A water injection device for flexible ureteroscope

Abstract

The invention provides a flexible ureteroscope water injection device comprising a water inlet tube, a water outlet tube, a large-quantity water inlet tube, a small-quantity water inlet tube, a small-quantity water outlet tube, a large-quantity water outlet tube, a water quantity adjusting valve and a pressure sensing valve. Inlets of the small-quantity water inlet tube and the large-quantity water inlet tube are connected with an outlet of the water inlet pipe; and outlets of the small-quantity water outlet tube and the large-quantity water outlet tube are connected with an inlet of the water outlet tube; the diameters of the water inlet tube, the water outlet tube, the large-quantity water inlet tube and the large-quantity water outlet tube are the same; the diameters of the small-quantity water inlet tube and the small-quantity water outlet tube are the same; the diameter of the small-quantity water inlet tube is half that of the large-quantity water inlet pipe; the small-quantity water outlet tube is provided with the pressure sensing valve. A rotary disc of the water quantity adjusting valve can be rotated to make the small-quantity water inlet tube and the small-quantity water outlet tube communicate or make the large-quantity water inlet tube and the large-quantity water outlet tube communicate, or the valve is closed. With two water injection channels, sufficient water injection pressure is guaranteed for obstacle passing of a flexible ureteroscope and excessive inner pressure of the pelvis is avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a water injection device for a flexible ureteroscope. Background technique [0002] Flexible ureteroscopy is an emerging technology. Flexible ureteroscopy combined with holmium laser is especially suitable for the treatment of upper urinary calculi and has been widely used in clinical practice. The advantages of this technology are reflected in the relatively non-invasive lithotripsy through the natural cavity, high stone removal rate, and easy operation. In flexible ureteroscopy surgery, in order to obtain a good view without increasing the pressure in the renal pelvis due to excessive water injection and increase the risk of kidney rupture and infection, it is often necessary to adjust the water injection volume frequently and precisely, such as when the flexible ureteroscope crosses the ureter. In narrow or tortuous sections, a large amount of water injection is requi...

AI Technical Summary

Problems solved by technology

This frequent and precise adjustment of the water injection volume makes it difficult to meet the water supply requirements of a simple water pump.

Therefore, at present, most flexible ureteroscopic surgery adopts the method of manually fetching water, but manual fetching requires close cooperation between the assistant and the surgeon, and requires a high degree of proficiency of the assistant, often encountering the problem that the amount of water injection does not change in time, and at the same time increases The number of surgical personnel increases labor costs

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