| CPC A61B 18/1445 (2013.01) [A61B 2018/1457 (2013.01)] | 18 Claims |
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1. An end effector for a minimally invasive medical device, comprising:
a base configured to attach to a distal end of a shaft; and
a disposable distal portion configured to removably attach to the base to be disposed of after use,
wherein the disposable distal portion includes an electrically conductive material for an electrosurgical procedure, wherein the disposable distal portion is electrically connected to the base when removably attached to the base,
wherein the disposable distal portion is or includes blades or jaws including a conductive material to provide electrosurgical energy to tissue,
wherein the disposable distal portion includes:
a mount portion configured to abut the base; and
a clevis connected to the mount portion, wherein the blades or jaws are mounted to the clevis to pivot about a pivot joint of the clevis,
wherein the base is configured to removably mechanically engage the blades or jaws to actuate the blades or jaws,
wherein the base includes a drive structure configured to mechanically engage the blades or jaws to actuate the blades or jaws between an open and a closed position,
wherein the clevis further comprises a non-conductive material, and the mount portion further comprises a non-conductive center post configured to mechanically connect the blades or jaws to the drive structure to actuate the blades or jaws between the open and the closed position,
wherein the disposable distal portion and the base are configured to be selectively axially retained together by a locking sleeve, wherein the locking sleeve is configured to selectively lock the disposable distal portion to the base, and
wherein the base includes one or more locking channels, wherein the disposable distal portion includes one or more alignment channels defined through a lip, wherein the locking sleeve includes a plurality of lock protrusions on an inner surface thereof, one or more proximal lock protrusions are configured to be axially advanced through the alignment channels beyond the lip and rotated into a respective locking channel, wherein one or more distal inner stop protrusions are configured to axially engage the lip to limit axial advancement of the sleeve and to retain the disposable distal portion to the base when the sleeve is rotated into a locked position such that the one or more proximal lock protrusions are within the one or more locking channels.
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