Closure Device With Independent Grasping Sections
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Solution Overview
Problem
Existing closure devices struggle to smoothly close large perforations in tissue due to fixed movement patterns and simultaneous opening/closing mechanisms, which limit their effectiveness in grasping and sealing.
Innovation Solution
A closure device with independently operable grasping sections and a holding mechanism that allows for adjustable movement and gripping of tissue, enabling the device to seal large perforations by moving the grasping sections independently and using a connecting portion with adjustable tension to secure the tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed movement pattern is used for movable clips, then the device structure is simple, but the device cannot smoothly close large perforations requiring rotation
Solution Approach 1:
The movable clips are designed with dynamic movement capability, allowing them to move not only in the longitudinal direction but also rotate around the device axis. This dynamic movement pattern enables the clips to adapt to large perforations by rotating to different orientations, while the movement guide structure controls the rotation to maintain functional effectiveness.
2Adaptability or versatility
If simultaneous opening and closing of grasping jaw members is used, then the control mechanism is simple, but the device cannot smoothly close large perforations
Solution Approach 1:
The grasping function is segmented into multiple independent movable clips rather than a single simultaneous action. Each movable clip can be controlled independently to move and rotate, allowing sequential or differential engagement with tissue edges around large perforations, providing adaptive closure capability.
Solution Approach 2:
The control mechanism allows dynamic and differential movement of each movable clip through the movement guide structure. The clips can move independently in response to operating wire manipulation, enabling adaptive closure of large perforations where different clips engage at different times or positions.
3Ease of operation
If the movable clips are constrained to predetermined fixed movement, then the device is easy to operate, but the procedure cannot be smoothly performed for large perforations
Solution Approach 1:
The movable clips maintain ease of operation through the movement guide structure that naturally guides their dynamic movement. The guide structure ensures that even as clips rotate and move adaptively, their motion follows predetermined safe paths, maintaining operational simplicity while enabling closure of large perforations.
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 smooth closure of large perforations by allowing independent movement and gripping of tissue sections, effectively sealing the perforation even when the tissue is widely separated.
Implementation Method 1
first and second movable grasping portions (43A, 43B) made from an elastic material, the lower ends (43a, 43b) of the first and second movable grasping portions (43A, 43B) are fixed to the distal end side of the supporting part (20)
Data Source
AI summary
A closure device includes a protruding member that is detachably provided at a distal end of a longitudinal member; a pair of grasping members that are turnable with respect to the protruding member; first and second linear members that are connected to the pair of grasping members; and a holding portion that has an action portion for applying a force in a direction in which the pair of grasping members approach the protruding member and is detachably provided at a distal end of the longitudinal member.