Selective-Transparency Wound Dressing for Controlled Wound Viewing
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Solution Overview
Problem
Existing wound dressings are either partially or fully occlusive, making it difficult for clinicians to view the progress of treatment and requiring patients to constantly see their wounds, which can cause anxiety.
Innovation Solution
A wound dressing system with a selectively transparent drape layer that can switch between opaque and transparent states using a disclosing liquid, allowing clinicians to view the wound when needed and occlude it at other times, and optionally incorporating a negative pressure wound input device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a wound dressing is made opaque to reduce patient anxiety, then patient comfort is improved, but clinician ability to monitor wound healing is worsened
Solution Approach 1:
The drape layer transitions from opaque to transparent dynamically when exposed to disclosing liquid, allowing the wound dressing to adapt its transparency based on clinical needs. This dynamic property resolves the contradiction by enabling both patient comfort (opaque state) and clinician monitoring (transparent state) at different times.
Solution Approach 2:
The optical properties of the drape layer are changed by altering its physical state through exposure to disclosing liquid with specific refractive index. This parameter change enables the material to switch between transparent and opaque states, simultaneously addressing both patient comfort and clinician monitoring requirements.
2Loss of information
If a wound dressing is made transparent to allow clinician monitoring, then wound visualization is improved, but patient anxiety is worsened due to constant visibility
Solution Approach 1:
The drape layer's transparency is not fixed but dynamic, switching based on exposure to disclosing liquid. This allows clinicians to monitor wounds when needed while maintaining patient comfort during normal wear, resolving the contradiction between monitoring needs and patient psychological comfort.
Solution Approach 2:
The disclosing liquid acts as an intermediary that temporarily changes the optical properties of the drape layer. This mediator enables controlled transparency only when applied, allowing clinician monitoring without requiring the dressing to be permanently transparent, thus maintaining patient comfort.
3Reliability
If a fully occlusive dressing is used to protect the wound, then wound protection is improved, but fluid level monitoring by clinicians is worsened
Solution Approach 1:
The drape layer provides occlusive protection during normal use but becomes transparent when exposed to disclosing liquid, allowing clinicians to monitor fluid levels. This dynamic switching resolves the contradiction between maintaining wound protection and enabling fluid monitoring.
Solution Approach 2:
The optical parameters of the drape layer are changed through exposure to disclosing liquid with specific refractive index properties. This parameter change enables fluid level visualization while maintaining the occlusive protective function of the dressing during non-monitoring periods.
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 clinicians to accurately monitor wound healing and fluid levels while reducing patient anxiety by providing controlled visibility of the wound, and allowing for the placement and location of biosensors under the drape.
Implementation Method 1
a drape layer having a material with a refractive index substantially within a range of 1.3 to 1.55... when a disclosing liquid with a refractive index within a range of the refractive index of the drape layer is applied to the drape layer
Data Source
AI summary
A selectively transparent wound therapy dressing, system, and method of use are provided. The dressing may include conformable foam and drape layers, wherein the drape layer has a refractive index substantially within a range of a disclosing liquid. When the disclosing liquid is applied to the drape layer, the drape layer may switch from opaque to transparent. Subsequent evaporation of the disclosing liquid may return the drape layer to an opaque state. Some embodiments provide for paired use with a negative pressure source input device. The method of use provides selective visibility of a treatment site, and reduces the amount of time in which a patient views an acute or traumatic wound or injury.