Bed Side Barrier Height Control for Adaptive Fall Prevention
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Solution Overview
Problem
Existing bed fall prevention systems, such as those described in JP2001276150A and KR20170004046A, fail to react timely to dangerous situations and can cause claustrophobia in patients due to their limited barrier positioning and lack of adaptive response.
Innovation Solution
A bed fall prevention system featuring adjustable protective side barriers anchored to the bed frame, equipped with load cells, accelerometric, and gyro sensors to detect patient position and movement, allowing real-time adaptive height adjustment and speed control of the barriers to prevent falls while minimizing discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If side barriers are raised to maximum height to prevent falls, then fall prevention effectiveness is improved, but patient comfort deteriorates due to claustrophobia
Solution Approach 1:
The side barriers are designed to dynamically adjust their height between minimum and maximum positions based on real-time sensor detection of patient movement and fall risk assessment, rather than remaining fixed at a constant height. This allows the system to provide maximum protection when needed while maintaining patient comfort during normal rest periods.
Solution Approach 2:
The system changes the physical parameter of barrier height from a static state to a variable state, adjusting between minimum and maximum positions according to detected patient conditions. This parameter variation enables the system to optimize both safety effectiveness and patient comfort at different times.
2Object-affected harmful factors
If side barriers are lowered to minimum height to improve patient comfort, then patient comfort is improved, but fall prevention capability deteriorates
Solution Approach 1:
The sensor system continuously monitors patient position and movement patterns in advance, detecting early signs of potential falls. This preliminary detection allows the control unit to raise the barriers proactively before a fall occurs, ensuring both comfort during normal periods and protection when needed.
Solution Approach 2:
The system employs a closed-loop feedback mechanism where sensors continuously detect patient status, the control unit processes this information to assess fall risk, and the barriers adjust their position accordingly. This feedback loop ensures timely response to changing patient conditions while maintaining comfort during stable periods.
3Speed
If barriers are raised quickly to respond to fall risk, then response time is improved, but patient discomfort increases due to sudden movement
Solution Approach 1:
The system uses periodic sensor monitoring and controlled barrier adjustments rather than continuous or sudden movements. The barriers are raised in controlled increments or held at intermediate positions during transition, providing timely response to fall risk while minimizing sudden movements that could discomfort the patient.
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 system effectively reduces the risk of falls by quickly and adaptively positioning the barriers, minimizing patient discomfort and reaction time, and providing timely prevention of falls from bed.
Implementation Method 1
The sensors include load cells to detect the position taken by the patient on a mattress of the bed
Implementation Method 2
The sensors also include an accelerometric sensor applicable to the patient's body in order to detect the acceleration of the patient's movements
Implementation Method 3
a gyro sensor, this too being applicable to the patient's body, to detect the decubitus of the patient
Data Source
Figure 1~2
AI summary
System for preventing a patient from falling from a bed (30), the system (10) comprising a first protective side barrier (11) and a second protective side barrier (12) that are adapted to be positioned along a first side edge (31) and a second side edge (32) of the bed (30), respectively, and are configured to be lifted or lowered by varying the height thereof from a minimum height to a maximum height: The system (10) further comprising anchoring means (15, 16, 17) for fixing said first and second protective side barriers (11, 12) to a frame (33) of the bed (30). The system (10) further comprising sensors adapted to detect the position taken by the patient on a mattress of the bed (30), and a control unit configured to receive data collected by said sensors and, on the basis of said data, determine in real time a lifting or lowering of a predetermined extent of said first and second protective side barriers (11, 12), up to heights of said first and second protective side barriers (11, 12) ranging between the minimum height and the maximum height, depending on the position taken by the patient on the mattress.