Distal Wire Stop for Biliary Device Exchange
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current short-wire systems for exchanging medical devices in the biliary system lack compatibility with long wire methods, lead to loss of wire guide access, and are inefficient due to frictional resistance and incompatibility with different wire diameters, requiring external exchanges and reliance on skilled assistants.
Innovation Solution
The ultra-short wire technique allows for remote uncoupling of medical devices within the work site, using a shorter wire guide and an alignment indicator system to maintain wire guide access, enabling efficient exchange of devices without external manipulation, and accommodating longer wires through a coupling mechanism for traditional exchanges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a long wire guide is used for traditional over-the-wire exchange, then device exchange is possible, but wire guide access is lost and assistant skill is required
Solution Approach 1:
The wire guide system is segmented into a long indwelling wire guide that remains in place and a shorter exchange wire that is introduced through a side access port. This segmentation allows the long wire guide to maintain access while the shorter exchange wire enables device exchange without requiring the entire long wire to be manipulated externally.
Solution Approach 2:
A side access port acts as an intermediary structure in the catheter that allows the exchange wire to enter and exit without requiring the wire to pass through the distal tip. This intermediary port enables wire exchange while the long wire guide remains indwelling, maintaining access without requiring external manipulation.
2Adaptability or versatility
If a short wire guide is used for rapid exchange, then physician control is improved, but compatibility with long wire methods is lost
Solution Approach 1:
The catheter system is designed with multi-functionality to accommodate both long wire and short wire exchange methods. The side access port configuration allows the same catheter to support either traditional long wire exchange or rapid exchange techniques, making the system universal and adaptable to different wire guide lengths and exchange procedures.
3Productivity
If traditional long wire exchange is used, then device exchange is achieved, but frictional resistance increases and efficiency decreases
Solution Approach 1:
The exchange wire is extracted from the distal tip pathway and routed through a side access port. This extraction eliminates the need for the wire to traverse the entire length of the catheter through the distal tip, significantly reducing frictional resistance and improving exchange efficiency by shortening the friction path.
4Ease of operation
If external wire manipulation is required, then device exchange is possible, but reliance on assistant skill increases
Solution Approach 1:
The side access port configuration enables the physician to perform wire exchange independently without requiring an assistant to manipulate the wire externally. The wire can be introduced and exchanged through the side port while the physician maintains control, making the system self-sufficient and reducing dependence on assistant skill.
Data Source
AI summary
A method and apparatus for releasably securing a wire guide to an elongate medical device for introduction into a work site with the bodily lumen of a patient. An elongate engagement member is configured to engage the wire guide while it is coupled to the elongate medical device and is configured so as to prevent relative movement between the wire guide and the elongate medical device.