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Electrosurgical instrument with non-liquid thermal transfer

An electrosurgical instrument and heat transfer technology, applied in microwave surgical instruments, parts of surgical instruments, instrument mobile phones, etc., can solve problems such as miniaturization obstacles

Pending Publication Date: 2021-12-10
CREO MEDICAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the space required to circulate the coolant within the cable is an impediment to further miniaturization of the cable itself and any distal probes that may also require cooling

Method used

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  • Electrosurgical instrument with non-liquid thermal transfer
  • Electrosurgical instrument with non-liquid thermal transfer
  • Electrosurgical instrument with non-liquid thermal transfer

Examples

Experimental program
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Embodiment Construction

[0034] figure 1 is a schematic diagram of an electrosurgical system 100 as an embodiment of the present invention. The electrosurgical system 100 is capable of supplying microwave energy to the distal end of an invasive electrosurgical instrument to perform tissue ablation. The electrosurgical system is also capable of supplying fluid, such as liquid medicine or cooling fluid, to the distal end of the invasive electrosurgical instrument. System 100 includes an electrosurgical generator 102 for controllably supplying microwave energy. The electrosurgical generator may be configured to supply pulsed microwave energy. A generator suitable for this purpose is described in WO 2012 / 076844, which is incorporated herein by reference. The electrosurgical generator 102 may be arranged to monitor reflected signals received back from the instrument in order to determine an appropriate power level for delivery. For example, the generator 102 may be arranged to calculate the impedance o...

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PUM

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Abstract

Various embodiments provide an electrosurgical instrument comprising: a flexible coaxial transmission line arranged to convey microwave energy; a radiating tip portion connected at a distal end of the flexible coaxial transmission line and configured to receive the microwave energy, the radiating tip portion comprising: a distal coaxial transmission line for conveying the microwave energy; and a needle tip mounted at a distal end of the distal coaxial transmission line, the needle tip being arranged to deliver the microwave energy into biological tissue; and a heat sink mounted at an interface between the flexible coaxial transmission line and radiating tip portion. The heat sink is in thermal communication with a proximal end of the distal coaxial transmission line and configured to draw thermal energy from the radiating tip portion. Also, a maximum outer diameter of the radiating tip portion is smaller than an outer diameter of the flexible coaxial transmission line. An associated electrosurgical system is also disclosed.

Description

technical field [0001] The present invention relates to an electrosurgical instrument for delivering electromagnetic energy to biological tissue for ablation or coagulation of target tissue. The electrosurgical instrument may be part of an electrosurgical system comprising an electrosurgical generator for supplying RF and / or microwave energy, wherein the electrosurgical instrument is arranged to receive microwave and / or RF energy and deliver it to target tissue. The electrosurgical instrument may be arranged to ablate or coagulate or ablate and coagulate tissue, such as tumors, cysts or other lesions. In the case of coagulation, microwave energy may be used to embolize to cut off the tumor's blood supply; it may be desirable to also ablate the tumor mass when the supply has been cut off. The electrosurgical instrument may be particularly suitable for the treatment of tissues in the pancreas, lung, kidney, brain or liver. Background technique [0002] Electromagnetic (EM) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/18
CPCA61B18/1815A61B2018/1869A61B2018/1861A61B2018/1853A61B2018/00577A61B2018/00047A61B2018/00011A61B2018/00541A61B2018/00529A61B2018/00446A61B2018/00511A61B2018/00589A61B8/12A61B2018/1892A61B2018/00196A61B2018/1876A61B2018/0091A61B2017/00154A61B2018/00702A61B2018/00785A61B2018/00875A61B2018/00946A61B2018/00166A61B2018/00482A61B8/0841A61B2018/00005A61B1/018A61B1/00087A61B2018/0063A61B2018/00982A61B2018/00101A61B2018/00916
Inventor 克里斯托弗·保罗·汉科克帕特里克·伯恩
Owner CREO MEDICAL LTD