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Photodynamic therapy device

A technology of photodynamic therapy and light detection, which is applied in the fields of therapy, light therapy, medical science, etc., to achieve the effect of improving safety

Inactive Publication Date: 2017-08-01
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to Patent Document 1, it is described that PDT using ALA has a side effect of photosensitivity, and that treatment is accompanied by unbearable pain depending on the light intensity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0041] based on figure 1 , the configuration of the photodynamic therapy device 1a according to Embodiment 1 of the present invention will be described. figure 1 It is a block diagram showing the configuration of the photodynamic therapy device 1a. As shown in the figure, the photodynamic therapy apparatus 1a includes a light source (light source unit) 2, a photodetector (light detection unit) 3, a light intensity distribution control circuit (light intensity distribution determination unit) 6, a light source control unit 7a, and a detection unit. Part control part 7b. In addition, the presentation control unit 13 of the photodynamic therapy apparatus 1 a is connected to an external presentation unit 14 , and the light intensity distribution control circuit 6 is connected to an external operation unit 15 .

[0042] (light source 2)

[0043] In order to be able to measure the light intensity distribution (or light intensity density distribution), the light source 2 includes a ...

Embodiment approach 2

[0072] Next, based on Figure 4 The configuration of the photodynamic therapy system 100 according to Embodiment 2 of the present invention will be described. Figure 4 is a block diagram showing the configuration of the photodynamic therapy system 100 .

[0073] In the photodynamic therapy system 100 of the present embodiment, the photodynamic therapy device 1a includes a communication control unit (transmission control unit) 12, and can communicate with an external PC or communication terminal (communication device) 8 via the communication control unit 12. communication, which is related to figure 1 shown differently.

[0074] (communication control unit 12)

[0075] The communication control part 12 can be comprised so that it may perform control which transmits the information regarding the value of the electric current which drives each LED4 among several LED4 to an external PC or the communication terminal 8. Thereby, by performing data communication of the informati...

Embodiment approach 3

[0089] Next, based on Figure 5 The structure of the photodynamic therapy device 1b according to Embodiment 3 of the present invention will be described. Figure 5 It is a block diagram showing the configuration of the photodynamic therapy device 1b.

[0090] The photodynamic therapy device 1b of the present embodiment is different from the above-described embodiment in that it includes a distance sensor 9, a distance control circuit (distance determination unit) 10, and a distance drive system (drive unit) 11.

[0091] (distance sensor 9)

[0092] The distance sensor 9 detects the distance between the light source 2 and the light detector 3 . The distance control circuit 10 determines whether or not the distance detected by the distance sensor 9 is within a predetermined range. Also, when the distance control circuit 10 determines that the distance is not within the predetermined range, the distance driving system 11 performs control to change the distance between the ligh...

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PUM

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Abstract

Provided is a photodynamic therapy device, comprising: a light source (2), further comprising a plurality of LEDs (4); a photodetector (3) which detects, as a light intensity distribution of the light which the light source (2) emits, the intensity of the light which each of the plurality of LEDs (4) emits; and a light intensity distribution control circuit (6) which controls a current which drives each of the plurality of LEDs (4) such that the intensity of the light which each of the plurality of LEDs (4) emits which is detected by the photodetector (3) falls within a prescribed range.

Description

technical field [0001] The present invention relates to a photodynamic therapy device for treating an affected part by exciting a photosensitive substance administered to a patient and remaining in the patient by irradiation with light of a specific wavelength. Background technique [0002] Photodynamic therapy (Photo Dynamic Therapy; PDT) is a chemical reaction that occurs by irradiating light of a specific wavelength on a photosensitive substance that has an affinity for abnormal cells or tumors, and generates active oxygen through this chemical reaction, A treatment that uses its bactericidal ability to cause necrosis of abnormal cells or tumors. Since it does not damage normal cells, it has recently attracted attention from the viewpoint of QOL (Quality Of Life). [0003] In addition, as a light source for PDT, laser light has become the mainstream. Reasons for this include that laser light is monochromatic light and can efficiently excite a photosensitive substance wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/06
CPCA61B2018/00654A61B2018/00672A61B2018/00678A61B2018/00898A61N2005/0628A61N2005/0643A61N2005/0662A61N5/062A61N2005/0652A61N5/06H10K50/00A61N5/0601
Inventor 森淳河西秀典
Owner SHARP KK