Breast Implant Surface Texture Capsular Contracture

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Solution Overview

Problem

Capsular contracture, a complication arising from the immune system's response to foreign breast implants, leads to hardened capsules that can cause discomfort and distortion, necessitating invasive surgical corrections, and there is a need for methods to reduce its occurrence and recurrence.

Innovation Solution

A method involving the introduction of a first prosthesis with a specific surface texture to form a capsule, followed by its removal and replacement with a second prosthesis having a different surface texture that stimulates tissue integration and remodeling of the pre-existing capsule, reducing its severity and likelihood of contraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a breast implant is implanted in a patient, then breast augmentation or reconstruction is achieved, but capsular contracture may occur causing hardening, pain, and distortion

Engineering Contradiction:
Improvebreast implant performanceVSAvoidcapsular contracture
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent employs porous textured surfaces on breast implants to reduce capsular contracture. The porous structure allows tissue ingrowth and integration, creating a more natural interface between the implant and surrounding tissue. This textured surface prevents the formation of a dense, contracted capsule by promoting healthy tissue adhesion and reducing the immune response that leads to capsular contracture.

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The patent changes the surface parameters of the implant by creating different texture patterns (macrotexturing, microtexturing) with specific pore sizes and distributions. These parameter changes in surface topology affect how tissue interacts with the implant, reducing the likelihood of capsular contracture while maintaining implant functionality.

Inventive Principle:
Principle #35Parameter changes

2Object-affected harmful factors

If capsular contracture has occurred, then a capsulectomy procedure is performed to remove the capsule, but this involves removal of healthy tissue and may require a new implant

Engineering Contradiction:
Improvecapsular contracture severityVSAvoidsurgical procedure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent applies preliminary anti-action by using textured surface implants that prevent capsular contracture from developing in the first place. The porous texture creates immediate tissue integration that counteracts the immune response before capsular contracture can occur, eliminating the need for future capsulectomy procedures.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The patent performs preliminary action by pre-texturing the implant surface before implantation. This pre-established porous structure is designed to promote tissue ingrowth and prevent capsular contracture formation, addressing the potential problem before it arises during the patient's treatment course.

Inventive Principle:
Principle #10Preliminary action

3Object-affected harmful factors

If the capsule is scored to release tension, then some relief is provided, but the capsule is not entirely removed and contracture may recur

Engineering Contradiction:
Improvecapsular tensionVSAvoidcontracture recurrence
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The textured surface implant performs preliminary anti-action by preventing the formation of a contractile capsule in the first place. The porous texture promotes tissue integration that maintains capsule flexibility and prevents the development of tension-causing contractures, eliminating the need for scoring procedures.

Inventive Principle:
Principle #9Preliminary anti-action

Data Source

PatentUS9468521B2Surgical methods for breast reconstruction or augmentation
Publication Date: 2016.10.18 ALLERGAN INC
  • US9468521B2 patent drawing
  • US9468521B2 patent drawing

AI summary

Methods for breast reconstruction and augmentation are provided which may reduce the incidence of capsular contracture. Methods for treating an encapsulated breast and reducing potential for capsular contracture in the breast are also provided.