Self-Expanding Anastomosis Device for Irregular Tissue
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Solution Overview
Problem
Current methods for creating anastomoses between tubular tissues, such as blood vessels or intestines, often require suturing and may not provide reliable long-term fixation or adaptability to irregular tissue surfaces, especially in dynamic anatomical environments like the GI tract.
Innovation Solution
An implantable medical device featuring a frame with elongate members that form apposition portions and a central lumen, allowing for self-expansion and conformability to tissue surfaces, along with a covering material for enhanced sealing and tissue integration, facilitating durable and resilient anastomosis connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If suturing is used to create anastomoses, then the connection between tubular tissues can be established, but the method requires complex surgical procedures and may not provide reliable long-term fixation
Solution Approach 1:
The patent replaces traditional mechanical suturing with a self-expanding frame structure that uses elastic memory properties to create the anastomosis. The frame automatically expands to engage tissue surfaces without requiring complex surgical suturing procedures, thereby simplifying the surgical process while maintaining reliable long-term fixation through the frame's structural integrity and tissue engagement features.
2Adaptability or versatility
If traditional anastomosis methods are used, then tissue connection can be achieved, but adaptability to irregular tissue surfaces is limited
Solution Approach 1:
The patent applies local quality by providing the frame with non-uniform cross-sectional shapes and varying engagement features at different locations. The frame includes apposition portions with specific geometries tailored to match irregular tissue surfaces, allowing each local region of the frame to adapt to the specific topography it contacts while maintaining overall connection durability through the integrated frame structure.
3Stability of the object's composition
If a rigid frame structure is used, then structural stability is provided, but conformability to irregular tissue topographies is reduced
Solution Approach 1:
The patent applies dynamics by designing the frame with elastic memory properties that allow it to transition between a compressed delivery state and an expanded operational state. In the expanded state, the frame provides structural stability while simultaneously conforming to irregular tissue surfaces through its elastic deformation capabilities. The frame dynamically adapts its shape to match tissue topography while maintaining structural integrity for durable fixation.
4Ease of operation
If the device is designed for self-expansion, then ease of deployment is improved, but control over expansion timing and positioning may be reduced
Solution Approach 1:
The patent applies preliminary action by pre-configuring the frame with specific expansion characteristics and engagement features that ensure accurate positioning and controlled expansion. The frame is designed with predetermined expansion forces and tissue engagement geometries that automatically guide the expansion process to the correct position and timing, eliminating the need for complex external control mechanisms while maintaining precise deployment.
Data Source
AI summary
An implantable medical device for connecting tissue layers, such as connecting tubular tissues to create an anastomosis, includes a single elongate member and a covering material. The devices provided may also be used for other purposes including, but not limited to, partially or fully occluding openings in tissue, temporarily or permanently holding generally planar layers of tissue together, aneurysm repair, and the like.