Reversible Patch Connection Mechanism for Hernia Repair
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Solution Overview
Problem
Current surgical methods for hernia repair require invasive techniques, leading to significant trauma and prolonged recovery times, with a lack of reversible connection systems between patches and deployment devices.
Innovation Solution
An active reversible connection (ARC) mechanism featuring a connection clip with multiple configurations and a locking bar, allowing for secure attachment and detachment of a prosthetic patch to a patch deployment device without applying force, using a wire actuator for reversible transformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional rigid anchors are used to secure the patch, then the patch attachment strength is improved, but the tissue trauma and difficulty of removal increase
Solution Approach 1:
The connection clip is designed with a resilient body that can dynamically change its configuration between locked and unlocked states. The resilient body flexes to allow the patch to be secured firmly, then returns to release the patch for removal, transforming a static rigid anchor into a dynamic reversible connector that reduces tissue trauma while maintaining attachment strength.
Solution Approach 2:
The connection mechanism changes the physical state of the connection clip from a constrained locked configuration to an unlocked configuration through parameter changes in the resilient body's mechanical state. This allows the same component to provide strong attachment when locked and easy removal when unlocked, resolving the contradiction between attachment strength and tissue trauma.
2Reliability
If the patch is firmly attached to the deployment device, then the deployment reliability is improved, but the reversibility and ease of removal deteriorate
Solution Approach 1:
The connection clip transitions from a static attachment mechanism to a dynamic reversible one. The resilient body can be actuated to change configuration, providing reliable firm attachment during deployment, then easily unlocking for removal when needed, thus improving both reliability and ease of removal.
Solution Approach 2:
The connection clip acts as an intermediary between the deployment device and the patch. It provides the locking mechanism that secures the patch during deployment, then serves as the release mechanism for removal, mediating between the need for firm attachment and easy removal without requiring force application to the patch itself.
3Device complexity
If a simple connection mechanism is used, then the device complexity is reduced, but the reliability of reversible connection deteriorates
Solution Approach 1:
The connection mechanism is segmented into distinct functional components: the resilient body for locking/unlocking, the connection clip for securing the patch, and the actuator for triggering the configuration change. This segmentation allows each component to perform its function reliably while keeping the overall design relatively simple and maintainable.
Data Source
Figure 1A
Figure 2A~2B
Figure 2C~2D
AI summary
The present invention generally relates to a system for closing an aperture in a biological tissue, the system comprising a handle, an elongate shaft connected to the handle, a deployment scaffold connected to the shaft; and a plurality of attachment members connected to the scaffold, wherein the attachment members are configured to releasably retain a surgical implant, and releasing the implant from the scaffold comprises actively transforming the attachment members from a retaining configuration to a releasing configuration.