Bedsore prevention mattress

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Solution Overview

Problem

Conventional mattresses with coil springs transmit vibrations and have fixed elastic force, leading to discomfort and reduced lifespan, and pneumatic mattresses lack adjustability and durability.

Innovation Solution

A mattress with grid-type air cells and a pneumatic pump system that expands and contracts selectively, incorporating resonant vibration speakers, pressure and temperature sensors, and fold grooves for synchronized bending, to minimize pressure points and prevent bedsores.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If coil springs are used to maintain cushioning and shape, then the mattress provides elastic support, but impact on one part transmits to surrounding areas causing significant vibrations and the elastic force deteriorates over time

Engineering Contradiction:

Improvecushioning supportVSAvoiddurability and vibration control

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The mattress is divided into multiple independent air cells arranged in a grid pattern, where each cell can be independently inflated or deflated. This segmentation prevents vibration transmission between adjacent areas while maintaining localized cushioning support, directly resolving the vibration and durability issues of coil spring mattresses.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent replaces mechanical coil springs with a pneumatic system using air-filled cells that can be dynamically adjusted. The air cells provide cushioning through pneumatic pressure rather than mechanical elasticity, eliminating the deterioration problem of spring elastic force while allowing impact isolation through selective inflation/deflation control.

Inventive Principle:

Principle #29Pneumatics and hydraulics

2Reliability

If pneumatic technology is used to create air mattresses, then vibration transmission is reduced, but the mattress lacks adjustability for different body conditions

Engineering Contradiction:

Improvevibration controlVSAvoidcushioning adjustability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The mattress system transitions from static cushioning to dynamic adjustability through independent control of each air cell. Users can adjust the inflation level of individual cells based on body weight distribution and comfort preferences, enabling real-time adaptation to different body conditions while maintaining vibration isolation benefits.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent enables parameter adjustment by changing the air pressure within each cell independently. This allows customization of cushioning firmness and support characteristics for different body regions and user requirements, directly addressing the lack of adaptability in conventional pneumatic mattresses.

Inventive Principle:

Principle #35Parameter changes

3Stress or pressure

If the entire mattress surface expands and contracts, then pressure distribution is improved, but the body contact area where weight is concentrated cannot be minimized

Engineering Contradiction:

Improvepressure distributionVSAvoidbedsore risk

Core Design Contradiction:

Stress or pressureVSObject-affected harmful factors

Solution Approach 1:

The patent applies different states (inflated/deflated) to different local regions (individual air cells) based on the patient's body weight distribution. Cells under heavier pressure remain inflated to provide support, while cells in lower-pressure areas can be deflated to reduce contact time and pressure concentration, thereby minimizing bedsore risk while maintaining overall pressure distribution.

Inventive Principle:

Principle #3Local quality

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 reduces pressure points through pneumatic expansion and contraction, enhances comfort with vibration massage, and monitors weight and temperature for proactive bedsore prevention.

Implementation Method 1

a resonant vibration speaker attached inside each of the grid-type air cell, configured to generate vibrations to massage the affected area of a patient; wherein the resonant vibration speaker generates vibrations synchronized with music to notify the patient of wake-up or medication times

Methodology Applied

Scientific EffectResonant vibration: Resonance

Implementation Method 2

the independent grid-type air cell expand and contract via a pneumatic pump to reduce pressure caused by the patient's body weight and thereby prevent bedsores

Methodology Applied

Scientific EffectPneumatic expansion and contraction: Pump

Data Source

PatentUS20250302684A1Bedsore prevention mattress

Publication Date: 2025.10.02 AIGEM CO LTD

AI summary

The present invention relates to a bedsore prevention mattress and, more specifically, to the bedsore prevention mattress in which a portion of the mattress surface expands and contracts through a pneumatic pump, and which minimizes body contact areas where the patient's weight is concentrated during the expansion and contraction process, thereby reliably preventing the occurrence of bedsores. To this end, the present invention provides the mattress adapted for use on an upper surface of a bed, the mattress comprising: grid-type air cells, each having an independent internal chamber; resonant vibration speakers, each attached inside a corresponding grid-type air cell and configured to generate vibrations to massage an affected area of a patient; and a base positioned below the grid-type air cells and coupled thereto to form an integrated mattress.