Switchable Adhesive Drape for Wearable Therapy Detachment
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Solution Overview
Problem
Current tissue treatment systems face challenges in securely attaching and detaching wearable therapy systems from dressings without damaging the treatment unit or the tissue site, particularly when using adhesive couplings that are difficult to separate without causing damage.
Innovation Solution
A radiation-deactivated adhesive drape with a switchable adhesive layer that can be activated by specific wavelengths of radiation to weaken the bond, allowing for easy detachment of the wearable therapy system from the dressing, utilizing a removable blocking layer and a radiation source within the medical therapy unit to control the exposure of the adhesive layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid coupling is used to secure the wearable therapy system to the dressing, then the connection strength and reliability are improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces rigid mechanical couplings (screws, snaps) with an adhesive bonding system. The adhesive layer provides the necessary connection strength while eliminating complex mechanical structures, thereby reducing device complexity and manufacturing cost.
Solution Approach 2:
The patent employs a switchable adhesive that changes its bonding properties in response to radiation exposure. The adhesive transitions from a strong bonding state to a weakened state when exposed to specific wavelengths, enabling controlled detachment without mechanical complexity.
2Reliability
If a rigid coupling is used to secure the wearable therapy system to the dressing, then the connection strength is improved, but the bulk above the wound site increases
Solution Approach 1:
The adhesive-based coupling system replaces bulky mechanical components with a thin adhesive layer, significantly reducing the volume above the wound site while maintaining connection strength.
Solution Approach 2:
The patent uses a thin adhesive layer (flexible film) to provide the coupling function, eliminating the need for thick rigid mechanical couplings and reducing the overall bulk of the assembly.
3Reliability
If a strong adhesive bond is used to attach the wearable therapy system to the dressing, then the connection strength is improved, but the ease of detachment deteriorates
Solution Approach 1:
The patent employs a dynamic adhesive system that can change its bonding characteristics on demand. The adhesive strength is high during therapy delivery but can be switched to a low-strength state for easy detachment, providing both strong attachment and easy removal.
Solution Approach 2:
The switchable adhesive changes its bonding parameters (strength, viscosity) in response to radiation exposure. This allows the adhesive to provide strong initial bonding and then be easily deactivated for detachment, resolving the contradiction between strong attachment and easy removal.
4Reliability
If a strong adhesive bond is used to attach the wearable therapy system to the dressing, then the connection strength is improved, but the risk of damage to treatment unit or tissue site upon detachment increases
Solution Approach 1:
The dynamic switchable adhesive allows controlled transition from strong bonding to easy detachment. This prevents sudden forceful removal that could damage the treatment unit or tissue site, as the adhesive can be gently deactivated before detachment.
Solution Approach 2:
The adhesive is pre-configured to respond to radiation exposure by weakening its bond. This preliminary deactivation step occurs before physical detachment, ensuring that no excessive force is applied to the treatment unit or tissue site during removal.
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 secure attachment and easy detachment of the wearable therapy system from the dressing without causing damage, maintaining a leak-proof connection and facilitating the use of a 7-day wearable fluid storage and negative pressure system.
Implementation Method 1
a radiation-sensitive adhesive layer having at least one release agent disposed within the adhesive layer, wherein the at least one release agent is configured to weaken a bond of the adhesive layer to a surface upon exposure to at least one of a plurality of radiation wavelengths
Implementation Method 2
the plurality of electromagnetic wavelengths include radio-frequency wavelengths... the plurality of electromagnetic wavelengths include microwaves... the at least one release agent is a nanoferrite configured to deactivate the adhesive layer upon exposure to the at least one of a plurality of electromagnetic wavelengths
Data Source
AI summary
Provided herein is a system and method for coupling a wearable therapy system to a dressing and detaching the wearable therapy system from the dressing. One aspect provides a system including a drape with a switchable adhesive layer and a therapy system adhered to the drape via the switchable adhesive layer. The therapy system includes one or more radiation sources that can emit radiation wavelengths (e.g., light or electromagnetic waves) to impinge upon the adhesive and deactivate the adhesive when it is desired to remove the therapy system from the drape.