Continuous negative-pressure suction apparatus for ureteroscopic holmium laser lithotripsy use

Abstract

The invention provides a continuous negative-pressure suction apparatus for ureteroscopic holmium laser lithotripsy use. The continuous negative-pressure suction apparatus for ureteroscopic holmium laser lithotripsy use comprises a three-way infusion device, a liquid suction hose, a ureteral catheter, a first sealing cap, and a second sealing cap; one end of the three-way infusion device is sleeved with the liquid suction hose; the ureteral catheter is fixedly mounted at one end of the three-way infusion device, and communicates with the three-way infusion device; and a junction of the three-way infusion device and the ureteral catheter is sleeved with the first sealing cap. The continuous negative-pressure suction apparatus for ureteroscopic holmium laser lithotripsy use provided by the invention has the advantages of being low in cost, convenient to use, and capable of maintaining good field of view, improving lithotripsy efficiency, shortening operation time, preventing stone from moving up, increasing stone clearance rate, reducing renal pelvis pressure, reducing risk of infection, decreasing possibility of falling of the liquid suction hose due to pulling of the liquid suctionhose, ensuring smooth conduction of the operation and the like.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a continuous negative pressure suction device for ureteroscopic holmium laser lithotripsy. Background technique [0002] Ureteroscopic holmium laser lithotripsy is the first-line treatment for ureteral calculi because of its definite effect, quick recovery and few complications. The movement of stones to the kidney during the operation is one of the main reasons for the failure of ureteroscopic holmium laser lithotripsy, and it is also an important hidden danger of medical disputes. It has been reported in the literature that the incidence of calculi moving up during ureteroscopic holmium laser lithotripsy for lower ureteral stones is 3% to 15%, while the incidence of upper ureteral stones is as high as 28% to 48%. The upward movement of the stones leads to the failure of the operation or changes to the operation method, such as soft mirror lithotripsy or percutaneous nephrosco...

AI Technical Summary

Problems solved by technology

However, during the catheterization process, the stones may move up, and the gel may also be washed away during the lithotripsy process, affecting the surgical field of view and the anti-blocking effect

Moreover, the above-mentioned devices are all disposable products, and the price is high

[0004] There are also studies suggesting that the use of ureteric sheaths in ureteroscopic lithotripsy is beneficial to the entry and exit of ureteroscopes, making the field of vision clearer, reducing renal pelvis pressure, and improving the stone-clearing rate. Urinary extravasation or even ureteral stricture, and some patients cannot be successfully sheathed, so it is rarely used clinically

[0005] In addition, insufficient flushing fluid perfusion during laser lithotripsy causes excessive local temperature of the ureter, causing thermal damage to the ureter, which can easily lead to ureteral stenosis in the later stage; excessive flushing fluid perfusion increases renal pelvis pressure and the probability of intraoperative and postoperative infection, and even renal rupture

[0006] How to effectively solve the problem of upward movement of stones in ureteroscopic holmium laser lithotripsy, improve stone clearance rate, reduce intraoperative renal pelvis pressure, reduce postoperative infection, and prevent late ureteral stenosis has always been a focus of attention and research on urology platforms at home and abroad. At present, at home and abroad, the method to solve the upward movement of stones in ureteroscopic holmium laser lithotripsy is mainly to use a blocking device, which has a good application effect, but the cost is high, and it is difficult to routinely use it and promote it in primary hospitals

During the traditional ureteroscopic holmium laser lithotripsy, the local temperature is too high due to insufficient irrigation fluid perfusion, which can easily cause thermal injury to the ureter. Excessive irrigation fluid perfusion increases the pressure of the renal pelvis and the risk of infection. Mucosal bleeding and lithotripsy powder affect the operation field and lithotripsy efficiency , so it is necessary to provide a continuous negative pressure suction device for ureteroscopic holmium laser lithotripsy to solve the above technical problems

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