Adipose Hydrogel Composite for Soft Tissue Replacement

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Solution Overview

Problem

Current soft tissue replacement methods face challenges with artificial fillers due to lack of metabolic activity, migration, and temporary effects, while transplanted tissue methods suffer from tissue volume loss and poor survival rates due to inadequate blood supply.

Innovation Solution

A composition comprising adipose tissue, a hydrogel material, and specific compounds that promote new blood vessel formation, such as FGF-2 and VEGF, to enhance the survival and integration of transplanted tissue.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If artificial or alloplastic fillers are used for soft tissue replacement, then the tissue provides structural support and maintains appearance, but the material lacks metabolic activity, does not become physiologically incorporated, and risks migration and extrusion

Engineering Contradiction:

Improvestructural supportVSAvoidphysiological incorporation

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The patent uses composite materials by combining adipose tissue (biological component) with a hydrogel matrix (synthetic component). The hydrogel serves as a scaffold that provides structural support while the adipose tissue within it provides metabolic activity and physiological incorporation. This composite structure allows the implant to both maintain appearance and become integrated into surrounding tissue, resolving the contradiction between structural support and physiological incorporation.

Inventive Principle:

Principle #40Composite materials

2Illumination intensity

If artificial fillers are used for soft tissue replacement, then temporary cosmetic effects are achieved, but the body rapidly reabsorbs them resulting in temporary effects only

Engineering Contradiction:

Improvecosmetic appearanceVSAvoidlong-term persistence

Core Design Contradiction:

Illumination intensityVSDuration of action of stationary object

Solution Approach 1:

The adipose tissue within the hydrogel matrix is viable and metabolically active, capable of self-sustenance through neovascularization. The tissue can recruit its own blood supply through angiogenic factors, allowing it to survive long-term without external intervention. This self-service capability enables the cosmetic effect to persist indefinitely rather than being rapidly reabsorbed, resolving the contradiction between cosmetic appearance and long-term persistence.

Inventive Principle:

Principle #25Self-service

3Duration of action of stationary object

If long-term fillers are used for soft tissue replacement, then prolonged cosmetic effects are achieved, but a foreign body response results in formation of an avascular, fibrous capsule around the filler

Engineering Contradiction:

Improvelong-term persistenceVSAvoidforeign body response

Core Design Contradiction:

Duration of action of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The patent changes the fundamental parameter of the implant material from non-biological (artificial filler) to biological (adipose tissue). This parameter change transforms the immune response from foreign body rejection to acceptance of autologous tissue. The adipose tissue, being the patient's own tissue, does not trigger a foreign body response, allowing long-term persistence without capsular contraction, resolving the contradiction between long-term persistence and foreign body response.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If transplanted tissue is used for soft tissue replacement, then avoidance of artificial filler problems is achieved, but loss of transplanted tissue volume over time occurs due to resorption and poor survival

Engineering Contradiction:

Improveavoidance of artificial filler problemsVSAvoidtissue volume loss

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The hydrogel matrix is pre-loaded with angiogenic factors and the adipose tissue is prepared before transplantation. The hydrogel provides a pre-formed scaffold that guides tissue organization and vascular ingrowth from the surrounding host tissue. This preliminary preparation of the transplant material with pro-angiogenic properties enables better survival and reduces volume loss by ensuring adequate blood supply is established before the tissue can be fully reabsorbed, resolving the contradiction between avoiding artificial filler problems and preventing tissue volume loss.

Inventive Principle:

Principle #10Preliminary action

5Adaptability or versatility

If transplanted tissue is used for soft tissue replacement, then natural tissue properties are achieved, but inadequate blood supply results in necrosis and apoptosis of the transplanted tissue

Engineering Contradiction:

Improvenatural tissue propertiesVSAvoidblood supply adequacy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The hydrogel matrix acts as an intermediary between the transplanted adipose tissue and the host tissue. It provides a scaffold that facilitates vascular ingrowth from the host tissue into the transplant. The hydrogel's porous structure and incorporation of angiogenic factors mediate the formation of new blood vessels, ensuring adequate blood supply reaches the transplanted tissue. This intermediary function resolves the contradiction between achieving natural tissue properties and ensuring blood supply adequacy.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution improves the survival rate of transplanted tissue by establishing an adequate blood supply, reducing tissue volume loss, and facilitating long-term integration and remodeling, thus addressing the limitations of both artificial and transplanted tissue methods.

Implementation Method 1

The growth of new blood vessels and associated vasculature or repair or remodeling of existing blood vessels and associated vasculature provides collateral circulation in and around an ischemic area, improves blood flow

Methodology Applied

Scientific EffectAngiogenesis: