US 2026/0224271 A1 · POWER ALLOCATION POLICIES FOR A MULTICHANNEL RADIOFREQUENCY ABLATION SYSTEM

Abstract

Systems and methods for intelligent power allocation in multichannel radiofrequency (RF) tissue ablation systems are described. The systems include a RF generator with limited power availability coupled to multiple RF probes forming separate channels. When total power demand exceeds generator capacity, the system implements power allocation policies to prevent therapy interruption. These policies include: prioritizing channels based on remaining treatment time, allocating power to channels with higher power demands, using impedance as a power demand predictor, and implementing power consumption thresholds. The controller determines power requirements for each channel and dynamically allocates available power according to the selected policy. This enables controlled treatment completion by intelligently managing limited power resources across multiple channels, avoiding unexpected therapy interruptions that could compromise surgical outcomes. The system can automatically pause, resume, or redistribute power delivery between channels based on real-time demands and priorities during the surgical procedure.

Claims20

Dependent claims

A tissue ablation system, comprising:

a radiofrequency generator having a power source and a controller operatively coupled to the power source and having a processor and a memory element,
a first radiofrequency probe having at least one electrode and electrically coupled to the radiofrequency generator to form a first channel, and
a second radiofrequency probe having at least one electrode and electrically coupled to the radiofrequency generator to form a second channel,
wherein the power source is configured to deliver radiofrequency power to the one or more electrodes of each of the first and second radiofrequency probes, the radiofrequency power being sufficient to provide controlled heating of tissue surrounding the one or more electrodes during a surgical procedure,
wherein the processor is configured to execute program instructions stored in the memory element such that, when executed:
cause the controller to determine a power demand required by each of the first channel and the second channel during the surgical procedure, and
when a total power demand required by the first and second radiofrequency probes via the first and second channels during the surgical procedure exceeds a total available power of the radiofrequency generator, cause the controller to allocate the radiofrequency power from the radiofrequency generator to one of the first and second channels.

4 more elements

A multichannel radiofrequency tissue ablation system, comprising

a radiofrequency generator having a power source and a controller operatively coupled to the power source and having a processor and a memory element,
a first radiofrequency probe having at least one electrode and is electrically coupled to the radiofrequency generator to form a first channel, and
a second radiofrequency probe having at least one electrode and is electrically coupled to the radiofrequency generator to form a second channel,
wherein the power source is configured to deliver radiofrequency power to the one or more electrodes of each of the first and second radiofrequency probes, the radiofrequency power being sufficient to provide controlled heating of tissue surrounding the one or more electrodes during a surgical procedure,
wherein the controller includes a power determination and allocation unit to determine a power demand required by each of the first channel and the second channel during the surgical procedure, and when a total power demand required by the first and second radiofrequency probes via the first and second channels during the surgical procedure exceeds a total available power of the radiofrequency generator, the power determination and allocation unit allocates the radiofrequency power from the radiofrequency generator to one of the first and second channels.

2 more elements

A computer-implemented method of allocating power delivery in a tissue ablation system, the system comprising:

a radiofrequency generator having a power source and a controller operatively coupled to the power source and having a processor and a memory element, a first radiofrequency probe having at least one electrode and electrically coupled to the radiofrequency generator to form a first channel, and a second radiofrequency probe having at least one electrode and electrically coupled to the radiofrequency generator to form a second channel, the power source configured to deliver radiofrequency power to the one or more electrodes of each of the first and second radiofrequency probes, the radiofrequency power being sufficient to provide controlled heating of tissue surrounding the one or more electrodes during a surgical procedure, the method comprising executing via the processor program instructions stored in the memory element to:
cause the controller to determine a power demand required by each of the first channel and the second channel during the surgical procedure, and
when a total power demand required by the first and second radiofrequency probes via the first and second channels during the surgical procedure exceeds a total available power of the radiofrequency generator, cause the controller to allocate the radiofrequency power from the radiofrequency generator to one of the first and second channels.

Dependencies are inferred from the claim text.

Power allocation policies for a multichannel radiofrequency ablation system

Life of this patent

Power allocation policies for a multichannel radiofrequency ablation system

Life of this patent

Abstract

Claims20