Double-cavity work sheath of flexible ureteroscope

Abstract

A double-cavity work sheath of a flexible ureteroscope comprises a double-cavity sheath pipe and a trumpet-shaped apparatus acceptance portion. The double-cavity sheath pipe is a flexible pipe with the length ranging from 300 mm to 500 mm, and the double-cavity sheath pipe is provided with two passageway holes, wherein one of the passageway holes serves as a main work passageway with the hole circumference ranging from 13 mm to 15 mm, and the other hole serves as a water injecting passageway with the hole circumference ranging from 3 mm to 5 mm. A far-end hole of the main work passageway of the double-cavity sheath pipe and a far-end hole of the water injecting passageway are both formed in an axial end surface of the double-cavity pipe. The small-opening end of the trumpet-shaped apparatus acceptance portion is fixedly connected with the double-cavity sheath pipe, and the trumpet-shaped apparatus acceptance portion is provided with a trumpet-shaped opening which is communicated with the main work passageway and a water hose connector which is communicated with the water injection passageway, wherein the water hose connector is arranged at the outer side wall of the apparatus acceptance portion, and the water hose connector extends out of the big-opening end of the trumpet-shaped opening. The double-cavity work sheath of the flexible ureteroscope has the advantages that the structure is simple, the price is low, the calculus removing rate is improved and medical burdens and pains of patients are reduced.

Description

technical field [0001] The invention relates to the field of urological surgery, in particular to a double-chamber working sheath of a flexible ureteroscope. Background technique [0002] Flexible ureteroscopic surgery is a minimally invasive surgery for upper urinary tract stones. Compared with traditional open or percutaneous renal approach surgery, flexible ureteroscopic surgery has the advantages of less trauma and faster recovery. It has been widely used in urological surgery middle. However, after soft ureteroscope surgery is performed on patients with upper urinary tract calculi to pulverize the stones, the crushed stone fragments remain in the patient's renal pelvis, and it is difficult to expel them quickly. A small number of larger stone fragments can pass through the stone basket equipped with the flexible scope When the equipment is collected and removed, the cost of using the stone basket is high, and the efficiency of collecting and removing the stone chips is...

AI Technical Summary

Problems solved by technology

However, after soft ureteroscope surgery is performed on patients with upper urinary tract calculi to pulverize the stones, the crushed stone fragments remain in the patient's renal pelvis, and it is difficult to expel them quickly. A small number of larger stone fragments can pass through the stone basket equipped with the flexible scope When the equipment is collected and removed, the cost of using the stone basket is high, and the efficiency of collecting and removing the stone chips is low, which increases the cost of stone removal, and most of the remaining small stone particles can only rely on the patient's own urine when urinating. The excretion of stones through urine is long and inefficient, and it is difficult to completely expel stones. The remaining stone particles in the renal pelvis are easy to form new stones, so some patients may have incomplete stone expulsion and need to be re-hospitalized for surgery or Complications such as hematuria, urinary tract infection, and renal colic are caused during the stone expulsion process, which increases the medical burden and pain of the patient

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