LED Medical Lighting Market Analysis

China's lighting products used in the medical field (excluding functional lighting) and the overall production and technology level are low, and the brand concentration is not high. Most medical lighting products used in hospitals are purchased from foreign countries, such as German Martin and Chuanghu. The market is almost monopolized by foreign companies. Although the number of medical lighting products is not as large as that of common lighting, the price is high and the market value is high, which deserves attention.

In China, the medical lighting industry belongs to the medical device industry. According to the statistics of 2008, there are more than 7,300 enterprises in the country that are engaged in the production of medical devices. However, less than 3% of companies can produce medical lighting products, and most companies only produce low-end products such as movie viewers. Until recent years, medical lighting products using LEDs as light sources emerged and were applied.

With the emphasis on medical and health care, medical rehabilitation, green environmental protection and energy saving, since 2007, China's LED medical lighting has started. However, due to the high barriers to entry and technical risks, most medical device companies do not know much about LED performance and use technology, and the medical products used in medical treatment involve medical mechanism, light, machine, electricity, and heat. Only a few large companies cooperate with medical institutions to produce such products. In addition, the medical lighting product certification program is complicated, so LED medical lighting does not progress well and does not meet the demand.

At present, there are nearly 3,000 LED companies in China, many of which have strong research, development and production capabilities in LED landscape lighting and functional lighting products. However, because they do not belong to the medical device industry, they lack access.

According to the Ministry of Health's Statistical Communique on Health Development, in 2008, there were 278,000 medical and health institutions in China, including more than 20,000 hospitals, more than 60,000 hospitals, and more than 170,000 clinics in communities and streets. These units are currently using traditional light source lighting devices, the market is very large, only from the energy-saving perspective, the upgrading of medical lighting based on semiconductor lighting technology becomes inevitable.

However, it must be known that medical lighting belongs to medical devices, has strict regulations and certification requirements, and requires strict technical and safety regulations. Compared with common functional lighting, the technical risks are even greater. For this reason, audits of production companies for access permits should be more rigorous, but non-medical device companies should not be excluded, such as licensing LED lighting companies to enter the field.

LED lighting is currently being transformed from landscape lighting to functional lighting, from outdoor lighting to indoor lighting, and from general lighting to special lighting. This is the inevitable result of technological progress and social progress.

The LED light source suitable for medical lighting meets the requirements of adjustable control, high reliability, and long life, and is the best solid light source to replace the current halogen lamps, mercury lamps, and xenon lamps.

Since 2010, domestic LED operation shadowless lamps have been applied in some of the top three hospitals and exported to Japan, Australia, the Philippines and other countries.

LED light source: the lowest cost of energy saving and environmental protection LED is the most energy-saving artificial light source, using LED light sources to "replace" incandescent, fluorescent, sodium (HID), halogen, mercury vapor, and xenon lamps, which can save energy by 30% to 80%. Currently, LEDs are the light source that uses the lowest cost during the life cycle of the light source. Technical characteristics of LED light sources Energy saving: As of now, in artificial light sources other than LEDs, the highest energy efficiency of electro-optic conversion is low-pressure sodium lamp (LPS), which is about 140 lm/W. In 2011, the level of power LED laboratories has reached 203lm/W. LED is the most energy-saving artificial light source. Using LED light sources to "replace" incandescent, fluorescent, sodium (HID), halogen, mercury vapor, and xenon lamps can save energy by 30% to 80%.

Environmental protection: LED light source is a semiconductor solid state light source (SSL), which is electroluminescent, not thermal, cold, and does not contain toxic and harmful substances in the light source; while traditional light sources such as fluorescent lamps, sodium lamps (HID), mercury vapor lamps, xenon lamps Including mercury, sodium, cadmium and other harmful substances, their waste will cause environmental pollution. An energy-saving (fluorescent) lamp contains 5 mg to 10 mg of mercury. Once broken, it will cause serious pollution to water and land. 1mg mercury can contaminate 5 tons of water. Moreover, the cost of recycling and disposal of traditional light sources is also very high, and LED light sources do not have the problem of causing pollution to the environment.

Spectral purity, no harmful spectrum: Group III-V semiconductor electroluminescence, making the LED radiation spectrum pure, half-width only 20nm ~ 30nm. The monochromatic light such as red (R), blue (B), yellow (Y), and green (G) does not contain ultraviolet (UV) and infrared (IR) (except for UVLED and IRLED). Even multi-color mixed light, such as white light (R or other broad-spectrum light color, the spectrum does not contain UV and IR light radiation that causes harm to human eyes and skin. Compared to other artificial light sources, such as incandescent lamps, halogen lamps The spectrum contains 45% to 70% of IR light, and the spectrum of fluorescent lamps and sodium lamps contains 15% to 25% of UV light, and the use of such products, if not protected, will cause light pollution to users. It is called the healthy light of the 21st century.

