Subthreshold Laser Retinal Treatment via Heat Shock Protein Activation
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Solution Overview
Problem
Conventional retinal photocoagulation treatments for conditions like diabetic retinopathy are painful, cause tissue damage, and lead to complications such as visual loss, inflammation, and scarring, making them ineffective and risky, especially for sensitive areas like the fovea.
Innovation Solution
A process involving controlled application of radiation with specific wavelengths (570 nm to 1300 nm) and power levels to heat retinal tissue without causing damage, stimulating heat shock protein activation for therapeutic effects without visible burns or tissue destruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional retinal photocoagulation is used to treat retinal diseases, then therapeutic effect is achieved through tissue damage and scarring, but tissue destruction, pain, and visual loss occur
Solution Approach 1:
The patent changes the fundamental parameter of energy delivery by using subthreshold laser parameters (lower power, shorter duration) that cause thermal stimulation without reaching the threshold for tissue destruction. This parameter change transforms the mechanism from destructive photocoagulation to constructive thermal stimulation, achieving therapeutic effects without the harmful side effects of tissue damage and scarring.
Solution Approach 2:
The patent converts the harmful thermal effect of laser energy into a beneficial stimulus by controlling the energy delivery to activate heat shock proteins and promote tissue repair. Instead of using thermal energy to destroy tissue, the invention uses the same thermal mechanism to stimulate protective and regenerative responses, turning a potentially harmful effect into a therapeutic benefit.
2Reliability
If conventional photocoagulation is applied to treat retinal pathology, then disease treatment is achieved, but treatment pain and inflammation occur
Solution Approach 1:
The patent applies partial action by delivering only the minimum necessary energy to achieve the therapeutic effect without causing tissue damage. By using subthreshold parameters, the laser energy is sufficient to stimulate heat shock protein activation and promote repair, but insufficient to cause the destructive effects that lead to pain and inflammation. This partial action approach achieves treatment goals while avoiding excessive harmful effects.
3Reliability
If conventional laser therapy is used to create retinal scars, then therapeutic benefit is achieved, but visual acuity reduction occurs
Solution Approach 1:
The patent substitutes the mechanical/physical mechanism of laser-induced tissue scarring with a biological mechanism of heat shock protein activation. Instead of relying on physical tissue destruction and scar formation to achieve therapeutic benefits, the invention uses thermal stimulation to trigger molecular and cellular repair processes, thereby achieving the same therapeutic outcome through a different mechanism that preserves visual acuity.
Data Source
AI summary
A process for heat treating biological tissue includes generating treatment radiation having a predetermined wavelength and average power. The treatment radiation is applied to biological tissue, such as retinal tissue, such that at least one treatment spot is formed on the biological tissue and the biological tissue is heat stimulated sufficiently to create a therapeutic effect without destroying the tissue.