Patient-Specific Hip Implant Platform for Femoral Fit and Longevity

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Solution Overview

Problem

Existing hip replacement surgeries rely heavily on the surgeon's knowledge and experience, leading to variability in implant design and potential failures due to inadequate customization to individual patient anatomy, which affects the success and longevity of the implant.

Innovation Solution

A computer-aided method and digital implant design platform that uses CT scans to generate a customized 3D model of the femur, optimizing the implant's design based on the patient's bone topology, and generates surgical tools like broaching and osteotomy guides for precise implantation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a standard implant design is used based on surgeon's knowledge and experience, then the surgical procedure is simple and quick, but the implant fit and longevity are compromised due to lack of customization to individual patient anatomy

Engineering Contradiction:

Improveimplant longevityVSAvoidimplant design process

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by generating a 3D digital model of the patient's femur bone from CT scan data before the actual implantation surgery. This pre-operative digital modeling allows the implant design to be customized to the patient's specific anatomy in advance, ensuring better fit and longevity without adding complexity to the surgical procedure itself.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system creates a digital copy (3D model) of the patient's actual femur bone structure from CT scan data. This digital replica is then used to design and optimize the implant geometry to perfectly match the patient's unique anatomy, eliminating the need for complex manual measurements and planning during surgery.

Inventive Principle:

Principle #26Copying

2Reliability

If a custom-made implant is designed according to patient's femur bone anatomy, then the implant longevity and success rate are improved, but the design process becomes more time-consuming and expensive

Engineering Contradiction:

Improveimplant success rateVSAvoidimplant design time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system replaces manual mechanical measurement and design processes with automated computer-based image processing and algorithmic design. CT scan data is automatically processed to generate the 3D bone model, and the implant geometry is automatically optimized based on this model, dramatically reducing the time required for custom implant design while maintaining high success rates.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system automatically adjusts implant geometric parameters (dimensions, shape, orientation) based on the extracted bone anatomy parameters from the CT scan. This parametric design approach allows the implant to be rapidly customized to match the patient's specific anatomy without requiring time-consuming manual redesign for each parameter.

Inventive Principle:

Principle #35Parameter changes

3Strength

If the implant geometry is precisely adapted to the medullary canal, then the mechanical performance and osseointegration are optimized, but the manufacturing complexity increases

Engineering Contradiction:

Improvemechanical performanceVSAvoidimplant fabrication

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The system applies local quality by adapting specific regions of the implant geometry to match corresponding regions of the medullary canal. Different segments of the implant stem can have different geometric characteristics optimized for their specific locations within the bone, ensuring optimal mechanical performance and osseointegration at each level while maintaining manufacturability through systematic design rules.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system creates a universal design framework that can accommodate variations in patient anatomy through parametric modeling. The same basic design methodology and manufacturing process can be applied to all patients, with the specific geometric parameters automatically adjusted based on individual CT scan data, maintaining ease of manufacture while achieving precise anatomical fit.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260007520A1A method for designing an artificial joint implant and corresponding broaching and osteotomy guide apparatuses and a digital implant platform thereof

Publication Date: 2026.01.08 3 PSI LTD

AI summary

The present invention relates to a method for interactively designing via an implant design platform an artificial joint implant for hip arthroplasty and corresponding broaching and osteotomy guide apparatuses. The proposed implant design platform reconstructs the anatomy of the patient's pelvic and femoral bones in a 3D digital environment, and accordingly develops a patient-specific femoral implant stem as well as patient-specific surgical tools broach/rasp, osteotomy guide) used in total 10 hip arthroplasty. The patient-specific femoral implant stem developed may be optimized to ensure optimum mechanical performance for the patient, employing complex internal lattices that minimize stress shielding and advanced trabecular surfaces to promote osseointegration.