Radiotherapy Bed Grip Layout for Safe Patient Positioning
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Solution Overview
Problem
In radiotherapy, manual position control of the patient on the radiotherapy bed leads to failures or erroneous operations due to unclear gripping points and potential contact with operation units, which are costly to repair and disrupt therapeutic planning.
Innovation Solution
A radiotherapy bed design with mechanically controllable base and bed members, featuring a grip portion and operation unit placement to guide proper gripping and prevent accidental contact, ensuring precise positioning and reducing manual errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual position control is used for rough positioning, then positioning flexibility is improved, but operation safety deteriorates due to unclear gripping points and potential contact with operation units
Solution Approach 1:
The bed member is segmented into distinct functional zones: a grip portion for manual positioning and an operation unit portion for precise control. This segmentation separates the manual operation area from the sensitive control area, allowing operators to grip and move the bed without risking contact with operation units, thus maintaining positioning flexibility while improving operation safety
Solution Approach 2:
The grip portion acts as an intermediary element between the operator and the bed member. By providing a dedicated gripping area with appropriate friction characteristics, it mediates the manual positioning action, enabling rough positioning while preventing direct contact between the operator's hands and the operation units
2Measurement precision
If operation units are placed for precise control, then positioning precision is improved, but operation safety deteriorates due to accidental contact with vomit or body fluid
Solution Approach 1:
The bed member is divided into separate zones: the grip portion for manual handling and the operation unit portion for precise control. This spatial segmentation ensures that operation units are positioned away from areas where vomit or body fluid might accumulate, protecting the precision controls from contamination while maintaining their positioning precision function
Solution Approach 2:
Different portions of the bed member have different surface properties tailored to their specific functions. The grip portion has high friction characteristics for secure manual gripping, while the operation unit portion has properties that prevent fluid accumulation and facilitate easy cleaning, thus protecting precision controls from bodily fluids
3Ease of manufacture
If the bed member surface is made smooth for easy cleaning, then ease of maintenance is improved, but gripping performance deteriorates due to insufficient friction
Solution Approach 1:
The bed member surface is segmented into different zones with different friction characteristics. The grip portion has a rougher surface or textured pattern that provides high friction for secure manual gripping, while other portions have smoother surfaces that are easy to clean and maintain, thus resolving the contradiction between gripping performance and ease of cleaning
Solution Approach 2:
The surface properties of the bed member are locally optimized for different functions. The grip portion features high-friction surface characteristics to ensure secure manual handling, while other areas have smooth, non-porous surfaces that resist fluid absorption and are easy to disinfect, allowing both good gripping performance and ease of maintenance
Data Source
AI summary
The radiotherapy bed includes a base member, a first bed member that is placed on the base member and whose position with respect to the base member can be mechanically controlled, and a second bed member that is placed on the first bed member and whose position with respect to the first bed member can be mechanically controlled. The second bed member is movable in a direction in which a treatment subject placed on the second bed member is carried into an area where a radiation is to be emitted by a radiotherapy device and in a direction in which the treatment subject is carried out from the area where the radiation is to be emitted by the radiotherapy device, and the first bed member has a grip portion on a surface along a carrying-in direction of the treatment subject.