Endoscope illumination system for a fluorescent agent

By separating the excitation light and fluorescence spectrum using a dual-light source illumination device and an optical filter, the conflict between imaging and treatment in NIR-PIT is resolved, enabling efficient simultaneous fluorescence imaging and treatment, and optimizing the operational efficiency of the endoscopic system.

CN115996663BActive Publication Date: 2026-07-14宾得医疗有限责任公司
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Patent Information

Application Number
CN202180046248.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-07-03
Filing Date
2021-06-24
Publication Date
2026-07-14
Estimated Expiration
2041-06-24

AI Technical Summary

Technical Problem

In existing technologies, near-infrared photoelectroimmunotherapy (NIR-PIT) suffers from a conflict between the excitation light and fluorescence spectra when using IR700 fluorescence imaging and treatment, making it difficult to achieve efficient imaging and treatment simultaneously.

Method used

A dual-light source illumination device is used, with one light source having a peak wavelength of 660-699nm for fluorescence imaging and the other light source having a peak wavelength of 689-705nm for treatment. The excitation light and fluorescence spectrum are separated by a dichroic mirror and an optical filter, and the light source switching is independently controlled to optimize imaging and treatment effects.

Benefits of technology

This enables simultaneous high-efficiency fluorescence imaging and treatment within an endoscopic system, reducing surgical time, alleviating the burden on patients and medical personnel, and improving treatment efficiency.

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Abstract

The invention provides an illumination device for outputting an output light, the illumination device comprising a first light source, a second light source; the first light source being configured to emit first light at a first peak wavelength in a first range of 660 nm to 699 nm, the second light source being configured to emit second light at a second peak wavelength in a second range of 689 nm to 705 nm; wherein the second peak wavelength is at least 5 nm larger than the first peak wavelength; the second light source being configured to be turned on and off independently of the first light source; the device being configured to output the first light as the output light in case the second light source is off, and to output the first light and the second light as the output light in case the second light source is on.
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