Inflatable Bladder Mattress for Patient Pressure Distribution
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Solution Overview
Problem
Conventional patient support systems fail to provide adequate immersion and pressure distribution, leading to discomfort and potential health issues for patients, particularly in hospital settings.
Innovation Solution
A patient mattress featuring a matrix of inflatable bladders formed from gelatinous elastomeric sheets, with channels for fluid communication between them, and a control system to manage pressure, providing improved immersion and pressure distribution through adjustable inflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional patient support systems are used, then the structure is simple, but immersion and pressure distribution are inadequate
Solution Approach 1:
The mattress is divided into multiple independent bladders arranged in a matrix pattern, allowing each bladder to independently respond to pressure points. This segmentation enables superior pressure distribution while maintaining manageable structural complexity through modular design
Solution Approach 2:
The mattress uses fluid-filled bladders connected through fluid communication channels, allowing pressure to be distributed and equalized across multiple bladders. This pneumatic system provides adaptive pressure distribution that conforms to patient body contours, improving reliability of pressure management
2Reliability
If gelatinous elastomeric sheets are used to form bladders, then immersion and pressure distribution improve, but manufacturing complexity increases
Solution Approach 1:
The bladders are formed from gelatinous elastomeric sheets that provide flexibility and conformability for improved patient immersion. These thin film structures allow the bladders to adapt to body contours while maintaining structural integrity, enhancing immersion capability
Solution Approach 2:
Multiple sheets are joined together to form the bladder matrix structure, combining the advantages of flexible elastomeric material with structured support. This merging of multiple components creates the desired immersion capability while using standard joining techniques
3Stability of the object's composition
If sheets are joined at perimeters with flanges, then structural stability improves, but assembly complexity increases
Solution Approach 1:
Flanges are added specifically at the perimeter regions of the sheets where structural support is most needed, rather than throughout the entire sheet. This localized addition provides stability at critical joints while minimizing overall structural complexity
Solution Approach 2:
The flanges provide curved or rounded joining surfaces that facilitate stable connections between sheets. The curved geometry of the flange structures enhances mechanical interlocking and structural stability at the sheet perimeters
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 mattress offers enhanced patient comfort by ensuring improved immersion and pressure distribution, reducing the risk of pressure sores and enhancing therapeutic effectiveness through adjustable pressure settings.
Implementation Method 1
Each bladder is formed from a gelatinous elastomeric sheet
Implementation Method 2
A patient mattress for supporting a patient includes a plurality of inflatable bladders
Implementation Method 3
at least a first group of the bladders in fluid communication with each other through channels formed by the gelatinous elastomeric sheet
Data Source
AI summary
A patient support for supporting a patient includes an inflatable mattress defining a support surface and a pneumatic system for inflating the inflatable mattress. The pneumatic system includes a pressurized reservoir for holding pressurized air and selectively releases pressurized air from the reservoir to the mattress.