Easy to implement intelligent control: LED response fast, easy to color (color temperature), dimming (optical power) and light projection direction adjustment, easy to achieve intelligent, constitute a smart light source.

Since it is a semiconductor light emitting device, the LED transient response is only ns level and can be driven at a frequency of several tens of kilohertz to several hundreds of kilohertz, and there is no strobe causing visual fatigue. Because of this, it is easy to achieve digital, intelligent control. If the color temperature (CCT) of the light source, which is difficult to achieve with other artificial light sources, is continuously adjusted, the LED can be easily implemented. This is very important for observing different lesions, different tissues, and the clarity of blood color in surgical lighting and surgical debridement lighting.

LED is a low-voltage driven light source, safe and reliable: LED light source is driven by low voltage, and it can be instantly transferred to the battery during emergency lighting. The conversion time is only a few seconds, and it will not cause accidents due to power outage. The LED light source converts quickly and there is no emergency generator noise during the conversion process.

The LED drive power supply can meet the international and domestic standards for medical devices. Such as EN60601-1-2, UL60950, IEC68-2-29 and 3C, as well as the certification requirements for medical equipment electrical safety and electromagnetic interference.

LED is a light source with high reliability and long life cycle: LED is a solid light source, high reliability, long life, and its 30% light decay time (that is, life determination time) can be at -30 °C ~ +55 °C ambient temperature Work, life time up to 30,000 hours ~ 50000 hours, is the longest life light source of artificial light. (The incandescent filament has a life of about 2,000 hours, a fluorescent lamp of 8000 hours, and a sodium lamp and a mercury vapor lamp are only about 10,000 hours).

LED is the light source with the lowest cost in the life cycle of the light source, which is the sum of the cost of purchasing energy consumption + maintenance and replacement + replacement during the life cycle. The deficiency of traditional light sources At present, artificial light sources and LED light sources commonly used in the medical field, in addition to the above-mentioned basic characteristics such as energy efficiency, spectral purity, color temperature control, response time, reliability, life time, and life cycle cost, are summarized. There are some deficiencies below.

Mercury vapor discharge light source - vapor blue light, etc.:

Need to use high voltage power supply, slow response, including UV and IR light radiation; is a heat source, will cause the surface to be heated, use protection; mercury, is not conducive to the treatment of waste.

Solid-state laser sources - He-Ne lasers, etc.:

The cost is high, the power supply system is complicated, protection is needed when using it, and the safety is poor; when the power is large, the water cooling technology is required to dissipate heat and the safety is poor.

Halogen, Xenon, etc.:

Contain IR radiation, it is a heat source; Need to set up the lens that filters out IR, or apply IR absorption film on the reflector,etc. in the occasion, the life cycle uses the cost to be high.

LED light source medical applications: a wide range of advantages obvious medical lighting classification hospital building internal and external functional lighting: refers to the medical resources, medical information display other than the functional lighting, mostly fluorescent fluorescent lamps, grille lights, ceiling lamps, shot Lamps, downlights, and HID lights.

These traditional light sources, such as fluorescent energy-saving lamps, fluorescent lamps, sodium lamps, and halogen lamps, can be replaced with LED lighting.

Peep lighting: used for lesion detection, observation lighting. The main use of projected, small-angle, directional lighting fixtures, both inside and outside the two. Currently, products have used laser (LD) and LEDs as light sources.

Surgical lighting: fixed and mobile two types. Used for doctors to provide high-quality lighting fixtures for patients. At present, the mainstream is a xenon lamp and the cost is high.

Disinfection and Sterilization Irradiation Light Source: Using ultraviolet light to sterilize medical instruments, medical equipment and medical vessels, which has the advantages of high speed and high efficiency. More mercury vapor lamps are currently used.

UV radiation disinfection and sterilization are the use of ultraviolet light through the microbial cell membrane and cell nucleus, destroying its DNA or RNA molecular chain, making it lose its ability to replicate and activity, to achieve the purpose of sterilization and antivirus. With UV disinfection, there are no problems such as the disposal of waste liquids and containers after retort sterilization, and environmental protection is reliable.

Phototherapy - light irradiation treatment light source: is the use of photobiological effects, with a specific wavelength of light to make the body's skin or certain tissue cells to promote growth or inhibit growth, to achieve therapeutic purposes. The efficacy of LED light source for phototherapy is highlighted.

