Microwave Applicator Tissue Interface Module Vacuum

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Solution Overview

Problem

Current treatments for hyperhidrosis, such as medications and ablation therapy, are not entirely effective in providing a non-invasive and efficient solution for reducing excessive sweating, which can lead to physical and emotional side-effects.

Innovation Solution

A microwave-based tissue modification system with a tissue interface module that includes a bio-barrier, vacuum port, and a filter to prevent liquid passage, allowing for the application of microwave energy while maintaining a vacuum to treat excessive sweating by attaching a microwave antenna and cooling element to the skin.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a filter is added to prevent liquid passage between chambers, then liquid containment is improved, but device complexity increases

Engineering Contradiction:
Improveliquid containmentVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The filter is integrated within the tissue interface module structure, nested between the applicator chamber and tissue acquisition chamber. This nesting approach allows the filter to perform liquid containment while being part of the overall module architecture rather than a separate external component, thereby improving reliability without proportionally increasing device complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The filter utilizes porous material properties to achieve selective permeability - allowing air and vacuum to pass through while blocking liquid. This material-based solution provides effective liquid containment through the inherent properties of the porous structure itself, eliminating the need for additional mechanical barriers or complex sealing mechanisms.

Inventive Principle:
Principle #31Porous materials

2Ease of operation

If a variable flow restrictor is added to control air flow, then air flow control is improved, but device complexity increases

Engineering Contradiction:
Improveair flow controlVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The variable flow restrictor incorporates a flexible element that dynamically adjusts the flow opening size in response to pressure differences between chambers. This dynamic adjustment mechanism allows automatic air flow control based on operating conditions without requiring external actuators or complex control systems, thereby improving ease of operation while minimizing the increase in device complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The flow restrictor uses the pressure differential that naturally occurs during operation to drive the flexible element and adjust the flow opening. The system self-regulates air flow based on its own operating conditions without requiring external control inputs, providing automatic air flow management with minimal additional complexity.

Inventive Principle:
Principle #25Self-service

3Reliability

If an attachment mechanism is added to secure the tissue interface module, then connection reliability is improved, but ease of operation decreases

Engineering Contradiction:
Improveconnection reliabilityVSAvoidease of operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The attachment mechanism utilizes magnetic force to create a secure connection between the tissue interface module and the applicator. The magnetic attachment provides reliable connection through attractive force while allowing for relatively easy attachment and detachment through simple approach and separation movements, avoiding complex mechanical interlocking mechanisms.

Inventive Principle:
Principle #18Mechanical vibration

Solution Approach 2:

The magnetic attachment mechanism replaces traditional mechanical fastening systems (such as screws, clips, or latches) with a magnetic field-based attachment system. This substitution provides secure connection reliability through magnetic attraction while significantly improving ease of operation by eliminating complex mechanical manipulation requirements.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 system effectively reduces sweat by applying microwave energy through a bio-barrier and vacuum mechanism, providing a non-invasive treatment for hyperhidrosis with improved efficacy compared to existing methods.

Implementation Method 1

the filter comprising openings configured to permit air to pass and to prevent liquid from passing

Methodology Applied
Scientific EffectPermeation: Permeation

Implementation Method 2

drawing a vacuum from a vacuum source in the applicator through the applicator chamber

Methodology Applied
Scientific EffectVacuum: Vacuum

Implementation Method 3

applying microwave energy to the patient's tissue

Methodology Applied
Scientific EffectMicrowave Radiation: Microwave Radiation

Implementation Method 4

applying microwave energy through a bio-barrier and vacuum mechanism

Methodology Applied
Scientific EffectDielectric heating: Dielectric Heating

Implementation Method 5

a cooling element, and a vacuum port of the applicator

Methodology Applied
Scientific EffectCooling: Cooling

Data Source

PatentEP2739228B1Applicator and tissue interface module for dermatolgical device
Publication Date: 2017.08.23 MIRAMAR LABS INC
  • EP2739228B1 patent drawingFigure 1
  • EP2739228B1 patent drawingFigure 2
  • EP2739228B1 patent drawingFigure 3

AI summary

A dermatological energy applicator and tissue interface module are provided which may include any number of features. The dermatological energy applicator can be configured to apply microwave energy to tissue to treat conditions of the skin, including hyperhidrosis or excessive sweating. The energy applicator can further include a cooling element and vacuum ports. The tissue interface module can include an applicator chamber adapted to receive the energy applicator, and can further include a tissue acquisition chamber adapted to engage tissue, a bio-barrier configured to prevent passage of gas and liquid, and a filter disposed between the applicator chamber and the tissue acquisition chamber configured to prevent passage of gas but prevent passage of liquid.