Flexible ureteroscope guide sheath

Abstract

The invention relates to a flexible ureteroscope guide sheath. The flexible ureteroscope guide sheath solves the problem that existing flexible ureteroscope guide sheaths cannot achieve pressurized perfusion of normal saline to result in unsmooth internal pressure relief of pelvis and unsmooth blood clot discharge. The flexible ureteroscope guide sheath is composed of a front sheath body and a rear sheath body; the front portion of the front sheath body is a hollow straight pipe, the rear end of the straight pipe is connected with a bowl-shaped unit with a horn-shaped opening, and the center of the bottom of the bowl-shaped unit is communicated with the straight pipe; the rear sheath body is a case with an opening at the front end, the front end of the rear sheath body is threadedly connected with the rear end of the bowl-shaped unit, the rear end surface of the rear sheath body is provided with a flexible ureteroscope inlet for inletting a flexible ureteroscope, one side of the rear sheath body is provided with a water inlet connected with perfusion solution, the other side of the rear sheath body is provided with a water outlet connected with a negative pressure suction device, and the water inlet and the water outlet are provided with check valves. According to the flexible ureteroscope guide sheath, a cavity communicated with the straight pipe is arranged at the rear end, both sides of the cavity are provided with a water inlet channel and a water outlet channel respectively, so that normal saline can be infused to ensure operation field, and negative pressure suction can be performed to reduce internal pressure of the flexible ureteroscope and the pelvis and further to ensure operation safety.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a flexible ureteroscope guide sheath for flexible ureteroscope surgery. The guide sheath has the functions of negative pressure suction and irrigation. Background technique [0002] In clinical medicine, flexible ureteroscope lithotripsy requires a guide sheath to establish a surgical access to assist the endoscope and other instruments to enter the urinary tract, and it provides a continuous operation channel, which can protect the ureter and reduce trauma when instruments are exchanged repeatedly possibility, while protecting precision instruments and soft mirrors from damage. However, during the operation, normal saline needs to be perfused under pressure to keep the field of view of the ureteroscope clear; a large amount of flushing water enters the renal pelvis during the operation, and the flexible ureteroscope has a small operating space for the expansion of the oute...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the current flexible ureteroscope guide sheath cannot be pressurized and perfused with normal saline, and the pressure relief in the renal pelvis is not smooth, and the blood clot is not discharged smoothly, and provides a flexible ureteroscope guide sheath that can realize Pressurized saline perfusion function and negative pressure suction function simplify surgical operation and ensure surgical safety

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