Fluid Pod Support Assembly for Pressure Ulcer Relief
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Solution Overview
Problem
Conventional cushioning devices fail to effectively prevent pressure ulcers by redistributing pressure efficiently, often leading to localized pressure on the body due to bottoming out or inadequate conformation to the patient's shape, especially in areas like the sacrum and trochanter.
Innovation Solution
A portable support assembly comprising fluid-filled pods enclosed within inner and outer pads, with an outer shell for distribution of pressure, allowing for adjustable fit and reduced pressure on bony prominences by inhibiting pod compression and redistributing load through fluid layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional flexible cushioning devices (foam or springs) are used to allow deformation and conformation to the patient's body, then the cushion can adapt to body shape, but the device bottoms out such that the patient's body contacts the underlying platform and pressure remains localized
Solution Approach 1:
The cushion is divided into multiple independent fluid-filled bladders arranged in a grid pattern, where each bladder can independently deform and conform to body contours while maintaining overall structural integrity to prevent bottoming out
Solution Approach 2:
Fluid-filled bladders replace traditional foam or spring materials, using hydraulic pressure distribution to evenly redistribute body weight across the seating surface, preventing localized pressure points while maintaining conformability
2Reliability
If fluid-filled cushions with single or compartmentalized bladders are used to hammock and suspend the patient's body, then pressure redistribution is improved, but the device requires a large area for placement and specialized bedding
Solution Approach 1:
The cushion is segmented into multiple independent bladders that can be densely packed in a compact grid arrangement, allowing effective pressure redistribution within a smaller overall footprint compared to traditional single-bladder designs
Solution Approach 2:
The bladder compartmentalization allows independent adjustment of pressure parameters in different zones, enabling effective pressure redistribution with reduced overall cushion area by concentrating support where needed
3Reliability
If segmented bladders are used to isolate individual bladders from one another, then pressure isolation is improved, but fluid between segmented cushions is prevented from flowing laterally reducing conformation capability
Solution Approach 1:
Individual bladders are segmented and isolated within the cushion structure, allowing each to independently respond to localized pressure while maintaining overall conformability through the flexible bladder material and arrangement
Solution Approach 2:
Each bladder is constructed from flexible material that allows lateral deformation and conformation to body contours, enabling pressure isolation while maintaining the ability to adapt to various body shapes and positions
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 solution significantly reduces pressure on sensitive areas, preventing tissue necrosis and pressure ulcers by distributing pressure evenly, as demonstrated by a 43% average reduction in pressure measurements and increased contact area, thereby enhancing patient comfort and reducing hospital stays.
Implementation Method 1
utilizing several fluid layers which are contained one within another to receive the localized loading from the protuberance from the patient's body and distribute the localized load onto the surrounding areas
Data Source
AI summary
Apparatus and methods for conforming a support to a body are described in which a portable support assembly may be worn by a bed-stricken individual around particular regions of the body where pressure ulcers tend to form. The portable support assembly may generally include adjustable supports which conform the assembly to the patient's body and which also help to distribute one or more fluid pad assemblies relative to the body.