| 摘要 |
An endoscopic or laparoscopic surgical instrument having an internally disposed ratchet mechanism located within a barrel portion of a handle assembly. The instrument includes a handle assembly having a pivoting handle and a station ary handle, a barrel portion to which an elongated body assembly is secured, and a ratchet mechanism for releasably positioning a tool mechanism located at the dis tal end of the body assembly at various increments. The ratchet mechanism comprises a pawl member and a rack member which are disposed within the handle assembly. A rotational knob and locking member may also be provided to lock the body assembl y at various orientations to the longitudinal axis.
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