Bent Brachytherapy Device with Rotating Inner Body for Radiation Direction Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current brachytherapy insertable devices lack the capability to adjust three-dimensional radiation intensity, particularly when a bent device is required for tumors like uterine cancer, making it difficult to effectively target the tumor while minimizing radiation exposure to surrounding healthy organs.
Innovation Solution
A bent insertable device with a rotating inner body and a flexible connection mechanism that allows the radiation source to be positioned eccentrically, enabling continuous adjustment of the radiation emission direction by rotating the inner body, which includes a first inner body with an accommodation space and a second inner body with a guide space, connected by a flexible shaft or joint, allowing the radiation source to be precisely directed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a bent insertable device is used to emit radiation to a tumor located like uterine cancer, then the radiation can reach the tumor effectively, but it is difficult to assign an intensity adjusting function to the device
Solution Approach 1:
The device is segmented into multiple independent outer bodies (first outer body, second outer body) connected by a bent part, with corresponding inner bodies that can rotate independently. This segmentation allows each segment to control radiation emission direction separately, enabling intensity adjustment for different regions while maintaining the bent configuration needed to reach deep tumors.
Solution Approach 2:
The inner bodies are designed to rotate dynamically within the outer bodies, with rotation angles可控 through the inner connection part. This dynamic capability allows the radiation emission direction to be adjusted continuously, transforming a static bent device into one with adjustable intensity distribution, thereby resolving the contradiction between maintaining bent shape and adding adjustment function.
2Adaptability or versatility
If the inner body is made separable from the outer body to enable rotation, then radiation emission direction can be adjusted, but the device structure becomes more complex
Solution Approach 1:
The inner bodies are nested within the outer bodies, with the first inner body positioned inside the first outer body and the second inner body inside the second outer body. The inner connection part nested within the bent part connects these inner bodies while allowing rotation. This nesting approach enables directional adjustment without adding external complexity, as the adjustment mechanism is contained within the existing structure.
Solution Approach 2:
The inner connection part acts as an intermediary element positioned in correspondence to the bent part, connecting the first inner body and second inner body while allowing relative rotation. This intermediary component enables the separable yet connected relationship between inner and outer bodies, providing the necessary rotational freedom while maintaining structural integrity and minimizing overall complexity.
3Measurement precision
If the radiation source is positioned eccentrically in the accommodation space, then precise radiation direction control is achieved, but manufacturing precision requirements increase
Solution Approach 1:
Rather than relying on fixed eccentric positioning that would require high manufacturing precision, the invention uses dynamic rotation of the inner body within the outer body. The radiation source remains centrally positioned in the accommodation space, but the rotation of the entire inner body assembly allows precise directional control. This transforms a static positioning problem requiring high manufacturing tolerance into a dynamic adjustment mechanism.
Solution Approach 2:
The invention changes the parameter of radiation direction control from positional (eccentric placement) to angular (rotation angle). By allowing the inner body to rotate through various angles, the radiation emission direction can be precisely controlled without requiring the radiation source to be positioned eccentrically. This parameter change from position to orientation eliminates the need for high eccentric positioning accuracy while achieving the same control objective.
Data Source
AI summary
The present invention relates to a body insertable device having an outer body being bent; and an inner body positioned inside the outer body, having an accommodation space in which the resource soured is accommodated, and being capable of rotating inside the outer body, wherein a radiation emission direction is continuously adjusted by rotation of the inner body.