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Electrosurgical system for reducing/removing eschar accumulations on electrosurgical instruments

A technology of electrosurgery and instruments, which is applied in the direction of heating surgical instruments, controlling the energy of instruments, and parts of surgical instruments, etc., which can solve the problems of eschar deposition, energy-consuming removal, and reducing the efficacy of working surfaces, etc.

Inactive Publication Date: 2007-03-07
TEAM MEDICAL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These eschar-reducing solutions still result in eschar deposits and require medical practitioners to expend effort to remove eschar deposited on the working surfaces of surgical instruments
In addition, such cleaning often removes or degrades the special surface treatment of the working surface, reducing the efficacy of the working surface during surgical procedures

Method used

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  • Electrosurgical system for reducing/removing eschar accumulations on electrosurgical instruments
  • Electrosurgical system for reducing/removing eschar accumulations on electrosurgical instruments
  • Electrosurgical system for reducing/removing eschar accumulations on electrosurgical instruments

Examples

Experimental program
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Embodiment Construction

[0037] Figure 1 shows RF electrical waveforms generated by a known electrosurgical signal generator for tissue cutting. As shown, the average voltage bias for the duty cycles shown is greater than 0 volts.

[0038] Figure 2 illustrates an electrosurgical waveform incorporating an aspect of the present invention. Specifically, Figure 2 shows a novel waveform when a negative DC voltage component is used to replace or invert the known RF waveform shown in Figure 1, superimposing an intentional negative bias on the known waveform. It will be appreciated that a negative bias can also be applied by changing the shape of a known RF waveform. In both cases above, the end result is a negative average voltage bias. Although both wave conversion and wave deformation devices may be used in one embodiment, either one may be used to achieve the desired effect.

[0039] For purposes of describing the first aspect of the invention, Figures 3-5 illustrate how a monopolar electrosurgical sys...

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PUM

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Abstract

An electrosurgical system is disclosed that applies electrical energy to obtain a predetermined surgical effect, while also reducing eschar deposits on a working surface of an electrosurgical instrument (4), producing an eschar deposit which is easily removed from the working surface, and / or facilitating removal of eschar deposits during a cleaning procedure. Such benefits may be realized by providing a negative bias on the working surface relative to a return path (7) to source (1) during electrosurgical procedures, and / or during a cleaning procedure which may include contacting the working surface with an electrically conductive liquid.

Description

field of invention [0001] The present invention relates to surgical methods and systems for applying electrical energy to tissue to achieve a desired surgical effect, and more particularly to a surgical method and system for reducing the accumulation of body matter on electrosurgical instruments. The present invention also relates to methods and apparatus for facilitating the removal of bodily matter that may collect on electrosurgical instruments during surgery. Background of the invention [0002] The fundamental uses and benefits of employing electrical energy in surgery are increasing. Specifically, for example, electrosurgical techniques are currently more widely used in laparotomy and laparoscopic surgery to improve the positioning accuracy and coagulation ability of tissue cutting, thereby reducing tissue damage, and compared with traditional surgical methods Many advantages. [0003] Electrosurgical techniques employ a hand-held instrument or pen, a radio frequency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/12A61B18/14A61B18/00A61L2/03G01N21/89
CPCA61B2018/0066G01N21/89A61B18/12A61B18/1206
Inventor 沃伦·P·海姆斯科特·A·米勒第三詹姆斯·L·布拉塞尔
Owner TEAM MEDICAL LLC
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