Distal Wire Stop Adjustable Handle Biliary Exchange
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Solution Overview
Problem
Current short-wire systems for exchanging medical devices in the biliary system lack compatibility with long wire methods, are prone to frictional resistance, and fail to maintain wire guide access, leading to inefficiencies and complications in procedures such as recannulation and stent placement.
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 access and facilitate the exchange of devices without external wire exchange, enabling easier manipulation and reducing friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a long wire guide is used for over-the-wire exchange technique, then device exchange is enabled, but wire guide control is lost and assistant intervention is required
Solution Approach 1:
The wire guide system is segmented into a long portion that remains inside the patient for maintaining access and a short exchangeable portion that can be manipulated externally. This allows the physician to maintain control of the wire guide through the long intrabody portion while enabling device exchange through the short external portion without requiring assistant intervention.
Solution Approach 2:
A wire guide extender is introduced as an intermediary component that couples between the long wire guide portion inside the patient and the short exchangeable portion outside. This intermediary allows the wire guide to function as both a long intrabody guide for maintaining access and a short extrabody component for easy device exchange, eliminating the need for assistant intervention.
2Adaptability or versatility
If a short wire guide is used for rapid exchange technique, then physician control is improved, but compatibility with long wire methods is lost
Solution Approach 1:
The wire guide system is designed with multi-functionality to serve both long wire and short wire exchange techniques. The long wire guide portion can be used with traditional long wire methods, while the short exchangeable portion enables rapid exchange techniques. This universal design allows the same wire guide system to be compatible with both methodologies, eliminating the need to choose between compatibility and ease of manipulation.
3Reliability
If traditional long-wire exchange is used, then device exchange is enabled, but frictional resistance increases and access is lost
Solution Approach 1:
The wire guide is extracted into two separate functional portions: a long intrabody portion that maintains access by remaining stationary inside the patient, and a short exchangeable portion that can be freely manipulated outside. This extraction eliminates frictional resistance between the wire guide and exchanged devices, as the long portion remains in place while the short portion is replaced without requiring movement through the intrabody space.
4Productivity
If assistant intervention is required for wire exchange, then wire positioning is maintained, but procedural efficiency decreases
Solution Approach 1:
The wire guide is segmented into a long intrabody portion that maintains positioning and a short extrabody portion that enables exchange. This segmentation allows the physician to maintain wire positioning through the long portion while performing device exchange through the short portion independently, eliminating the need for assistant intervention and improving procedure efficiency.
Solution Approach 2:
The wire guide system is designed to be self-sufficient for device exchange operations. The short exchangeable portion allows the physician to perform wire-guided device exchange independently without requiring assistant intervention, as the system maintains its own positioning through the long intrabody portion while enabling self-performed exchange through the external portion.
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. The elongate engagement member includes an adjustable handle assembly for adjusting the relative position of the distal end of the elongate engagement member relative to the elongate medical device.