Resilient Ring With Spikes for Diverticulum Closure
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Solution Overview
Problem
Current methods for securing inverted diverticulum serosa to serosa are inadequate in ensuring a tight and secure closure, which can lead to complications such as peritonitis due to potential leaks.
Innovation Solution
An apparatus and method using a resilient ring with spikes to invert and clamp the diverticulum, where the ring has coaxial portions with different compression magnitudes and spikes extending into a central passage to securely engage the tissue, allowing for serosa-to-serosa closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a simple band is used to ligate the diverticulum, then the device complexity is low, but the reliability of secure closure is insufficient
Solution Approach 1:
The ring is designed with non-uniform wall thickness, where the first portion has a greater thickness than the second portion. This creates different compression magnitudes at different locations, with the thicker first portion providing greater compression force to ensure secure serosa-to-serosa closure at the critical closure site while the thinner second portion provides adequate but lesser compression.
Solution Approach 2:
The ring may be constructed with first and second portions made of different materials, allowing optimization of mechanical properties in different regions. The first portion can be made from material with higher compressive strength or stiffness to ensure reliable closure, while the second portion can use material with different properties suitable for its lesser compression role.
2Reliability
If a resilient ring with spikes is used to compress the diverticulum, then the reliability of tissue engagement is improved, but the difficulty of operation increases
Solution Approach 1:
The spikes are pre-positioned on the ring in a retracted or protected state during storage and delivery. Before deployment, the spikes are in a safe configuration that prevents accidental tissue engagement. During the procedure, the spikes are activated or extended only when needed for tissue engagement, ensuring reliable attachment while minimizing operational complexity and risk of premature activation.
3Reliability
If the ring compresses the diverticulum with high force, then the closure security is improved, but the tissue damage risk increases
Solution Approach 1:
The differential wall thickness design ensures that high compression force is applied only where needed - at the first portion with greater thickness that corresponds to the critical closure site. The second portion with lesser thickness applies reduced compression, minimizing the risk of excessive force damage to tissue that does not require high compression for closure.
Solution Approach 2:
The ring's compression parameter is varied spatially through the non-uniform wall thickness design. By changing the thickness parameter of the ring wall at different locations, the compression magnitude is optimized for each region - high compression where closure security is critical and lower compression where tissue protection is the priority.
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 solution effectively secures the diverticulum by compressing it serosa to serosa, reducing the risk of peritonitis and facilitating healing by maintaining a tight closure until the tissue sloughs off.
Implementation Method 1
a resilient ring having one or more spikes that engage the diverticulum
Data Source
Figure 1~2
Figure 3~6
Figure 7~9
AI summary
A compression ring (28, 64, 74, 80, 88, 92, 96, 102, 108, 114, 120, 144, 152, 200, 210, 212, 228, 262) to grip and compress body structure such as diverticulum, hemorrhoids, and tissue adjacent a hole. A resilient ring-shaped body defines a compression channel, and one or more axially rigid elongated spikes (70, 78, 86, 94, 98, 104, 106. 112, 326, 206) extend from the body into the channel. The body defines a first axial segment (64a, 82) surrounding the compression channel and a second axiai segment (64b, 84) surrounding the compression channel, with the spike being engaged only with the second axial segment. The first axial segment more tightly compresses the body structure than the second axial segment.