3D Osteotomy Demonstration Model With Removable Bone Blocks

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Solution Overview

Problem

Existing surgical demonstration models using human and animal cadavers are costly and pose biohazard waste issues, and their chemical preservation alters tissue properties, limiting their effectiveness.

Innovation Solution

A three-dimensional transforming demonstration model that illustrates osteotomy surgical procedures, specifically addressing patellar luxation in dogs, using 3D printed components to simulate bone geometry changes before and after surgery, including adjustable elements like patellar grooves and tibial tuberosities to demonstrate corrective surgical procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If cadaver specimens are used to demonstrate surgical procedures, then anatomical accuracy is improved, but cost and biohazard waste issues worsen

Engineering Contradiction:
Improveanatomical accuracyVSAvoidcost
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent creates 3D printed anatomical models that are precise copies of bone structures, allowing surgical procedures to be demonstrated without using actual cadavers. These digital copies can be manufactured at lower cost and without biohazard concerns while maintaining the necessary anatomical accuracy for educational purposes.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The 3D printed anatomical models serve as inexpensive, disposable educational tools that can be produced at a fraction of the cost of cadaver specimens. These models are designed for single-use or limited-use in educational settings, eliminating the need for expensive preservation and disposal infrastructure.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Measurement precision

If cadaver specimens are used to demonstrate surgical procedures, then anatomical accuracy is improved, but biohazard waste issues worsen

Engineering Contradiction:
Improveanatomical accuracyVSAvoidbiohazard waste
Core Design Contradiction:
Measurement precisionVSObject-generated harmful factors

Solution Approach 1:

By creating digital 3D copies of anatomical structures through scanning and printing technologies, the patent eliminates the need to handle and dispose of actual biological waste. The digital models can be replicated indefinitely without generating biohazardous material.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent replaces the physical handling and disposal of cadaver specimens with digital modeling and printing processes. This substitution of mechanical/biological systems with digital/manufacturing systems eliminates biohazard waste generation entirely.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Stability of the object's composition

If chemical preservation is used on cadaver tissues, then tissue stability is improved, but physical properties of tissues worsen

Engineering Contradiction:
Improvetissue stabilityVSAvoidphysical properties
Core Design Contradiction:
Stability of the object's compositionVSStrength

Solution Approach 1:

Instead of preserving actual tissues with chemicals that alter their properties, the patent creates digital 3D models that accurately represent the anatomical geometry without chemical modification. The physical 3D printed models replicate the appearance and basic structural properties without the distorting effects of preservation chemicals.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent changes the state of the anatomical representation from real biological tissue (requiring chemical preservation) to digital data and synthetic 3D printed material. This parameter change from biological to digital/synthetic state eliminates the need for chemical preservation while maintaining anatomical accuracy.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12482379B2Demonstration model for osteotomy surgical procedures
Publication Date: 2025.11.25 APODEIXIS LLC
  • US12482379B2 patent drawing
  • US12482379B2 patent drawing
  • US12482379B2 patent drawing

AI summary

A three-dimensional model for demonstrating an osteotomy surgical procedure is provided. The three-dimensional model includes a support, a first bone coupled to the support, and a second bone coupled to the support. The first bone includes a body defining a recess including a surface having an embedded magnet, a removable intermediate bone block disposed within the recess, and a removable surface bone block, disposed within the recess, including at least one embedded magnet. The removable intermediate bone block and the removable surface bone block are associated with the osteotomy surgical procedure.