Bed frame, mattress and bed with enhanced chair egress capability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current chair beds in healthcare settings do not optimally position a patient's center of gravity for egress and ingress, as the chair egress mode may still have the center of gravity too far behind the heels, making transitions from sitting to standing posture suboptimal.
Innovation Solution
A bed frame and mattress design that allows for a chair state and a chair egress state, where the intercorner distance is reduced by relative longitudinal movement of deck sections, and the mattress segments adjust to accommodate the change, positioning the center of gravity more favorably for egress and ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the intercorner distance is reduced in chair egress state to position center of gravity more favorably, then transitions from sitting to standing become more stable and easier, but the structural configuration becomes more complex
Solution Approach 1:
The frame is segmented into multiple articulable sections that can move independently, allowing the seat section to be positioned forward to reduce intercorner distance and improve egress stability without requiring complete redesign of the entire frame structure.
Solution Approach 2:
The articulable frame sections serve multiple functions: they enable both chair mode and chair egress mode operation, and specifically allow the seat section to move forward for optimal egress positioning while maintaining structural integrity and support capabilities.
Data Source
AI summary
A bed frame 36 disclosed herein includes a calf section 72 with a foot end 74 and an upper end 76 longitudinally spaced from the foot end, an upper body section 54 with a head end 56 and a lower end 58 longitudinally spaced from the head end, and a medial section 66 longitudinally intermediate the calf and upper body sections. The bed frame is capable of assuming a chair state and a chair egress state. The upper body section and medial section define a sacral corner 68, and the calf section and medial section define a popliteal corner 70 spaced from the sacral corner by an intercorner distance. The intercorner distance is smaller in the chair egress state than in the chair state. A mattress 100 disclosed herein includes an upper body segment 102, a calf segment 116, and a medial segment 124 The lower end 106 of the upper body segment cooperates with the upper end 120 of the calf segment to define an intersegment distance. The mattress has a chair state in which the intersegment distance is a distance D1 and an egress state in which the intersegment distance is a distance D2 which is less than D1. A bed disclosed herein includes a frame whose intercorner distance is smaller in the chair egress state than in the chair state, and a mattress having a medial segment which is conformable to accommodate smaller and larger intercorner distances.