Retractable Bed Barrier Segmentation for Patient Exit
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Solution Overview
Problem
Patients with reduced mobility face difficulties in getting out of bed due to the design of existing medical bed barriers, which often require cumbersome movements or lack accessible gripping points, hindering autonomy and ease of exit.
Innovation Solution
A medical bed with retractable barriers featuring a first handle forming an angle of approximately 60° with the horizontal and a second handle secured to the head rail, positioned to facilitate easy gripping and reduce shoulder movement, along with a foot rail to assist in exiting the bed without obstructing the path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If barriers extend over the entire length of the bed to prevent falls, then patient safety is improved, but patient ability to exit the bed is worsened
Solution Approach 1:
The barrier is divided into multiple segments: a first barrier portion extending from the head of the bed, a second barrier portion extending from the foot of the bed, and a gap between them. This segmentation allows the barrier to provide safety where needed (head and foot areas) while creating an exit path in the middle section.
Solution Approach 2:
Different portions of the barrier have different functions: the first and second barrier portions provide fall prevention, while the gap portion provides exit access. The barrier structure is optimized locally - higher at the head and foot ends for safety, and lower/absent in the middle for ease of exit.
2Reliability
If three-quarter rails extend over more than half the length of the bed to prevent falls, then patient safety is improved, but patient ability to access exit point is worsened
Solution Approach 1:
The barrier system is segmented into a first barrier portion at the head and a second barrier portion at the foot, separated by a gap. This allows patients to access the exit point (gap) without having to move to the extreme foot edge, as the gap is positioned more centrally.
Solution Approach 2:
The gap between the first and second barrier portions acts as an intermediary exit path, providing a safe and accessible transition zone that mediates between the safety requirement (barriers at head and foot) and the exit requirement (accessible gap in the middle).
3Reliability
If simple barriers extend over the entire length of the bed, then fall prevention is improved, but patient autonomy to exit bed is worsened
Solution Approach 1:
The continuous barrier is segmented into discrete portions with a gap, transforming the barrier from an obstacle to exit into a safety feature that naturally guides patients to the gap for exit, thereby maintaining fall prevention while restoring patient autonomy.
4Ease of operation
If barriers are made retractable to allow easy exit, then patient ability to exit bed is improved, but fall prevention capability is worsened
Solution Approach 1:
The barrier system incorporates dynamic elements - the first and second barrier portions can be independently adjusted or retracted, allowing the barrier configuration to change based on whether fall prevention or patient exit is the primary need at any given time.
Data Source
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AI summary
The bed (1) has a lying surface bordered by a longitudinal edge and two transverse edges e.g. leading edge and foot edge. A retractable head barrier (6) is placed along the longitudinal edge and comprises a front end closer to the leading edge than a rear end. A mattress is laid on an upper frame (4). The barrier is removably provided with tubular elements (8, 10) and tubular connection elements (12-14) mutually articulated with respect to the frame about transverse axles (9, 11, 15, 20). The barrier has an annular handle (21) with square contour to assist recovery of a patient.