Latching Wire Clip for Smooth Tissue Compression Control
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Solution Overview
Problem
Current surgical clips with wire bodies biased into a closed configuration complicate application and limit differential pressure application, potentially causing tissue rupture during aneurysm procedures due to abrupt compression.
Innovation Solution
A surgical clip design featuring a wire body with a latching mechanism, comprising first and second leg members and a hinge portion, allowing for a smooth transition between open and closed configurations without additional handling or compressing, facilitating secure tissue ligation while reducing stress on the tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wire body is biased into the closed configuration, then the clip can secure tissue effectively, but the application process becomes more complex and requires additional handling
Solution Approach 1:
The biasing mechanism is extracted from the wire body itself and replaced with an external actuation system. The wire body is made neutrally configured, removing the inherent bias that caused application complexity. The closing action is achieved through external force applied by the applier rather than through the wire's own biasing force.
Solution Approach 2:
Instead of biasing the wire body to naturally close, the design inverts the approach by making the wire neutral and using external actuation to close it. The default state is open/neutral rather than closed, and closing requires active intervention rather than passive biasing.
2Productivity
If the wire body is biased into the closed configuration, then the clip can close automatically, but differential pressure control is minimized and may cause tissue rupture
Solution Approach 1:
The biasing force that causes abrupt compression is extracted from the wire body design. By making the wire neutrally configured rather than pre-biased, the harmful abrupt compression force is removed. The closing action becomes controllable through external application rather than uncontrolled elastic recovery.
Solution Approach 2:
The neutral wire configuration acts as a cushioning element that prevents abrupt compression. Without pre-stored elastic energy in a biased state, the wire can close more gradually under external control, preventing sudden tissue rupture while still achieving effective ligation.
3Object-affected harmful factors
If the wire body is made neutral rather than biased, then differential pressure can be applied smoothly, but additional handling or compressing is required during application
Solution Approach 1:
The neutral wire body serves itself by being controllable through external actuation. Rather than requiring complex internal biasing mechanisms, the wire's neutral state allows it to be controlled directly by the applier's action, simplifying the overall system while maintaining smooth pressure application.
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 clip effectively secures tissue without over-compression, providing uniform pressure distribution and reducing the risk of tissue rupture, making it suitable for various surgical applications including blood vessels and aneurysms.
Implementation Method 1
a hinge portion joining the proximal end portions of the first and second leg members. The surgical clip may be movable between an open configuration where the distal end portions of the first and second leg members are spaced apart and a closed configuration where the second leg member is received between the first and second free end portions on the first leg member, and the first and second leg members pivot about the hinge portion
Data Source
AI summary
A surgical clip may include a wire body having first and second free end portions. The surgical clip may also include first and second leg members connected by a hinge portion. The first leg member may include first and second segments of the wire body, the first segment may be spaced from the second segment, and the first and second free end portions may be disposed on a distal end portion of the first leg member. The second leg member may include third and fourth segments of the wire body, the third segment being spaced from the fourth segment. The hinge portion may join proximal end portions of the first and second leg members. The surgical clip may be movable between an open configuration and a closed configuration, wherein the second leg member is received between the first and second free end portions on the first leg member, and the first and second leg members pivot about the hinge portion to move the surgical clip between the open configuration and the closed configuration.