Combined structure of ureteroscope catheter and ureter sheath

Abstract

The invention discloses a combined structure of a ureteroscope catheter and a ureter sheath. The combined structure comprises a catheter sheath and a catheter which is coaxially inserted into the catheter sheath and can move front and back in the axial direction of the catheter sheath, a calculus and liquid discharging connector is connected to the side part of the catheter sheath, one end of thecatheter is coaxially fixed into a catheter handle, and a water inlet and instrument channel is formed in the catheter in the axial direction. A water inlet and instrument connector communicating withthe water inlet and instrument channel is arranged on the catheter handle, a catheter cap is fixed at the other end of the catheter, and a guide structure which communicates with the water inlet andinstrument channel and can enable water entering the water inlet and instrument channel to flush and drain towards one side of the catheter handle is arranged in the catheter cap. After sheathing, theureter sheath can be used as a surgical instrument and penetrates into an endoscope in cooperation with a ureteroscope, calculus breaking and discharging operation is performed in cooperation with holmium laser and other instruments through the water inlet and instrument channel connector, and fine calculi fall off from an affected part under the action of a lateral flushing channel of the catheter cap and a lateral water outlet of the catheter cap. The calculi are discharged along with return water through a small arc tube sheath section of a special-shaped sheath tube.

Description

technical field [0001] The invention relates to the technical field of urological surgery equipment, in particular to a combined structure of a ureteroscope catheter and a ureteral sheath. Background technique [0002] In flexible ureteroscopic surgery, the flexible ureteroscope can enter the body through the urethra to observe the lesion and can cooperate with surgical instruments to perform visual surgery in the body. Clinical internal examination and visual surgical treatment require endoscopes with clear images to help doctors improve the accuracy of diagnosis. In the existing flexible ureteroscopic surgery, the sheathing dilation tube cooperates with the ureteral sheath for sheathing operation, and then the ureteroscopic catheter is inserted into the ureteral sheath to treat the affected area. The crushed stones need to be excreted through the ureteric sheath. At this time, the ureteroscope catheter needs to be withdrawn to operate. However, due to the withdrawal of th...

AI Technical Summary

Problems solved by technology

In the existing flexible ureteroscopic surgery, the sheathing dilation tube cooperates with the ureteral sheath for sheathing operation, and then the ureteroscopic catheter is inserted into the ureteral sheath to treat the affected area. The crushed stones need to be excreted through the ureteric sheath. At this time, the ureteroscope catheter needs to be withdrawn to operate. However, due to the withdrawal of the ureteroscope catheter, the discharge of the crushed stones cannot be observed, and the broken stones cannot be completely discharged from the body at one time. To ensure the effect of the operation, it is necessary to insert the ureteroscopic catheter multiple times for observation or treatment. This repeated operation of inserting the ureteroscopic catheter increases the pain of the patient, and it is also easy to cause damage to human organs

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