Implantation Alignment Tool for Solid Grafts

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Solution Overview

Problem

Current methods for implanting solid forms, such as osteochondral implants, face challenges due to the brittle nature of materials like coral-based implants, which can break during insertion, and lack an optimal tool system for precise orientation and secure attachment within tissue voids, leading to suboptimal implantation and potential damage to surrounding tissue.

Innovation Solution

An implantation alignment tool with a stabilization structure featuring alternating regions of varying diameters, designed to facilitate a snug fit within the implantation site, combined with a kit including a surgical cutter, reamer, and drill bit assembly to minimize tissue damage and ensure precise implant placement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual manipulation is used to create void, then flexibility is improved, but precision of void geometry and orientation deteriorates

Engineering Contradiction:

ImproveflexibilityVSAvoidprecision of void geometry and orientation

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent introduces a specialized implantation tool as an intermediary device between manual operation and the implantation process. This tool features a stabilization structure with alternating diameter regions that engage with the void to provide mechanical guidance and constraint, enabling precise orientation and geometry control while maintaining operational flexibility through the tool's design

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If drilling is used to create void, then precision of void geometry is improved, but tissue damage proximal to implantation site increases

Engineering Contradiction:

Improveprecision of void geometryVSAvoidtissue damage and heating

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent performs preliminary action by creating a pilot hole or channel first, then subsequently enlarging or refining the void using the implantation tool with stabilization structure. This staged approach allows precise geometry establishment without the excessive heat and damage associated with single-step drilling to final dimensions

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the traditional drilling mechanical system with a stabilization-based mechanical system. Instead of using rotating drill bits that generate heat, the tool uses a stabilization structure with alternating diameter regions that mechanically engage and define the void geometry through controlled insertion and engagement, reducing thermal and mechanical damage

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If tight fit insertion is used to prevent dislodgement, then implant stability is improved, but risk of implant breakage increases

Engineering Contradiction:

Improveimplant stabilityVSAvoidrisk of implant breakage

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The implantation tool serves as an intermediary that protects the fragile implant during insertion. The tool's stabilization structure engages with the implant and guides it into the void, distributing insertion forces and preventing direct contact between the implant and surrounding tissue that could cause breakage while still achieving tight fit and stability

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The tool design incorporates protective features that cushion and protect the implant before and during insertion. The stabilization structure with alternating diameter regions provides controlled engagement that gradually translates the implant into position, cushioning against sudden impacts or excessive forces that could cause breakage while ensuring final stable placement

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Manufacturing precision

If varying diameter stabilization structure is used, then precision of implantation orientation is improved, but device complexity increases

Engineering Contradiction:

Improveprecision of implantation orientationVSAvoidstructure complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies local quality by varying the diameter of the stabilization structure at specific locations along its length. The alternating diameter regions are strategically positioned to engage with corresponding features of the void or tissue, providing orientation control and stability at critical locations while keeping the overall device design relatively simple and manufacturable

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS10799251B2Tools and systems for solid form and graft implantation

Publication Date: 2020.10.13 CARTIHEAL 2009

AI summary

This invention provides tools and kits for removal of a graft and/or for implantation of a solid or semi-solid form or graft within an appropriate desired tissue minimizing the potential for or actual breakage of the implant or graft during the stated process. Kits comprising such tools and methods making use of same are provided, as well.