# US 10,307,495 B2 · Sterilizing apparatus

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- Number: US 10,307,495 B2
- Document ID: US10307495B2
- Status: Granted
- Kind: B2
- Application number: 15/512,423
- Filed: 2015-06-29
- Published: 2017-10-12
- Granted: 2019-06-04
- Earliest claimed: 2014-09-19
- Assignees: Sharp Kabushiki Kaisha
- Applicants: Sharp Kabushiki Kaisha
- Inventors: Jun Mori; Tim Michael Smeeton
- Web page: https://patentgrep.com/patent/US10307495B2

## CPC

- A61L 2/10: Ultraviolet [UV] radiation
- A61N 5/06: using light
- A61N 5/0613: {Apparatus adapted for a specific treatment}
- A61N 5/0624: {for eliminating microbes, germs, bacteria on or in the body}
- A61L 2103/05: Living organisms or biological materials
- A61N 5/0601: {Apparatus for use inside the body}
- A61N 5/067: using laser light
- A61N 2005/063: {comprising light transmitting means, e.g. optical fibres}
- A61N 2005/0643: {Applicators, probes irradiating specific body areas in close proximity}
- A61N 2005/0647: {the applicator adapted to be worn on the head}
- A61N 2005/0661: {ultraviolet}
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)

## Abstract

A sterilizing apparatus having both excellent safety and operability is provided. A sterilizing apparatus (1) according to an aspect for carrying out the present invention is a sterilizing apparatus (1) that radiates light including ultraviolet rays onto an affected area (6), wherein first wavelength light (Lλ1) having a peak wavelength in a wavelength range of 190 nm or more and 230 nm or less, and second wavelength light (Lλ2) having a peak wavelength in a wavelength range of 400 nm or more and 780 nm or less are emitted.

## Claims

### Claim 1

A sterilizing apparatus radiating light including ultraviolet rays onto a target object, comprising:
a laser light source oscillating second wavelength light having a peak wavelength in a range of 400 nm or more and 460 nm or less;
a light frequency converter receiving the second wavelength light oscillated from the laser light source, the light frequency converter converting a portion of the second wavelength light into first wavelength light having a peak wavelength in a range of 190 nm or more and 230 nm or less,
the light frequency converter emitting the first wavelength light and the second wavelength light not being converted into the first wavelength light; and
a light intensity reducer changing the ratio of the light intensity of the first wavelength light to the light intensity of the second wavelength light while the sterilizing apparatus is operated, wherein
light intensity of the ultraviolet rays of a wavelength range of more than 230 nm and less than 400 nm radiated onto the target object is less than 3 mW/cm2,
the ultraviolet rays of the wavelength range of more than 230 nm and less than 400 nm radiated onto the target object with less than 3 mW/cm2 of the light intensity suppresses harm to somatic cells, and
the light intensity reducer reduces the second wavelength light by absorbing or reflecting a portion of the second wavelength light emitted from the light frequency converter, and, the light intensity reducer transmits, without reducing, the first wavelength light emitted from the light frequency converter.

### Claim 2 (depends on 1)

The sterilizing apparatus according to claim 1, wherein
the light intensity reducer changes the ratio of the light intensity of the first wavelength light to the light intensity of the second wavelength light while maintaining the light intensity of the ultraviolet rays of the wavelength range of more than 230 nm and less than 400 nm to be less than 3 mW/cm2.

### Claim 3 (depends on 1)

The sterilizing apparatus according to claim 1, wherein
the light frequency converter being a light frequency doubling converter,
and being provided with the light intensity reducer that reduces the second wavelength light.

### Claim 4 (depends on 1)

The sterilizing apparatus according to claim 1, wherein
the light intensity reducer receives the first wavelength light and the second wavelength light emitted from the light frequency converter and the light intensity reducer emits the first wavelength light and the second wavelength light to outside of the sterilizing apparatus.

### Claim 5 (depends on 4)

The sterilizing apparatus according to claim 4, wherein
the first wavelength light and the second wavelength light emitted from the light intensity reducer to outside of the sterilizing apparatus are both substantially parallel light.