Microwave Providing Device Intermittent Radiation Coagulation Range

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing microwave surgical devices face challenges in extending the coagulation range of treatment target tissues due to moisture depletion and spark discharge, as continuous microwave radiation leads to carbonization, and intermittently providing microwaves without specified conditions fails to effectively enhance the coagulation range.

Innovation Solution

A microwave providing device that intermittently radiates microwaves after a reference cumulative radiation period, where the first efficiency of dielectric heating exceeds the second efficiency, using a microwave generator and output controller to set optimal radiation and pause periods, ensuring effective dielectric heating and preventing moisture depletion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If microwaves are continuously radiated to treatment target tissue, then dielectric heating efficiency is maintained, but moisture becomes insufficient causing spark discharge and carbonization

Engineering Contradiction:

Improvedielectric heating efficiencyVSAvoidmoisture content in tissue

Core Design Contradiction:

Use of energy by moving objectVSLoss of substance

Solution Approach 1:

The patent applies periodic action by intermittently radiating microwaves to the treatment target tissue. The microwave radiation is performed in repeated cycles with each cycle including a radiation period and a pause period. This periodic action allows moisture to be replenished during pause periods while maintaining dielectric heating efficiency during radiation periods, preventing the moisture depletion that occurs with continuous radiation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent implements preliminary action by performing a preliminary dielectric heating treatment with continuous microwave radiation before switching to intermittent radiation. This preliminary treatment phase prepares the tissue for subsequent intermittent radiation, allowing the system to establish initial heating while preventing carbonization by transitioning to the intermittent mode before severe moisture depletion occurs.

Inventive Principle:

Principle #10Preliminary action

2Loss of substance

If microwaves are intermittently provided without specified conditions, then moisture depletion is suppressed, but coagulation range cannot be effectively extended

Engineering Contradiction:

Improvemoisture depletion suppressionVSAvoidcoagulation range extension efficiency

Core Design Contradiction:

Loss of substanceVSProductivity

Solution Approach 1:

The patent applies parameter changes by optimizing specific parameters of intermittent microwave radiation: the radiation period is set to 10 seconds and the pause period to 5 seconds, with repeated cycles. These specific parameter values were determined to maximize coagulation range extension while preventing moisture depletion. The patent also implements parameter changes by performing preliminary continuous radiation treatment before transitioning to intermittent radiation with these optimized parameters.

Inventive Principle:

Principle #35Parameter changes

3Use of energy by moving object

If cumulative radiation period exceeds specific period, then first efficiency of dielectric heating exceeds second efficiency, but continuous radiation causes carbonization

Engineering Contradiction:

Improvedielectric heating efficiencyVSAvoidtissue carbonization

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent resolves this contradiction by implementing periodic action through intermittent microwave radiation. By alternating between radiation periods and pause periods, the system maintains dielectric heating efficiency while allowing moisture replenishment during pauses, thereby preventing carbonization that would occur with continuous radiation exceeding the critical cumulative period.

Inventive Principle:

Principle #19Periodic action

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 extends the coagulation range by maintaining higher dielectric heating efficiency and preventing tissue carbonization, allowing for broader and more efficient coagulation of treatment target tissues without the need for additional cooling structures or dissociation currents.

Implementation Method 1

thermal energy generated by dielectric heating of microwaves

Methodology Applied

Scientific EffectDielectric heating: Dielectric Heating

Data Source

PatentUS10058386B2Microwave providing device and microwave surgical device provided with same

Publication Date: 2018.08.28 ALFRESA PHARMA CORP

AI summary

A microwave providing device is provided, which is capable of effectively extending the coagulation range of a treatment target tissue by setting the conditions for intermittently providing microwaves. An output controller controls a microwave generator based on a first efficiency of dielectric heating by microwaves with respect to a cumulative radiation period of microwaves radiated intermittently to a treatment target tissue S and a second efficiency of dielectric heating by microwaves with respect to a cumulative radiation period of microwaves radiated continuously to the treatment target tissue so that microwaves are intermittently radiated at least after a reference cumulative radiation period that is set in advance as a cumulative radiation period at which the first efficiency becomes larger than the second efficiency.