Mobile Balloon Device for Precise Brachytherapy Dose Delivery
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Solution Overview
Problem
Current intrauterine brachytherapy systems face challenges in achieving precise and consistent radiation dose delivery while minimizing exposure to non-target tissues, particularly the bladder and rectum, due to the complexity of positioning tandem and ovoid systems during treatment.
Innovation Solution
A brachytherapy catheter and mobile balloon device system is introduced, where a mobile inflatable balloon with a radiation dose delivery tube is slidably positioned along the catheter, allowing for strategic placement and inflation to precise locations within the uterus or other body cavities for targeted radiation therapy, enhancing precision and minimizing exposure to sensitive tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If tandem and ovoid systems are used for brachytherapy, then radiation dose delivery is achieved, but positioning precision and consistency are difficult to maintain
Solution Approach 1:
The device is divided into distinct functional modules: a tandem component for cervical cancer treatment and a mobile balloon device for uterine cavity treatment. This segmentation allows each component to be optimized independently for its specific function, improving overall positioning precision while simplifying the operational complexity of the complete system.
Solution Approach 2:
The mobile balloon device is designed to be slidable along the tandem catheter, with the balloon able to expand within the uterine cavity while the tandem remains positioned in the cervix. This nested configuration allows both components to work together without requiring separate insertion procedures, improving positioning consistency while reducing operational steps.
2Reliability
If radiation dose delivery is targeted to specific locations, then treatment efficacy is improved, but exposure to non-target tissues such as bladder and rectum increases risk
Solution Approach 1:
The mobile balloon device can be positioned at different locations within the uterine cavity and inflated to different volumes, allowing the radiation source to be precisely localized to the specific tumor site. This localizes the high-dose radiation to the target area while minimizing exposure to surrounding healthy tissues such as the bladder and rectum.
Solution Approach 2:
The balloon is designed to be mobile along the tandem catheter and dynamically inflatable to different volumes. This dynamic positioning and sizing capability allows the treatment plan to be adjusted in real-time based on patient anatomy and tumor location, optimizing the radiation dose distribution to maximize tumor coverage while minimizing exposure to adjacent organs at risk.
3Adaptability or versatility
If mobile balloon device is slidable along catheter, then positioning flexibility is improved, but device complexity increases
Solution Approach 1:
The mobile balloon device and tandem catheter are designed as an integrated system where the balloon slides along the tandem rather than requiring separate insertion. This merging of components allows the balloon to be positioned at different locations along the tandem using simple sliding motion, providing positioning flexibility without requiring complex mechanical systems or multiple separate devices.
Data Source
AI summary
Brachytherapy oncology treatment systems and methods are provided. One such system and method employs a catheter or tandem and a mobile balloon device having an enclosed inner volume and an internal surface with an internal perimeter size larger than the external surface perimeter size and adequate to allow sliding longitudinal movement between the catheter or tandem and the mobile balloon device. The mobile balloon device has a radiation dose delivery tube that is at or moves by inflation to a strategic radiation dose delivery location for brachytherapy. An embodiment allows for a multi-part catheter or tandem having a detachable distal section suitable for retaining within a body cavity such as the uterus, both during radiation treatment and during recovery time between radiation treatments. This distal portion can be intended for single-patient use and be disposed of after completion of a radiation treatment session having multiple radiation dose treatment times. One or both of real time in vivo detection and monitoring and hypertherapy features can be included.