Pressure Actuator with Shape Memory Material and Localized Heating
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Solution Overview
Problem
Conventional pressure garments are inadequate for facilitating healing and cosmetic processes, as they fail to provide controlled and localized pressure effectively.
Innovation Solution
A pressure actuator incorporating shape memory material integrated with a carrier structure and heating elements, allowing for localized shape change and controlled pressure application through heating, enabled by active matrix addressing and control circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional pressure garments are used, then pressure can be applied to the body, but the pressure cannot be controlled locally or dynamically
Solution Approach 1:
The pressure garment is divided into multiple independent pressure actuators, each capable of being controlled separately. Each actuator contains shape memory material and heating elements that can be individually addressed through active matrix addressing, enabling localized pressure control at specific body regions without affecting other areas.
Solution Approach 2:
The pressure garment transitions from a static structure to a dynamic system where pressure can be varied in real-time. Heating elements can be activated or deactivated electronically to dynamically adjust the shape and pressure output of shape memory material, allowing the garment to adapt to changing therapeutic requirements.
2Manufacturing precision
If heating elements are integrated with shape memory material, then local shape change can be achieved, but the device complexity increases
Solution Approach 1:
Heating elements are directly integrated with shape memory material within each pressure actuator, combining the thermal activation function and shape change function into a single unified component. This integration eliminates the need for separate thermal control mechanisms and simplifies the overall structure while maintaining precise local shape control.
Solution Approach 2:
The mechanical system for controlling pressure is replaced with an electronic-thermal system. Instead of mechanical actuators or pneumatic systems, electrical current is applied to heating elements to thermally activate shape memory material, achieving precise control through electrical signals rather than mechanical mechanisms.
3Adaptability or versatility
If pressure garments are made flexible, then comfort and adaptability improve, but control precision decreases
Solution Approach 1:
The flexible garment maintains overall flexibility while incorporating localized rigid or structured elements within pressure actuators. The shape memory material and heating elements are confined to specific discrete locations, allowing the garment to conform to body contours generally while maintaining precise pressure control at specific treatment points.
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 precise and dynamic control of pressure on the body, facilitating healing and cosmetic processes by allowing localized and timed pressure application, improving the effectiveness of pressure garments for various applications.
Implementation Method 1
a plurality of heating elements in the vicinity of the shape memory material that is configured to at least locally vary the shape of the shape memory material that is in the vicinity of the heating element
Implementation Method 2
shape memory material, integrated with and/or attached to the carrier structure, and a plurality of heating elements in the vicinity of the shape memory material that is configured to at least locally vary the shape of the shape memory material
Data Source
Figure 1~3
Figure 4~5B
Figure 6~7C
AI summary
Pressure actuator, provided with a carrier structure, shape memory material, integrated with and/or attached to the carrier structure, and at least one heating element in the vicinity of the shape memory material that is configured to at least locally vary the shape of the shape memory material that is in the vicinity of the heating element. In specific embodiments, the pressure actuator is provided with at least one heating element separate from the shape memory material, which at least one heating element may be configured to vary temperature within the shape memory material locally.