Expandable Base Frame for Wheeled Nursing Device
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Solution Overview
Problem
Conventional hospital beds are cumbersome and require significant space and specialized equipment for movement, making it difficult to transport patients, especially in confined areas, and often necessitate transferring them to a wheelchair, which is inconvenient and uncomfortable for weak and disabled patients.
Innovation Solution
A wheeled nursing and medical device with an expandable base frame, a driving module, a bed mechanism, and a linking mechanism that allows the device to be shifted between a bed state and a wheelchair state by retracting the base frame and pivoting the backrest, reducing the overall length for easier travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hospital bed has a fixed-length bed frame with front and rear casters, then the bed structure is stable and simple, but it becomes troublesome to move the hospital bed and requires sufficient space in the original room and hallway
Solution Approach 1:
The bed frame transitions from a fixed static structure to a dynamic adjustable structure. The telescopic mechanism allows the bed frame length to be adjusted between extended and retracted positions, enabling the bed to adapt its length based on movement requirements while maintaining structural stability when stationary.
Solution Approach 2:
The bed frame is divided into multiple telescopic sections that can extend and retract independently. This segmentation allows the frame to be compressed into a shorter configuration for easy movement through narrow spaces while maintaining full length when needed for patient comfort and medical procedures.
2Adaptability or versatility
If a dedicated elevator and/or dedicated vehicle is used to move the hospital bed, then the bed can be transported from the original room to the destination, but the device complexity increases and space requirements increase
Solution Approach 1:
The hospital bed is equipped with multiple wheel assemblies that provide inherent movement capability, eliminating the need for dedicated elevators or vehicles. The bed can be manually or mechanically moved directly to various locations within the facility, making the moving system universal and eliminating the need for specialized transport equipment.
3Ease of operation
If the patient is transported to a wheelchair when there is not enough space, then the patient can be moved, but use of the hospital bed becomes inconvenient and causes discomfort to weak and disabled patients
Solution Approach 1:
The bed frame dynamically adjusts its length by retracting the telescopic sections, allowing the bed to pass through narrow doorways and hallways while maintaining its full functional length at the destination for patient comfort and medical care activities.
Solution Approach 2:
The physical parameter of bed frame length is changed from fixed to variable. The telescopic mechanism enables the frame to be compressed to a shorter length for transport through confined spaces, then extended to its full length at the destination to restore patient comfort and bed functionality.
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
Enables convenient transportation of patients by shortening the device's length in the wheelchair state, eliminating the need for additional equipment and reducing space requirements, while maintaining adjustable comfort features for patient positioning.
Implementation Method 1
the lower end of the at least one inclined bracket is moved forwardly to bring the upper end of the inclined bracket to press and turn the backrest plate upwardly
Data Source
AI summary
A wheeled nursing and medical device includes a wheeled seat mechanism, a driving module, a bed mechanism and a linking mechanism. The wheeled seat mechanism includes an expandable base frame and front and rear wheel assemblies. The driving module is operable to drive expanding and retraction of the expandable base frame. The bed mechanism includes a main bed plate and a backrest plate pivotally connected with the main bed plate. The linking mechanism includes at least one inclined bracket pivotally connected with the expandable base frame and the backrest plate. The device is shiftable between a bed state and a wheelchair state to render traveling of the device in the wheelchair state convenient.