| 摘要 |
An electrosurgical knife having an elongated knife handle of simple construction and inexpensive to manufacture has an opening at one end for accommodating an electrosurgical electrode and electric switches for controlling the application of current to the electrode. The handle is provided with a pair of grooves, one for optionally retaining an optical conduit and the other for optionally retaining a fluid-transporting tube. Both the optical conduit and the tube can slide in the grooves, allowing them to be readily adjusted to be adjacent the distal end of electrodes of varying lengths. The knife handle has an internal passageway extending the length of the handle for accommodating electrical conductors and a printed circuit board. The handle further has an enlarged section for enclosing a pair of push-button switches with exposed outer surfaces. Electrical connections may be established between the electrical conductors and the electrosurgical blade on the circuit board by operating the switches. The knife handle has two substantially symmetrical elongated sections joined along the length of the handle. Each of the sections has areas defining a portion of the two grooves and of the passageway. The knife handle may be readily assembled by inserting the electrical devices, such as the conductors, the circuit board and the switches in one half of the knife and joining the other half of the knife to it.
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