Brachytherapy Tandem with Integrated Camera for Perforation Risk Reduction
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Solution Overview
Problem
Current brachytherapy techniques for treating uterine and cervical cancers are hindered by the risk of uterine perforation during tandem applicator placement and are inefficient due to time-consuming dwell position and time optimization processes, lacking real-time visualization capabilities.
Innovation Solution
A tandem applicator assembly equipped with a camera system that includes a digital camera and LED light, allowing for real-time or near real-time imaging and efficient treatment planning, enabling precise positioning and personalized radiation delivery by visualizing the procedure and facilitating the creation of a treatment plan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If blind tandem insertion is used, then the procedure is simple and quick, but the risk of uterine perforation increases
Solution Approach 1:
A camera system is introduced as an intermediary device between the tandem applicator and the operator. The camera provides real-time visual feedback through a monitor, allowing the operator to see the tandem's position and the uterine cavity environment, thereby eliminating blind insertion while maintaining procedural efficiency
Solution Approach 2:
The camera system provides continuous visual feedback to the operator during tandem insertion. The real-time images displayed on a monitor allow the operator to adjust the tandem position based on actual visual information, ensuring safe placement without perforation while maintaining insertion speed
2Reliability
If real-time imaging is added to the tandem system, then the safety and precision improve, but the device complexity increases
Solution Approach 1:
The camera system is designed to serve multiple functions: it provides real-time imaging for positioning verification, enables treatment planning by visualizing the uterine cavity anatomy, and offers educational value for training purposes. This multi-functionality justifies the added complexity by delivering multiple benefits from a single addition
Solution Approach 2:
Instead of using complex 3D imaging or CT scans, the system uses a simple camera to capture 2D real-time images of the uterine cavity. This optical copying approach provides sufficient visualization for positioning and planning without the complexity of radiological imaging systems
3Manufacturing precision
If traditional dwell position optimization methods are used, then the treatment plan can be developed, but the process is time-consuming
Solution Approach 1:
The camera system is used during the initial tandem insertion to capture real-time images of the uterine cavity and tumor location. These preliminary visual records are then used to pre-plan the dwell positions and times, allowing for more accurate treatment planning without requiring extensive time-consuming measurements and calculations during the actual treatment procedure
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
This solution reduces the risk of uterine perforation and streamlines the brachytherapy process by providing real-time visualization and efficient treatment planning, enhancing the precision and speed of radiation delivery while minimizing exposure to healthy tissues.
Implementation Method 1
The camera system includes at least one digital camera configured to acquire color images from a body cavity of a patient through the transparent cap
Implementation Method 2
A transparent cap is affixed to the lead end. The camera system is disposed inside of the transparent cap
Data Source
AI summary
A tandem applicator assembly for brachytherapy that includes a tandem and a camera system. The tandem has a tubular main body with a trail end and a lead end. A transparent cap is affixed to the lead end. The camera system is removably received by the tandem through the trail end of the tubular main body. The camera system is disposed inside of the transparent cap. The camera system includes at least one digital camera configured to acquire color images from a patient through the transparent cap. The tandem applicator assembly may be used with a treatment planning system and method for customizing a treatment plan for a patient undergoing brachytherapy.