Laser technologies are successfully used in various areas of medicine: surgery, urology, cosmetology, dentistry, ophthalmology, physiotherapy, etc.
The medical laser is a key tool in such operations as laser lithotripsy, prostate vaporization, endovenous laser coagulation in the treatment of varicose veins veins, laser hair removal and skin resurfacing, laser welding of the retina and eye microsurgery and many others. Therefore, any malfunction of laser devices disrupts the work of institutions using them.
What to do if the laser fails
If there was no burning smell and refrigerant leakage, then you can try turning off the power, and after 1 minute turn it on again. If the error appears at the moment of trying to receive radiation (pressing the pedal), then after turning it on again, we recommend trying to work on other power or energy modes. If the laser does not turn on at all, then we recommend checking that the mains voltage meets the requirements of the laser, the integrity of the power cord and fuses, and the position of the laser emergency shutdown button. If the above tips do not help, it remains to contact the service department, indicating the type of laser, manufacturer, serial number, as well as an error message from the laser display (it is better to take a picture).
Repair of lasers also has its own specifics, requiring special skills and devices, such as a collimator for mirror alignment, a laser radiation power meter, and others.
Img. 1 Neodymium-activated yttrium-aluminum garnet crystal (Nd:YAG) - the working body of medical 100-watt lasers Dornier Medilas 4100, 5100 и 8100 fibertom.
Repair of surgical, urological, cosmetic, dental lasers
We make repair and recalibration of surgical, cosmetic, urological, dental medical lasers.
We repair the following types of lasers in Ukraine:
- Neodymium lasers: Nd:YAG Dornier Medilas 4060, 4100, 5060, 5100, 8100 fibertom, MBB Medizintechnic 4060, 4100, fibertom. Application: surgery, in particular in laparoscopy, phlebology (varicose veins, recanalization), gynecology , cosmetology (removal of skin formations, warts, tattoos, birthmarks).
- Holmium lasers: Ho:YAG Medilas H, Medilas H20. Application: urology (laser lithotripsy, strictures), ENT (removal of formations of the nasopharynx, larynx).
- Erbium lasers: Er:YAG Medilas E. Used in cosmetology (laser thin skin resurfacing).
- Diode (semiconductor) lasers: LiteBeam, MultiBeam, SkinPulse, UroBeam. Application: phlebology (endovenous operations), gynecology, laparoscopy, urology (prostate vaporization, treatment of benign prostatic hyperplasia), cosmetology (removal of the vascular network, warts, tattoos, birthmarks, and other formations), dermatology (psoriasis treatment), orthopedics (percutaneous laser disc decompression).
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- Gas CO2 lasers: Lancet LST20/01, Mattioli. Application: gynecology, cosmetology (laser skin resurfacing, removal of pigmented formations, moles , tattoos).
We check and calibrate laser power, align optics, and repair laser power supplies.
Rules for the operation of medical lasers
Lasers have their own specifics of operation and maintenance.
Each medical laser is a special type of electron-optical device, which has its own specifics of operation and operating rules.
Special attention should be paid to protecting the eyes, even if doctors use laser radiation only inside the patient's body. Do not neglect the use of protective glasses, which must necessarily correspond to the wavelength of the laser with which they are used, and be undamaged. After all, it is not uncommon for personnel during an operation to accidentally touch a light-guide fiber, it is hard, but brittle, cracked, and laser radiation "flooded" the operating room, repeatedly reflected from the tiled walls.
Due to the design features, lasers are extremely sensitive to mechanical stress. Therefore, it is strongly not recommended to transport them from room to room without special need. Moreover, it is necessary to protect against bumps, falls, etc.
All lasers are much more sensitive to temperature conditions than many other medical equipment. Therefore, it is undesirable to operate lasers at room temperatures above 25 degrees. Celsius, even if the manufacturer's instructions allow a wider temperature range. To extend the life of the laser, the optimum air temperature in the room will be approximately 20 degrees. Celsius.
All surgical, cosmetic, urological and dental lasers have forced cooling, so during operation it is strictly forbidden to block the ventilation holes even with porous material. Moreover, for adequate cooling, it is recommended to leave about half a meter free on each side of the laser body.
It is strongly not recommended to turn off the power of the laser while it is in the activated state. Doing so may reset the laser power calibration, which in turn will require a call to a specialist. In this regard, we do not recommend using emergency laser shutdown buttons and door disconnect systems for other purposes and without special need.
Each laser is also an optical device that generates sufficiently powerful radiation. But unlike other optics, such as cameras, dust inside the laser can not only degrade the quality of the laser, reduce power, but also lead to serious failure! For surgical, urological, cosmetic and In dental lasers, a fairly common malfunction is thermal damage (burnout) of one of the mirrors or lenses due to the ingress of dust particles on them. In addition, due to dust deposits in the cooling radiator, thermal protection may work and turn off or, at best, forcefully reduce the laser power. The presence of a "dust carpet" also leads to a reduction in the service life of lasers due to overheating.
Due to the design features, laser devices are critical to power quality. Instability of the mains voltage, sudden surges, sudden shutdowns - power-ups often lead to failure of the power supplies built into the lasers or to the reset of power calibrations. It is strictly forbidden to turn on lasers in "sparking" sockets.
Re-turning on the laser, if necessary, is recommended to be done no earlier than a minute after turning it off.
If the pause between sessions of using the laser is less than 30 minutes, it is better leave the laser on.
Understanding the laser abbreviations
Nd:YAG Aluminum - yttrium garnet activated with neodymium. Wavelength 1064 nm (infrared);
Ho:YAG Holmium activated yttrium aluminum garnet. Wavelength 2100 nm (infrared);
Er:YAG Erbium activated yttrium aluminum garnet. Wavelength 2900 nm (infrared);
CO2 laser - carbon dioxide laser (operating by discharging in a carbon dioxide environment). Wavelength 10.6 µm (infrared);
He-Ne laser - helium - neon laser (working by discharging in a mixture of helium and neon). Wavelength 632.8 nm (red-orange).