Lasers & photonics
an infrared laser to tighten the skin and remove excess skin and fat. CO2
lasers replaced cold-steel
Lumics’ diode lasers precisely target blood vessels and cause them to coagulate, eventually fading from view.
manufacturers that want to offer laser-based solutions for dermatologists, including different customisable options and an efficient cooling system to ensure reliable and consistent performance during treatments. Due to the capability of being equipped with the specific wavelengths absorbed by haemoglobin (up to four different wavelengths in one unit), they are a highly effective source in the treatment of vascular lesions. When directed at the affected area, Lumics’ diode laser precisely targets the blood vessels, causing them to coagulate and eventually fade from view. This targeted approach minimises damage to surrounding tissues, making diode lasers a safe and efficient choice for telangiectasia treatment.
Aesthetics applications Photonics technologies and devices have developed not just to treat disease, but also as a way to enhance the skin, applications typically characterised as ‘cosmetic dermatology’. One example is body contouring or body sculpting, a treatment focused on the elimination of fat, shaping areas of the body and tightening the skin. Lumics’ diode lasers are used in this application due to their capability to deliver controlled and consistent energy to specific areas of the body.
“The light can penetrate deep into the skin to target fat cells, causing them to break down and stimulating collagen production and leading to fi rmer and tighter skin.”
The light can penetrate deep into the skin to target fat cells, causing them to break down and stimulating collagen production and leading to firmer and tighter skin. This dual-action approach makes diode lasers an ideal choice for body contouring procedures, allowing patients to achieve a more sculpted and youthful appearance. Another example is laser blepharoplasty, also known as laser eyelid surgery. This procedure uses
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scalpels in surgical dermatology procedures a few years ago. They were selected as the best suited surgical laser for this application because both cutting and haemostasis are achieved photo- thermally. Nevertheless, efforts have been focused on finding alternatives to avoid the surgical process altogether. One of the technologies that arose as alternative is the plasma fibroblast therapy, which presents some interesting benefits: there is no need to cut the skin, it is a pain-free treatment – although there can be some discomfort – no injectable anaesthetic is needed and it requires minimal recovery time. The treatment is performed using a plasma fibroblast pen that discharges a high frequency electric current just above the skin, causing micro injuries in the epidermal and upper dermal layers of the skin. The target of the treatment are the fibroblasts – collagen and protein producing cells that play an important role in maintaining skin firmness and helping skin heal. The heat damage breaks down proteins and stimulates fibroblast activity, encouraging tissue to regenerate and tighten the skin. The company Monocrom has developed a specific CW, fiber- coupled laser source to integrate in these plasma fibroblast pens, with a peak wavelength at 1,478nm and operating power of 2W.
Er: glass fibre lasers for facial cosmetic treatments Staying on the theme of facial rejuvenation, recent studies have looked at the results with newly developed Er: glass fibre lasers. These create microscopic thermal treatment zones within the stratum corneum and epidermis. These new sources allow for cosmetic treatment without the need of topical analgesics, and also reduce pain, discomfort and recovery time when compared with other laser-based techniques. The company LumIR is developing these novel Er:glass lasers to replace two main legacy technologies, Er:YAG lasers and CO2
lasers. The company offers single
mode beam quality and single mode delivery fibre, allowing greater flexibility for scanners or diffractive optics and greater depth of field for a specific beam size, a benefit when used around the nose area; low lasing threshold, meaning a high dynamic range; and high repetition rates, in the range of kHz, allowing faster scanning speeds. One of the key characteristics is the possibility of using wavelengths in the range from 2,780– 2,910nm, very close to the water absorption peak and allowing for the right balance between ablation and coagulation. ●
Medical Device Developments /
www.nsmedicaldevices.com
Lumics
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