When the seasons change, there will be more people seeking treatment for red blood streaks. In medical beauty institutions, many clinical practitioners like to use Vascular vascular filters to treat red blood streaks. What is the effect of this treatment? Today, let's discuss it together~

Red blood streaks, medically known as telangiectasia, are a common skin vascular disease. Facial telangiectasia is mainly manifested by facial redness and visible telangiectasia, mostly red, purple or blue-purple in color. According to the appearance of dilated blood vessels, telangiectasia can be subdivided into dot-shaped, linear, dendritic and papular shapes, and they often occur in the nose, middle cheek and chin of the face. The diameter of these dilated blood vessels is usually between 0.1 and 1.0 mm, representing dilated venules, capillaries or arterioles.

The causes of telangiectasia are relatively complex and can be divided into two categories: primary and secondary. Primary telangiectasia is often related to family inheritance. Patients may be born with a thin stratum corneum and defective capillary vasodilation, which makes it difficult for blood vessels to contract after dilation. Secondary telangiectasia is more common and is usually induced by the use of hormone drugs, obstructed blood circulation, excessive exfoliation, sensitive skin, etc., such as high altitude redness, facial flushing, inflammatory redness, etc.

 Even in healthy people, telangiectasia is relatively common. According to the "Guidelines for the Diagnosis and Treatment of Common Diseases Related to Laser Beauty (2024 Edition)", photoelectric therapy has become the preferred method for clinical treatment of telangiectasia. Photoelectric therapy is mainly divided into two categories: selective and non-selective. Selective photoelectric therapy includes intense pulsed light, pulse dye laser, long pulse width YAG laser, KTP laser, semiconductor laser, etc.; non-selective photoelectric therapy includes CO2 laser, argon laser, etc. In general, the effectiveness of photoelectric therapy is between 53.3% and 100%.

Intense pulsed light therapy for capillary dilation mainly relies on photothermal coagulation, and its core lies in the principle of selective photothermal action. Oxygenated hemoglobin can selectively absorb full-wavelength strong light of a specific wavelength. When the light energy is absorbed, it will cause hemoglobin to coagulate, thereby achieving the purpose of treating capillary dilation. Oxygenated hemoglobin has a higher absorption rate near the wavelength of 500nm to 600nm. In contrast, the peak absorption of light by melanocytes is in the ultraviolet light range (240nm ~ 360nm), while the absorption of light and heat by the skin is mainly determined by skin pigment cells. Therefore, during the treatment process, as long as the appropriate tissue depth can be reached and the correct wavelength is used, the dilated capillaries can be effectively treated.

 The related study selected 149 patients with facial telangiectasia and randomly divided them into 3 groups, all of which were treated with different filters of intense pulsed light. 50 people in the treatment group used 530-650nm and 900-1200nm vascular filters; 50 people in the control group 1 used 560-1200nm filters; 49 people in the control group 2 used 590-1200nm filters. The handpiece spot size of all filters was 15mm×35mm, the sub-pulse energy density was 9-17J/cm², the pulse width was 4.0-6.0ms, the pulse delay was 20-40ms, and the cooling method was contact cooling. Each patient received the same instrument treatment twice, with an interval of 4 weeks each time.

Another study selected 128 patients with telangiectasia and randomly divided them into a control group and an observation group, with 64 cases in each group. Both groups received intense pulsed light treatment. The control group used a vascular filter with a wavelength of 560~1200nm; the observation group used a vascular filter with a wavelength of 530~650nm and a wavelength of 900~1200nm. The clinical efficacy of the two groups was evaluated after 5 months of treatment and 3 months of follow-up after surgery.

The results showed that the total clinical efficacy of the observation group after 5 months of treatment and 3 months of postoperative follow-up was significantly higher than that of the control group.

The intense pulsed light vascular filter is designed for superficial facial vascular problems. It uses a narrow-spectrum dual-wave filter with wavelengths of 530-650nm and 900-1200nm. Among them, the 530-650nm wavelength has a stronger absorption of melanin and a shallower penetration; the 900-1200nm wavelength has a weaker absorption of melanin and a deeper penetration. This narrow-spectrum dual-wave design can focus light energy more accurately on hemoglobin. In vascular treatment, the pulse width and energy of each sub-pulse can be adjusted according to the different skin colors, blood vessel diameters and blood flow velocities of different Asian patients, and the energy and release time of different pulses can be selected. When the blood flow velocity is fast, the hemoglobin content per unit volume is low, and the double peak absorption helps to improve the therapeutic effect; when the blood flow velocity is slow, the hemoglobin content per unit volume is high, and the therapeutic effect is more obvious than that of ordinary filters; whether it is the case of more deoxyhemoglobin or oxygenated hemoglobin, there are corresponding options. During the treatment process, the thermal damage to the skin caused by invalid spectrum can be avoided to the greatest extent, the occurrence of adverse reactions can be reduced, and the efficacy of effective spectrum can be improved at the same time.

1. Intense pulsed light can be used as the preferred treatment for shallow skin capillary dilation. For thicker capillaries, pulsed dye laser treatment is preferred, but adverse reactions such as swelling or purpura may occur. Usually, purpura will occur when a shorter pulse width is used for treatment, while purpura is less likely to occur when a longer pulse width and lower energy are used.

2. During treatment, the instantaneous changes in the blood vessels after absorbing energy should be carefully observed, which is crucial to determine whether repeated treatment is needed. During the treatment process, it is not advisable to repeatedly irradiate the energy from low to high gradually.

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Foremed Legend

The core founding team of Suzhou Foremed Legend Medical Technology Co., Ltd. comes from well-known universities at home and abroad such as Peking University. Foremed Legend focuses on the design, research and development and application of high-end medical beauty optoelectronic equipment based on compliance and product strength, and is committed to becoming a leading enterprise in the field of high-end medical beauty optoelectronic equipment, a provider of integrated diagnosis and treatment intelligent solutions, and a pioneer of medical beauty data integration platform.

Through the development of a series of underlying key technologies, Foremed Legend has independently developed a number of high-end medical devices, including picosecond laser therapy devices, long pulse laser therapy devices, intense pulsed light therapy devices, photoacoustic imaging skin detection devices, and cold air therapy devices. It continues to deepen the research and development of core product technologies, using better technical solutions to benefit the vast number of beauty seekers.

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