Brachytherapy Clip with Integrated Radiation Capsule
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Solution Overview
Problem
Current surgical brachytherapy implants and applicators are limited in their ability to be placed at desired locations relative to the target cancer site, lacking flexibility in configuration and placement precision, which can impact effective dosimetry and radiation delivery.
Innovation Solution
Development of biocompatible surgical implants, such as clips, pins, and coils, integrated with brachytherapy capsules that can be securely fastened to a target site using a surgical applier, allowing for customizable placement and configuration to achieve precise radiation delivery, with options for material composition like titanium, stainless steel, or polymers, and visibility enhancements through gold or oxide coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radioactive seeds are placed at fixed, uniform distances to one another, then dosimetry guidelines can be followed, but flexibility in placement location is lost
Solution Approach 1:
The surgical implant is segmented into distinct functional components: a biocompatible structural member (clip, staple, or suture) and an integrated radiation source. This segmentation allows the radiation-emitting component to be independently positioned and controlled while maintaining structural integrity, enabling flexible placement at non-uniform intervals to match specific surgical needs while still following dosimetry guidelines.
Solution Approach 2:
The system transitions from static, pre-determined seed placement to dynamic, surgeon-controlled placement. The surgical implant with integrated radiation source can be positioned by the surgeon at any desired location along the surgical site, allowing real-time adaptation to anatomical variations and surgical requirements while maintaining dosimetric control through the prescribed radiation dosage.
2Reliability
If multiple radioactive seeds are used to treat cancer sites, then effective radiation coverage is achieved, but precision in individual placement is reduced
Solution Approach 1:
The radiation source is merged with the biocompatible structural member into a single integrated surgical implant. This combination ensures that each implant unit serves as a self-contained radiation delivery system, maintaining precise placement at the intended surgical location while providing reliable radiation coverage. The integration eliminates the risk of seed migration or misplacement that can occur with separate seed implantation.
3Reliability
If surgical implants are made biocompatible and visible through coatings, then tissue compatibility and surgical visibility are improved, but device complexity increases
Solution Approach 1:
The surgical implant utilizes composite material construction, combining a biocompatible base material (such as surgical steel, titanium, or polymer) with functional coatings (such as gold or colored oxide layers). This composite approach maintains tissue compatibility while enhancing surgical visibility through radiopaque or visually distinct coatings, all within a single integrated implant structure rather than separate components.
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
Enables flexible and precise placement of radiation-emitting implants at any desired location, allowing for tailored dosimetry and improved radiation delivery to cancer sites, reducing exposure to healthy tissues and enhancing treatment efficacy.
Implementation Method 1
a radiation source integrated into or onto the biocompatible member... at least one brachytherapy capsule providing a dose of radiation to the target surgical site
Data Source
AI summary
A surgical implant includes a biocompatible member configured for securement to an underlying target surgical site and a radiation source integrated into or onto the biocompatible member. The surgical implant may be one of a clip, pin, or coil and the radiation source includes at least one brachytherapy capsule, or other radioactive material incorporated therein or provided thereon. The radioactive material provides a dose of radiation to the target surgical site. The surgical implant may also be formed from titanium, stainless steel or polymers. A surgical applier is provided for allowing a surgeon to apply the implant to a patient's tissue.