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Light-irradiation device and light-irradiation system

A technology of light irradiation and equipment, applied in phototherapy, radiation therapy, medical science, etc., can solve problems such as insufficient light penetration and inability to apply cancer

Pending Publication Date: 2021-12-17
ASAHI INTECC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The predetermined wavelength region including 690nm exemplified above is also called the spectral window of the living body, and although it is a wavelength region in which the light absorbed by the components of the living body is less than other wavelength regions, the light from the body surface Insufficient penetration of light during irradiation, so there is a problem that it cannot be applied to deep-seated cancers in the body

Method used

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  • Light-irradiation device and light-irradiation system
  • Light-irradiation device and light-irradiation system
  • Light-irradiation device and light-irradiation system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0045] figure 1 It is an explanatory diagram illustrating the configuration of the light irradiation device 1 of the first embodiment. The photoirradiation device 1 is used by being inserted into the lumen of a living body called vascular system, lymphatic system, biliary system, urinary tract system, airway system, digestive system, secretory gland, and reproductive organ, and is used from the living body lumen. A device that radiates light toward living tissue. The photoirradiation device 1 can be used, for example, in PDT (Photodynamic Therapy) or NIR-PIT (Near-infrared photoimmunotherapy). In the following embodiments, laser light is exemplified as an example of light, but it is not limited to laser light. For example, LED light and white light may be used to constitute the light irradiation device 1 .

[0046] exist figure 1 In , an axis passing through the center of the light irradiation device 1 is represented by an axis O (one-dot chain line). Hereinafter, the axis...

no. 2 approach ＞

[0064] Figure 4 It is an explanatory diagram illustrating the structure of a light irradiation device 1A of the second embodiment. 1 A of light irradiation apparatuses of 2nd Embodiment are equipped with the front-end side marker part 132 and the base-end side marker part 133 in addition to the structure demonstrated in 1st Embodiment. The front end side marker part 132 is provided on the front end side of the marker part 131 and functions as a mark indicating the position of the front end part of the marker part 131 . The proximal marker portion 133 is provided on the proximal side of the marker portion 131 and functions as a mark indicating the position of the proximal end of the marker portion 131 . exist Figure 4 In the example, the front-end side marker part 132 is provided close to the front-end part of the light irradiation part 139, and the position of the front-end side marker part 132 in the axis O direction (X-axis direction) does not overlap with the position o...

no. 3 approach ＞

[0068] Figure 5 It is an explanatory diagram illustrating the structure of the light irradiation device 1B of the third embodiment. The light irradiation device 1B of the third embodiment includes the distal-side marker unit 132 and does not include the proximal-side marker unit 133 in the structure described in the second embodiment. In this way, the number of other markers provided in the light irradiation device 1B may be one, or may be three or more. Also according to the light irradiation device 1B of the third embodiment as described above, the same effects as those of the first embodiment described above can be exhibited. In addition, in the light irradiation device 1B of the third embodiment, the radiation-opaque front-end side marker unit 132 provided on the front-end side of the marker unit 131 is further provided, so that the operator can easily The position of the front end side of the marker part 131 can be accurately grasped, and the positioning of the light i...

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Abstract

A medical light-irradiation device provided with: a long main body part; a light-irradiation part which is provided on one portion of the side surface at the side of the tip of the main body part and irradiates light towards the outside; and a marker part which is provided on the side of the tip of the main body part, is radioopaque, and the shape of which when viewed from an arbitrary direction enables the location thereof in the circumferential direction of the light-irradiation part to be identified.

Description

technical field [0001] The present invention relates to a light irradiation device and a light irradiation system. Background technique [0002] In cancer treatment, surgery, radiation, and drug (chemical) methods are used alone or in combination, and each technique has been developed in recent years. However, there are still many cancers that have not yet found satisfactory treatment techniques, and the development of further treatment techniques is expected. As one of cancer treatment techniques, a method called PDT (Photodynamic Therapy: Photodynamic Therapy) is known. In PDT, active oxygen is generated in cancer cells by light irradiation after intravenous injection of a photosensitive substance, and the cancer cells are killed (see, for example, Non-Patent Document 1). However, PDT has low selectivity for the integration of photosensitive substances into cancer cells, and the degree of side effects due to absorption by normal cells has become a problem, and it has not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/098A61N5/06A61N5/067
CPCA61N5/0601A61N5/062A61N2005/063A61B2090/3966A61B18/24A61B2018/208A61B2018/2272
Inventor 桂田裕子塚本俊彦
Owner ASAHI INTECC CO LTD