Medical System Mode Switching for ERCP Cannulation Precision
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Solution Overview
Problem
Current endoscopic retrograde cholangiopancreatography (ERCP) procedures face challenges due to operator reliance on endoscope images for cannulation, varying anatomical differences, and the need for manual intervention during precise steps, leading to difficulties in accurately positioning and inserting tools within the biliary duct.
Innovation Solution
A medical system with an electrically driven endoscope that switches between full auto, semi-auto, and manual modes based on procedure steps, allowing automatic control for positioning and intervention during cannulation, enabling precise instrument motion control and avoiding tissue contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full automatic control is used for instrument motion during ERCP procedures, then positioning precision and operational consistency are improved, but the ability to handle varying anatomical differences and perform manual intervention is reduced
Solution Approach 1:
The system dynamically switches between full automatic control mode and semi-automatic control mode based on the procedural phase and anatomical conditions. During initial positioning, full automatic control provides consistent precision, while during cannulation and treatment phases, the system transitions to semi-automatic mode to allow manual intervention for handling anatomical variations.
Solution Approach 2:
The control parameters of the instrument motion are adjusted based on the procedural context. In full automatic mode, parameters are fixed for consistent positioning, while in semi-automatic mode, parameters become adjustable to accommodate different anatomical presentations and operator preferences.
2Adaptability or versatility
If semi-automatic control mode is used allowing manual operation, then adaptability to anatomical variations is improved, but positioning precision and operational consistency deteriorate
Solution Approach 1:
The system transitions from full automatic control during positioning to semi-automatic control during cannulation and treatment phases. This dynamic mode switching allows the system to maintain high positioning precision when needed while providing manual adaptability during complex procedural steps.
3Productivity
If full automatic control is used throughout the procedure, then operational efficiency is improved, but the ability to perform manual intervention during critical steps is reduced
Solution Approach 1:
The system employs dynamic mode switching between full automatic and semi-automatic control based on procedural phase. Full automatic mode enhances efficiency during routine positioning, while semi-automatic mode enables manual intervention during critical cannulation and treatment steps.
Solution Approach 2:
The ERCP procedure is segmented into distinct phases (positioning, cannulation, treatment), with different control modes applied to each phase. This segmentation allows optimal control strategy for each procedural step, maximizing both efficiency and manual capability where needed.
4Adaptability or versatility
If mode switching between full auto and semi-auto is implemented, then overall system versatility is improved, but device complexity increases
Solution Approach 1:
The control mode is represented as a switchable parameter with discrete states (full automatic, semi-automatic). This parameter-based approach simplifies the complexity management compared to continuous control adjustments, as the system transitions between predefined operational states based on procedural context.
Data Source
AI summary
A medical system including: an instrument having a motion that is electrically driven, the motion being forward and backward movement of an insertion section, a bending angle of a bending section of the insertion section, and/or rolling rotation of the insertion section; an operation device performing an operation input of the motion; and a processor. The processor controlling the motion based on the operation input in a motion mode, the motion mode being one of a full auto mode to perform automatic control of the motion and a semi auto mode in which an operator manually controls the motion. When controlling the motion in the semi auto mode, the processor interrupting the semi auto mode by automatic control of the motion to perform intervention, Subsequent to the intervention, the processor switching to one of the full auto mode and the semi auto mode based on a use of the instrument.