Anastomosis Device Rigid Elastic Segmentation
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Solution Overview
Problem
Current surgical anastomosis techniques using mechanical staplers face issues such as anastomotic leakage, stenosis, and insufficiency, leading to increased morbidity and mortality, as well as the need for temporary stomas and repeated dilatations, due to inadequate blood circulation and tissue compression during healing.
Innovation Solution
A device comprising rigid and elastic members with a connection mechanism that applies uniform pressure to tubular structures, inducing ischemia to promote healing by creating a circumferential area of tissue response, which seals the anastomosis, and includes a method for mounting the device to ensure even pressure distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mechanical staplers are used for 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 for sealing and cutting phase for separation. The compression element applies uniform pressure to seal the anastomosis and preserve blood circulation, while the cutting element is introduced later to separate the tissue after the seal is established, avoiding the simultaneous compression and cutting that causes ischemia in traditional staplers
Solution Approach 2:
The device performs preliminary compression and sealing of the anastomosis before introducing the cutting element. The compression element is deployed first to create a sealed connection that maintains blood circulation, and only after this preliminary sealing is established is the cutting element introduced to separate the tissue, preventing ischemia by ensuring the seal is in place before cutting
2Stability of the object's composition
If staplers create a rigid opening, then the anastomosis is structurally stable, but the lumen cross section is reduced causing stenosis
Solution Approach 1:
The compression element is made of a flexible, radially expandable material that can be compressed radially inward to seal the anastomosis while maintaining the natural flexibility and patency of the lumen. The flexible material allows the lumen to maintain its original cross-section and prevent stenosis while providing structural stability for healing
Solution Approach 2:
The compression element is designed to be radially expandable and compressible, allowing it to dynamically adapt to the lumen's natural movements and pressures. This dynamic capability enables the device to maintain a wide, flexible lumen opening that prevents stenosis while providing sufficient compression for sealing and stability for healing
3Reliability
If uniform pressure is applied to the tubular structure, then wound healing is enhanced through localized inflammatory response, but tissue compression may compromise blood circulation
Solution Approach 1:
The device separates the compression function from the cutting function in time and space. The compression element applies uniform pressure to enhance healing through controlled inflammatory response, while the cutting element is introduced later through a separate access path after the compression phase is complete, ensuring that blood circulation is not compromised during the healing-promoting compression phase
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 enhances wound healing by initiating a localized inflammatory response, recruiting leukocytes and stimulating tissue regeneration, reducing the risk of leakage and stenosis, and allowing for effective anastomosis without the need for temporary stomas or repeated dilatations.
Implementation Method 1
each comprises a rigid part and an elastic part, respectively... applies uniform pressure to tubular structures
Data Source
AI summary
A device for anastomosis of a tubular structure comprises first and second hollow members having a rigid part and an elastic part, and a connection member for interlocking the first and second members. The elastic parts are essentially circular rings, and are made of a polymeric, a biocompatible and/or biodegradable material. The rigid parts have an outer surface that is partly semi-circular in cross section, wherein the diameter at a non-connecting end is larger than or equal to the diameter at a connecting end, which ends in an edge. The first and second members are connected to each other so that a distance is formed between the elastic parts. A cavity is formed between the rigid parts and the connection member and the tubular structure, when arranged in the device.