Flexible ureteroscope sheath set with rotatable inner sheath

Abstract

The invention discloses a flexible ureteroscope sheath set with a rotatable inner sheath. The flexible ureteroscope sheath set comprises an outer sheath, a diameter-variable passage is arranged at the non-working end of the outer sheath, a negative pressure suction port is arranged on the side portion of the diameter-variable passage, the end of the diameter-variable passage is fixedly connected with a sleeve member which is connected with a rotating connector capable of rotating by 360 degrees, the rotating connector is connected with the inner sheath which is arranged in the outer sheath, and the working end of the inner sheath extends out of that of the outer sheath by set length while the non-working end of the same is provided with a perfusion flushing port; a water outlet is arranged on the end portion or the side portion of the working end of the inner sheath. The inner sheath is connected with the outer sheath through the rotating connector, the rotating connector can drive the inner sheath to synchronously rotate by 360 degrees to form variable and complex vortex in a kidney during inward perfusion of the inner sheath, and quick and effective negative-pressure suction-out of gravel is facilitated.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a flexible ureteroscope sheath set with a rotatable inner sheath. Background technique [0002] Renal calculi are caused by the abnormal accumulation of some crystalline substances (such as calcium, oxalic acid, uric acid, cystine, etc.) and organic matrix (such as matrix A, acidic mucopolysaccharide, etc.) in the kidney, and are common diseases of the urinary system , frequently-occurring disease, 90% contain calcium, and calcium oxalate stone is the most common among them. If kidney stones cannot be treated properly, it will easily lead to inflammation and infection. In severe cases, hydronephrosis, uremia and even cancer will occur. When kidney stones are formed, they are mostly located in the renal pelvis or calices, and can be discharged into the ureter and bladder. Almost all ureteral stones come from the kidney Therefore, if kidney stones cannot be treated in ...

AI Technical Summary

Problems solved by technology

[0006] 3. Traditional open surgical treatment; in this way, according to the condition of the patient’s kidney stones, the kidney is cut open to remove the stone or the kidney is partially resected / totally resected; this surgical method has a large trauma, a high rate of residual stones, and a slow postoperative recovery , may also cause a variety of complications

[0007] 4. Percutaneous nephrolithotomy; this method needs to puncture the skin from the waist to establish a channel, and directly crush the stones for kidney stones. It is currently the main method for treating stones larger than 2cm. This method has obvious progress compared with traditional open surgery , but this method still creates wounds in the human body, and the incidence of serious complications such as renal hemorrhage and septic shock is still high

[0009] The inventor found that when the existing soft mirror sheath is used for negative pressure suction of stone chips after kidney stone (more than 2cm) lithotripsy, the negative pressure suction tube is prone to blockage, and because the location of the stone is scattered, the stone cannot be quickly and effectively Aspiration requires multi-stage surgery, which undoubtedly increases the physical and economic burden of the patient

Images