Compared with traditional light sources, LEDs are more in line with the special requirements of light therapy for light sources. Mainly has a wide range of optical wavelength selection, the amount of radiation, controllable and adjustable radiation spot, light color purity, no harmful spectral components, and electrical safety and other characteristics. Therefore, LED must become the first choice of healthy light source to replace traditional phototherapy light source, and become an effective clinical treatment. The pathological detection light source detects erythrocyte sedimentation rate: with 570 nm green light, erythrocyte sedimentation rate can be measured; with 640 nm blue light and 900 nm irradiance light, the amount of chlorine in blood can be detected.

Diagnosis of Bladder Cancer: Using 488nm blue light to irradiate urine samples, observe whether there are peaks in the green light spectral region from 550nm to 570nm in the fluorescence spectrum and diagnose bladder cancer.

The scope of application of LED light source UV light: UV LED wavelength range of 311nm ~ 400nm, wave width of 20nm ~ 30nm, optical power from a few milliwatts to several hundred milliwatts. UVA can treat skin diseases such as psoriasis, and can also be used for beauty, sterilization, and the like.

Infrared light: The LED infrared chip is suitable for manufacturing near-red light devices. IRLEDs in the range of 780nm to 1200nm can be used for anti-inflammatory, analgesic, and metabolism promotion.

Blu-ray: LED light source in the range of 425nm to 475nm can be used to treat neonatal jaundice. The 446nm to 477nm LED light source can promote the secretion of the melatonin hormone melatonin, which regulates the biological cycle of the human body, and is conducive to the enhancement of human brain activity.

Red light: The red light LED can be used as a light source in the range of 615nm to 700nm. The light color is pure, and the red light can promote cell synthesis, promote wound healing, and treat various diseases through photochemical action.

Mixing light and white light: The use of LED white light or several different wavelength LEDs in the same package to mix light, such as yellow-green light, violet light, and blue-green mixed light, can meet different treatment needs. Different color temperature of white light irradiation can be used as insomnia conditioning therapy.

The advantages of LED light sources can be constructed with LED light sources of any geometric shape. Dots, lines, and surface light sources of any size can also be miniaturized. The use of LED light sources can constitute a soft light source and a blanket type light source, and even when combined with clothing can constitute a wearable light source. For example, when a blue LED is encapsulated in a blanket-like baby's quilt, the eye can be used to protect the eye from neonatal jaundice.

The LED can be operated with a DC voltage lower than 6V, and there is no problem of power safety due to high voltage such as mercury vapor lamp.

The medical literature reports that the use of LEDs as light sources for blue, red, near-infrared, ultraviolet, and multi-color mixed light phototherapy has achieved significant clinical results. Major companies in the United States, Japan, and Europe have introduced various phototherapy devices using LED light sources, and domestic companies, schools, and medical institutions have also achieved many results.

Surgical shadowless light: LED light source is widely recognized Doctors perform surgery on patients because the head, hands, and surgical instruments of the medical staff will cause shadows on the surgical site and interfere with doctors' identification of the surgical site's vision. Therefore, the surgical lighting must reach no Shadow requirements. The shadowless lamp is a large-area light source that is illuminated at any angle and does not produce shadows. Cold light and color temperature adjustable, high color rendering requirements Surgical lighting source: IR light does not contain radiation, no heat, medical staff will not produce a sense of fatigue, can reduce the patient's wound due to high temperature and infection risk.

Because different parts of human tissues have different visual clarity under different light color temperatures, the color temperature of the surgical illumination light is required to reach 2700k to 6500k, which can be adjusted, and the color rendering property is higher than 90 to improve the medical staff's organization of the lesions. The ability to identify and judge changes in color, such as blood.

Light source can be remotely adjusted according to the needs of the lamp arm, lamp, etc. can be carried out as required to move up and down, left and right circulation, and can be remotely controlled, the light irradiation light field size can also be adjusted.

Lamps will affect the operating room air conditioning, clean laminar flow, and operating room temperature, cleanliness, which need to solve problems from the lamp design, material selection.

The emergency lighting must have emergency power-off function. Once the power is cut off, it will be immediately transferred to the battery or standby power supply. The conversion time is less than 1 minute and there is no noise. The emergency time is 4 hours to 6 hours to ensure that there will be no medical accident due to power outage.

No glare-free surgical lighting can cause flashes or reflected light on surgical instruments, bed sheets, gauze, medical utensils, etc., due to light exposure, and interfere with the sightlines of medical personnel, causing glare hazards.

The requirements for surgical shadowless lamps are very strict. They involve the combined use of comprehensive technologies such as optics, electronics, micro-electromechanical, modeling structures, laminar flow analysis, and colorimetry. With the popularity of heart surgery and ankle surgery, the demand for surgical shadowless lamps has gradually increased. LED light sources are widely recognized for their outstanding advantages and their prospects are promising.