Three-Axis Pressure Units for Active Lymphatic Compression
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Solution Overview
Problem
Existing active compression garments are unable to mimic the complex massage techniques used in manual lymphatic drainage, such as fine stroking movements and varying pressure, making them ineffective for treating conditions like lymphedema.
Innovation Solution
A wearable device with multiple pressure units, each having a movable member with three translational degrees of freedom, can mimic the pressure and movements of a human massage therapist by controlling the movement of these units using a control unit, allowing for adjustable and passive pressure application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If passive elastic materials are used for compression garments, then the garment provides constant compression, but the compression level cannot be modified
Solution Approach 1:
The patent applies dynamics by transitioning from static passive elastic materials to active components that can dynamically adjust compression levels. Shape memory materials and pneumatic bladders enable the garment to change its compression properties in response to user needs or physiological conditions, allowing modification between constant and variable compression states
2Area of stationary object
If pneumatic bladders are used in active compression garments, then larger parts of the limb can be pressurized, but the fine stroking movements of manual massage cannot be mimicked
Solution Approach 1:
The patent segments the compression garment into multiple independent chambers or zones along the limb. Each chamber can be independently controlled to provide different compression levels and movement patterns, enabling both large-area coverage and fine-specific movements simultaneously through coordinated activation of individual segments
Solution Approach 2:
The patent employs shape memory materials that can dynamically change their shape and apply localized pressure in specific patterns. These materials respond to temperature or electrical stimuli to mimic the dynamic, varied pressure patterns of manual massage, transitioning from static to adaptive compression
3Length of moving object
If shape memory materials are used in compression garments, then localized treatment can be provided, but the complex massage patterns of manual therapy cannot be replicated
Solution Approach 1:
The patent integrates multiple functional elements into a single system: shape memory materials provide localized treatment capability, while pneumatic bladders and control systems enable varied massage patterns. This multi-functional design allows the garment to perform both localized and distributed compression with diverse movement patterns
4Adaptability or versatility
If manual lymphatic drainage is performed by a therapist, then complex massage techniques can be applied, but the therapist's presence is required continuously
Solution Approach 1:
The patent implements self-service by equipping the garment with integrated sensors that automatically detect physiological parameters (such as tissue impedance or pressure) and adjust compression levels and patterns accordingly. The control system processes sensor data and autonomously modulates the compression elements, enabling the system to perform complex adaptive massage without continuous human intervention
Data Source
AI summary
The present invention relates to a device for applying pressure to a body part of a subject, wherein the device comprises a plurality of pressure units and each pressure unit comprises a support structure and a movable member having three translational degrees of freedom relative to the support structure, wherein each pressure unit is connected or connectable to a control unit adapted to control the movement of the movable member relative to the support structure of the pressure unit.