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Impedance controlled tissue ablation apparatus and method

一种仪器、组织的技术，应用在阻抗控制的组织切除仪器和方法领域，能够解决没有提供解决方法等问题

Inactive Publication Date: 2005-03-16
PULSE POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current excisional therapies do not take these issues into account nor provide a way to address them

Method used

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  • Impedance controlled tissue ablation apparatus and method
  • Impedance controlled tissue ablation apparatus and method
  • Impedance controlled tissue ablation apparatus and method

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Embodiment Construction

[0050] definition

[0051] Unless otherwise indicated, the following terms (as used herein) have the following meanings:

[0052] "Electrode", "resilient element" and "antenna" are interchangeable and refer to needles or wires used to conduct energy to a tissue site. Electrodes can be passive, active or interchangeable between the two. Additionally, the electrodes may be ground pad electrodes that can be placed on the patient's body.

[0053] By "sensing element" is meant a passive or active electrode used to detect an ablation parameter.

[0054] "Fluid delivery device" and "infusion device" are interchangeable and mean a device that is connected to or includes (i) a container containing a liquid to be injected and (ii) one or more electrodes or an elongated delivery device, Used to infuse fluid into target tissue.

[0055] "Feedback control device", "control unit", "control source", "feedback control system" and "controller" are interchangeable and refer to a controller ...

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PUM

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Abstract

A method and apparatus for carrying our thermal ablation of target tissue is disclosed. The apparatus includes an RF ablation device having a multi-electrode electrode assembly designed to be deployed in target tissue, defining a selected-volume tissue region to be ablated, and having infusion channels for infusing a liquid into the target tissue during the ablation process. A control unit in the apparatus is operably connected to an RF energy source, for controlling the RF power level supplied to the electrodes, and to an infusion device, for controlling the rate of infusion of a liquid through the device into the tissue. During both electrode deployment and tissue ablation, impedance and or temperature measurements made within the tissue are used to control the RF source and infusion device, for optimizing the time and extent of tissue ablation.

Description

technical field [0001] The present invention generally relates to a method of treating tissue with minimal trauma. In particular, the present invention relates to an apparatus and method for treating tumors and diseased tissues by excision. More particularly, the present invention relates to an apparatus and method for treating tumors and diseased tissue by ablation, which uses impedance values ​​to control and optimize the distribution of electromagnetic ablation energy to target tissue sites. Background technique [0002] Various ablation treatments, such as radiofrequency, microwave, and laser ablation, are used to treat both benign and malignant tumors. Theoretically, these approaches may produce physiological and structural changes leading to cellular necrosis and structural disruption of selected target tissues. However, in practice, there are many difficulties in the treatment of cancerous tissues by resection, including (i) localization of target tissues, (ii) iden...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/05A61B18/04A61B18/12A61B18/14
CPCA61B2018/00755A61B2018/1432A61B2018/00744A61B2018/1425A61B2018/00875A61B2018/00196A61B2018/00702A61B2018/00791A61B2018/1253A61B2218/002A61B2018/00011A61B2018/00738A61B18/1477A61B2018/0075A61B2018/00726A61B2018/00083A61B2018/143A61B2018/00869A61B2018/00761A61B2018/124A61B2018/00577
Inventor R·M·皮尔逊S·A·丹尼尔D·J·巴贝尔兹T·C·约翰逊Z·亚辛扎德
Owner PULSE POWER CO LTD
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