PLASMA IRRADIATION DEVICE, HANDPIECE, AND SURGICAL OPERATION DEVICE

Title:

PLASMA IRRADIATION DEVICE, HANDPIECE, AND SURGICAL OPERATION DEVICE

Document Type and Number:

WIPO Patent Application WO/2018/193997

Kind Code:

A1

Abstract:

The present invention realizes a feature for enabling hemostasis using the irradiation of low-temperature plasma in a handpiece capable of performing at least one of incision, ablation, and hemostasis of biological tissue using an action member, said configuration being capable of suppressing heating and energization of the biological tissue during hemostasis using the irradiation of low-temperature plasma. A plasma irradiation device (20, 220, 420, 520, 620) comprises a gas flow paths (22, 222, 522), and an electric field generation unit (30, 230, 530), and is provided to a handpiece. The gas flow path (22, 222, 522) supplies gas from outside the handpiece to the distal end part of the action member. The electric field generation unit (30, 230, 530) comprises a first electrode part, a second electrode part, and a dielectric body. The electric field generation unit (30, 230, 530) is disposed in the gas flow path (22, 222, 522), and causes low-temperature plasma discharge by generating an electric field in the spaces inside the gas flow paths (22, 222, 522), on the basis of the potential difference between the first electrode part and the second electrode part.

Inventors:

ITOH SHINSUKE (JP)
YAMADA TAKAAKI (JP)

Application Number:

PCT/JP2018/015589

Publication Date:

October 25, 2018

Filing Date:

April 13, 2018

Export Citation:

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Assignee:

NGK SPARK PLUG CO (JP)

International Classes:

A61B18/04; A61B17/32; A61B18/12

Domestic Patent References:

WO2012005132A1

2012-01-12

Foreign References:

JP2014519875A	2014-08-21
JP2011000224A	2011-01-06
JP2013545530A	2013-12-26
JP2013544122A	2013-12-12

Other References: