Rotating Bed Assembly with Pivot Tray for Patient Transfer
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Solution Overview
Problem
Conventional low bed designs in medical and nursing facilities lack the ability to provide two-dimensional rolling movement while maintaining bed stability, restricting user-selectable height and angle positions, and require assistance for patients to enter and exit, which can be stressful and labor-intensive for both patients and caregivers.
Innovation Solution
A rotating and articulating sleeping assembly with a frame that includes two parallel drop sections, a turntable, and pivot tray, operated by electrical actuators and a crank mechanism, allowing the bed to fold, elevate, and rotate 90°, enabling patients to transition from a supine to a sitting position for easier exit and entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bed is designed to allow two-dimensional rolling movement at any height position, then the ease of operation and user accessibility are improved, but the bed stability and castor functionality deteriorate due to non-perpendicular castor stud positioning
Solution Approach 1:
The bed frame is divided into a head section and a foot section that can be independently positioned at different heights and angles. This segmentation allows each section to be optimized for its specific function while maintaining overall stability, enabling two-dimensional rolling movement without compromising castor functionality.
Solution Approach 2:
The invention introduces a vertical height adjustment dimension in addition to the horizontal rolling movement. By allowing the bed to be positioned at multiple height levels and angles simultaneously, the system achieves two-dimensional movement capability while maintaining stability through the head-to-foot height differential.
2Reliability
If the bed height is fixed at a factory-set position for rolling capability, then the castor tracking and bed stability are improved, but the adaptability to user-selected height and angle positions deteriorates
Solution Approach 1:
The bed incorporates adjustable height mechanisms that allow the head and foot sections to be dynamically positioned at different heights and angles. This dynamic adjustability enables the bed to adapt to various user preferences and medical requirements while maintaining proper castor alignment through coordinated height adjustment.
Solution Approach 2:
The invention allows independent adjustment of multiple parameters including head section height, foot section height, and bed angle. By changing these parameters independently, the system achieves both stable castor tracking and user-selectable positioning capabilities.
3Device complexity
If patients require assistance to enter and exit the bed, then the bed structural simplicity is maintained, but the ease of operation and patient independence deteriorate due to heavy lifting requirements
Solution Approach 1:
The bed is segmented into independently adjustable head and foot sections, allowing the foot section to be lowered to facilitate patient entry and exit. This segmentation enables patients to transfer more independently while maintaining overall structural simplicity.
Solution Approach 2:
The bed allows preliminary positioning of the foot section at a lower height before patient transfer. This preliminary action reduces the effort required for patients to enter and exit the bed, improving independence without requiring complex mechanical assistance systems.
Data Source
AI summary
An assembly has a frame with two ends and two rails with a drop section generally centered, a base plate spanning the rails at the drop sections, a turn table upon the base plate, a pivot tray upon the turn table, linkages upon the pivot tray, sections operatively connected to the linkages, spring panels upon the sections, and a mattress upon the section. Senior citizens, patients, and disabled persons find difficulty to enter and to climb out of bed and may frequently require assistance. When this problem occurs, others must assist a person and the assistance varies depending on the person's size, weight and degree of mobility. The present invention adapts easily to most standard bed frames and allows a patient to rotate clockwise or counterclockwise and then to a sitting position.