Lumen Reinforcement Anchoring via Tissue Embedment
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Solution Overview
Problem
Current surgical procedures for anchoring medical devices in biological lumens are complex and risky, often resulting in tissue trauma and device migration due to pushing or pulling forces, as they rely on hooks that can tear the tissue wall.
Innovation Solution
A method involving an embedment device with a reinforcement material or structure is used to reinforce the tissue wall by embedding it into the lumen, applying outward force to secure the device, utilizing a body with a cross-section dimension greater than the lumen to prevent migration and using expandable tubes, wire meshes, or projections to anchor securely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hooks are used to anchor the device through the tissue wall, then the device can be anchored, but the tissue wall is torn causing trauma and device migration
Solution Approach 1:
Instead of anchoring from the interior side by penetrating through the tissue wall (conventional approach), the invention anchors from the exterior side by embedding a body into the tissue wall from the outside. This inverts the anchoring direction, eliminating the need for hooks to tear through the tissue wall and causing minimal trauma.
Solution Approach 2:
The invention introduces an intermediary structure (the body embedded in the tissue wall) that serves as an anchor point. This intermediary body is embedded from the exterior side and provides a stable anchoring surface for the device, eliminating the need for direct hook-tissue interaction that causes trauma.
2Reliability
If hooks are used to internally anchor the device, then the device can be secured, but the procedure becomes more complicated and risky
Solution Approach 1:
The invention inverts the anchoring approach by embedding the body from the exterior side rather than using internal hooks. This simplifies the surgical procedure as it eliminates the need for complex hook insertion, tissue penetration, and securement operations from the interior side.
3Force
If the body cross-section dimension is greater than the lumen, then outward force is applied to embed the body, but the body may migrate to the exterior side
Solution Approach 1:
The invention applies different dimensional characteristics to different parts of the body. The body has a cross-section dimension greater than the lumen to generate outward embedding force, but its length is specifically controlled to be less than the tissue wall thickness. This local quality differentiation ensures the body embeds properly without migrating to the exterior side.
Solution Approach 2:
The invention carefully controls and optimizes the dimensional parameters of the body, specifically the ratio between cross-section dimension and length. By maintaining the length to be less than the tissue wall thickness while having the cross-section greater than the lumen, the body achieves stable embedding without migration.
4Strength
If reinforcement material is embedded into the tissue wall, then the tissue wall is strengthened, but the device complexity increases
Solution Approach 1:
The invention merges the reinforcement function with the anchoring function into a single integrated body structure. The same body that embeds into the tissue wall to provide anchoring also serves as the reinforcement element, eliminating the need for separate reinforcement components and simplifying the overall device.
Data Source
AI summary
A tissue wall of a biological lumen may be reinforced by embedding a material or structure into the tissue wall. The reinforcement material or structure may embed by application of outwardly directed force along an interior side of the tissue wall, threading, or injection. The reinforcement material or structure may act as an embedded scaffold that limits expansion or contraction of the tissue wall to pushing or pulling forces. An anchor device, such as a medical device, may anchor to the reinforced portion of the tissue wall.