Expandable Tissue Anchor for Lymph Node Stabilization
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Solution Overview
Problem
Current translumenal procedures for removing lymph nodes are limited by the need for multiple instruments and lack of efficient stabilization methods, which can complicate the process and increase procedural complexity.
Innovation Solution
An expandable device with deployable members that can assume a parachute-shaped configuration to surround and stabilize lymph nodes, facilitated by a T-anchor and suture system for secure engagement and removal through a visceral wall, utilizing a nickel-titanium alloy for self-expansion and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate instruments are used for translumenal lymph node removal, then the procedure can be performed with established techniques, but the device complexity and procedural complexity increase
Solution Approach 1:
The patent combines multiple separate instruments (cutting instrument, endoscope, closure instrument) into a single integrated apparatus that can perform all functions through one lumen. The deployable member with T-anchor and suture system integrates stabilization, capture, and removal functions that previously required separate devices.
Solution Approach 2:
The deployable member serves multiple functions: it stabilizes the lymph node against the visceral wall, captures the node through T-anchor engagement, and facilitates removal through suture retraction. This multi-functional component replaces several specialized instruments.
2Reliability
If traditional stabilization methods are used during translumenal procedures, then the procedure can be performed with conventional techniques, but the stabilization effectiveness is insufficient
Solution Approach 1:
The T-anchor is deployed in advance to engage the lymph node before the deployable member is fully expanded. This preliminary anchoring action stabilizes the node against the visceral wall, creating a secure foundation for subsequent capture and removal operations.
Solution Approach 2:
The T-anchor acts as an intermediary mechanism between the deployable member and the lymph node. It provides reliable engagement and stabilization by anchoring into the node tissue, allowing the deployable member to effectively capture and retract the node without direct mechanical contact that could damage surrounding tissues.
3Ease of operation
If a simple insertion tool is used to deliver the device, then the ease of operation improves, but the device cannot achieve adequate engagement and stabilization of the lymph node
Solution Approach 1:
The deployable member transitions from a compressed delivery state to an expanded functional state after deployment. This dynamic transformation allows the member to achieve adequate engagement and stabilization of the lymph node while maintaining simplicity during the delivery phase through the insertion tool.
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 efficient and stable removal of lymph nodes with reduced procedural complexity by providing a single device for stabilization and extraction, enhancing the precision and effectiveness of translumenal lymph node removal.
Implementation Method 1
The deployable member may comprise a nickel-titanium alloy that is configured to self-expand to the parachute-shaped configuration or another suitable configuration
Data Source
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Figure 2B
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AI summary
The present embodiments provide apparatus and methods suitable for removing lymph nodes or providing a tissue anchor during a translumenal procedure. In one embodiment, an apparatus suitable for facilitating removal of a lymph node comprises an expandable device including at least one deployable member having contracted and expanded states. The deployable member may be delivered in the contacted state to a location distal to the lymph node using an insertion tool adapted to be disposed beyond the lymph node. In the expanded state, the deployable member comprises a configuration sized to at least partially circumferentially surround and engage the lymph node. In an alternative embodiment, the deployable member may anchor into an outer portion of a visceral wall to promote stabilization of a system during a medical procedure.