Enhanced Multi-Channel RF Ablation System

Publication ID: 24-11857245_0006_PTD

Published: November 07, 2025

Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Multi-Channel RF Ablation System,” Published Technical Disclosure No. 24-11857245_0006_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857245_0006_PTD

This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,245.

Summary of the Inventive Concept

An improved multi-channel RF ablation system that minimizes intermodulation distortion and optimizes ablation efficiency by generating control signals with frequencies within a predetermined range of the ablation signal frequency and adjusting their amplitude based on the subject's physiological response.

Background and Problem Solved

The original patent (U.S. Pat. No. 9,005,193) describes a multi-channel RF ablation method and apparatus, but it has limitations in terms of intermodulation distortion and ablation efficiency. The present inventive concept addresses these limitations by introducing a novel approach to control signal generation and amplitude adjustment, ensuring more efficient and safer ablation procedures.

Detailed Description of the Inventive Concept

The enhanced multi-channel RF ablation system comprises a generator for producing multiple ablation signals and respective control signals. Each control signal has a frequency within a predetermined range of the ablation signal frequency, and the control signals are amplitude-modulated to reduce intermodulation distortion. The system also includes a control unit that monitors the subject's physiological response and adjusts the amplitude of the control signals accordingly. This approach enables more precise and efficient ablation, reducing the risk of complications and improving treatment outcomes.

Novelty and Inventive Step

The inventive concept's novelty lies in the generation of control signals with frequencies within a predetermined range of the ablation signal frequency, and the adjustment of their amplitude based on the subject's physiological response. This approach is non-obvious compared to the original patent, as it introduces a new method for minimizing intermodulation distortion and optimizing ablation efficiency.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include using different frequency ranges for the control signals, implementing additional feedback mechanisms to adjust the control signal amplitude, or incorporating machine learning algorithms to optimize ablation efficiency. Variations of the system could be designed for specific medical applications, such as cardiac ablation or cancer treatment.

Potential Commercial Applications and Market

The enhanced multi-channel RF ablation system has significant commercial potential in the medical device industry, particularly in the areas of cardiac ablation and cancer treatment. The system's ability to minimize intermodulation distortion and optimize ablation efficiency could lead to improved treatment outcomes, reduced complications, and increased market share for companies adopting this technology.

CPC Classifications

Section	Class	Group
A	A61	A61B18/1206
A	A61	A61B18/1492
A	A61	A61B2018/00351
A	A61	A61B2018/00577
A	A61	A61B2018/00702
A	A61	A61B2018/00732
A	A61	A61B2018/00767
A	A61	A61B2018/00791
A	A61	A61B2018/00827
A	A61	A61B2018/00875
A	A61	A61B2018/00892
A	A61	A61B2018/128
A	A61	A61B2018/1273

Section 103 Obviousness Analysis (PHOSITA)

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Field of Art

Medical device technology, specifically radiofrequency (RF) ablation systems for cardiac tissue treatment, requiring advanced electrical engineering, medical device design, and signal processing expertise

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer with advanced electrical engineering training, expertise in RF signal generation, medical device design, and knowledge of cardiac ablation techniques, holding at least a master's degree with 3-5 years of specialized experience

Obviousness Rationale

A PHOSITA would recognize that the PTD's approach of generating control signals with frequencies near the ablation signal frequency represents a predictable variation of the source patent's multi-channel ablation technique. The proposed modifications of amplitude modulation and physiological response-based signal adjustment are logical extensions of existing RF ablation technologies. These variations demonstrate standard engineering problem-solving approaches to minimizing signal interference and optimizing treatment precision.

Obvious Combinations & Variations

Source Patent Element

Generating multiple ablation signals with different frequencies

PTD Variation

Generating control signals with frequencies within a predetermined range of the ablation signal frequency

Obviousness Reasoning

A PHOSITA would recognize this as a standard signal engineering technique to manage potential interference and optimize signal characteristics, representing a predictable design optimization

Source Patent Element

Applying ablation signals to cardiac tissue using multiple channels

PTD Variation

Implementing a control unit that adjusts control signal amplitude based on physiological response

Obviousness Reasoning

Real-time physiological feedback is a known technique in medical device design, representing an obvious improvement for precise tissue treatment

Source Patent Element

Multi-channel RF ablation with modulated power signals

PTD Variation

Amplitude-modulating control signals to reduce intermodulation distortion

Obviousness Reasoning

Minimizing signal interference through amplitude modulation is a standard signal processing technique that would be obvious to a skilled engineer seeking to improve RF ablation performance

Source Patent Element

Generating composite signals for application to a subject

PTD Variation

Using machine learning algorithms to optimize ablation signal characteristics

Obviousness Reasoning

Applying computational optimization techniques to medical signal generation represents a predictable evolution of existing signal processing methodologies

Source Patent Element

Applying ablation signals using multiple electrodes

PTD Variation

Configuring electrodes with dynamically adjusted signal parameters based on real-time monitoring

Obviousness Reasoning

Adaptive electrode configuration is a logical extension of existing multi-channel ablation techniques, representing an obvious improvement in medical device design

35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857245 and the disclosed technical variations, a person of ordinary skill in the art would find the proposed multi-channel RF ablation system modifications obvious and predictable. The PTD demonstrates that the claimed innovations represent standard engineering problem-solving approaches that would be apparent to a skilled practitioner seeking to optimize RF ablation performance through signal modulation and adaptive monitoring techniques.

Original Patent Information

Patent Number	US 11,857,245
Title	Multi-channel RF ablation
Assignee(s)	Biosense Webster (Israel) Ltd.