Braided Biliary Stent Channels for Multi-Duct Drainage Access
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Solution Overview
Problem
Existing medical devices for accessing and draining fluids from the biliary and pancreatic tract face challenges in efficiently navigating the complex anatomy and maintaining access without the need for repeated cannulation, particularly due to the branched nature of these ducts.
Innovation Solution
Development of implantable medical devices, such as braided stents with longitudinal and circumferential channels, designed to be positioned within the duodenum and adjacent to the pancreatic or biliary ducts, allowing for efficient fluid drainage from both main and branch ducts without requiring re-cannulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional catheters and guidewires are used for accessing biliary and pancreatic ducts, then initial access can be achieved, but repeated cannulation is required due to the complex branched anatomy
Solution Approach 1:
The stent is divided into multiple segments including a duodenal portion, a body portion, and a distal portion that can be positioned in different anatomical locations. The body portion contains multiple channels that can independently drain different ductal structures, allowing simultaneous access to multiple ducts without repeated cannulation procedures
Solution Approach 2:
The stent structure serves multiple functions: it acts as a drainage catheter, a structural support, and a multi-channel conduit system. The braided tubular member with integrated channels provides both structural integrity and fluid drainage capabilities, eliminating the need for separate catheters in each duct
2Reliability
If multiple separate catheters are used to drain different ducts, then complete drainage can be achieved, but device complexity increases
Solution Approach 1:
Multiple drainage functions are merged into a single stent structure. The braided tubular member incorporates multiple internal channels that can simultaneously drain the common bile duct, common pancreatic duct, and their branch ducts, replacing the need for multiple separate catheters
Solution Approach 2:
The stent transitions from a simple linear catheter to a three-dimensional braided tubular structure with channels extending in multiple directions. This dimensional complexity allows the single device to access and drain multiple ductal structures that would require separate linear catheters
Data Source
AI summary
Medical devices and method for making and using the same are disclosed. An example medical device may include implantable medical device for use along the biliary and/or pancreatic tract. The implantable medical device may include a tubular member having a first end configured to be disposed within the duodenum of a patient and a second end configured to be disposed adjacent to a pancreatic duct and/or bile duct. The tubular member may have a body including one or more wire filaments that are woven together. The tubular member may also have an outer surface with a longitudinal channel formed therein.