Subcutaneous Fat Reduction via Ischemia-Reperfusion Injury

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Solution Overview

Problem

Existing methods for reducing excess body fat, such as liposuction and non-invasive treatments, are either invasive, costly, or ineffective, especially in selective areas and for individuals with physical injuries or allergies.

Innovation Solution

The method involves using a cooling element to cool subcutaneous adipose tissue and then stimulating reperfusion by increasing blood flow to the cooled tissue, thereby causing ischemia-reperfusion injury that selectively reduces or eliminates fat cells.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If liposuction is used to remove subcutaneous fat, then fat removal effectiveness is improved, but invasiveness and risk increase

Engineering Contradiction:

Improvefat removal effectivenessVSAvoidinvasiveness and risk

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical suction system of liposuction with a thermal field-based system. A cooling element applies controlled cooling to subcutaneous adipose tissue, and an energy source (such as radiofrequency or laser) delivers thermal energy to induce ischemia-reperfusion injury, causing fat cell necrosis and elimination without mechanical intervention

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent converts the harmful effect of ischemia-reperfusion injury into a beneficial mechanism for fat cell destruction. By controlling blood flow restriction followed by reperfusion, the process selectively causes necrosis of adipose cells while sparring surrounding tissues, transforming a typically damaging physiological process into a selective destructive mechanism

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Object-affected harmful factors

If conventional non-invasive treatments (heat application) are used, then non-invasiveness is improved, but effectiveness in selective area fat reduction deteriorates

Engineering Contradiction:

Improvenon-invasivenessVSAvoidselective fat reduction effectiveness

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

The patent implements local quality by applying the cooling element and energy source specifically to targeted areas containing subcutaneous adipose tissue. The cooling element is positioned to cool lipid-rich cells selectively, and the energy source is applied locally to induce ischemia-reperfusion injury only in the treated region, achieving selective fat reduction without affecting other body areas

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent utilizes parameter changes by controlling temperature parameters through the cooling element to reach specific thermal thresholds that trigger ischemia-reperfusion injury in fat cells. The energy source adjusts thermal energy delivery to optimize the destructive effect on adipose cells while maintaining safety margins for surrounding tissues

Inventive Principle:

Principle #35Parameter changes

3Productivity

If cooling subcutaneous fat cells is applied, then selective fat cell targeting is improved, but potential damage to surrounding tissue increases

Engineering Contradiction:

Improveselective fat cell targetingVSAvoiddamage to surrounding tissue

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by first cooling the subcutaneous adipose tissue to establish the ischemic condition before applying the energy source. This sequential approach ensures that the tissue is prepared for selective ischemia-reperfusion injury, with the cooling element pre-positioned and activated before energy delivery begins

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses blood flow control as an intermediary mechanism between the cooling element and the final destructive effect. The cooling element induces vasoconstriction and ischemia, and the energy source modulates reperfusion, with blood flow serving as the mediating factor that enables selective injury to fat cells while protecting surrounding tissues

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

This approach effectively reduces subcutaneous fat cells while minimizing damage to non-lipid-rich cells, offering a potentially safer and more targeted alternative to existing treatments.

Implementation Method 1

exposing an epidermal layer in a region to a cooling element under conditions effective to cool subcutaneous adipose tissue in the region

Methodology Applied

Scientific EffectCooling: Cooling

Implementation Method 2

increasing the blood flow rate to the cooled tissue by exposing the tissue to an energy source

Methodology Applied

Scientific EffectIschemia-reperfusion injury:

Data Source

PatentUS20250120848A1Tissue treatment methods

Publication Date: 2025.04.17 ZELTIQ AESTHETICS INC

AI summary

Methods are provided herein for affecting a region of a subject's body, comprising exposing the region to a cooling element under conditions effective to cool subcutaneous adipose tissue in said region; and increasing the blood flow rate to the cooled tissue by exposing the tissue to an energy source. Methods are also provided for treating subcutaneous adipose tissue in a region of a subject's body, comprising exposing said region to a cooling element under conditions effective to cool said tissue; and exposing the tissue to an energy source to increase the blood flow rate to the cooled tissue, thereby stimulating reperfusion in, and/or causing an ischemia-reperfusion injury to, the cooled tissue.