Patent ID: 11896291
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 8:
9. A surgical instrument, comprising:
a housing;
at least one electrode operably coupled to the housing and configured to supply energy to tissue; and
an electrically-insulative shaft extending at least partially between the housing and the at least one electrode, the electrically-insulative shaft including:
an outer tube formed from an electrically-insulative material;
an inner tube formed from an electrically-insulative material; and
an intermediate tube disposed between the outer and inner tubes, the intermediate tube formed from an electrically-conductive material and being electrically isolated within the outer and inner tubes from the remainder of the surgical instrument,
wherein distal ends of the outer and inner tubes extend beyond a distal end of the intermediate tube and are joined to one another to enclose the distal end of the intermediate tube therebetween.