Sutureless Anastomosis Device Vessel Compression

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Solution Overview

Problem

Traditional suture-based anastomosis techniques require significant time, effort, and technical skill, making them inefficient and challenging for clinical practices.

Innovation Solution

A sutureless anastomosis device comprising inner and outer mounting faces with contact surfaces that compress a vessel membrane, and an outer cannula for fluidic channel formation, allowing for deployment via catheter and expansion for secure vessel attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional suture-based anastomosis techniques are used, then reliable vessel connection is achieved, but procedural time and technical complexity increase significantly

Engineering Contradiction:

Improvevessel connection reliabilityVSAvoidprocedural time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent extracts and eliminates the suture component from the anastomosis procedure. The device achieves vessel connection through mechanical compression and sealing surfaces rather than requiring sutures, thereby removing the time-consuming suture placement steps while maintaining connection reliability through the compression mechanism and sealing faces.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the manual suture-based mechanical system with a device-driven mechanical compression system. The anastomosis device uses controlled compression forces applied through its structure to secure the vessel connection, substituting the needle-and-thread mechanical system with a compression-based mechanical system that is faster and more consistent.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If traditional suture-based anastomosis techniques are used, then secure vessel attachment is achieved, but technical skill requirements increase

Engineering Contradiction:

Improvevessel attachment securityVSAvoidtechnical skill requirement

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The device incorporates self-aligning sealing surfaces and compression mechanisms that automatically position and secure the vessel connection. The mounting faces and compression structure are designed to self-adjust to the vessel geometry, reducing the need for highly skilled manual manipulation while ensuring secure attachment through the device's inherent mechanical design.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent changes the mechanical parameters of the attachment process by using controlled compression forces and predefined sealing surface geometries instead of variable manual suture tension. This standardization of attachment parameters makes the procedure more predictable and less dependent on individual surgeon skill levels.

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If mounting faces are made flexible for catheter deployment, then ease of insertion is improved, but structural stability during compression may be compromised

Engineering Contradiction:

Improvecatheter deployment easeVSAvoidstructural stability

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

The mounting faces are designed with dynamic properties, being flexible during the insertion phase to accommodate catheter deployment, then transitioning to a stable compressed state during the attachment phase. This dynamic behavior allows the same structure to provide both ease of insertion and structural stability at different stages of the procedure.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent employs flexible mounting face structures that can be compressed and conform to the vessel wall during deployment, then maintain their structural integrity during the compression phase. The flexible material properties allow the mounting faces to bend during insertion while providing sufficient rigidity when compressed against the vessel to ensure stable attachment.

Inventive Principle:

Principle #30Flexible shells and thin films

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 simplifies the anastomosis process by eliminating the need for sutures, reducing procedural time and complexity, while ensuring secure and effective vessel repair.

Implementation Method 1

The inner and outer mounting faces are configured to compress a portion of a vessel membrane of the damaged vessel between the inner and outer contact surfaces

Methodology Applied

Scientific EffectCompression: Compression

Implementation Method 2

the inner and outer mounting faces are constructed from a flexible material configured to compress into a compressed configuration within a catheterized sheath and further configured to expand into an expanded configuration when deployed from the catheterized sheath

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250176962A1Sutureless Anastomosis Device and Uses Thereof

Publication Date: 2025.06.05 WASHINGTON UNIV IN SAINT LOUIS

AI summary

A sutureless anastomosis device configured to facilitate an anastomosis to a side of a damaged vessel is disclosed. The device includes inner and outer mounting faces configured to attached to the inner and outer vessel walls of the damaged vessel to anchor the device to the damaged vessel. The device further includes an outer cannula attached to the exposed surface of the outer mounting face; the outer cannula is configured to attach to a second vessel to form the side-to end anastomosis.