Augment Implant Porous Body Non-Porous Frame Strength

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Solution Overview

Problem

Conventional porous augment implants have low mechanical strength, leading to damage from external forces, and issues with bone ingrowth and cement leakage, while 3D printing supports complicate manufacturing and increase waste.

Innovation Solution

Combining a porous body part with a non-porous frame part to enhance mechanical strength, allowing multidirectional insertion and bone growth, and using 3D printing to integrate the frame part with the support for easy removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the augment implant is formed with only a porous material having multiple pores, then bone ingrowth is promoted, but the mechanical strength of the augment implant is decreased

Engineering Contradiction:

Improvebone ingrowthVSAvoidmechanical strength

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent combines porous biomaterial (for bone ingrowth) with metallic frame structure (for mechanical strength) to create a composite augment implant. The porous body part is integrated with a metallic frame to form a hybrid structure that simultaneously provides bone ingrowth capability and mechanical strength, resolving the contradiction between porosity and strength.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The augment implant is divided into two functional segments: a porous body part (for bone ingrowth) and a metallic frame structure (for mechanical strength). This segmentation allows each part to independently fulfill its specific function while working together as an integrated system, enabling both bone ingrowth and mechanical strength.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the porous augment implant is damaged by external forces, then mechanical strength is insufficient, but porous particles may be generated causing inflammatory reactions

Engineering Contradiction:

Improvebone ingrowthVSAvoidinflammatory reactions from porous particles

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The metallic frame structure serves as a protective reinforcement within the porous augment implant. This composite structure prevents the porous body part from being damaged by external forces, thereby preventing generation of harmful porous particles that could cause inflammatory reactions, while maintaining the bone ingrowth function.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The metallic frame structure is incorporated in advance to provide mechanical protection and cushioning to the porous body part before implantation. This pre-established protective structure prevents damage during service, avoiding the generation of harmful particles that could cause inflammatory reactions.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Ease of manufacture

If the augment implant is manufactured by 3D printing, then complex shapes can be created, but support removal may damage the porous structure

Engineering Contradiction:

Improve3D printing capabilityVSAvoidporous structure integrity

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The metallic frame structure serves as a structural reinforcement that protects the porous body part during the support removal process. The frame's mechanical strength prevents collapse or deformation of the porous structure when supports are removed, ensuring manufacturing precision is maintained while enabling complex 3D printed shapes.

Inventive Principle:

Principle #40Composite materials

4Strength

If the frame part area is increased, then mechanical strength is improved, but bone ingrowth area is reduced

Engineering Contradiction:

Improvemechanical strengthVSAvoidbone ingrowth

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The metallic frame structure is strategically positioned at specific locations where mechanical strength is most needed, rather than uniformly distributing material throughout. This localized reinforcement provides necessary strength while minimizing the frame's overall area, thereby preserving maximum surface area for bone ingrowth.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The implant is segmented into a porous body part (for bone ingrowth) and a metallic frame structure (for mechanical strength). This segmentation allows the frame to be minimized to only the necessary structural requirements, maximizing the porous area available for bone ingrowth while maintaining adequate mechanical strength.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20230310160A1Augment implant

Publication Date: 2023.10.05 CORENTEC

AI summary

Proposed is an augment implant and, more specifically, is an augment implant, in which a body part of the porous structure is combined with a frame part of a non-porous structure to increase the mechanical strength of the body part and to prevent damage to the body part due to external forces, bone ingrowth is maximized by minimizing the area of the frame part, the augment implant can be inserted in various directions, not just in a specific direction, and when the augment implant is manufactured by 3D printing, a support is connected to the frame part so that in a process of removing the support, the support can be easily removed without damage to the porous structure.