| 摘要 |
An electrosurgical instrument according to the present invention includes a handle, an elongated tube, an end effector, a pair of wireform conductors extending through the elongated tube from the handle to the end effector and a working tool such as, for example, a knife blade. The working tool being connected to the handle through a push bar which passes through the elongated tube. In an electrosurgical instrument according to the present invention, the push bar is positioned between the wireform conductors and is axially moveable with respect to the wireform conductors. In addition, in an electrosurgical instrument according to the present invention, the handle includes a coupling element to allow the wireform conductors and push bar to rotate with respect to the handle and to allow the push bar to move axially with respect to the wireform conductors and the handle.
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