Check patentability & draft patents in minutes with Patsnap Eureka AI!

Quasi-phase matching photodynamic therapeutic and diagnostic laser light source

A technology of photodynamic therapy and quasi-phase matching, which is applied in the directions of diagnosis, treatment, and lasers, and can solve problems such as inability to adjust wavelength, clamping of wavelength tunability, and low probability

Inactive Publication Date: 2004-11-24
APPLIED BIOPHOTONIC
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tunability of the wavelength emitted by semiconductor lasers is limited by the limitations of material properties, and large wavelength adjustments cannot be made. Therefore, the probability of the emitted wavelength being exactly the specific absorber of the photosensitizer is naturally low.
In addition, because the laser emitting area of ​​the semiconductor laser is very small, the problem of heat dissipation becomes more serious when it operates at high power

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Quasi-phase matching photodynamic therapeutic and diagnostic laser light source
  • Quasi-phase matching photodynamic therapeutic and diagnostic laser light source
  • Quasi-phase matching photodynamic therapeutic and diagnostic laser light source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0115] The photodynamic therapy and diagnostic laser system device disclosed by the present invention is as follows figure 1 As shown, at least a laser system 2 , a lens coupling system 8 and an optical transmission output device 10 , 12 are included. The laser system 2 is composed of a pump laser 4 , a coupling lens 5 and a wavelength converter 6 . The wavelength converter 6 is used to convert the specific wavelength emitted by the pump light 4 to at least one wavelength of laser light suitable for photodynamic therapy (PDT) or diagnosis (PDD). The laser light generated by the conversion is then effectively focused into the optical fiber 10 of the optical transmission output device through the lens coupling system 8 and transmitted to the optical pen system 12 of the optical transmission output device for proper focusing and output to a specific target point, such as Tumor tissue with photosensitizing drugs. The photodynamic therapy and diagnostic laser system device can al...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a laser system equipment, in particular, it is a laser light source for medical photodynamic therapy and diagnosis. Said laser system equipment includes a laser pump source which can emit at least a specific laser light wavelength for wavelength converter in the pump-laser resonant cavity system; a wavelength converter which uses a quasi-phase-matched technique to convert said specific laser light wavelength into at least one laser light wavelength applicable to photodynamic therapy and diagnosis; a laser resonant cavity system, said wavelength converter is placed in its cavity interior and used for increasing laser light intensity output; and an optical transmission output device for receiving and transmitting laser light outputted by said laser resonant cavity system.

Description

(1) Technical field [0001] The invention relates to a laser system device, especially a laser light source suitable for medical photodynamic therapy (Photodynamic Therapy; PDT) and diagnosis (photodynamic diagnosis; PDD). (2) Background technology [0002] Malignant tumors have become the leading cause of death among Chinese people. Accurate diagnosis and timely treatment of early malignant tumors are the prerequisites for good prognosis. In the diagnosis of malignant tumors, the fluorescence diagnostic method with the addition of fluorescent dyes as photosensitizers provides quite reliable diagnostic results. This method is known as photodynamic diagnosis (PDD) method. Commonly used photosensitizers, such as hematoporphyrinderivative (HpDs) and prodrug 5-aminolevulinic acid (ALA) for hem-biosynthesis, are harmful to tissue blood vessels and Metabolic proliferative activity is very sensitive, allowing them to have a high accumulation and residence time in tumor tissue. S...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00A61B18/20A61N5/067G02F1/35H01S3/00
Inventor 黄衍介林彦颖陈进庭
Owner APPLIED BIOPHOTONIC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com