Adhesion-Promoting Device for Surgical Anastomosis
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Solution Overview
Problem
The progress of adhesion in surgical joints between biological organs is unpredictable due to varying tissue states, leading to potential anastomotic leakage risks.
Innovation Solution
An adhesion promotion device with a biodegradable main body portion featuring an adhesion promotion portion with through-holes and a holding portion with projection portions to enhance tissue adhesion and holding force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a mechanical joining device is used for anastomosis, then the joining force between biological organs is improved, but the risk factors of anastomotic leakage cannot be sufficiently reduced due to varying tissue states
Solution Approach 1:
The main body portion is divided into a first region and a second region formed along an outer edge of the first region. The second region includes an adhesion promotion portion with through-holes that promotes tissue adhesion, while the first region includes a holding portion with projection portions that provides mechanical holding force. This segmentation allows the device to simultaneously provide both mechanical strength and biological adhesion promotion to address varying tissue states.
Solution Approach 2:
Different regions of the main body portion have different functions: the second region's adhesion promotion portion uses a biodegradable sheet with through-holes to promote biological adhesion, while the first region's holding portion uses projection portions to provide mechanical holding. This local differentiation of properties allows the device to adapt to varying tissue states by providing appropriate mechanical and biological functions in different locations.
2Reliability
If the main body portion is made biodegradable to promote tissue adhesion, then biological tissue adhesion is promoted, but the holding force may be insufficient during surgical procedures
Solution Approach 1:
The main body portion is segmented into two functional regions: the second region with adhesion promotion portion made of biodegradable sheet with through-holes that promotes tissue adhesion, and the first region with holding portion that provides mechanical holding force. This segmentation allows the biodegradable material to promote adhesion while the holding portion maintains sufficient holding force during surgery.
Solution Approach 2:
The main body portion combines a biodegradable sheet material with projection portions to create a composite structure that provides both biological adhesion promotion and mechanical holding force. The combination of these materials and structures allows the device to maintain holding force during surgery while promoting tissue adhesion through the biodegradable portion.
Data Source
Figure 1A~1B
Figure 2~3
Figure 4A~4B
AI summary
[Problem] Provided is an adhesion promotion device capable of reducing risk factors of an anastomotic leakage after surgery. [Means for Resolution] An adhesion promotion device 1 has a main body portion 10 disposed between biological organs serving as a joint object. The main body portion has a first region 10A and a second region 10B formed along an outer edge of the first region. The second region includes an adhesion promotion portion 20 that promotes adhesion of a biological tissue. The first region includes a holding portion 30 having a holding force with respect to the biological tissue which is stronger than that of the adhesion promotion portion.