Movable Raising Stand for Dual-Channel Ultrasound Endoscope
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Solution Overview
Problem
Current ultrasound endoscopes face difficulties in performing both endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) and endoscopic retrograde cholangiopancreatography (ERCP) due to limitations in the raising angle of the treatment instrument, requiring multiple endoscopes and complex switching procedures, which complicates and prolongs operations.
Innovation Solution
An ultrasound endoscope design featuring a movable raising stand that allows for adjustable angles of treatment instruments, enabling both EUS-FNA and ERCP to be performed with a single endoscope by varying the protrusion direction of instruments through distinct channels and contact surfaces, thereby accommodating different procedural requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the raising angle of the treatment instrument is increased to enable ERCP, then ERCP capability is achieved, but the puncture needle may be broken or develop bending tendencies
Solution Approach 1:
The raising stand is designed to be movable rather than fixed, allowing dynamic adjustment of the treatment instrument's protrusion direction. The stand can be positioned at different heights and angles, enabling the system to adapt between EUS-FNA (lower angle) and ERCP (90 degrees or more) configurations without compromising needle integrity or ERCP capability
Solution Approach 2:
The system changes the geometric parameter of the treatment instrument's protrusion angle by adjusting the raising stand position. This allows the same endoscope to achieve different operational parameters suitable for different procedures - a smaller angle for EUS-FNA to protect the rigid needle, and 90 degrees or more for ERCP
2Adaptability or versatility
If multiple endoscopes are used for EUS-FNA and ERCP, then procedural capabilities are complete, but operation complexity and time increase
Solution Approach 1:
The endoscope is designed with universal multi-functionality by incorporating both an EUS-FNA channel and an ERCP channel, along with a movable raising stand that can accommodate different treatment instruments. This single endoscope can perform both EUS-FNA and ERCP procedures, eliminating the need for multiple specialized endoscopes and reducing operational complexity
Solution Approach 2:
The endoscope is segmented into multiple functional channels (EUS-FNA channel and ERCP channel) that can operate independently. This segmentation allows different treatment instruments to be inserted through different channels, enabling both EUS-FNA and ERCP capabilities within a single endoscope system without interfering with each other
3Ease of manufacture
If a fixed raising stand structure is used, then manufacturing is simple, but adaptability to different procedures is limited
Solution Approach 1:
The raising stand transitions from a fixed structure to a movable one that can be adjusted along the insertion portion. This dynamic design maintains manufacturing simplicity while dramatically improving procedural adaptability, allowing the same basic structure to serve both EUS-FNA and ERCP requirements through positional adjustment rather than requiring multiple specialized fixed structures
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables seamless transition between EUS-FNA and ERCP procedures without the need for instrument exchange, reducing operation time, simplifying operator manipulation, and enhancing hygiene management while maintaining effective treatment capabilities.
Implementation Method 1
an ultrasound transducer provided at a distal end portion of the insertion portion and emitting ultrasound sideward at a predetermined angle with respect to an insertion axis of the insertion portion
Data Source
AI summary
An ultrasound endoscope includes an insertion portion, an ultrasound transducer provided at a distal end portion of the insertion portion, a first opening portion provided at a distal end portion of the insertion portion, a second opening portion and a raising stand provided at the distal end portion of the insertion portion. Furthermore, the raising stand includes a first contact portion that comes into contact with a treatment instrument protruding from the first opening portion for causing the treatment instrument to extend in a first direction and a second contact portion that comes into contact with a treatment instrument protruding from the second opening portion for causing the treatment instrument to extend in a second direction different from the first direction.