Imaging Wire Access Port for Bile Duct Insertion
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Solution Overview
Problem
Existing methods face challenges in inserting medical devices into the bile duct or pancreatic duct due to narrowed or meandering parts, making it difficult to perform effective treatments.
Innovation Solution
A bile duct/pancreatic duct treatment method involving an endoscope with a channel, an imaging wire with an imaging unit at its distal end, and an access port that allows for the insertion of treatment tools along the imaging wire, enabling precise observation and treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional endoscopes are used to access the bile duct or pancreatic duct, then the device structure is simple, but it is difficult to insert the device due to narrowed or meandering parts of the duct
Solution Approach 1:
The imaging wire is inserted through the endoscope's channel, and the access port is subsequently inserted through the imaging wire. This nested configuration allows each component to pass through the previous one, enabling access to narrow and meandering ducts while maintaining a relatively simple overall device structure.
Solution Approach 2:
The medical device is divided into separate functional components: the endoscope for initial access, the imaging wire for guidance and visualization, and the access port for treatment tool delivery. This segmentation allows each component to be optimized for its specific function and inserted sequentially through narrow passages.
2Measurement precision
If conventional endoscopes without imaging wires are used, then the device structure is simpler, but the ability to observe the duct cavity is insufficient
Solution Approach 1:
The imaging wire acts as an intermediary tool that carries the imaging unit through the endoscope channel and into the duct cavity. This intermediary approach enables high-resolution observation without requiring the entire endoscope to be inserted into the narrow duct.
Solution Approach 2:
The imaging function is extracted as a separate wire-based unit that can be independently inserted into the duct cavity through the endoscope channel. This allows the imaging capability to be positioned precisely at the target location while the main endoscope body remains outside the narrow passage.
3Adaptability or versatility
If treatment tools are inserted without an access port, then the device structure is simpler, but the ability to perform targeted treatment is reduced
Solution Approach 1:
The access port serves as a universal interface that can accommodate various treatment tools while being inserted through the imaging wire. This multi-functional component enables different treatment modalities to be delivered through the same access pathway, enhancing treatment versatility without proportionally increasing device complexity.
Data Source
AI summary
A bile duct/pancreatic duct treatment method includes: positioning an endoscope having a channel from a duodenum to an opening of a papilla; inserting an imaging wire having an imaging unit at its distal end through the channel from the opening to a common duct; inserting the imaging wire into one of cavities of a bile duct and a pancreatic duct; observing the one of the cavities using the imaging unit; and if treatment with a treatment tool is required, inserting an access port through which the treatment tool can be inserted along the imaging wire into the one of the cavities.