Trap Balloon Catheter with Adjustable Retainer
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Solution Overview
Problem
Current medical devices face challenges in maintaining the position of a guidewire during catheter exchanges in intravascular procedures, particularly when using differently sized guide catheters, as existing solutions require multiple trap balloon catheters for compatibility with various catheter lengths.
Innovation Solution
A trap balloon catheter system with a slidable retainer mechanism that adjusts the working length of the catheter shaft to prevent the balloon from extending beyond the distal end of the guide catheter, allowing compatibility with multiple guide catheter lengths using a single device, and a trap balloon retainer that can be adjusted between discrete positions to accommodate different catheter sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a trap balloon catheter is designed with a fixed working length, then the device structure is simple, but it cannot be compatible with multiple guide catheter lengths
Solution Approach 1:
The catheter incorporates a slidable retainer mechanism that can be adjusted between discrete positions along the catheter shaft. This dynamic adjustment allows the working length of the catheter to be modified to match different guide catheter lengths, enabling a single device to be compatible with multiple guide catheter sizes without requiring multiple fixed-length catheters
Solution Approach 2:
The retainer mechanism is divided into discrete adjustable positions that can be independently selected. This segmentation allows the catheter to be configured for specific guide catheter lengths while maintaining a simple overall structure, as each position corresponds to a predetermined working length configuration
2Reliability
If multiple trap balloon catheters are used for different catheter lengths, then each catheter is optimized for its specific length, but the device inventory and procedural complexity increase
Solution Approach 1:
The trap balloon catheter is designed as a universal device that can function with multiple guide catheter lengths through the adjustable retainer mechanism. A single catheter type can be used across different procedural scenarios, eliminating the need to maintain multiple specialized catheter types in inventory while preserving reliable guidewire positioning for each application
3Adaptability or versatility
If the trap balloon retainer is fixed at a single position, then the manufacturing process is simple, but it cannot accommodate different guide catheter sizes
Solution Approach 1:
The retainer is manufactured as a dynamic component with multiple discrete positioning capabilities rather than a fixed structure. This allows the same manufactured component to adapt to different guide catheter sizes through positional adjustment, avoiding the need to manufacture multiple different retainer types while still accommodating various catheter configurations
Data Source
AI summary
Medical devices, medical device systems, and methods for using the same are disclosed. An example medical device system may include a guide catheter having a proximal end, a distal end, and a lumen extending therebetween. The guide catheter may be designed to guide a therapeutic catheter to a target site. A guidewire may be disposed within the lumen of the guide catheter. The system may also include a trap balloon catheter including a catheter shaft and a balloon coupled to the catheter shaft. The trap balloon catheter may be designed to extend through the lumen of the guide catheter to a position adjacent to the distal end of the guide catheter. A trap balloon retainer may be coupled to the catheter shaft. The trap balloon retainer may be designed to prevent a distal end of the trap balloon catheter from extending distally beyond the distal end of the guide catheter.