Segmented Cranial Orthosis Shell for Growth Accommodation

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Solution Overview

Problem

Existing cranial remodeling orthoses face issues with frequent changes due to non-adaptive inner shell shapes, requiring multiple orthoses and increased material and specialist time, and adjustable fastening systems are limited in effectiveness and structurally demanding.

Innovation Solution

A cranial remodeling orthosis composed of multiple shell pieces with removable connections, allowing for adjustable inner cavities to accommodate head growth, ensuring firm fit and comfort throughout treatment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the inner wall of the shell is precisely adapted to the target shape of the head, then the cranial orthosis provides proper growth support and correction, but the orthosis does not fit firmly on the wearer's head, causing unwanted rotations and reduced treatment effectiveness

Engineering Contradiction:

Improvetreatment effectivenessVSAvoidfit stability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The shell is divided into multiple removable pieces (front piece, rear piece, and at least one intermediate piece) that can be independently adjusted. This segmentation allows the orthosis to maintain a firm fit through intermediate pieces while preserving the target shape correction function of the front and rear pieces.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The orthosis design allows dynamic adjustment of the inner cavity volume by replacing intermediate pieces during treatment. As the head grows, intermediate pieces are removed to increase the inner cavity volume, maintaining proper fit and treatment effectiveness throughout the growth process.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the shape of the inner cavity is adjusted to reduce gaps and improve fit, then the orthosis prevents unwanted rotations, but the head is no longer in contact with the inner wall in deformation areas, requiring frequent orthosis changes

Engineering Contradiction:

Improvefit stabilityVSAvoidtreatment time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #15Dynamics

3Reliability

If multiple cranial orthoses are produced to accommodate different intermediate growth stages, then proper growth support is maintained throughout treatment, but material consumption and production costs increase significantly

Engineering Contradiction:

Improvegrowth support accuracyVSAvoidmaterial consumption

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of discarding the entire orthosis when growth stages change, only the intermediate pieces are removed and discarded. The main front and rear pieces that provide target shape correction are retained and reused, significantly reducing material consumption.

Inventive Principle:

Principle #34Discarding and recovering

4Ease of operation

If the inner cavity volume is reduced to improve fit, then the orthosis sits firmly on the head, but the head cannot grow into the target shape

Engineering Contradiction:

Improvefit stabilityVSAvoidgrowth accommodation

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP4651843B1Assembly of a cranial remodeling orthosis

Publication Date: 2026.03.18 INVENT MEDICAL GRP SRO

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AI summary

The object of the invention is an assembly of a cranial remodeling orthosis and a method of designing and producing the same. The assembly of the cranial remodeling orthosis of the invention comprises a first front piece (1 ) of the shell and a first rear piece (3) of the shell adapted for mutual removable connection, wherein an inner wall (2) of the first front piece of the shell and an inner wall (4) of the first rear piece of the shell together define a target inner cavity (9) of the cranial orthosis, wherein the assembly further comprises a second rear piece (3) of the shell adapted for removable connection to the first front piece (1 ) of the shell, wherein the inner wall (4) of the second rear piece of the shell and the inner wall (2) of the first front piece together define a reduced inner cavity (1 1 ) of the cranial orthosis that has a smaller volume than the target inner cavity (9) of the cranial orthosis. The assembly of the cranial remodeling orthosis of the invention comprises the first front piece (1 ) of the shell and the first rear piece (3) of the shell adapted for mutual removable connection, wherein the inner wall (2) of the first front piece of the shell and the inner wall (4) of the first rear piece of the shell together define the target inner cavity (9) of the cranial orthosis, wherein the assembly further comprises the second front piece (1 ) of the shell adapted for removable connection to the first rear piece (3) of the shell, wherein the inner wall (2) of the second front piece of the shell and the inner wall (4) of the first rear piece together define the reduced inner cavity (11 ) of the cranial orthosis that has a smaller volume than the target inner cavity (9) of the cranial orthosis.