Surgical instrument including a locking assembly

A surgical stapling instrument, comprising:

• a handle portion including a movable handle, and a stationary handle;
• a body portion extending distally from the handle portion and defining a first longitudinal axis;
• a control rod disposed at least partially within the body portion and being disposed in mechanical cooperation with the movable handle;
• a tool assembly disposed at a distal end of the body portion, the tool assembly including an anvil assembly and a cartridge assembly, the cartridge assembly being pivotably movable with respect to the anvil assembly between an open position and an approximated position, the anvil assembly including an anvil plate and a cover attached to the anvil plate, the cover including a first lateral side having a first aperture and a second lateral side having a second aperture, the tool assembly including a channel, an upper mounting member, and a lower mounting member, the lower mounting member including a first protrusion and a second protrusion, the first aperture configured to receive the first protrusion, and the second aperture configured to receive the second protrusion, the channel being pivotably attached to the lower mounting member, and the anvil assembly being pivotably attached to the lower mounting member, wherein the tool assembly is movable from a first position in which a second longitudinal axis of the tool assembly is substantially aligned with the first longitudinal axis to at least a second position in which the second longitudinal axis is disposed at an angle to the first longitudinal axis;
• and
• a locking assembly including a pusher mating surface disposed in mechanical cooperation with the body portion, and a pivot mating surface disposed in mechanical cooperation with the tool assembly, the pusher mating surface configured to engage the pivot mating surface, the locking assembly configured to maintain the tool assembly in the first position.

A surgical stapling instrument, comprising:

• a handle portion including a movable handle, and a stationary handle;
• a body portion extending distally from the handle portion and defining a first longitudinal axis;
• a control rod disposed at least partially within the body portion and being disposed in mechanical cooperation with the movable handle;
• a tool assembly disposed at a distal end of the body portion, the tool assembly including an anvil assembly and a cartridge assembly, the cartridge assembly being pivotably movable with respect to the anvil assembly between an open position and an approximated position, the anvil assembly including an anvil plate and a cover attached to the anvil plate, the tool assembly including a channel, an upper mounting member, and a lower mounting member, the cover including a proximally protruding member with an opening and the upper mounting member including a protrusion, the opening receiving the protrusion, the channel being pivotably attached to the lower mounting member, and the anvil assembly being pivotably attached to the lower mounting member, wherein the tool assembly is movable from a first position in which a second longitudinal axis of the tool assembly is substantially aligned with the first longitudinal axis to at least a second position in which the second longitudinal axis is disposed at an angle to the first longitudinal axis;
• and
• a locking assembly including a pusher mating surface disposed in mechanical cooperation with the body portion, and a pivot mating surface disposed in mechanical cooperation with the tool assembly, the pusher mating surface configured to engage the pivot mating surface, the locking assembly configured to maintain the tool assembly in the first position.

A surgical stapling instrument, comprising:

• a handle portion including a movable handle, and a stationary handle;
• a body portion extending distally from the handle portion and defining a first longitudinal axis;
• a control rod disposed at least partially within the body portion and being disposed in mechanical cooperation with the movable handle;
• a tool assembly disposed at a distal end of the body portion, the tool assembly including an anvil assembly and a cartridge assembly, the cartridge assembly being pivotably movable with respect to the anvil assembly between an open position and an approximated position, the anvil assembly including an anvil plate and a cover attached to the anvil plate, the tool assembly including a channel, an upper mounting member, and a lower mounting member, the channel being pivotably attached to the lower mounting member, and the anvil assembly being pivotably attached to the lower mounting member, wherein the tool assembly is movable from a first position in which a second longitudinal axis of the tool assembly is substantially aligned with the first longitudinal axis to at least a second position in which the second longitudinal axis is disposed at an angle to the first longitudinal axis;
• and
• a locking assembly including a pusher mating surface disposed in mechanical cooperation with the body portion, and a pivot mating surface disposed in mechanical cooperation with the tool assembly, the pusher mating surface configured to engage the pivot mating surface, the pusher mating surface biased toward the pivot mating surface by at least one spring, the locking assembly configured to maintain the tool assembly in the first position.