Electric-Movable Bed Platform with Segmented Plates for Bedsore Prevention
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Solution Overview
Problem
Conventional electric-movable beds fail to accommodate varying patient body types, leading to uncomfortable positions and increased risk of bedsores due to fixed rotating portions and non-optimized posture change cycles, which are not tailored to individual patient characteristics such as sex, age, and weight.
Innovation Solution
A platform for an electric-movable bed featuring a plate unit with rotatable main and sub-plates, a locking mechanism, and driving units that adjust to fit individual body types, along with a control system that inputs user data to optimize posture changes based on risk levels of bedsore occurrence, including pressure, shear forces, and transcutaneous gas levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed rotating portion is used in conventional electric-movable beds, then the device structure is simple, but it cannot accommodate varying patient body types leading to uncomfortable positions and increased bedsore risk
Solution Approach 1:
The bed platform is divided into multiple rotatable plates (first main plate, second main plate, sub plates) that can independently rotate around different shafts. This segmentation allows each plate to be adjusted according to patient body type, resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The rotating shafts are made adjustable in position along the plates rather than being fixed. This dynamic capability allows the shaft positions to be changed according to different patient body types, enabling the device to adapt while maintaining a relatively simple overall structure.
2Reliability
If uniform position change cycle is applied to all patients, then the control system is simple, but it cannot provide optimized posture changes for individual patients increasing bedsore risk
Solution Approach 1:
The control system adjusts multiple parameters including posture change period, tilted angles of main plates and sub plates, and rotation angles according to patient-specific factors such as sex, age, weight, and bedsore risk level. This parameter customization improves bedsore prevention effectiveness while keeping the control logic relatively straightforward.
Solution Approach 2:
The system incorporates feedback mechanisms where the control unit receives information about patient characteristics and bedsore risk levels, then adjusts the posture change cycles and angles accordingly. This feedback-based adjustment improves reliability without requiring overly complex control systems.
3Ease of operation
If fixed tilted angles are used in supporting parts, then the device structure is simple, but it causes wrong positions for patients with different body types leading to discomfort and musculoskeletal disorders
Solution Approach 1:
The tilted angles of the first and second main plates, as well as the rotation angles of sub plates, are made dynamically adjustable rather than fixed. This allows the supporting parts to be configured according to each patient's body type, improving comfort while maintaining a manageable level of mechanical complexity.
Solution Approach 2:
Different portions of the bed platform (first main plate for upper body, second main plate for lower body, sub plates for specific regions) can have different tilted angles and rotation angles adjusted according to local patient needs. This local customization improves overall patient comfort without requiring complete redesign of the entire system.
Data Source
AI summary
There is disclosed a platform of an electric-movable bed for preventing bedsores and capable of changing a shaft including a plate unit. The platform includes a plurality of main plates rotatably provided to support the human body, a plurality of sub plates rotatably and hingedly coupled to the main plates, respectively, and a locking part provided between each main plate and each sub plate to enable or lock the rotation of each main plate or sub plate, the plate unit being configured to selectively rotate a corresponding portion to a position of the joint according to a user's body type; a first driving unit configured to tilt an upper part of the human body lying on the plate unit; and a second driving unit configured to tilt a lower part of the human body lying on the plate unit.