Intracavitary lithotripter for treating upper urinary tract calculi

Abstract

The invention discloses an intracavitary lithotripter for treating upper urinary tract calculi. The lithotripter comprises an electric hammer host machine, a drill probe rod, a protective sheath, a protective sheath handle and an endoscope, wherein the electric hammer host machine is connected and fixed with the tail end of the drill probe rod through a screw on a front end interface; a sliding shaft is sleeved between the rear end of the protective sheath and the drill probe rod to ensure that the clearance distance between the protective sheath and the drill probe rod is constant; the handle at the tail end of the drill probe rod is fixed with an electric hammer switch through a clamping groove; a fixing device is sleeved in a nephroscope body, and an elastic handle on the tail part of the nephroscope body is fixed with the front end of a water inlet through the clamping groove, stretches out of a jaw of the calculus fixing device, and forms the clamping groove with the front end of the nephroscope; and the drill probe rod and the protective sheath of the lithotripter are externally embedded into an operation channel of the nephroscope. The lithotripter has the advantages of obviously shortening operation time, reducing the incidence rate of complications in perioperative period, breaking and picking large and hard complex calculi primarily, along with simple structure, convenient use and high calculi breaking efficiency.

Description

technical field [0001] The invention relates to a medical device, and more particularly to an intracavity lithotripsy device for treating upper urinary tract calculus, especially suitable for combined percutaneous nephroscopic treatment of renal calculi with a size greater than 2 cm. Background technique [0002] Percutaneous nephrolithotomy is currently a minimally invasive surgical method widely used in the treatment of large kidney stones. This technique is to establish a percutaneous channel directly leading to the renal collecting system, and insert the nephrolith under direct vision. Some patent applications for traditional intracavity lithotripsy equipment and retrieval include ultrasonic lithotripsy, pneumatic ballistic lithotripsy, holmium laser, electrohydraulic lithotripsy, etc. All kinds of crushing equipment have their own advantages and disadvantages, but the crushing efficiency is not ideal. Therefore, the new intracavitary lithotripsy equipment developed in ...

AI Technical Summary

Problems solved by technology

In clinical application, these new intracavitary combined lithotripsy devices have significantly improved the efficiency of lithotripsy, but for hard stones, the efficiency of lithotripsy is still low, especially for large and hard complex stones, the operation time is long , often requires multiple operations in stages, which increases the patient's pain and financial burden

The fundamental reason is that for hard stones, the most efficient technology for stone crushing is still pneumatic ballistic stone crushing. The combined stone crushing method cannot significantly improve the stone crushing efficiency, but only removes stones during the stone crushing process. Improve surgical efficiency

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