Laser Feedback Device for Retinal Lesion Mapping
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Solution Overview
Problem
Current laser therapy methods for macular degeneration struggle to accurately identify lesion positions and treat them locally without causing laser burns, especially in the delicate retinal tissue, and lack effective methods for repeated treatments if the disease recurs.
Innovation Solution
A laser feedback device that includes a guide beam irradiation unit, a reflection unit, a laser irradiation unit, and an image acquisition unit to map retinal images and construct macular images, allowing for precise identification and low-energy laser treatment of lesions, avoiding burns and enabling repeated treatments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-energy laser is used to treat macular lesions, then treatment effectiveness is improved, but risk of laser burn and vision loss increases
Solution Approach 1:
The patent applies parameter changes by precisely controlling laser irradiation parameters (energy level, duration, position) to treat macular lesions effectively while avoiding laser burns. The system adjusts these parameters based on real-time feedback from optical coherence tomography imaging, enabling safe and effective treatment of macular diseases.
2Reliability
If conventional laser photocoagulation is used, then new blood vessel growth is suppressed, but the coagulated area is too large causing damage to vision-critical macular regions
Solution Approach 1:
The patent applies local quality by enabling highly localized laser treatment of macular lesions. The optical coherence tomography imaging system provides precise localization of pathological changes, allowing laser photocoagulation to be applied only to the specific lesion area rather than large surrounding regions, thus suppressing abnormal blood vessel growth while preserving vision-critical macular tissue.
3Loss of information
If contrast agent administration and continuous fluorescein angiography are used to identify lesion positions, then diagnostic information is obtained, but lesion position cannot be identified after 2 weeks making re-operation difficult
Solution Approach 1:
The patent applies copying by creating permanent digital copies of retinal images through optical coherence tomography. These digital images serve as lasting records of lesion positions and treatment areas, replacing the temporary information provided by contrast agents and fluorescein angiography that fade after 2 weeks. The digital records enable accurate identification of lesion positions for potential re-operations.
4Measurement precision
If multiple retinal images are acquired and mapped to construct macular images, then lesion and irradiation position identification accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing an optical coherence tomography system that performs multiple functions: imaging retinal layers, locating lesions, guiding laser irradiation, and recording treatment positions. This multi-functional approach achieves high measurement precision for lesion identification while avoiding the complexity of separate specialized systems for each function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate identification and localized treatment of lesions with low-energy laser irradiation, reducing the risk of vision loss and allowing for potential re-treatment if the disease recurs by mapping retinal images and recording irradiation positions.
Implementation Method 1
a guide beam irradiation unit for irradiating a guide beam to an eyeball of a patient
Implementation Method 2
a reflection unit which is arranged next to the guide beam irradiation unit
Implementation Method 3
an image acquisition unit for receiving a reflection beam reflected from the eyeball and refracted by the reflection unit
Implementation Method 4
a laser irradiation unit for irradiating laser to the eyeball
Implementation Method 5
an image acquisition unit for receiving a reflection beam reflected from the eyeball and refracted by the reflection unit and for acquiring at least one retinal image of a retina of the eyeball
Implementation Method 6
an image mapping unit for mapping the at least one retinal image to construct a macular image which is a full image of a macula of the eyeball
Data Source
AI summary
Proposed are a laser feedback device for irradiation to an eyeball and a laser feedback method using the same, the laser feedback device comprising: a guide beam irradiation unit for irradiating a guide beam to an eyeball of a patient; a reflection unit positioned adjacent to the guide beam irradiation unit; a laser irradiation unit for irradiating a laser into the eyeball; an image acquisition unit that receives a reflection beam reflected from the eyeball and refracted through the reflection unit and acquires at least one retinal image of the retina of the eyeball; and an image mapping unit that maps at least one retinal image to construct a macular image which is a full image of the macula of the eyeball.