Echo-Opaque Catheter for Prostate Treatment Visualization
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Solution Overview
Problem
Current techniques for identifying the urethra within the prostate during brachytherapy or cryoablation procedures lack effective visualization methods, leading to potential urethral toxicity and complications due to inadequate spacing between treatment elements and the urethra, with existing systems causing patient discomfort and limited compatibility with common imaging modalities.
Innovation Solution
A flexible, echo-opaque catheter with a hyper-echogenic and radio-opaque tip and balloon, designed for real-time visualization under ultrasound and X-ray, providing clear and standardized imaging of the urethra to ensure precise placement of treatment elements while maintaining maximum spacing from the urethra.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional catheters without echo-opaque materials are used, then the catheter is less invasive and more comfortable, but the urethra cannot be visualized under ultrasound or X-ray imaging
Solution Approach 1:
The catheter incorporates echo-opaque materials (such as radiopaque markers or echogenic coatings) only in specific segments or at the tip, rather than making the entire catheter opaque. This localized application provides sufficient visualization capability for urethral identification while minimizing the overall invasiveness and patient discomfort associated with fully opaque materials.
2Reliability
If treatment elements are placed closer to the tumor for effective treatment, then treatment efficacy improves, but the risk of urethral toxicity increases
Solution Approach 1:
The echo-opaque catheter enables real-time visualization under ultrasound or X-ray imaging during treatment element placement. This provides continuous feedback to the practitioner about the relative positions of treatment elements and the urethra, allowing for precise positioning that maximizes tumor treatment while maintaining safe spacing from the urethra to prevent toxicity.
3Measurement precision
If existing urethra identification techniques are used, then some visualization is achieved, but the visualization is inconsistent and causes patient discomfort
Solution Approach 1:
The catheter itself generates the visualization signal through its integrated echo-opaque materials that reflect ultrasound waves or appear on X-ray images. This self-service capability eliminates the need for external contrast agents, inflatable balloons, or manual manipulation techniques that cause patient discomfort, while providing consistent and reliable urethral identification throughout the 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
Enhances the accuracy of treatment element placement, reducing urethral exposure to radiation and minimizing postoperative complications by providing a clear, sustained visualization of the urethral anatomy, thus optimizing treatment efficacy and patient safety.
Implementation Method 1
generating, acoustic or visual interface that is effectively visible utilizing common diagnostic modality such as ultrasound equipment
Implementation Method 2
radio-opaque tip and balloon, designed for real-time visualization under ultrasound and X-ray
Data Source
AI summary
A urethral catheter and its method of use to identify a patient's urethral anatomic course for the precise placement of a treatment element into the patient's prostate are provided. An echo-opaque urethral catheter including an echogenic material and a radio-opaque material in at least an image portion thereof is introduced into a urethra until its echogenic and radio-opaque image portion is generally aligned with a treatment site of the prostate. An image probe positioned relative to the treatment site is activated to obtain a real time image of the prostate and urethra by ultrasound or X-ray imaging. The echo-opaque urethral catheter includes an elongated flexible catheter, at least the image portion of which, is coated with, incorporates within or is enclosed by the echogenic and radio-opaque materials that enhance ultrasound and radio visualization.