Endoscopic Clip Removal Tool with Locking and Release Mechanism
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Solution Overview
Problem
Clip treatment tools for endoscopes often leave clips indwelled in the body after treatment, as they cannot be reliably removed at any timing, leading to potential complications and inefficiencies.
Innovation Solution
A clip treatment tool comprising an operating part, a clip with lockable arms, and a clip removal part that allows the clip to be locked and unlocked to facilitate removal, using mechanisms like a tubular retaining pipe, spring member, and snare-like or gripping forceps to manage the clip's state and position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clip is ligated to the treatment part and indwelled in the patient's body, then the treatment effect (occlusion, hemostasis) is achieved and maintained, but the clip cannot be removed at any timing and must be left behind in the living body
Solution Approach 1:
The clip system transitions from a static indwelled state to a dynamic removable state through the release mechanism. The clip can be actively removed from the treatment part at any timing by operating the release mechanism, allowing the system to adapt between maintaining treatment effect and enabling clip removal based on clinical needs
Solution Approach 2:
The release mechanism acts as an intermediary between the operator and the indwelled clip. This intermediary device (comprising release forceps or a snare and pull wire) enables controlled interaction with the indwelled clip, allowing for its active removal without requiring natural detachment or surgical intervention
2Reliability
If the clip arms are locked to the closed state by the clip locking part, then the treatment part is securely ligated, but the clip cannot be removed or reopened
Solution Approach 1:
The release mechanism serves as an intermediary tool that interacts with the locked clip structure. The release forceps engage with the clip body or the snare engages with the clip arms to provide controlled force for releasing the locked state, making the removal operation feasible while maintaining ligation security during treatment
Solution Approach 2:
The clip removal function is segmented into distinct operational components: the release forceps or snare for engaging the clip, the pull wire for transmitting removal force, and the operating part for controlling the removal action. This segmentation allows the locked ligation function and the removal function to operate independently
3Adaptability or versatility
If a clip removal part is added to enable active removal of the clip, then the clip can be removed at any timing, but the device complexity increases
Solution Approach 1:
The release mechanism is designed to work with standard endoscopic instruments and channels, allowing it to be integrated into existing endoscopic systems without requiring entirely new specialized equipment. The pull wire mechanism can be operated through standard endoscopic access, making the removal capability universally applicable
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 reliable maintenance of the clip's state during treatment and allows for timely removal of the clip from the body, addressing the issue of clips being left behind and improving procedural efficiency.
Implementation Method 1
a spring member that biases the clip body housed within the retaining pipe to a distal side of the retaining pipe
Data Source
AI summary
In a clip treatment tool, a clip locking part brings arms into a closed state after the arms are brought into a closed state in a state where distal ends of the arms of the clip brought into an open state is pressed against a treatment part and the treatment part is ligated to the distal ends of the arms brought into the closed state. After the clip in which the arms are locked to the closed state is separated from the sheath part and indwelled in the treatment part, the clip removal part is indwelled in the treatment part, the locking of the arms locked to the closed state is released, the arms are brought into the open state as the locking is released, and the clip removed from the treatment part is maintained and taken out.