초록 ▼

An endoscopic or laparoscopic surgical instrument is disclosed having a handle assembly including a barrel portion, stationary handle and a pivoting handle. A body assembly includes a pair of coaxial members attached at one end to the handle assembly, and an inner rod member slidable within an outer

An endoscopic or laparoscopic surgical instrument is disclosed having a handle assembly including a barrel portion, stationary handle and a pivoting handle. A body assembly includes a pair of coaxial members attached at one end to the handle assembly, and an inner rod member slidable within an outer tube member in response to movement of the pivoting handle of the handle assembly. The body assembly terminates at an end remote from the handle assembly in a reciprocatingly movable tool mechanism. A first toothed ratchet mechanism is associated with the pivoting handle, and a second toothed mating ratchet mechanism is operatively associated with the first toothed ratchet mechanism for selectively locking the first toothed ratchet mechanism and the pivoting handle in one of a plurality of selectable positions to thereby position the inner rod member and the movable tool mechanism in predetermined selectable positions. A finger operable trigger member is operatively associated with the second toothed ratchet mechanism for selectively engaging and disengaging the first and second ratchet mechanisms to thereby selectively lock and unlock the movable tool mechanism.

대표청구항 ▼

An endoscopic or laparoscopic surgical instrument which comprises: a) a handle assembly including a barrel portion, a stationary handle and a pivoting handle extending from the barrel portion, the barrel portion having an interior cavity accommodating at least a portion of the pivoting handle, the s

An endoscopic or laparoscopic surgical instrument which comprises: a) a handle assembly including a barrel portion, a stationary handle and a pivoting handle extending from the barrel portion, the barrel portion having an interior cavity accommodating at least a portion of the pivoting handle, the stationary handle having an interior cavity, the pivoting handle having a lower portion forming ratchet teeth; b) a body assembly comprising a pair of coaxial members attached at one end to the barrel portion, and including an inner rod member slidable within an outer tube member in response to movement of the pivoting handle, the body assembly terminating at one end remote from the handle assembly in a reciprocatingly movable tool mechanism; and c) a ratchet assembly operatively associated with the body assembly to provide incremental movement of the tool mechanism, the ratchet assembly including a trigger attached to the stationary handle and having trigger ratchet teeth for engagement with the ratchet teeth of the pivoting handle; and d) an override member that prevents engagement of said ratchet teeth when said override member engages said trigger.