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US 11,684,364 B2Granted
Articulation mechanism for surgical stapling device
AssigneeCovidien LP
InventorsJustin Williams, Russell Pribanic, John W. Beardsley, David A. Nicholas
Life of this patent
Estimating the term…
Abstract
A surgical device includes an adapter assembly and a tool assembly that is coupled to the adapter assembly by a pivot member to facilitate articulation of the tool assembly in relation to the adapter assembly. The adapter assembly supports a drive assembly for actuating or firing the tool assembly. The adapter assembly includes an articulation mechanism that adjusts the position of the tool assembly in relation to the drive assembly to compensate for changes in stroke length of the drive assembly that result from articulation of the tool assembly.
Claims20
A surgical stapling device comprising:
- a tool assembly defining a first longitudinal axis and having an anvil and a cartridge assembly, the anvil coupled to the cartridge assembly to facilitate movement of the tool assembly between an open position and a clamped position;
- and
- an adapter assembly defining a second longitudinal axis and including:
- an outer tube having a proximal portion and a distal portion, the distal portion of the outer tube supporting the tool assembly such that the tool assembly is movable between a non-articulated position in which the first longitudinal axis of the tool assembly is aligned with the second longitudinal axis of the adapter assembly, and an articulated position in which the first longitudinal axis of the tool assembly is misaligned with the second longitudinal axis of the adapter assembly;
- a drive assembly movable in relation to the tool assembly between a retracted position and an advanced position to move the tool assembly from the open position to the clamped position and to eject staples from the cartridge assembly;
- and
- an articulation mechanism including an adapter cam and a first articulation link, the adapter cam defining a first cam channel, and a second cam channel, the first articulation link having a distal portion coupled to the tool assembly and a proximal portion that supports a first cam member that is received within the first cam channel of the adapter cam, and the proximal portion of the outer tube supporting a second cam that is received within the second cam channel of the adapter cam, wherein movement of the adapter cam causes movement of the first articulation link to move the tool assembly between the non-articulated position and the articulated positions and causes movement of the outer tube in relation to the drive assembly to change a position of the tool assembly in relation to the drive assembly.
4 more elements
A surgical device comprising:
- a tool assembly defining a first longitudinal axis;
- and
- an adapter assembly defining a second longitudinal axis and including:
- an outer tube having a proximal portion and a distal portion, the distal portion of the outer tube supporting the tool assembly such that the tool assembly is movable from a non-articulated position in which the first longitudinal axis of the tool assembly is aligned with the second longitudinal axis of the adapter assembly and an articulated position in which the first longitudinal axis of the tool assembly is misaligned with the second longitudinal axis of the adapter assembly;
- a drive assembly movable between a retracted position and an advanced position through the tool assembly to actuate the tool assembly;
- and
- an articulation mechanism including an adapter cam and an articulation link, the adapter cam defining a first cam channel and a second cam channel, the articulation link having a distal portion coupled to the tool assembly and a proximal portion that supports a first cam member that is received within the first cam channel of the adapter cam, the proximal portion of the outer tube supporting a second cam that is received within the second cam channel of the adapter cam, wherein movement of the adapter cam causes movement of the articulation link to move the tool assembly between the non-articulated position and the articulated position and causes movement of the outer tube in relation to the drive assembly to change a position of the tool assembly in relation to the drive assembly.
4 more elements
Dependencies are inferred from the claim text.