Medical Operation Apparatus With Adaptive Finger Holder
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Solution Overview
Problem
Operators with different finger sizes and lengths face difficulties in properly reflecting movement content in master-slave type surgical assist robots, leading to unintentional operations due to fixed distances between the body and engagement portions.
Innovation Solution
A medical operation apparatus with a holder that adjusts to the operator's finger posture, using a contact portion and connector to maintain a specified permissible range of relative position change between the body and operation part, inhibiting unintentional movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the distance between the body and engagement portion is fixed, then the structure is simple, but operators with different finger sizes and lengths cannot properly reflect movement content leading to unintentional operations
Solution Approach 1:
The holder is designed to be movable relative to the body along the longitudinal direction, allowing the distance between the holder and body to be adjusted dynamically. This enables the device to adapt to operators with different finger sizes and lengths while maintaining a relatively simple overall structure.
Solution Approach 2:
The distance parameter between the holder and body can be changed according to different operators' needs. By allowing this parameter to be adjustable rather than fixed, the device achieves versatility for different finger sizes without significantly increasing structural complexity.
2Adaptability or versatility
If the holder is movable to accommodate different finger sizes, then adaptability improves, but the risk of unintentional operations increases
Solution Approach 1:
The movable holder is configured to be movable along the longitudinal direction of the body, allowing operators to adjust it to a comfortable position before operation. This preliminary adjustment ensures proper finger placement and reduces the risk of unintentional operations during use.
Solution Approach 2:
The movable holder acts as an intermediary between the operator's fingers and the operation part. By allowing adjustment of the holder's position, it mediates the interaction to ensure proper engagement while preventing unintended movements from being transmitted to the operation part.
3Ease of operation
If the relative posture of holder and operation part changes with finger posture, then ease of operation improves, but the change in relative position may cause unintentional operations
Solution Approach 1:
The system is segmented into the holder and the operation part, which can move independently relative to each other. The holder moves with finger posture changes for ease of operation, while the operation part remains stable to prevent unintentional operations. This segmentation allows each component to fulfill its specific function.
Solution Approach 2:
The holder is designed to be dynamic and movable relative to the operation part, allowing it to adapt to finger posture changes. Meanwhile, the connection between the holder and operation part is designed to limit the transmission of unintended movements, ensuring that only deliberate operations are transmitted.
Data Source
AI summary
A medical operation apparatus includes a body graspable by an operator, an operation part that is arranged to enable a part of the operation part to be moved relative to the body, and a holder that receives the fingers of the operator and transmits a movement of the fingers to the operation part. The holder includes a contact portion that comes in contact with the body, and a connector that supports a relative posture of the holder and the operation part so as to change the relative posture in accordance with a posture change of the fingers of the operator. In a relative arrangement position of the operation part and the body, when the relative posture of the holder and the operation part is changed, an amount of change in the relative arrangement position of the body and the operation part is within a specified permissible range.