Adjustable Medical Bed Side Rail With Rotating Locking Assembly
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Solution Overview
Problem
Existing medical beds lack adjustable side rails that can be easily installed, removed, or adjusted between use and storage positions, which limits their adaptability in different settings and patient conditions.
Innovation Solution
An adjustable side rail assembly with a rotatable side rail and an actuation assembly that includes an inner member, an outer member, and a locking mechanism, allowing the side rail to transition between storage and use positions, and a clamping mechanism for secure attachment to the bed frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If side rails are permanently installed on medical beds, then patient safety is improved by providing continuous support and fall prevention, but device complexity and adaptability deteriorate because the bed cannot be easily adapted to different settings or patient conditions
Solution Approach 1:
The side rail is designed to be dynamically adjustable between a deployed position for patient safety and a retracted position for minimal interference. The actuation assembly enables the side rail to rotate about a pivot point, transitioning between these positions based on operational needs, thus resolving the contradiction between providing continuous safety and adapting to different settings.
Solution Approach 2:
The side rail assembly is segmented into movable and stationary components. The actuation assembly separates the side rail from the bed frame, allowing independent movement of the side rail while the frame remains fixed. This segmentation enables the side rail to be positioned as needed without permanently altering the bed structure.
2Reliability
If side rails are permanently installed on medical beds, then patient safety is improved by providing continuous support, but ease of operation deteriorates because the side rails cannot be easily adjusted or removed
Solution Approach 1:
The actuation assembly is designed to be manually operable by caregivers without requiring specialized tools or complex procedures. The mechanism allows straightforward activation to deploy or retract the side rail, making it easy to adjust based on patient needs while maintaining reliable safety support when deployed.
3Adaptability or versatility
If side rails are made adjustable and removable, then adaptability and ease of operation are improved, but reliability deteriorates because the locking mechanism may not securely hold the side rail in position
Solution Approach 1:
The locking mechanism uses a positive mechanical engagement system with locking surfaces and detents that provide secure holding when engaged. This mechanical substitution ensures reliable locking in deployed and retracted positions while maintaining the ability to adjust when needed, resolving the contradiction between adaptability and secure positioning.
Data Source
AI summary
An adjustable side rail assembly includes a side rail and an actuation assembly. The side rail is rotatable between a storage position and a use position. The actuation assembly includes an inner member, an outer member, and a locking assembly. The outer member is coupled to the side rail and is rotatable relative to the inner member between first and second rotational orientations for rotating the side rail between the storage and use positions, respectively. The locking assembly is transitional between a locked condition, wherein the locking assembly engages both the inner and outer members to fix the inner and outer members in the first or second rotational orientation, and an unlocked condition, wherein the locking assembly is disengaged from the inner and/or outer member to permit rotation of the outer member relative to the inner member between the first and second rotational orientations.