Title:
湾曲した超音波ブレードを有する超音波及び電気外科用複合器具
Document Type and Number:
Japanese Patent JP7179774
Kind Code:
B2
Abstract:
A surgical instrument includes an ultrasonic transducer, a shaft extending distally along a shaft axis, a waveguide acoustically coupled with the ultrasonic transducer and extending distally through the shaft, and an end effector at a distal end of the shaft. The end effector includes an ultrasonic blade acoustically coupled with the waveguide. A nodal support element is arranged within a distal portion of the shaft and encircles the waveguide at a distal-most acoustic node of the waveguide. The nodal support element includes a support portion aligned with the distal-most acoustic node, and a sealing portion extending axially from the support portion. The support portion engages an inner surface of the shaft and is configured to support the waveguide in coaxial alignment with the shaft axis. The sealing portion sealingly engages the inner surface of the shaft and is configured to prevent proximal ingress of fluid through the shaft.
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Inventors:
Estella Frederick El
Application Number:
JP2019564478A
Publication Date:
November 29, 2022
Filing Date:
May 21, 2018
Export Citation:
Assignee:
Ethicon LLC
International Classes:
A61B17/32; A61B18/14
Domestic Patent References:
| JP2003527155A | ||||
| JP2014121618A | ||||
| JP2015516231A |
Foreign References:
| WO2016190171A1 | ||||
| US20020183774 | ||||
| WO2013115036A1 |
Attorney, Agent or Firm:
Kiminobu Kato
Takafumi Oshima
Takafumi Oshima