2140nm Narrow Band Filter

Narrow Band Pass Filter for 2140nm holmium laser lithotripsy holmium laser wavelength is 2.1um, which is at the absorption peak of water. The laser energy is efficiently absorbed by the water in stone and tissue, realizing the dual functions of lithotripsy and cutting.

Because the penetration depth of holmium laser in the tissue is less than 04mm, it can cut accurately without damaging the surrounding tissue. Holmium laser is widely used in urology and can be used in dermatology, Gastroenterology, general surgery, facial features and other fields.

The wavelength of holmium laser is 2.1um, which is at the absorption peak of water. The laser energy is highly absorbed by the water in stones and tissues, realizing the dual functions of lithotripsy and cutting. Because the penetration depth of holmium laser in tissues is less than 04mm, it can perform accurate cutting without damaging the surrounding tissues. Holmium laser is widely used in urology and can be used in dermatology, obstetrics and Gynecology, Gastroenterology, general surgery, facial features and other fields.

The lithotripsy effect of holmium laser on stones is mainly through a “drilling effect”, whereby the stones are “vaporized” to form fine stone dust. Holmium laser is emitted in pulse mode, with emission time of 0.255 and instantaneous power of 10kW, which is enough to crush stones with various components and densities. Its tissue penetration depth is less than 0.5mm, the tissue damage is slight, it is not easy to form scar, and it will not lead to urinary tract stenosis after operation.

Holmium laser can be conducted through optical fiber, so it can cooperate with various endoscopes to carry out minimally invasive surgery. It has the characteristics of small damage to surrounding normal tissues, rapid postoperative recovery, good hemostatic effect, stone powder and so on. It is favored by clinical experts and has become the gold standard of urinary lithotripsy.

It is mainly used for endoscopic treatment of urinary stones, such as kidney stones, ureteral stones, ureteral and urethral stricture cutting, polyp wrapped stones, bladder stones, bladder tumors and so on.

Holmium laser lithotripsy is carried out by means of an optical fiber λ The lithotripsy completed with the help of endoscope in vivo belongs to intracavity lithotripsy. Holmium laser can crush any part and any component of urinary calculi into powder by its unique high-efficiency lithotripsy method. It is a new weapon for the treatment of urinary calculi with high efficiency, safety, low consumption, time saving and very low side effects. It can be called a real “sniper” of urinary calculi.

The energy generated by the holmium laser can vaporize the water between the end of the optical fiber and the stone to form tiny vacuoles, and transmit the energy to the stone to crush the stone into powder. Water absorbs a lot of energy and reduces damage to surrounding tissues. At the same time, the penetration depth of holmium laser to human tissue is very shallow, so it has the least damage to the surrounding tissue and the highest safety. In the process of gravel, stones rarely run, and the recoil rate is very low, so the efficiency is greatly improved. It can be directly crushed by cystoscopy, ureteroscopy and percutaneous nephroscopy without tissue damage. Moreover, the holmium laser fiber is flexible, which can be introduced not only through rigid ureteroscopy, but also through soft ureteroscopy. Therefore, it can effectively treat ureteral calculi and renal calculi in any part. The treatment of bladder stones with holmium laser is as easy as a fish in water. Just introduce the holmium laser fiber through the working channel of cystoscope, and all the stones can be broken with a flick of your fingers, which is safe and time-saving