Placebo Light Source for Continuous Phototherapy Perception
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Solution Overview
Problem
Conventional phototherapy can be uncomfortable and annoying for patients due to pulsing light, and there is a need to visually indicate the application of invisible phototherapy.
Innovation Solution
A phototherapy system comprising a therapeutic light source and a placebo light source, where the placebo light is a metameric match of the phototherapeutic light, allowing the combined light to be perceived as continuous, thereby reducing discomfort and visually indicating treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phototherapy is delivered as pulsed light to improve treatment efficacy, then therapeutic effect is enhanced, but patient comfort deteriorates due to visible pulsing
Solution Approach 1:
A placebo light source is introduced as an intermediary element that emits visible light to mask the pulsing of the therapeutic light. The placebo light fills in the dark periods between therapeutic pulses, creating a continuous visible appearance while the therapeutic light continues to pulse for optimal treatment effect.
Solution Approach 2:
The placebo light source emits light with a wavelength that appears similar to the therapeutic light to the human eye, creating a visual match. This color matching ensures that the combined light appears continuous and steady to patients, masking the pulsing effect while maintaining therapeutic efficacy.
2Reliability
If phototherapy uses wavelengths outside the visible spectrum to treat skin conditions, then therapeutic effectiveness is improved, but visual indication of treatment is lost
Solution Approach 1:
The placebo light source acts as a visual indicator that compensates for the invisibility of therapeutic wavelengths. It provides a visible metamerically matched light that indicates when treatment is active, while the actual therapeutic light operates at non-visible wavelengths for optimal skin treatment.
Solution Approach 2:
The placebo light emits visible light that is metamerically matched to appear similar to what the therapeutic light would look like if visible. This provides patients with visual feedback that treatment is occurring, even though the actual therapeutic wavelengths are outside the visible spectrum.
3Object-affected harmful factors
If placebo light is added to mask pulsing, then patient comfort is improved, but device complexity increases
Solution Approach 1:
The placebo light source is designed to serve multiple functions: it masks the pulsing of therapeutic light, provides visual indication of treatment activity, and matches the appearance of therapeutic light. This multi-functionality reduces the need for separate indicator lights or additional comfort features.
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 system reduces patient discomfort by masking light pulsations and provides a visual indication of treatment, even when phototherapy is applied outside the visible spectrum.
Implementation Method 1
the placebo light is a metameric match of the phototherapeutic light, allowing the combined light to be perceived as continuous
Data Source
AI summary
Phototherapy systems and methods of phototherapy are described. In an example, the phototherapy system includes a therapeutic light source configured to emit phototherapeutic light towards a subject; and a placebo light source configured to emit placebo light towards the subject. In an embodiment, the light, including the phototherapeutic light and the placebo light, emitted by the phototherapy system is configured to be visually perceived by the subject as continuous light. In an embodiment, the placebo light is a metameric match of the phototherapeutic light. In an embodiment, the method includes emitting the placebo light in a wavelength range and at an intensity configured to be visually perceived by the user as the phototherapeutic light, such as where the placebo light is a metameric match of the phototherapeutic light.