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Light radiation device for medical treatment

a radiation device and light technology, applied in radiation therapy, radiation therapy, disinfection, etc., can solve the problems of skin aging or cancer, adverse effects, etc., and achieve the effect of minimizing adverse effects on the human body and high sterilization

Inactive Publication Date: 2020-07-23
SEOUL VIOSYS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a light radiation device that can kill more germs while minimizing harmful effects on humans.

Problems solved by technology

However, the UV light causes an adverse effect such as skin aging or cancer, in addition to the sterilization effect.

Method used

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  • Light radiation device for medical treatment
  • Light radiation device for medical treatment
  • Light radiation device for medical treatment

Examples

Experimental program
Comparison scheme
Effect test

experimental example 1

ccording to Irradiation Conditions

[0115]FIG. 10 is a graph illustrating a sterilization effect depending on irradiation conditions when a light is irradiated to a sterilization subject using a conventional light emitting device and a light emitting device according to an embodiment of the present disclosure. In FIG. 10, a bacterium used as a subject of sterilization is Staphylococcus aureus. The Staphylococcus aureus was smeared on a bacterial culture medium and incubated at 35 to 37° C. for one day, and bacterial colonies formed on the bacterial culture medium were collected, suspended in a saline solution, and performed with centrifuge, and a supernatant was discarded, a saline solution is added to be diluted, and thus a bacterial solution having a suitable concentration for a sterilization experiment was prepared. The prepared bacterial solution was placed in separate containers, the conventional light emitting device and the light emitting device according to an embodiment of th...

experimental example 2

on Power Test of the First Light and the Second Light

[0124]In the present test, an MRSA strain was used as a pathogen. After the MRSA strain was cultured, a suspension having a constant bacteria concentration (7 log) was prepared. The first light and the second light were irradiated to the bacteria suspension in each light amount. In this case, the wavelength of the first light was 405 nm and the wavelength of the second light was 275 nm. The bacteria irradiated with the first light and the second light were each diluted at a specific concentration, inoculated into agar plates, and then cultured again. Thereafter, the number of colonies of the cultured bacteria was identified, and the numerical value was converted into a log value. Each test was performed under the same conditions five times.

[0125]Table 2 and FIG. 11A illustrate the test result for the sterilization power of the first light, and Table 3 and FIG. 11B illustrate the test result for the sterilization power of the secon...

experimental example 5

n Amount of Light (In Vitro)

[0139]The bacteria count and the sterilization power were measured as function of an amount of light in vitro condition when the first light and the second light are sequentially irradiated, in order to find out the optimal amount of each light, based on that the sequential irradiation of the first light and the second light, which shows the increase in the sterilization power.

[0140]In the present test, an MRSA strain was used as a pathogen. After the MRSA strain was cultured, a suspension having a constant bacteria concentration (7 log) was prepared. The first light and the second light were sequentially irradiated to the bacteria suspension by changing the dose of the first light to 30 J / cm2, 60 J / cm2, 90 J / cm2, and 120 J / cm2. However, in the case of the second light, the light of 275 nm was employed with a dose limited to 3 mJ / cm2 based on the allowable level of the human body.

[0141]Next, the bacteria were diluted at a constant concentration, inoculate...

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Abstract

A light radiation device includes a housing, a substrate provided in the housing, and a light source mounted on the substrate. The light source includes a first light source including at least one first light source to emit first light having a blue wavelength band, a second light source including at least one second light source to emit second light having a ultraviolet wavelength band, and a control unit to control the first light source and the second light source such that the second light source sequentially emits the second light after the first light source emits the first light. A dose of the second light source is less than 1 / 10 of a dose of the first light source.

Description

PRIORITY AND CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Applications No. 62 / 795,730, filed on Jan. 23, 2019, and No. 62 / 825,993, filed on Mar. 29, 2019, which are hereby incorporated by reference for all purposes as if fully set forth herein.RELATED ART[0002]Embodiments of the present disclosure described herein relate to a light radiation device, and more particularly, relate to a light radiation device used for medical treatment.[0003]Recently, various treatment devices using ultraviolet (UV) light have been developed. In general, it is well known that the UV light has a sterilization effect. A conventional UV treatment device employs a traditional UV lamp, operates the UV lamp near a skin, and irradiates the UV light to a part of the skin to be treated.[0004]However, the UV light causes an adverse effect such as skin aging or cancer, in addition to the sterilization effect. Accordingly, there is a need to provide a process...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61N5/06A61L2/08A61L2/10
CPCA61N2005/0661A61N2005/0662A61L2/084A61N5/0624A61L2/10A61N5/0616A61L2/0047A61L2202/21A61N2005/0626A61N2005/0663
Inventor BAE, HEE HOYOON, YEONG MINLEE, A YOUNG
Owner SEOUL VIOSYS CO LTD
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