Medical Table Hand Collision Detection During Top Board Movement
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Solution Overview
Problem
Existing medical tables for X-ray imaging systems pose a risk of hand or finger contact with internal instruments during manual movement, as users lack effective detection and prevention mechanisms to avoid collisions.
Innovation Solution
Incorporation of a detecting device with multiple sensors to detect potential collisions and a preventing device to halt movement based on detection signals, ensuring safe operation by preventing the top board or internal instruments from moving when contact is imminent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the top board is manually moved by gripping the edge with hand or fingers, then the operation is simple and direct, but there is a risk that hand or fingers will be hit against or caught in the internal instruments
Solution Approach 1:
The detecting device is activated before the top board moves to detect the presence of hands or fingers in the danger zone. The preventing device is pre-configured to stop movement if detection occurs, preventing the harmful contact before it can happen.
Solution Approach 2:
The detecting device acts as an intermediary between the manual operation and the moving top board. It monitors the space between the operator's hands and the internal instruments, providing early warning and triggering prevention before direct contact occurs.
2Reliability
If detection and prevention devices are added to the medical table, then safety is improved, but the device complexity increases
Solution Approach 1:
The detecting device uses a single sensor system that performs multiple detection functions: detecting hands, detecting fingers, and detecting the position of the top board. The preventing device integrates control of both the top board movement and internal instrument movement under one system, reducing overall complexity despite enhanced safety capabilities.
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
The solution effectively prevents collisions between hands or fingers and internal instruments, enhancing safety during manual operation of the medical table by using optical detectors and switches to monitor and control movement within safe limits.
Implementation Method 1
the first detector is an optical detector... the optical detector includes an emitter and an optical sensor arranged at both ends of the limit line so as to be opposite to each other
Data Source
AI summary
A medical table wherein a top board on which a patient is placed is supported by a base having an internal instrument so as to be movable parallel to the board surface, the medical table includes a detecting device that detects the possibility that a hand or fingers, which grip the top board, come in contact with the internal instrument during the movement of the top board or internal instrument, and a preventing device that prevents the movement of the top board or the internal instrument on the basis of a detection signal of the detecting device