Surgical Treatment Device Dual Coating Thermal Management

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Solution Overview

Problem

Existing surgical treatment devices face challenges in minimizing thermal invasiveness and durability, particularly due to heat conduction and cavitation issues during ultrasonic tissue treatment, which can lead to tissue damage and coating peeling.

Innovation Solution

A surgical treatment device featuring a heat insulation coating with hollow particles for reduced heat conduction and a protection coating with higher strength to cover the heat insulation coating, preventing heat transfer and fluid entry, while being positioned to avoid cavitation-prone areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a heat insulation coating is applied to the treatment portion, then thermal invasiveness is reduced and heat transfer to non-treatment surfaces is minimized, but the coating strength is insufficient leading to coating peeling

Engineering Contradiction:

Improvethermal invasivenessVSAvoidcoating strength

Core Design Contradiction:

Object-affected harmful factorsVSStrength

Solution Approach 1:

The coating is divided into two distinct segments: a heat insulation coating layer (first coating layer) applied to the treatment surface, and a protection coating layer (second coating layer) applied over the heat insulation coating. This segmentation allows each layer to specialize in its primary function while the combination resolves the strength deficiency of the heat insulation coating alone.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs a composite coating structure where two different coating materials are combined. The heat insulation coating provides thermal insulation properties, while the protection coating provides enhanced mechanical strength and adhesion. This composite approach allows the system to simultaneously achieve both heat insulation and coating durability.

Inventive Principle:

Principle #40Composite materials

2Productivity

If the treatment portion is positioned in cavitation-prone areas, then ultrasonic treatment effectiveness is improved, but coating peeling occurs due to cavitation damage

Engineering Contradiction:

Improveultrasonic treatment effectivenessVSAvoidcoating durability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The protection coating layer is applied beforehand to cushion and protect the heat insulation coating from cavitation damage. This protective layer absorbs the mechanical stress and damage from cavitation bubbles collapsing near the treatment surface, preventing the heat insulation coating from peeling off while allowing the treatment surface to remain in the cavitation-prone area for effective ultrasonic treatment.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Use of energy by moving object

If heat conduction is increased to improve treatment effectiveness, then energy transfer is enhanced, but thermal damage to surrounding tissue occurs

Engineering Contradiction:

Improveenergy transfer efficiencyVSAvoidthermal damage to surrounding tissue

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The coating structure provides localized thermal management: the treatment surface maintains high energy transfer efficiency for effective tissue treatment, while the heat insulation coating applied to other surfaces of the treatment portion provides thermal insulation to prevent heat conduction to surrounding tissues. This local quality differentiation allows simultaneous optimization of treatment effectiveness and thermal safety.

Inventive Principle:

Principle #3Local quality

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 device achieves reduced thermal invasiveness and enhanced durability by minimizing heat transfer to non-treatment surfaces and preventing coating peeling, ensuring effective and safe ultrasonic tissue treatment.

Implementation Method 1

a heat insulation coating that forms a part of an outer surface of the treatment portion and covers a part other than the treatment surface

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 2

A surgical treatment device featuring a heat insulation coating with hollow particles for reduced heat conduction

Methodology Applied

Scientific EffectHeat conduction reduction through hollow particles: Thermal Insulation

Implementation Method 3

This ultrasonic scalpel is vibrated at a high frequency (for example, 55,500 times per second) to denature protein in tissue

Methodology Applied

Scientific EffectUltrasonic vibration: Ultrasonic Vibration

Implementation Method 4

Methodology Applied

Scientific EffectCavitation protection: Cavitation

Data Source

PatentUS11253286B2Surgical treatment device

Publication Date: 2022.02.22 OLYMPUS CORPORATION(JP)

AI summary

A surgical treatment device includes: a treatment portion including a treatment surface that treats biological tissue by supplying at least one type of energy; a heat insulation coating that covers at least a part of an outer surface of the treatment portion; and a protection coating that is provided in a manner to cover the heat insulation coating and is higher in coating strength than the heat insulation coating.