Modular Brachytherapy Carriers for Anatomical Conformability
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Solution Overview
Problem
Current brachytherapy devices are inadequate in accommodating anatomically conformal and reproducible dosing, failing to provide real-time dosimetric customization for sparing normal tissue while delivering effective radiation to tumors, and lack integration with additional therapeutic agents.
Innovation Solution
A dosimetrically customizable brachytherapy system featuring radionuclide carrier systems with tiles and gores made of biocompatible materials, incorporating high Z materials for radiation sparing, and capable of incorporating chemotherapy and other therapeutic agents, with customizable shapes and sizes to fit specific tumor anatomy, and real-time dosimetry planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If current brachytherapy carriers are used, then the treatment can be delivered, but the carriers are unable to easily accommodate anatomically conformal and reproducible brachytherapy doses
Solution Approach 1:
The brachytherapy carrier is divided into multiple modular components including a carrier body, interchangeable applicators, and customizable seed arrangements. This segmentation allows precise dosimetric control through modular assembly while adapting to different anatomical configurations through interchangeable applicators designed for specific tumor locations and shapes.
Solution Approach 2:
The carrier system implements local quality by allowing different regions of the carrier to have different properties - the carrier body provides structural support and radiation shielding, while interchangeable applicators provide anatomical conformability, and seed positions provide dosimetric precision. Each component can be optimized for its specific function while working together as an integrated system.
2Object-affected harmful factors
If current brachytherapy devices are used, then radiation can be delivered to tumors, but they do not facilitate real-time dosimetric customization for sparing normal tissue
Solution Approach 1:
The carrier system incorporates dynamic dosimetric customization capabilities through programmable seed arrangements and adjustable applicators that can be configured in real-time based on patient-specific anatomy and tumor characteristics. The system allows dynamic adjustment of radiation source positions, shielding configurations, and seed distributions to optimize normal tissue sparing while maintaining dosimetric precision.
Solution Approach 2:
The system enables parameter changes by allowing modification of critical dosimetric parameters including seed activity, source-to-tumor distance, shielding thickness, and applicator positioning. These parameters can be adjusted during treatment planning and delivery to customize the radiation dose distribution according to patient-specific requirements, thereby sparing normal tissue while effectively treating the tumor.
3Adaptability or versatility
If current brachytherapy carriers are used, then radiation therapy can be administered, but they are not able to incorporate additional therapeutic agents, including chemotherapy, and viral, targeted, and DNA damage repair inhibitors
Solution Approach 1:
The carrier system achieves universality by designing a multi-functional platform that can deliver radiation therapy while simultaneously incorporating additional therapeutic agents. The carrier body and applicators are designed with integrated compartments and attachment mechanisms that accommodate chemotherapy agents, viral vectors, targeted therapy molecules, and DNA damage repair inhibitors. This multi-functional design allows a single carrier system to provide combined modality treatment without requiring separate devices for each therapy type.
Solution Approach 2:
The carrier system implements the nested doll principle by placing multiple therapeutic agents within the carrier structure - radiation sources are positioned within the carrier body, while chemotherapy agents, viral vectors, and other therapeutic molecules are incorporated into the carrier matrix or attached to the applicators. This nested arrangement allows multiple therapeutic modalities to be delivered simultaneously from a single integrated platform, enhancing tumor treatment effectiveness while maintaining carrier design simplicity through hierarchical organization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the therapeutic index by allowing precise radiation delivery to tumors while sparing normal tissue, enabling effective treatment of variable tumors with improved tumor control and reduced morbidity, and facilitating the use of additional therapeutic agents.
Implementation Method 1
a layer of tantalum, tungsten, titanium, gold, silver, or alloys of these or other high Z materials as a foil, grid or strip, internal to or on a surface of the carrier to facilitate sparing of normal tissue by diminishing the penetration of the radiation into adjacent normal tissues
Implementation Method 2
diminishing the penetration of the radiation into adjacent normal tissues
Implementation Method 3
biocompatible materials of differing thicknesses below and/or above a radiation source to act as a spacer to achieve a desired radiation dose delivery and a sparing of normal tissue
Implementation Method 4
one or more individual implantable carriers configured to hold radioactive seeds in a precise location relative to a treatment area
Implementation Method 5
delivering effective and safe doses of radiation to tumors
Data Source
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AI summary
Brachytherapy radioisotope carrier systems and methodology for providing real-time customized brachytherapy treatment to subjects with tumors difficult to control using conventional radiation therapy techniques. The invention generally relates to devices, methods and kits for providing customized radionuclide treatments, to help cure, slow progression or regrowth, or ameliorate the symptoms associated with tumors.