Tissue Interface Device With Deployable Wired Structure
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Solution Overview
Problem
The interface between rigid or semirigid medical devices and malleable tissue poses risks of leakage and improper tissue ingrowth, leading to blockages and instability in medical procedures.
Innovation Solution
A biologic tissue interface device with a core and sleeve structure, featuring a deployable portion that transitions between configurations to stabilize the device and facilitate tissue ingrowth, using materials like nitinol and fibrous materials to prevent occlusion and support neointima formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid or semirigid device is used to access an interior cavity of a hollow organ, then the device can provide structural support and stability, but the interface between the device and malleable tissue poses a risk for leakage of bodily fluid
Solution Approach 1:
The patent employs a flexible seal element that conforms to the tissue interface, creating a reliable seal between the rigid device and malleable tissue. The flexible material adapts to tissue movement and deformation while maintaining the seal integrity, preventing bodily fluid leakage.
Solution Approach 2:
The device utilizes composite construction combining rigid structural components with flexible sealing materials. This composite approach allows the device to maintain structural support while the flexible portion ensures reliable sealing at the tissue interface.
2Ease of operation
If a foreign object is placed on or within the interior cavity to facilitate access, then the device can provide access and support, but the presence of the foreign object poses a risk of improper ingrowth of tissue, which can block ports or other flow paths
Solution Approach 1:
The device incorporates a flow maintenance structure with specific local properties that encourage proper tissue ingrowth in certain areas while preventing blockage of flow paths. The structure has differentiated zones with varying characteristics to guide tissue growth away from critical flow channels.
Solution Approach 2:
The flow maintenance structure acts as an intermediary between the rigid device and the tissue, mediating the interaction to prevent harmful tissue ingrowth. It provides a controlled interface that allows necessary tissue integration while maintaining open flow paths.
3Ease of operation
If a foreign object is placed on or within the interior cavity to facilitate access, then the device can provide access and support, but the presence of the foreign object can fail to provide stable neintima to support and stabilize the object
Solution Approach 1:
The device includes a stabilization structure with specific physical parameters (porosity, surface area, mechanical properties) designed to promote stable neointima formation. The structure's parameters are optimized to support tissue growth and provide long-term stability.
Solution Approach 2:
The stabilization structure is pre-configured with properties that facilitate proper tissue ingrowth and neointima formation from the outset. The structure is designed in advance to guide and support stable tissue integration, ensuring long-term device stability.
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 device provides a stable interface for medical devices, preventing leakage and tissue deposition, allowing smooth fluid passage and supporting stable tissue integration, thus ensuring effective and safe access to internal organs.
Implementation Method 1
a deployable portion coupled to the body structure adjacent the first end of the core, the deployable portion having a wired structure transitionable between a retained configuration and a deployed configuration
Data Source
AI summary
In an aspect, a device includes a body structure including a core and a sleeve disposed around at least a portion of the core, the core defining a channel through the core extending from a first end of the core to a second end of the core, the sleeve including a flange adjacent the second end of the core; and a deployable portion coupled to the body structure adjacent the first end of the core, the deployable portion having a wired structure transitionable between a retained configuration and a deployed configuration, wherein a top portion of the wired structure extends beyond the first end of the core in a longitudinal direction when the wired structure is in the retained configuration, and wherein first end of the core extends beyond the top portion of the wired structure when the wired structure is in the deployed configuration.