Bed Device with Position-Based Movement Limitation for Patient Safety
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Solution Overview
Problem
Conventional bed devices require constant attention from operators to prevent hazardous situations, especially in home care settings where operators may not be familiar with the controls, leading to increased risk and burden, as they need to manually stop or adjust operations to prevent patients from falling or getting caught during bed movements.
Innovation Solution
A bed device equipped with an operation section, controller, detector, and limitation table that detects patient position and adjusts bed operations accordingly, allowing for automatic limitation and notification of operators to prevent hazardous movements, such as suspending bed movements when a patient is in a risky position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operator manually monitors and stops bed operations to prevent hazardous situations, then patient safety can be maintained, but the operator's burden increases and response time is delayed
Solution Approach 1:
The bed device performs self-monitoring of patient position and self-control of hazardous operations through the limitation table function. The system automatically detects patient position via detectors, judges potential hazards, and limits bed operations without requiring continuous manual operator attention, enabling the device to serve its own safety monitoring function
Solution Approach 2:
The system continuously monitors patient position through detectors and provides feedback to the control unit. Based on this feedback, the control unit automatically adjusts bed operations by referencing the limitation table, creating a closed-loop control system that responds to real-time patient position changes without manual intervention
2Reliability
If the operator continuously pays attention to the bed device to deal with unexpected risks, then patient safety is improved, but the operator's workload and stress increase significantly
Solution Approach 1:
The limitation table is pre-configured with hazard judgment criteria and corresponding operation limitations before actual use. The system prepares safety rules in advance, so when a hazardous situation is detected, the appropriate limitation is automatically applied without requiring the operator to make complex real-time decisions about what actions to take
3Adaptability or versatility
If unskilled operators operate the bed device at home, then accessibility and convenience are improved, but the risk of hazardous operations increases due to lack of familiarity with controls
Solution Approach 1:
The bed device automatically performs safety monitoring and operation limitation functions without requiring operator expertise. The system self-judges hazardous situations based on patient position and self-limits operations according to the pre-configured limitation table, making the device safe to operate even by unskilled family members at home
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.