| 主权项 |
1. A hand-held instrument comprising:
a hand piece configured to be held by a user, the hand piece having a proximal end and a distal end; an extendable shaft movably associated with and disposed at least partially within the hand piece, the extendable shaft having a proximal end and a distal end and being selectively movable relative to the hand piece between a retracted position and an extended position, the proximal end of the extendable shaft being movably disposed within the hand piece such that the proximal end of the extendable shaft is positioned closer to the distal end of the hand piece when the extendable shaft is in the extended position than when the extendable shaft is in the retracted position; a nozzle disposed at the distal end of the extendable shaft, the nozzle being adapted to have smoke, gas, or fluid drawn therethrough; and a utility conduit connected to the distal end of the extendable shaft, the utility conduit comprising a power cable for transmitting electrical energy to the hand piece and an evacuation hose in fluid communication with the nozzle, the evacuation hose being configured to convey away the smoke, gas, or fluid drawn into the nozzle, wherein the utility conduit moves with the extendable shaft and relative to the hand piece when the extendable shaft moves between the retracted position and the extended position. |
