Corneal Treatment Apparatus with Sensor Feedback
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Solution Overview
Problem
Current corneal collagen crosslinking treatments using UV radiation are potentially harmful and require specialized ophthalmologists due to the need for precise settings, limiting their use to general practitioners.
Innovation Solution
An apparatus with a sensor-enabled applicator head that automatically activates a non-toxic photoactivatable therapeutic agent, such as riboflavin, only when in close proximity to the cornea and with sufficient saturation, ensuring safe and effective treatment by preventing over-exposure and misuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UV radiation is applied with strong intensities to treat corneal diseases, then treatment effectiveness is improved, but ocular tissue damage increases
Solution Approach 1:
The patent employs feedback control through sensors that detect corneal saturation with riboflavin and monitor treatment progress. The UV radiation intensity and duration are automatically adjusted based on real-time feedback from the cornea's absorption characteristics, ensuring effective treatment while preventing over-exposure and tissue damage.
Solution Approach 2:
The patent utilizes parameter changes by monitoring the cornea's optical properties (absorption and fluorescence) during treatment. The system dynamically adjusts UV radiation parameters (intensity, duration, wavelength) based on measured changes in corneal riboflavin saturation, optimizing treatment effectiveness while minimizing harmful effects.
2Reliability
If precise settings are required for UV radiation application, then treatment safety is improved, but device complexity and operational difficulty increase
Solution Approach 1:
The patent implements self-service functionality where the apparatus automatically determines optimal treatment parameters by measuring the cornea's riboflavin saturation and treatment response. The system self-adjusts UV radiation settings without requiring manual input from the operator, eliminating complex settings while maintaining high safety standards.
Solution Approach 2:
The patent replaces manual mechanical adjustment of treatment parameters with automated optical and electronic control systems. Sensors detect corneal properties and electronically control UV radiation delivery, substituting complex mechanical setting mechanisms with automated detection and control systems that simplify operation.
3Measurement precision
If specialized ophthalmologists perform the treatment, then treatment precision is improved, but accessibility to general practitioners decreases
Solution Approach 1:
The apparatus performs self-calibration and automatic parameter optimization by measuring corneal riboflavin saturation and treatment response in real-time. This eliminates the need for specialized operator knowledge, allowing general practitioners to perform treatments with consistent precision through automated guidance.
Solution Approach 2:
The system performs preliminary measurements of corneal properties and riboflavin saturation before treatment begins. Based on these preliminary data, the apparatus pre-configures optimal treatment parameters, ensuring precision from the start without requiring operator expertise in parameter selection.
4Productivity
If UV radiation is applied without monitoring saturation, then treatment speed is improved, but harmful over-exposure increases
Solution Approach 1:
The patent implements continuous feedback monitoring during treatment by measuring corneal fluorescence and absorption in real-time. This allows the system to detect riboflavin saturation levels and automatically stop or adjust UV radiation delivery, preventing over-exposure while maintaining fast treatment throughput through automated control.
Solution Approach 2:
The system maintains continuous monitoring and treatment action throughout the procedure, with no interruption between riboflavin application and UV irradiation. The continuous feedback loop ensures that treatment proceeds at optimal speed while real-time detection of saturation prevents harmful over-exposure.
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
The apparatus allows general ophthalmologists to safely and effectively treat corneal diseases by ensuring proper placement and saturation of the therapeutic agent, reducing the risk of damage from UV radiation and enabling wider accessibility.
Implementation Method 1
a radiation source capable of exciting a non-toxic substance... the combined application of Riboflavin and UV exposure causes a cross-linking of the collagen... by generating free radicals that disrupt
Implementation Method 2
presumably by generating free radicals that disrupt... the combined application of Riboflavin and UV exposure causes a cross-linking of the collagen increasing the mechanical strength of the cornea
Implementation Method 3
a first sensor capable of measuring a signal dependent on a position of the applicator head relative to the cornea... when irradiated, such a chromophore emits radiation at a different, longer wavelength (fluorescence)
Data Source
AI summary
An apparatus for the treatment and/or prevention of corneal diseases includes an applicator head. The applicator head includes a radiation source capable of exciting a non-toxic chromophore. A control is operable to activate the radiation source to radiate, wherein at least one of the following two conditions is met: the applicator head includes a sensor capable of measuring a signal dependent on a position of the applicator head relative to the cornea; or, the applicator head is configured to be in physical contact with the cornea. The control is operable to activate the radiation source to radiate depending on a signal measured by the sensor or to activate the radiation source when the applicator head touches the cornea, respectively.