Micropulsed Light Therapy for Sublethal Retinal Tissue Heating
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Solution Overview
Problem
Existing treatments for biological tissues, particularly retinal tissue, often cause damage or permanent destruction while attempting to treat diseases, and there is a need for a method to therapeutically elevate tissue temperature without causing harm.
Innovation Solution
Applying controlled micropulses of electromagnetic radiation, such as laser light, ultrasound, or radiofrequency, to raise tissue temperature selectively and stimulate heat shock protein activation, maintaining average temperature below damaging levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional laser treatment is applied to retinal tissue, then therapeutic effect is achieved, but tissue damage or permanent destruction occurs
Solution Approach 1:
The patent applies periodic pulsed laser energy delivery with specific duty cycles (e.g., 1-10% duty cycle) to create repeated thermal cycles that stimulate heat shock protein activation without causing permanent tissue damage. The pulsed nature allows heat dissipation between pulses, achieving therapeutic effects while avoiding the harmful continuous heating of traditional laser treatment.
Solution Approach 2:
The patent fundamentally changes the temporal parameters of laser delivery by using micropulses lasting microseconds to milliseconds with specific duty cycles, rather than continuous or long-pulse delivery. This parameter change enables temperature elevation to therapeutic levels (e.g., 10-40°C) without reaching damaging thresholds, as the short pulse duration prevents excessive heat accumulation.
2Reliability
If tissue temperature is elevated to achieve therapeutic effect, then heat shock protein activation is stimulated, but permanent tissue damage may occur
Solution Approach 1:
The patent uses periodic pulsed energy delivery with duty cycles of 1-10% to create repeated thermal cycles that stimulate heat shock protein activation. The periodic nature allows the tissue to cool between pulses, maintaining average temperature rise below damaging levels (e.g., <6°C over several minutes) while achieving peak temperatures sufficient for therapeutic effect.
Solution Approach 2:
The patent applies partial action by delivering energy in controlled micropulses that raise temperature to therapeutic levels (e.g., 10-40°C) without reaching excessive temperatures that would cause damage. The pulsed delivery ensures the average temperature rise remains below damaging thresholds while still achieving sufficient peak temperatures for heat shock protein activation.
3Productivity
If continuous laser energy is applied, then treatment duration is reduced, but tissue damage increases
Solution Approach 1:
The patent uses periodic pulsed delivery with specific duty cycles (1-10%) to achieve treatment effects more efficiently than traditional continuous laser treatment. The repeated pulsed cycles stimulate heat shock protein activation and cellular repair mechanisms, achieving therapeutic outcomes in shorter effective treatment times while avoiding the tissue damage associated with continuous energy delivery.
Solution Approach 2:
The patent replaces the continuous mechanical heating approach of traditional laser treatment with a pulsed approach that utilizes the body's natural thermal cycling and heat shock response mechanisms. This substitution allows treatment to proceed more efficiently by leveraging biological repair mechanisms rather than relying solely on continuous thermal damage and regeneration.
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
This method effectively stimulates heat shock protein activation, promoting protein repair and therapeutic effects without damaging the tissue, applicable to retinal diseases and potentially other conditions.
Implementation Method 1
Applying controlled micropulses of electromagnetic radiation, such as laser light, ultrasound, or radiofrequency, to raise tissue temperature selectively
Implementation Method 2
a light beam can be generated and applied to the retinal tissue cells such that it is therapeutic, yet sublethal to retinal tissue cells
Implementation Method 3
Applying controlled micropulses of electromagnetic radiation, such as laser light, ultrasound, or radiofrequency, to raise tissue temperature selectively
Implementation Method 4
Applying controlled micropulses of electromagnetic radiation, such as laser light, ultrasound, or radiofrequency, to raise tissue temperature selectively
Data Source
AI summary
A process for heat treating biological tissue includes providing a plurality of energy emitters formed into an array. Treatment energy in the form of light beams is generated from the plurality of emitters and applied to target tissue. The treatment energy has energy and application parameters selected so as to raise the target tissue temperature sufficiently to create a therapeutic effect while maintaining an average temperature of the target tissue over several minutes at or below a predetermined temperature so as not to destroy or permanently damage the target tissue.