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Energy delivery system

An energy and energy transfer technology, applied in medical science, surgery, microwave surgical instruments, etc., can solve problems such as increased complication rate, burns around the insertion area, and difficulty

Inactive Publication Date: 2009-04-15
NEUWAVE MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, larger size feeders are undesirable as they are less easily inserted percutaneously and may increase procedural complication rates
Also, heating the feedline at higher wattages can cause burns around the insertion area of ​​the unit

Method used

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Examples

Experimental program
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Effect test

example 1

[0052] The power loss of several coaxial transmission lines with different combinations of polytetrafluoroethylene (PTFE) dielectric material, air dielectric material, copper wire and silver wire has been examined. Such as image 3 As shown, a standard copper conductor with a PTFE dielectric cable produces the highest temperature (-92°C at 100W input power). Removing the PTFE dielectric gave an impedance of 64Ω, which resulted in a lower temperature (-76°C at 100W) that did not change whether copper (Cu) or silver (Ag) was used as the inner conductor. Changing the inner-to-outer conductor diameter ratio to create a 77Ω cable with an air dielectric results in the lowest temperature (~66°C at 100W).

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Abstract

The present invention relates to systems and devices for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In particular, the present invention relates to systems and devices for the delivery of energy with optimized characteristic impedance. In certain embodiments, methods are provided for treating a tissue region (e.g., a tumor) through application of energy with the systems and devices of the present invention.

Description

[0001] This application claims priority to U.S. Provisional Application Serial No. 60 / 785,466, filed March 24, 2006, the entire contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to systems and devices for delivering energy to tissue for a wide range of applications, including medical procedures (e.g. tissue ablation, resection, cauterization, vascular thrombosis, cardiac arrhythmia and treatment of rhythm disorders, electrosurgery, tissue harvesting, etc.). In particular, the present invention relates to systems and devices for transferring energy with optimized characteristic impedance. In certain embodiments, methods for treating a tissue site, such as a tumor, are provided through the application of energy with the systems and devices of the present invention. Background technique [0003] Ablation is an important therapeutic modality for the treatment of certain tissues such as benign and malignant tumors, car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/18
CPCA61B18/1815A61B2018/183A61B18/14A61B18/18
Inventor D·W·万德韦德小F·T·李P·F·雷斯克C·L·布雷斯
Owner NEUWAVE MEDICAL