Interlocking Adhesion Sheet for Anastomotic Leakage Reduction

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Solution Overview

Problem

Existing medical procedures for joining biological organs, such as anastomosis, face challenges in reducing anastomotic leakage due to varying tissue states, which conventional methods like suturing or mechanical joining devices may not adequately address.

Innovation Solution

An adhesion promotion device with a sheet-shaped main body portion having distinct regions and an interlock portion, designed to promote tissue adhesion and secure the device between biological organs, reducing the risk of leakage by covering suture portions and preventing dislodgment.

Engineering Contradictions & Design Principles

VSEngineering 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

Engineering Contradiction:

Improvejoining forceVSAvoidanastomotic leakage risk

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The device divides the functional area into multiple regions: a first region for adhesion promotion, a second region for covering the suture portion, and an interlock portion for mechanical engagement. This segmentation allows each region to perform its specific function optimally, addressing both joining strength and leakage prevention

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the device have different properties tailored to their specific functions. The first region has adhesion-promoting characteristics, the second region provides coverage and protection, and the interlock portion provides mechanical engagement. This local differentiation resolves the contradiction by optimizing each area for its specific purpose

Inventive Principle:

Principle #3Local quality

2Reliability

If a sheet-shaped device is placed between biological organs to promote adhesion, then tissue adhesion is improved, but the device may fall out of the biological organ

Engineering Contradiction:

Improvetissue adhesionVSAvoiddevice position stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The device combines multiple functions into a single integrated structure: adhesion promotion in the first region, coverage of the suture portion in the second region, and mechanical interlocking through the interlock portion. This merging ensures that adhesion promotion and device retention work together rather than in opposition

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The second region is disposed to cover the suture portion, creating a nested configuration where the device encompasses the suture structure. This nesting provides both coverage for adhesion promotion and mechanical retention, resolving the contradiction between adhesion improvement and device stability

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS20260076675A1Adhesion promotion device

Publication Date: 2026.03.19 TERUMO KK

AI summary

An adhesion promotion device is disclosed, which is capable of reducing risk factors of an anastomotic leakage after surgery. The adhesion promotion device includes a sheet-shaped first region disposed between one joint target site and the other joint target site of biological organs to promote adhesion of a biological tissue, a second region provided inward of the first region and separated from the first region in a direction intersecting with a surface direction of the first region, and an interlock portion that interlocks the first region and the second region with each other.