Modular Mattress with Forced Aeration for Decubitus Ulcer Healing
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Solution Overview
Problem
Current bed mattresses, such as air and water mattresses, primarily function to prevent decubitus ulcers but fail to effectively heal them, posing a significant healthcare challenge due to prolonged pressure and shear forces, especially in vulnerable patients like the elderly and those with systemic diseases.
Innovation Solution
A modular mattress with forced aeration features, including oxygen-inflated cavities around high-risk areas like the sacrum and heels, providing a high concentration of oxygen to prevent ulcer formation and accelerate healing by stimulating cell growth and reducing shear forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air mattresses or water mattresses are used, then prevention of decubitus ulcer formation is improved, but healing capability is not achieved
Solution Approach 1:
The mattress is designed to perform multiple functions: prevention of decubitus ulcers through pressure distribution and active healing through oxygen delivery. The system integrates both protective and therapeutic capabilities in a single device, allowing it to both prevent ulcer formation and accelerate healing of existing ulcers.
Solution Approach 2:
Oxygen serves as an intermediary substance delivered through the mattress to the patient's tissue. The mattress acts as a mediator between the oxygen source and the affected areas, providing controlled oxygen therapy that promotes healing without direct application.
2Strength
If prolonged pressure is exerted on tissues, then support function is improved, but tissue ischemia and necrosis occur
Solution Approach 1:
The mattress is divided into multiple independent inflatable cells that can be individually adjusted. This segmentation allows pressure to be distributed across many small contact points rather than concentrated areas, providing support while minimizing localized pressure that could cause ischemia.
Solution Approach 2:
The mattress uses pneumatic inflation to create adjustable pressure distribution. By controlling the air pressure in different cells, the system provides optimal support while preventing excessive pressure on any single area, thus avoiding tissue ischemia and necrosis.
3Ease of operation
If shear forces act on soft tissues, then body positioning is improved, but deep-tissue necrosis occurs
Solution Approach 1:
The mattress incorporates dynamic adjustment capabilities allowing real-time modification of pressure distribution and patient positioning. This dynamic control enables optimization of body positioning to prevent shear forces while maintaining comfort and support.
Solution Approach 2:
The mattress surface is designed with curved contours that match the natural anatomy of the body. These curved surfaces distribute pressure more evenly and reduce shear forces by conforming to body shapes, preventing deep-tissue necrosis while maintaining proper positioning.
4Productivity
If oxygen concentration is increased in ulcer areas, then healing speed is improved, but system complexity increases
Solution Approach 1:
The oxygen delivery system is merged with the existing mattress structure. The inflatable cells and ducts are integrated into the mattress layers, combining the support function with the oxygen therapy function in a unified system rather than separate devices.
Solution Approach 2:
The mattress system automatically delivers oxygen to affected areas through integrated sensors and control mechanisms. The system monitors patient needs and adjusts oxygen delivery accordingly, reducing the need for manual intervention and simplifying operation despite the advanced functionality.
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 effectively prevents decubitus ulcer formation and accelerates healing by enhancing oxygenation, reducing healing time by 35%-40% and minimizing systemic risks, while being safe and compatible with other treatments.
Implementation Method 1
means for forced aeration of the areas of the body presenting sores or subject to developing sores
Implementation Method 2
the transcutaneous increase in the concentration of oxygen stimulates growth of new cells
Implementation Method 3
oxygen performs a bactericidal role for anaerobic germs such as Staphylococcus aureus and E. coli
Implementation Method 4
The normal pressure in the arterial capillary circulation is 32 mmHg. The external compression becomes harmful for the tissues when it exceeds the critical level of 32 mmHg
Implementation Method 5
Shear forces determine a progressive mutual displacement of surfaces constituted by elements set on top of one another
Data Source
AI summary
A medical device for healing and/or preventing decubitus ulcers is provided with means for forced aeration of the areas of the body presenting sores or subject to developing sores and substantially comprises a modular and adjustable mattress, which is made of a particularly soft spongy material and envisages cavities in areas of the patient's body that present risks of developing decubitus ulcers. The mattress is made up of at least three parts or modules: a top module, designed to provide a support for the head and shoulders of the bedridden patient; a central module, designed to provide a support for the central area of the body and provided with a hole or cavity in an area corresponding to the sacral region; and a bottom module, designed to provide a support for the lower limbs and provided with two holes or cavities in an area corresponding to the patient's heels.