Multi-Layer Foam Pressure Offloading Device
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Solution Overview
Problem
Existing pressure ulcer treatments, such as total contact casts and removable walking casts, are limited by economic, convenience, and user interface issues, while other devices fail to effectively keep the heel off the bed, leading to inadequate pressure relief for patients with compromised capillary closure pressures.
Innovation Solution
A pressure offloading device with multiple foam layers of varying densities and indentation force deflection values is designed to support an appendage, keeping it off the bed and incorporating a sensor system for monitoring pressure contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a patient is positioned in a standard lateral position for radiation therapy, then the patient can receive treatment, but the patient experiences high pressure on the iliac crest and shoulder, causing discomfort and potential tissue damage
Solution Approach 1:
The positioning device is divided into multiple independent support components: an iliac crest support assembly with adjustable pad, a shoulder support assembly with adjustable pad, and a positioning board. Each segment can be independently adjusted to distribute pressure away from critical areas while maintaining the lateral positioning required for radiation therapy.
Solution Approach 2:
The device provides localized support at specific pressure points through adjustable pads positioned at the iliac crest and shoulder areas. The pads are designed to contact only the intended body parts, providing targeted pressure relief while maintaining overall positioning stability for treatment.
2Object-affected harmful factors
If a patient is repositioned frequently to relieve pressure, then pressure distribution improves, but treatment time increases and treatment precision may be compromised
Solution Approach 1:
The positioning device is configured before treatment to provide optimal pressure distribution throughout the entire treatment duration. The adjustable pads and support assemblies are positioned and secured in advance, eliminating the need for repositioning during treatment and ensuring continuous pressure relief while maintaining treatment timing.
Solution Approach 2:
The device incorporates adjustable and adaptable components that can be customized to each patient's anatomy. The adjustable pads and support assemblies allow the positioning system to adapt to individual patient needs, providing sustained comfort and pressure distribution without requiring movement during treatment.
3Object-affected harmful factors
If a custom positioning device is designed for each patient, then pressure relief is optimized, but device complexity and setup time increase
Solution Approach 1:
The positioning device is designed as a universal system that can accommodate various patient anatomies and positioning requirements. The adjustable pads, support assemblies, and positioning board work together as an integrated system that provides customized pressure relief through simple adjustments rather than complex custom-built structures for each patient.
Data Source
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AI summary
A pressure offloading device is configured to at least partially wrap around an appendage of a patient. An example pressure offloading device includes an inner layer made of a first foam having a first density and a first indentation force deflection (IFD) rating. The pressure offloading device also includes an outer layer made of a second foam having a second density and a second IFD rating. The inner layer and the outer layer have a U-shape. Additionally, the second IFD rating is greater than the first IFD rating.