Ultrasonic Probe Injection Device RCM Mechanism
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Solution Overview
Problem
Conventional ultrasonic probe injection devices face challenges in maintaining a consistent insertion point as the insertion angle of the injection needle changes, and they require complex hand movements to adjust the insertion depth and angle, leading to inefficiencies and potential errors in lesion area targeting.
Innovation Solution
An ultrasonic probe injection device utilizing a Remote Center of Motion (RCM) mechanism with a housing, ultrasonic probe, lifting body, support body, and injection unit fixing body, allowing for one-handed adjustment of insertion angle and depth, with a conveying rail and adjusting gear system that stabilizes the insertion point through elastic support, enabling precise and efficient needle placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the insertion angle of the injection needle is changed, then the injection can reach different lesion areas, but the insertion point becomes inconsistent leading to targeting errors
Solution Approach 1:
The device segments the adjustment functions into independent components: the conveying rail handles depth adjustment while the adjusting gear handles angle adjustment. This segmentation allows each component to operate independently without affecting the other, maintaining insertion point consistency while enabling angle adaptation.
Solution Approach 2:
The RCM (Remote Center of Motion) mechanism acts as an intermediary that decouples the relationship between angle adjustment and insertion point position. By introducing this intermediate mechanism, the system can change the needle angle without causing unwanted movements in the insertion point, thus resolving the contradiction between adaptability and precision.
2Ease of operation
If complex hand movements are used to adjust insertion depth and angle, then adjustment is possible, but operational efficiency decreases and errors increase
Solution Approach 1:
The device merges the depth adjustment (conveying rail) and angle adjustment (adjusting gear) functions into a single integrated mechanism that can be operated with one hand. This combination eliminates the need for complex sequential hand movements, improving both ease of operation and operational efficiency simultaneously.
Solution Approach 2:
The adjusting gear system is designed to be self-contained and self-operating, requiring minimal user intervention. The elastic body provides automatic return functionality, and the gear mechanism translates simple rotational input into precise angular adjustment, reducing the complexity of user operations while maintaining high productivity.
3Adaptability or versatility
If the insertion depth is adjusted during insertion, then flexible positioning is achieved, but the supporting force becomes weak causing angle changes
Solution Approach 1:
The device separates depth control and angle control into distinct functional elements: the conveying rail for depth adjustment and the adjusting gear for angle control. This segmentation ensures that depth adjustment does not compromise angle stability, as each function is handled by a dedicated mechanism with appropriate structural support.
Data Source
AI summary
The present invention relates to an ultrasonic probe injection device using a Remote Center of Motion (RCM), the device enabling the insertion angle and the insertion depth of an injection needle of an injection unit to be easily adjusted using one hand, and the insertion angle and the insertion depth of the injection needle of the injection unit to be automatically fixed after adjustment, thereby having the merit of enhancing efficiency in operation, and even if the insertion angle of the injection needle of the injection unit changes, the insertion point reached when the injection needle of the injection unit is inserted is equally maintained, thereby having the merit of enabling a decrease in error with respect to a lesion area.