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Light diffusing device

A technology of optical fiber and optical port, which is applied in the direction of optics, optical fiber light guide, cladding optical fiber, etc.

Inactive Publication Date: 2011-09-28
ADVANCED PHOTODYNAMIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this device is that the intensity of the distal regions of the light emitting area is less than the closer regions of the light emitting area of ​​the device

Method used

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Examples

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Embodiment Construction

[0082] The details shown herein are by way of example only and for purposes of explanation of the invention and have been given in order to provide what is believed to be the most useful and understandable description of the principles and concepts of the invention. In this regard, no attempt is made to show structural details of the invention in greater detail than is required for a basic understanding of the invention, and the description, taken in conjunction with the drawings, makes apparent to those skilled in the art how several aspects of the invention may be practically practiced. form.

[0083] the term

[0084] 10 fibers

[0085] 100 light diffusing device

[0086] 102 light emitting part

[0087] 102a end (light emitting part)

[0088] 102b near end (light emitting part)

[0089] 104 optical ports

[0090] 105 proximal

[0091] 106 end

[0092] 108 cladding

[0093] 110 core fiber

[0094] 112 connector

[0095] 114 end parts

[0096] 200 light diffusing d...

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PUM

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Abstract

A light diffusing device for use in photodynamic therapy has a progressively distally increased exposed amount of core fiber defining a light emitting section. Excessive light energy emission is thus prevented access to proximal locations and provides an increased amount of available light energy at distal locations, thus permitting an even emission of light energy along the light emitting section.

Description

[0001] government license [0002] The U.S. Government has a paid license to this invention and, under limited conditions, requires the patentee to license others on reasonable terms as specified in Grant No. 2R44 A1041866-02A2 awarded by the National Institute of Health: National Institute of Allergy and Infectious Diseases right. technical field [0003] The present invention relates to devices for light delivery, as used in photodynamic therapy, for delivering light energy to a treatment site. Background technique [0004] Photodynamic therapy (PDT) is a medical treatment method that involves the use of photosensitizers that are exposed to light of specific wavelengths, thereby generating oxygen free radicals that lead to the destruction of cancer cells, bacteria, viruses or fungi. A PDT system consists of three main parts: a photosensitizer, a light source (typically a laser) and a light delivery device (typically fiber-based). [0005] PDT involves the use of photose...

Claims

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Application Information

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IPC IPC(8): G02B6/028
CPCA61B5/411A61N5/0603A61B5/0059A61B1/07G02B6/001A61B1/0005A61N5/062G02B27/09G02B6/0005A61N5/0601A61B1/0017G02B6/02295G02B6/028
Inventor 罗纳德·R·齐默曼恩米瑞尔·A·比耶尔史蒂文·H·梅施
Owner ADVANCED PHOTODYNAMIC TECH
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