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Electrosurgical instrument

A technology for electrosurgical instruments and instruments, which is applied in microwave surgical instruments, drug flushing surgical instruments, surgical instruments for sucking substances, etc., can solve the problems of cell rupture and increase of internal pressure of cells, etc.

Pending Publication Date: 2021-06-25
CREO MEDICAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a large rise in the internal pressure of the cell that the cell membrane cannot control, causing the cell to rupture

Method used

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Examples

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Embodiment Construction

[0086] figure 1 is a schematic diagram of a complete electrosurgical system 100 capable of supplying microwave energy and radiofrequency energy to the distal end of an invasive electrosurgical instrument. System 100 includes a generator 102 for controllably supplying microwave energy and radio frequency energy. Suitable generators for this purpose are described in WO2012 / 076844, which is incorporated herein by reference. The generator may be arranged to monitor reflected signals received back from the instrument in order to determine the appropriate power level for delivery. For example, the generator may be arranged to calculate the impedance seen from the distal end of the instrument in order to determine the optimum delivered power level. Generator 102 is connected to interface header 106 by interface cable 104 .

[0087] System 100 also includes a fluid supply unit 108 containing fluid for use with the electrosurgical instrument. The fluid can be a liquid (such as a li...

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Abstract

In one aspect, the disclosure presents an electrosurgical instrument for performing haemostasis by radiating microwave energy from a distal tip, where conductive radiating electrodes are coated in an insulating non-stick material. In another aspect, the disclosure provides an electrosurgical instrument for performing haemostasis using radiofrequency or microwave electromagnetic energy, where a distal tip of the instrument comprises a conductive hollow needle for conveying fluid to or from a treatment site, wherein the hollow needle is electrically grounded.

Description

technical field [0001] The present invention relates to an electrosurgical instrument for delivering microwave energy and / or radiofrequency energy to biological tissue to ablate target tissue. The electrosurgical instrument includes a fluid delivery channel coupled to a needle for delivering fluid to a treatment site. The probe may be inserted through the channel of an endoscope or catheter, or may be used during laparoscopic or open surgery. [0002] Background of the invention [0003] Electromagnetic (EM) energy, particularly microwave and radio frequency (RF) energy, has been found useful in electrosurgery because of its ability to cut, coagulate, and ablate body tissue. Generally, an apparatus for delivering EM energy to body tissue includes a generator containing a source of EM energy, and an electrosurgical instrument coupled to the generator for delivering energy to tissue. Conventional electrosurgical instruments are often designed to be inserted percutaneously int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/18
CPCA61B18/1815A61B2018/1869A61B2018/1861A61B2018/0013A61B18/1492A61B18/1477A61B18/042A61B2018/00577A61B2018/00589A61B2218/002A61B2218/007A61B2018/00196A61B2018/1823A61B2018/1876A61B2218/001A61B2018/00083A61B2018/00011A61B2018/00601A61B2018/00994A61B18/1206A61B2018/00077A61B2018/00178
Inventor C·P·汉考克乌尔里奇·乔治S·莫里斯大卫·韦伯S·普雷斯顿列夫·盖根丹·克罗克S·斯温
Owner CREO MEDICAL LTD