Side-Wall Intestinal Anastomosis Device with Elastic Compression
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Solution Overview
Problem
Current anastomosis techniques, particularly in colorectal surgery, face issues with blood circulation and healing during the anastomosis process, leading to complications like leakage and stenosis due to the use of surgical staplers, which can result in morbidity, mortality, and the need for temporary or permanent stomas.
Innovation Solution
A device comprising a first member with an elastic part and a rigid support part, and a second member with a matching axial end, connected via a connection member, allowing for uniform distribution of the intestine wall and radial inward connection, facilitating side-wall anastomosis and reducing pressure on the anastomotic site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If surgical staplers are used to perform anastomosis, then the connection of tissue edges is achieved, but blood circulation is compromised leading to ischemia and inflammation
Solution Approach 1:
The device divides the anastomosis process into two distinct phases: compression phase (using the compression member to secure tissue) and circulation restoration phase (using the expansion member to restore blood flow). This segmentation allows the tissue to be securely connected while subsequently restoring blood circulation to prevent ischemia and inflammation.
Solution Approach 2:
The device transitions from a static compressed state to a dynamic expanded state. The compression member provides initial secure connection, then the expansion member dynamically expands to restore lumen patency and blood circulation. This dynamic transformation resolves the contradiction between needing strong compression for connection and needing space for blood circulation.
2Stability of the object's composition
If surgical staplers create a rigid opening, then structural stability is improved, but the opening becomes smaller leading to anastomotic stenosis
Solution Approach 1:
The device provides structural stability during compression while dynamically restoring lumen area through expansion. The compression member ensures stable tissue apposition, then the expansion member increases the lumen area to prevent stenosis. This dynamic approach resolves the contradiction between stability and lumen patency.
Solution Approach 2:
The compression member performs preliminary action by securing the tissue edges together with stable compression. This preliminary stabilization allows subsequent expansion of the lumen area without compromising the structural integrity of the anastomosis, thereby preventing stenosis while maintaining stability.
3Reliability
If compression is applied to secure tissue edges, then connection reliability is improved, but pressure on the anastomotic site increases leading to potential leakage
Solution Approach 1:
The device segments the compression function from the circulation restoration function. The compression member applies localized pressure only at the tissue interface to ensure reliable connection, while the expansion member subsequently reduces the overall pressure on the anastomotic site by restoring lumen patency and blood flow, thereby preventing leakage.
Solution Approach 2:
The device dynamically transitions from a high-pressure compressed state to a lower-pressure expanded state. Initial compression provides reliable tissue connection, then expansion reduces the pressure on the anastomotic site while maintaining connection integrity, thus preventing leakage while ensuring reliability.
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
This device enhances blood circulation and reduces the risk of leakage and stenosis by providing a secure, uniform connection that minimizes tissue compression and promotes healing, potentially eliminating the need for temporary stomas and reducing long-term complications.
Implementation Method 1
The first member comprises an elastic part, with a first and a second axial end
Data Source
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AI summary
A device (100) for arrangement on the side wall of an intestine is provided. The device (100) comprises a first member (10) and a second member (20) of a generally hollow open configuration. The first member (10) comprises an elastic part (11), with a first and a second axial end, and a rigid support part (12), arranged at the first axial end of the elastic part (11). The second member (20) comprises a first and a second axial end, said first end of the second member (20) matching the shape of the second axial end of the elastic part (11), such that an intestine wall may be uniformly distributed between the second axial end of the elastic part (11) and the second member (20). The device (100) also comprises a connection member (30) for connecting the rigid support part (12) and the second member (20) to each other. A method for arranging said device at the side wall of a tubular structure, and a connector (200) for connecting two devices (100) is also provided.