Endoscope Treatment Instrument Raiser Guide Wire Slit
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Solution Overview
Problem
Current endoscopes face challenges in securely guiding and retracting guide wires during treatments in thin ducts like the pancreatic, bile, and hepatic ducts, leading to cumbersome operations that require multiple personnel and prolong treatment times.
Innovation Solution
An endoscope with a treatment instrument raiser that includes a slit and guide wire guiding unit, allowing the guide wire to be securely engaged and held in place when the raiser is raised, preventing unwanted withdrawal during instrument removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a treatment instrument raiser is used to change the direction of the guide wire from axial to radial direction, then the guide wire can be inserted into thin ducts, but the guide wire may be withdrawn together with the treatment instrument against the operator's will
Solution Approach 1:
The treatment instrument raiser is raised in advance to a predetermined position before the treatment instrument is inserted into the thin duct. This preliminary action positions the raiser to support the guide wire, preventing it from being withdrawn when the treatment instrument is removed later.
Solution Approach 2:
The treatment instrument raiser acts as an intermediary component between the guide wire and the treatment instrument. It provides a mechanical support structure that the guide wire contacts, allowing the guide wire to be redirected and held in position independently of the treatment instrument.
2Manufacturing precision
If the guide wire is held close to the treatment instrument during insertion, then the guide wire can be guided into thin ducts, but the guide wire is withdrawn together with the treatment instrument when it is removed
Solution Approach 1:
The treatment instrument raiser is positioned in advance to provide support at the correct location. This preliminary positioning ensures that when the treatment instrument is later removed, the guide wire remains supported by the raiser and does not withdraw with the instrument.
Solution Approach 2:
The treatment instrument raiser is extracted or separated from the treatment instrument, creating an independent support structure. This allows the guide wire to be supported by the raiser rather than being dependent on the treatment instrument for support, preventing unwanted withdrawal.
3Reliability
If multiple personnel are used to manage guide wire and treatment instrument, then guide wire withdrawal can be prevented, but the operation becomes cumbersome and treatment time increases
Solution Approach 1:
The treatment instrument raiser is designed to automatically support the guide wire through its mechanical structure. When the raiser is positioned, it self-adjusts to contact and support the guide wire, eliminating the need for multiple personnel to manually manage the guide wire position.
Solution Approach 2:
The treatment instrument raiser serves as a mechanical intermediary that automates the guide wire support function. Instead of requiring human operators to continuously manage the guide wire, the raiser provides automatic mechanical support, reducing operational complexity and improving efficiency.
Data Source
AI summary
An endoscope includes an insertion portion and a treatment instrument insertion channel, and is inserted into a body cavity; an operation portion which is connected to a proximal end side of the insertion portion; and a treatment instrument raiser which has a guiding surface for guiding a treatment instrument, and able to rise according to an operation from the operation portion. The raiser includes a slit which is formed on a distal end side of the guiding surface and with which a guide wire guided toward the distal end side opening can be engaged, and a guide wire guiding unit which is formed on an outer periphery of the guiding surface and serves to guide the guide wire into the slit. The guide wire is guided into the slit by the guiding unit, when the raiser is raised by the operation from the operation portion.