A system and method for multi-channel RF energy delivery with coagulum reduction

一种能量传递、射频的技术，应用在手术器械的零部件、医药科学、手术等方向，能够解决系统不可操作等问题，达到风险最小化的效果

Inactive Publication Date: 2007-08-29
CARDIMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because control is centralized, the loss of a control card means the system becomes inoperable

Method used

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  • A system and method for multi-channel RF energy delivery with coagulum reduction
  • A system and method for multi-channel RF energy delivery with coagulum reduction
  • A system and method for multi-channel RF energy delivery with coagulum reduction

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Embodiment Construction

[0022] The methods and systems of the present invention employ a novel information processor and RF output controller 100 (also referred to herein as a multi-channel RF ablation interface) for regulating radio frequency (RF) energy from an RF generator 150 ( Also referred to herein as the RF energy source) is delivered to the cardiac tissue via electrical coupling to a series of ablation electrodes of an ablation device, which may be a catheter or a therapy probe. The information processor and RF output controller ensure that energy is delivered in an incremental manner during the initial ramp up to the ablation temperature set point, after which the energy delivery rate is feedback regulated to keep the cardiac tissue at the ablation site at the set point point temperature. Preferably, the temperature set point is user selectable. Preferably, energy delivery is also feedback regulated by other parameters (such as impedance, current and / or power delivered to the ablation cath...

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Abstract

A system and method for efficient delivery of radio frequency (RF) energy includes a backplane. At least a single channel card is removably coupled to the backplane for controlling the amount of RF power delivered through a single channel via an electrical coupling to at least one ablation electrode or a catheter. The at least one channel card provides a gradual increase in RF power calculated in real-time during an initial ramp-up phase, and to limit the delivery of RF power through the electrical coupling based on a received temperature of cardiac tissue in contact with the at least one ablation electrode, thereby reducing the likelihood coagulum formation.

Description

technical field [0001] The field of the invention relates to methods and devices for delivering energy to catheters or stylets. More specifically, the present invention relates to a modular and decentralized control system for delivering energy to a surgical probe of an ablation catheter. Background technique [0002] Radiofrequency energy can be used to ablate heart tissue to treat certain heart abnormalities, such as myofibrillar tremors. Radio frequency energy is delivered by the RF generator in two phases: (i) the "ramp phase", in which a relatively high amount of power is delivered to the ablation electrodes until the thermocouple or thermistor senses the desired and (ii) a "regulation" phase in which power is still delivered, but regulated to a lower level, to maintain the desired set temperature. The target temperature is predetermined by the operator, typically 50°C to 55°C for ablating cardiac tissue. [0003] Most RF generators have software modules that run con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/18A61B18/12A61B18/14
CPCA61B2018/1467A61B2018/00357A61B2018/00648A61B2018/00702A61B2018/00875A61B18/1492A61B2018/00791A61B2018/00678A61B2018/00827A61B2018/1253A61B2018/00892A61B2018/0016A61B18/1206A61B2018/00797
Inventor M·纳萨伯E·K·Y·占
Owner CARDIMA
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