Application of LED light source in medical lighting

Scope of application of LED light source

Ultraviolet light: The wavelength selection range of ultraviolet LED is 310nm~410nm, the wavelength is 20nm~30nm, and the optical power is several milliwatts to several hundred milliwatts. UVA can treat skin diseases such as psoriasis, and can also be used for beauty, sterilization, etc.

Infrared light: LED infrared chips are suitable for the manufacture of near-red light devices, and IR LEDs in the range of 780nm to 1200nm can be selected for anti-inflammatory, analgesic and metabolism promotion.

Blue light: LED light source in the range of 425nm ~ 475nm, which can be used to treat neonatal jaundice, etc. The 446nm-477nm LED light source can promote the secretion of the pineal amine hormone-melatonin that regulates the biological cycle of the human body, and is conducive to enhancing the vitality of the human brain.

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

Mixed light and white light: LED white light or several different wavelength LEDs are mixed in the same package to form yellow-green light, purple light and blue-green mixed light, etc., which can meet different treatment needs. White light irradiation with different color temperatures can be used for insomnia adjustment therapy.

Advantages of LED light sources

LED light sources can be used to form any geometric shape, point, line, and surface light sources of any size, and can also be miniaturized. The LED light source can be used to form a soft light source and a blanket light source, and even combined with clothes to form a wearable light source. For example, encapsulating blue LEDs in a blanket-like baby quilt could eliminate the need for goggles to protect the eyes when treating neonatal jaundice.

LED can work with DC voltage lower than 6V, and there is no electricity safety problem caused by high voltage such as mercury vapor lamps.

According to reports in the medical literature, the use of LED as a light source for blue light, red light, near-infrared light, ultraviolet light, and multi-color mixed light phototherapy has achieved obvious clinical effects. Major companies in the United States, Japan, and Europe have launched various phototherapy equipment using LED light sources, and domestic related enterprises, schools, and medical institutions have also achieved a lot of results.

Surgical shadowless lamp: LED light source is being widely recognized

When a doctor performs an operation on a patient, since the head, hands, and surgical instruments of the medical staff will all cast shadows on the surgical site and interfere with the doctor's visual recognition of the surgical site, the surgical lighting must meet the requirements of no shadows. The shadowless lamp is a large-area light source that illuminates at any angle without producing shadows.

Cold light and color temperature adjustable, high color rendering requirements

Surgical lighting light source: The radiation light does not contain IR spectrum, does not generate heat, and medical staff will not feel fatigued, which can reduce the risk of infection of the patient's trauma site due to excessive temperature.

Since different parts of the human tissue have different visual clarity under different light color temperatures, the color temperature of the surgical illumination light is required to reach 2700k ~ 6500k, which can be adjusted, and the color rendering should be higher than 90, so as to improve the medical staff's ability to understand the lesion tissue, Ability to identify and judge changes in color and lustre such as blood.

The light source can be adjusted remotely as needed

The lamp arm and lamp head of the lamp can be moved up and down, left and right cyclically as needed, and can be remotely controlled, and the size of the light field of the light can also be adjusted.

Lamps will affect the operating room air conditioning, clean laminar flow, operating room temperature and cleanliness, which needs to be solved from the aspects of lighting design and material selection.

Emergency treatment

Surgical lighting fixtures must have a power failure emergency function. Once the power fails, it will be instantly transferred to the battery or backup power supply. The conversion time is less than 1 minute, no noise, and the emergency time is 4 hours to 6 hours to ensure that no medical accidents are caused by the power failure.

no glare

Surgical lighting should not cause flash or reflected light on surgical instruments, sheets, gauze, medical utensils and other items, interfere with the sight of medical staff, and cause glare hazards.

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