Adjustable Radiation Emission in Bent Brachytherapy Devices
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Solution Overview
Problem
Current brachytherapy technologies lack the ability to adjust three-dimensional radiation intensity and emission direction effectively, particularly for tumors located in regions requiring a bent insertable device, such as uterine cancer.
Innovation Solution
An insertable device with a bent shape featuring a dual accommodation space system within the inner body, allowing for rotation and adjustment of the radiation source's position and emission direction, utilizing a rotation power mechanism and guide spaces to alter the radiation emission range and direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a bent insertable device is used for radiation emission on tumors in regions such as uterine cancer, then the device can reach the tumor location, but the ability to adjust radiation intensity is lost
Solution Approach 1:
The insertable device is divided into multiple segments: a first insertable body and a second insertable body connected by a bent part. The inner body is further segmented into a first inner body with accommodation spaces and a second inner body with guide spaces. This segmentation allows the device to maintain its bent configuration for reaching tumors while enabling independent rotation of the inner body to adjust radiation intensity.
Solution Approach 2:
The device incorporates dynamic elements including the bent part that allows angular deviation and the rotatable second inner body. The second inner body can rotate around its longitudinal axis to adjust the position of the radiation source relative to the tumor, enabling real-time adjustment of radiation intensity while maintaining the bent configuration for access to difficult-to-reach tumors.
2Device complexity
If the radiation source is fixed in position, then the device structure is simple, but the radiation emission direction and range cannot be adjusted
Solution Approach 1:
The radiation source is not fixed but can rotate within the accommodation spaces. The second inner body rotates around its longitudinal axis, which changes the angular position of the radiation source. This dynamic capability allows adjustment of radiation emission direction and range without requiring a completely complex reconfigurable structure.
Solution Approach 2:
The device uses a nested structure where the first inner body is positioned inside the first outer body, and the second inner body is positioned inside the second outer body. The inner connection part connects these nested components and provides the rotation power mechanism. This nesting allows the radiation source to be adjusted within a compact structure.
3Stability of the object's composition
If the inner body is fixed relative to the outer body, then the device is structurally stable, but the radiation source cannot be repositioned for intensity adjustment
Solution Approach 1:
The connection between the inner body and outer body is made dynamic through the bent part and the rotation power mechanism. The bent part allows angular deviation for stability in the insertion direction, while the rotation power mechanism enables controlled rotation of the second inner body for repositioning the radiation source. This provides both structural stability and repositioning capability.
Solution Approach 2:
The device is segmented into movable and fixed portions. The outer body and first inner body form a relatively stable structure, while the second inner body is designed to rotate independently. The inner connection part with the rotation power mechanism connects these segments, allowing the radiation source to be repositioned while maintaining overall structural stability.
Data Source
AI summary
A body-insertable device having an adjustable radiation emission direction and radiation emission range, which includes a first outer body extending to be long and an accommodation space having a first accommodation space and a second accommodation space having different distances to the first outer body.