Bed device
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Solution Overview
Problem
Conventional bed devices require constant operator attention to prevent hazardous situations, especially in home care settings where operators are not skilled in controlling the devices, leading to increased risk and burden.
Innovation Solution
A bed device with an operation section, controller, detector, and limitation table that detects patient position and adjusts bed operations accordingly, including suspension of movements and alerts, to ensure safety and limit risky operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If alarm notification is implemented to warn of hazardous patient positions, then patient safety awareness is improved, but operator burden increases as manual intervention is still required
Solution Approach 1:
The bed device automatically detects patient position using pressure-sensitive switches and autonomously determines hazardous positions without requiring operator judgment. The system self-manages safety monitoring by comparing detected positions against pre-stored hazardous position data, eliminating the need for operators to continuously assess patient safety.
Solution Approach 2:
The system implements automatic feedback control by continuously monitoring patient position through pressure-sensitive switches and immediately notifying operators of hazardous positions through audio/visual alarms. This closed-loop feedback system ensures operators are promptly informed of safety issues without requiring constant manual inspection.
2Reliability
If constant operator attention is required to prevent hazardous situations, then patient safety can be maintained, but operation complexity and time consumption increase
Solution Approach 1:
Hazardous positions and their corresponding warning conditions are pre-stored in the controller before operation begins. The system has already prepared safety criteria and response protocols, eliminating the need for operators to make real-time safety judgments and reducing reaction time to actual hazards.
Solution Approach 2:
The bed device autonomously performs continuous patient position monitoring and hazard detection without requiring operator intervention. The system self-manages the time-consuming task of constant safety surveillance, freeing operators to focus on patient care rather than device monitoring.
3Reliability
If manual operation monitoring is implemented, then hazardous operations can be detected, but response time is delayed compared to automated detection
Solution Approach 1:
The system implements real-time automated feedback by continuously reading pressure-sensitive switch signals and immediately comparing them against stored hazardous position data. When a hazard is detected, the system instantly activates audio and visual warnings, providing faster response than manual monitoring could achieve.
Solution Approach 2:
The patent replaces manual operator monitoring with an automated electronic detection system using pressure-sensitive switches and microcontroller-based position analysis. This substitution of mechanical/manual inspection with electronic automation significantly accelerates hazard detection and warning response time.
Data Source
AI summary
A bed device includes: an operation section that receives an operation input; a controller that controls a movement of the bed in accordance with the operation input; a detector that detects a position of a patient on the bed; and, a limitation table that stores a limitation area set on the bed in association with a limitation content, wherein when the position of the patient detected by the detector is included in the limitation area, the limitation content is read out from the limitation table so as to control the controller in accordance with the limitation content. With this configuration, it is possible to provide a higher safety bed device which can not only notify the danger based on the bed movement but also limit the movement of the bed in accordance with the status of the patient or the bed device.