Breast Implant Testing via Load Frame Geometry
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for testing breast implants are complex, time-intensive, and fail to accurately simulate in vivo conditions, making it difficult to assess the geometric and engineering mechanical properties, which are crucial for safety and durability, and clinical outcomes such as capsular contracture and implant rupture.
Innovation Solution
A simplified method using load-displacement data from a load frame apparatus, assuming a quasi-equilibrium state to determine breast implant geometry and engineering mechanical properties, eliminating the need for stepwise load application and manual measurements, and allowing for quick assessment of various design parameters like filler material, shell thickness, and shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex finite element or finite difference modeling is used to evaluate stress and strain properties of breast implants, then measurement precision is improved, but device complexity and time consumption increase significantly
Solution Approach 1:
The patent extracts only the essential load-displacement data from the complex finite element modeling process, eliminating the need for full-scale complex simulations while retaining the critical information needed to evaluate stress and strain properties. This extraction approach maintains measurement precision for key parameters while dramatically reducing computational complexity and time requirements.
Solution Approach 2:
The patent creates a simplified computational model that copies the essential mechanical behavior of breast implants without replicating the full complexity of finite element models. By using a simplified geometric model with key parameters (initial volume, shell thickness, contact area) that mirrors the load-displacement relationship, the system achieves adequate measurement precision for safety and durability assessment with much lower computational overhead.
2Measurement precision
If stepwise load application with manual measurements is used to determine breast implant geometry, then measurement precision is improved, but productivity decreases due to time-intensive procedures
Solution Approach 1:
The patent replaces manual mechanical measurement procedures with an automated computational approach. Instead of physically measuring implant geometry at each load step, the system uses a simplified model that calculates geometry parameters (contact area, volume, shell thickness) automatically from load-displacement data, maintaining precision while eliminating time-consuming manual operations.
Solution Approach 2:
The patent performs preliminary characterization of the breast implant by determining key geometric parameters (initial volume, shell thickness, contact area) before the main testing sequence. This preliminary action allows the simplified model to rapidly compute geometry during loading without requiring time-intensive measurements at each step, thereby improving productivity while maintaining adequate precision.
3Reliability
If conventional mechanical testing methods are used to simulate in vivo conditions, then reliability of safety assessment is improved, but device complexity and difficulty of implementation increase
Solution Approach 1:
The patent changes the key parameters used in testing from complex multi-dimensional geometric measurements to simplified parameters (load, displacement, contact area, initial volume, shell thickness) that can be obtained through straightforward measurement and calculation. This parameter transformation maintains the reliability of safety and durability assessment by focusing on the critical mechanical properties while dramatically reducing the complexity of the testing methodology.
4Reliability
If comprehensive geometric and mechanical property evaluation is performed using traditional methods, then reliability of clinical outcome prediction is improved, but loss of time increases due to complex procedures
Solution Approach 1:
The patent extracts the essential mechanical properties needed for clinical outcome prediction (stress, strain, modulus, ultimate strength) from the complex traditional testing framework. By focusing on these key extracted parameters and calculating them from simplified load-displacement data using the proposed model, the system maintains reliability in predicting clinical outcomes such as capsular contracture and implant rupture while significantly reducing the time required for comprehensive evaluation.
Data Source
AI summary
This invention provides a method for determining breast implant geometric properties, engineering stresses, engineering strains and engineering moduli; directly and quickly, using a load frame apparatus. More generally the invention provides a method for determining geometric properties and engineering mechanical properties of any elastomeric device, using a load frame apparatus. Engineering stress and engineering strain properties of breast implants are critical to their safety and durability. The geometric properties of breast implants undergoing compression also relates to the shape stability of breast implants, which may also be related to clinical outcomes such as capsular contracture and other untoward outcomes involving a breast capsule, such as Anaplastic Large Cell Lymphoma (ALCL), double capsule formation, seroma formation and associated breast implant illness (BII).