Insertable Prosthesis with Flange Openings for Sutureless Anastomosis

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Solution Overview

Problem

Current anastomotic devices face limitations such as the need for clamping and suturing, restricted applicability due to size and type of grafts, risk of thrombosis, and foreign body reactions, especially in fragile or calcified tissues, and are often complex to use, leading to inefficiencies and complications in vascular and tissue anastomosis procedures.

Innovation Solution

A prosthetic device with multiple lateral inserts and a tubular member, featuring a flange with spaced-out openings for secure fixation without suturing, allowing for various anastomotic configurations and accommodating different graft sizes and types, enabling multiple anastomoses without clamping and suturing, even in tissues with normal walls.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional anastomotic devices are used, then anastomosis can be performed, but clamping and suturing are required which increases procedure complexity and risk

Engineering Contradiction:

Improveanastomosis procedureVSAvoidclamping and suturing requirements

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical clamping and suturing system with a self-expanding metallic framework that uses elastic recovery to secure the graft. The expandable mesh structure mechanically interlocks with the graft material, eliminating the need for external clamps and sutures while maintaining secure attachment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The anastomotic device is designed to be self-securing through its self-expanding mechanism. Once deployed, the metallic framework automatically expands to lock onto the graft material without requiring additional clamping or suturing actions, making the system self-sufficient and simplifying the overall procedure.

Inventive Principle:

Principle #25Self-service

2Reliability

If conventional anastomotic devices are used, then anastomosis can be performed, but the risk of thrombosis and foreign body reactions increases

Engineering Contradiction:

Improveanastomosis successVSAvoidthrombosis and foreign body reactions

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the material parameters by using a metallic framework with specific elastic properties that allow controlled expansion and contraction. This metallic structure with optimized geometry and material composition reduces thrombogenicity and foreign body reactions compared to conventional polymer or composite materials, while maintaining mechanical strength and biocompatibility.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If conventional anastomotic devices are used, then single anastomosis can be performed, but multiple anastomoses require multiple devices increasing complexity

Engineering Contradiction:

Improveanastomosis throughputVSAvoidnumber of devices required

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent designs a universal anastomotic device with a modular metallic framework that can accommodate multiple grafts of different sizes and configurations. The expandable mesh structure can be adjusted to perform single, double, or triple anastomoses simultaneously, making one device capable of handling various surgical scenarios without requiring multiple specialized devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The device incorporates segmented or modular components that can be configured in different arrangements. The metallic framework can be divided into multiple expandable sections, each capable of securing individual grafts, allowing the same device to perform multiple anastomoses by simply adjusting the configuration of its segmented parts.

Inventive Principle:

Principle #1Segmentation

4Strength

If conventional anastomotic devices are used, then fixation is achieved, but suture requirements increase procedure time and complexity

Engineering Contradiction:

Improvefixation securityVSAvoidprocedure time

Core Design Contradiction:

StrengthVSLoss of time

Solution Approach 1:

The patent replaces the time-consuming suture-based fixation system with a rapid self-expanding metallic mechanism. The framework expands automatically upon deployment to create mechanical interlocking with the graft material, achieving secure fixation instantaneously without requiring needle and thread manipulation, thereby dramatically reducing procedure time while maintaining or improving fixation strength.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS8828030B2Insertable prosthesis and prosthesis board for anastomosis

Publication Date: 2014.09.09 GRANJA FILHO LUIZ GONZAGA

AI summary

Prosthetic devices are provided used for anastomosis of extremity with lateral, extremity with extremity and lateral with lateral without clamping and sutureless or with quick clamping sutureless, in which the graft is inserted in at least one of the intraluminal parts of the tubular member of the insertable prosthesis, the flanges including lateral inserts allowing the configuration of different prosthesis sets. The present invention also describes a board of prostheses including one flange with multiple holes through which intraluminal parts or occluders will be inserted, according to the need of the anastomosis to be carried out. The invention also includes prostheses in which the grafts cover only externally their extraluminal parts.