What is the biggest headache for doctors in the treatment of urinary stones (kidney stones, ureteral stones, bladder stones, urethral stones)? Why? Because the stone’s jumping and shifting will significantly increase the difficulty of powdering, increase the difficulty of treatment, increase the hospitalization time, and increase the cost of surgery! Conventional lithotripsy, “stone displacement” is the problem! Holmium laser lithotripsy has long been a problem for urologic lithotripsy. When ureteroscopy or percutaneous nephrolithotomy is combined with Holmium laser lithotripsy, the incidence of stone migration is 4~40%. Why? Because holmium laser acts on water during lithotripsy, the water absorbs heat and produces microbubbles, which burst on the surface of stones, and at the moment of bursting, the stones burst in all directions and even fly around with strong airflow, thus forming the contradiction of laser lithotripsy: “displacement” and “crushing”. “This phenomenon has been observed in ureteroscopic surgery. This phenomenon is especially common in ureteroscopic surgery, where the doctor has to chase a small stone stuck in the ureter, and if the stone escapes back to the renal pelvis and calyx, he has to change the soft lens to continue the pursuit. …… In addition, the traditional holmium laser’s lithotripsy efficiency is low, and when it comes to some hard and large stones, it is like “ants pecking”, and it takes half a day’s effort to “nibble” off such a small piece, and you have to face the problem of changing the surgical method and multiple times of operation. It takes half a day’s effort to “nibble” off such a small piece, and you have to face the trouble of changing the surgical method and entering the lens several times, which invariably increases the risk of postoperative complications and the economic burden of the patient. In-situ lithotripsy, no displacement, more efficient! High-power holmium laser solves the two major problems of traditional lithotripsy: “stone displacement” and “low efficiency”. Segmented holmium laser. The first segment of low-energy laser generates microbubbles, separating water bodies and forming a relatively waterless “microbubble boulevard”, which does not generate a large push force to move the stone body (what does it mean?). That is, the stone “can not run” ah; the second section of high-energy laser along this “micro-bubble avenue” directly on the stone body, greatly enhancing the intensity of stone crushing; next, is to witness the miracle of the moment! The dragging force generated by the “microbubble avenue” in the process of collapsing and the pushing force generated by the second high-energy laser cancel each other out, easily realizing in-situ lithotripsy! bHigh-power holmium laser. The high power of 120 watts (double that of the commonly used holmium laser) greatly improves the lithotripsy efficiency of the holmium laser and the degree of powdering, and breaks up “big stones” at super-fast speeds, which has helped many patients avoid second-stage surgeries, and reduced hospitalization costs and time costs.