catheter with a blocking device. Background technique [0002] Urinary calculi are common diseases of the urinary system. Stones can be found anywhere in the kidney, bladder, ureter, and urethra, but kidney and ureteral stones are the most common. Percutaneous nephrolithotomy has high lithotripsy efficiency, small surgical trauma and quick postoperative recovery, and has become the main treatment for kidney stones. The rate of stone drift also gradually increased, especially a part of the debris drifted toward the ureter and fell into the patient's ureter. At this time, when the lithotripsy descends beyond the upper ureter to the middle or lower ureter, it is very difficult to remove it by percutaneous nephroscopy. Usually, the patient needs to be placed in the lithotomy position for ureteroscopic lithotripsy to deal with the descending lithotripsy. It incre...

AI Technical Summary

Problems solved by technology

At this time, when the broken stone descends beyond the upper ureter to the middle or lower ureter, it is very difficult to remove it through the percutaneous nephroscope. Usually, the patient needs to be placed in the lithotomy position again for ureteroscopic lithotomy to deal with the descending broken stone. This increases the difficulty of the operation, prolongs the operation time, and increases the risk of related complications such as stone street after operation; in addition, the stones descending to the ureter are often difficult to detect under the nephroscope, which may easily lead to missed operations, resulting in residual stones after surgery into the ureter, reducing the stone-free rate and surgical effect, and increasing the risk of reoperation

[0003] In addition, during the percutaneous nephrolithotomy operation, the operator will extend a ureteral catheter into the patient's ureter to draw water retrogradely through the ureter to cause artificial hydronephrosis to guide nephrotomy. , the diameter of the ureteral catheter used to fetch water is very small, and basically does not have the ability to prevent stones from falling into the ureter during the operation

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