Surgical tool arrangement having a handpiece usable with multiple surgical tools

An electrosurgical instrument for use with a surgical handpiece, said instrument defining a longitudinal axis and comprising a hub assembly defining a proximal end of said instrument and a shaft assembly fixed to and projecting distally from said hub assembly, said shaft assembly at a distal end thereof defining an electrosurgical element for electrically treating patient tissue, said hub assembly comprising a generally cylindrical base body having a distal end mounting therein a proximal end of said shaft assembly and a proximal end spaced from said distal end and configured for mounting within a surgical handpiece, said hub assembly further comprising a spring-loaded electrical contact member, said contact member having an inner leg disposed in electrical contact with a conductive member of said shaft assembly electrically connected to said electrosurgical element and an outer leg, said inner leg being seated in a recess defined in said base body and connected to said outer leg to support said outer leg in substantially radially opposed relation with said inner leg, said outer leg projecting exteriorly of said base body for cooperation with a surgical handpiece, and a sealing member disposed in said recess in surrounding relation with a portion of said outer leg of said contact member.

A surgical tool arrangement comprising a handpiece defining a longitudinal axis, said handpiece including a housing having a proximal end and a distal end spaced therefrom and defined by a generally tubular side wall of said housing, said side wall defining an interior which opens axially and is configured to receive therein one of a plurality of surgical instruments usable with said handpiece, and a locking mechanism mounted on said distal end and including a lock lever mounted on said housing for pivoting movement relative thereto about a pivot axis, said lock lever having a first part disposed and configured for manipulation by a user and a second part, the pivot axis being disposed between said first and second parts, said lock lever having a locked position wherein a portion of said lock lever is disposed to engage said one surgical instrument to prevent removal thereof from said handpiece, said lock lever being movable into an unlocked position wherein said first part pivots in a first direction and said second part pivots in a second direction opposite the first direction to disengage said portion from said one surgical instrument to permit removal thereof from said handpiece.

A surgical tool arrangement comprising a handpiece defining a longitudinal axis, said handpiece including a housing having a proximal end and a distal end spaced therefrom and defined by a generally tubular side wall of said housing, said side wall defining an interior which opens axially to define a surgical instrument-receiving opening, and a locking mechanism mounted on said distal end and including a lock lever mounted on said housing for pivoting movement relative thereto about a pivot axis, said lock lever having a first part disposed and configured for manipulation by a user and a second part, the pivot axis being disposed between said first and second parts, said lock lever having a locked position wherein a portion of said lock lever is disposed in a surgical instrument-engagement position, said lock lever being movable into an unlocked position wherein said first part pivots in a first direction and said second part pivots in a second direction opposite the first direction to move said lock lever into a surgical instrument-disengagement position.