Deformable Hook Link for Medical Clip Detachment
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Solution Overview
Problem
Existing ligation devices using clip units face challenges in efficiently releasing the connection between the clip unit and the applicator, particularly in avoiding fragment generation and simplifying the operation for releasing the connection.
Innovation Solution
A medical device featuring a link with a hook, a first deformation portion, and a second deformation portion, which allows for the releasable connection between the treatment portion and the operation wire, enabling easy detachment by deforming the link components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the connection between the applicator and clip unit is released by fracturing a member, then the connection can be released, but fragments are generated which may cause harm
Solution Approach 1:
The patent applies parameter changes by utilizing deformation characteristics of the link member. The link is designed with specific deformation properties that allow it to change shape in a controlled manner during release, transitioning from a connected state to a detached state without fracturing. This deformation-based release mechanism eliminates fragment generation while maintaining ease of operation through the deformation process.
2Ease of operation
If the connection is released by rotating the member, then the connection can be released, but the operation requires more complex steps
Solution Approach 1:
The patent employs dynamics by utilizing the deformation capability of the link member under applied force. The link is designed to deform dynamically in response to the operation wire's movement, automatically transitioning from a connected state to a detached state. This dynamic deformation process simplifies the release operation compared to rotation-based mechanisms, as it requires only a single retraction operation without additional rotational steps.
3Reliability
If a strong connection is made between the applicator and clip unit, then the ligation is secure, but the release requires more force
Solution Approach 1:
The patent applies parameter changes by designing the link with specific deformation characteristics that allow it to maintain strong connection during ligation while enabling easy release. The link's deformation properties are optimized so that under normal ligation forces, the connection remains secure, but when a controlled deformation force is applied during release, the link transitions to a detached state. This controlled deformation mechanism ensures both secure ligation and easy release without requiring excessive force.
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
The solution allows for a secure and efficient ligation process by ensuring the clip unit can be easily detached from the applicator without fragment generation, facilitating smooth operation and reducing the required operating force.
Implementation Method 1
a first deformation portion disposed in the hook and configured to be deformed by movement of the operation wire; a second deformation portion disposed in the hook and configured to be deformed by further movement of the operation wire
Data Source
AI summary
A medical device, a clip unit, and a method for indwelling a clip unit. The medical device includes a treatment portion, an operation wire that can operate the treatment portion, and a link that can releasably connect the treatment portion and the operation wire. The link includes a hook that includes first and second deformation portions, and a base that can be releasably coupled to the hook. The first deformation portion is capable of being deformed by movement of the operation wire, and the second deformation portion is capable of being deformed by further movement of the operation portion after the first deformation portion is deformed.