Two-Piece Wound Dressing With Light-Switchable Adhesive Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional light switchable adhesive dressings for negative-pressure wound therapy require additional components and steps for activation, increasing cost and decreasing ease of use, and may be lost or damaged by patients.
Innovation Solution
A two-piece wound dressing system with a pad and drape, each containing a light switchable adhesive, allows for decoupling to facilitate direct activation of the adhesive using integrated or existing light sources, reducing the need for external devices and simplifying the removal process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate light source device is used to activate the light switchable adhesive, then the adhesive can be switched between tacky and non-tacky states, but the device complexity increases and patients may lose or damage the separate device
Solution Approach 1:
The patent integrates the light source directly into the wound dressing assembly, merging the activation function with the dressing itself. The light source is positioned within the dressing structure to activate the light switchable adhesive, eliminating the need for separate external activation devices and reducing the risk of loss or damage.
2Reliability
If light blocking layers are used to protect the light switchable adhesive from ambient light, then the adhesive is protected from unintended activation, but the time required for removal increases as technicians must direct UV light past the blocking layers
Solution Approach 1:
The patent segments the dressing into multiple pieces that can be independently removed. This allows the technician to remove portions of the dressing containing light blocking layers separately from other portions, reducing the time required to activate the adhesive compared to having to direct light through entire multi-layer structures.
3Stability of the object's composition
If the pad is attached to the drape during activation, then the structure remains stable, but access to activate the adhesive becomes more difficult
Solution Approach 1:
The patent creates a dynamic structure where the pad can be detached from the drape. This allows the dressing to transition from a stable attached state during application to a separable state during activation and removal, providing both structural stability when needed and accessibility when needed.
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 minimizes cost and time required for dressing changes by integrating light sources within the therapy system, enabling easier and more patient-friendly removal without additional components.
Implementation Method 1
Light switchable (switched or light switched) adhesives are pressure sensitive adhesives that are 'switchable' from a tacky state to a non-tacky or low-tack state in which the switched adhesive has a reduced peel strength relative to the peel strength of the adhesive before switching
Implementation Method 2
a light source configured to emit light to activate the light switchable adhesive
Data Source
AI summary
This disclosure describes devices, systems, and methods related to two-piece dressings. In one aspect, a two-piece dressing includes a drape including a first light switchable adhesive, and a pad. The pad includes a second light switchable adhesive configured to couple the pad to the drape and a light source configured to emit light and activate at least the second light switchable adhesive. In another aspect a two-piece dressing includes a drape and a pad. The pad is configured to be coupled to the drape and to a light source, and the pad includes a light switchable adhesive configured to couple the pad to the drape. The light source is configured to emit light to activate the light switchable adhesive to decouple the pad from the drape, and the pad is configured to direct the light to activate second light switchable adhesive to decouple the drape from a tissue site.