Electrosurgical Controller with Integrated Fluid Pump

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Solution Overview

Problem

Existing electrosurgical systems are limited in functionality and often require multiple devices to treat varying tissue types effectively, leading to suboptimal results and increased procedural complexity.

Innovation Solution

An electrosurgical system with a single wand and controller that implements multiple modes of operation, including low, medium, high, and vacuum modes, by controlling the flow of fluid and RF energy to achieve specific tissue treatments using Coblation technology and a peristaltic pump for aspiration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple electrosurgical wands and controllers are used to treat different tissue types, then treatment effectiveness is improved, but device complexity and procedural cost increase

Engineering Contradiction:

Improvetreatment effectivenessVSAvoidnumber of instruments

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The electrosurgical wand is designed with a single active electrode and integrated fluid delivery system that can perform multiple tissue treatments (ablation, coagulation, cutting) by varying operational parameters such as RF energy levels and fluid flow rates, eliminating the need for multiple specialized instruments

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system achieves different tissue treatment modes by dynamically adjusting operational parameters including RF power output, fluid delivery rate, and aspiration flow, allowing a single wand to adapt to various tissue types and treatment requirements without physical modification

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If a single electrosurgical wand is used for multiple tissue types, then device complexity is reduced, but treatment effectiveness deteriorates

Engineering Contradiction:

Improvenumber of instrumentsVSAvoidtreatment effectiveness

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The controller monitors operational parameters and tissue response in real-time, automatically adjusting RF energy delivery and fluid flow rates to optimize treatment effectiveness for different tissue types, ensuring reliable results across varied applications

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system employs dynamic control of operational parameters during the procedure, allowing real-time adaptation to different tissue characteristics and treatment requirements, thereby maintaining high treatment effectiveness with a single versatile wand

Inventive Principle:

Principle #15Dynamics

3Reliability

If RF energy is increased to treat tougher tissue, then treatment effectiveness is improved, but heat generation and tissue damage increase

Engineering Contradiction:

Improvetreatment effectivenessVSAvoidheat generation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A conductive fluid is delivered to the treatment site as an intermediary medium that facilitates RF energy transfer and promotes controlled plasma formation, enabling effective treatment of tough tissues while distributing and controlling heat generation to prevent excessive thermal damage

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system utilizes phase transition of the conductive fluid to plasma state under RF energy, where the plasma acts as an intermediate energy transfer medium that ablates tissue through ionization and radical reactions rather than direct thermal conduction, reducing unwanted heat spread

Inventive Principle:

Principle #36Phase transitions

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

Enables efficient and effective treatment of different tissue types with reduced need for multiple instruments, improving clinical outcomes and procedural efficiency by stabilizing the plasma field and optimizing energy dissipation.

Implementation Method 1

a peristaltic pump for aspiration

Methodology Applied

Scientific EffectPeristalsis: Peristalsis

Implementation Method 2

stabilizing the plasma field

Methodology Applied

Scientific EffectPlasma: Plasma

Implementation Method 3

achieve specific tissue treatments using Coblation technology

Methodology Applied

Scientific EffectCoblation:

Implementation Method 4

optimizing energy dissipation

Methodology Applied

Scientific EffectEnergy dissipation:

Data Source

PatentUS11529182B2Electrosurgical systems and methods

Publication Date: 2022.12.20 ARTHROCARE CORP

AI summary

System and methods of an electrosurgical controller having multiple modes of operation that are configured for treatment of a specific targeted tissue type and the electrosurgical effect desired where the treatment and effect are provided by a single controller and an electrosurgical probe. The electrosurgical controller includes an integrated fluid control apparatus or pump where activation of the controller allows for selective energy delivery and corresponding fluid volume flow rates. The electrosurgical probe includes a fluid transport lumen and is in communication with the controller and the pump for operation of the probe in the various user selected modes with accompanying energy delivery and fluid control directed to the desired treatment and surgical effect.