Surgical stapling device
First Claim
1. A surgical stapling device comprising:
- a handle assembly;
an elongated body portion extending distally from the handle assembly and defining a longitudinal axis;
a shell assembly supported on a distal end portion of the elongated body portion and including a staple guide, the staple guide defining a plurality of staple receiving pockets that support a plurality of staples;
an anvil assembly including an anvil head that defines a tissue engagement surface having a plurality of staple forming pockets, the tissue engagement surface defining a plane and being movable relative to the longitudinal axis between a first position and a second position, the plane being perpendicular with the longitudinal axis in one of the first and second positions and defining an acute angle with the longitudinal axis in the other of the first and second positions;
an anvil retainer assembly supported within the shell assembly and being adapted to releasably engage the anvil assembly to movably support the anvil assembly in relation to the shell assembly such that the tissue engagement surface of the anvil head moves between the first and second positions when the anvil retainer assembly is secured to the anvil assembly, the anvil retainer assembly including a body portion and a trocar that is axially movable through the body portion between proximal and distal positions to facilitate movement of the anvil head between the first and second positions; and
a biasing member for urging the trocar towards the proximal position.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical stapling device has a handle assembly, an elongated body portion, a shell assembly housing a plurality of staples and an anvil assembly movable relative to the shell assembly. An approximation mechanism is movable from a first position to a second position to move the anvil assembly relative to the shell assembly between a spaced position and an approximated position. A firing mechanism for advancing the staples is actuable when the approximation assembly is in the second position and the anvil assembly is in the approximated position. A lockout mechanism operatively associated with the approximation mechanism is movable from a non-blocking position to a blocking position, wherein in the non-blocking position the approximation mechanism is movable from the first position to the second position and in the blocking position movement of the approximation mechanism from the second position to the first position is prevented.
464 Citations
12 Claims
-
1. A surgical stapling device comprising:
-
a handle assembly; an elongated body portion extending distally from the handle assembly and defining a longitudinal axis; a shell assembly supported on a distal end portion of the elongated body portion and including a staple guide, the staple guide defining a plurality of staple receiving pockets that support a plurality of staples; an anvil assembly including an anvil head that defines a tissue engagement surface having a plurality of staple forming pockets, the tissue engagement surface defining a plane and being movable relative to the longitudinal axis between a first position and a second position, the plane being perpendicular with the longitudinal axis in one of the first and second positions and defining an acute angle with the longitudinal axis in the other of the first and second positions; an anvil retainer assembly supported within the shell assembly and being adapted to releasably engage the anvil assembly to movably support the anvil assembly in relation to the shell assembly such that the tissue engagement surface of the anvil head moves between the first and second positions when the anvil retainer assembly is secured to the anvil assembly, the anvil retainer assembly including a body portion and a trocar that is axially movable through the body portion between proximal and distal positions to facilitate movement of the anvil head between the first and second positions; and a biasing member for urging the trocar towards the proximal position. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A surgical stapling device comprising:
-
a handle assembly; an elongated body portion extending distally from the handle assembly and defining a longitudinal axis; a shell assembly supported on a distal end portion of the elongated body portion and including a staple guide, the staple guide defining a plurality of staple receiving pockets that support a plurality of staples; an anvil assembly including an anvil head that defines a tissue engagement surface having a plurality of staple forming pockets, the tissue engagement surface defining a plane and being movable relative to the longitudinal axis between a first position and a second position, the plane being perpendicular with the longitudinal axis in one of the first and second positions and defining an acute angle with the longitudinal axis in the other of the first and second positions;
an anvil retainer assembly supported within the shell assembly and being adapted to releasably engage the anvil assembly to movably support the anvil assembly in relation to the shell assembly, the anvil retainer assembly including a body portion and a trocar that is axially movable through the body portion between proximal and distal positions to facilitate movement of the anvil head between the first and second positions, a distal end portion of the trocar being adapted to connect to the anvil assembly to facilitate movement of the tissue engagement surface of the anvil head between the first position and a second position; anda biasing member for urging the trocar towards the proximal position. - View Dependent Claims (8)
-
-
9. A surgical stapling device comprising:
-
a handle assembly; an elongated body portion extending distally from the handle assembly and defining a longitudinal axis; a shell assembly supported on a distal end portion of the elongated body portion and including a staple guide, the staple guide defining a plurality of staple receiving pockets that support a plurality of staples; an anvil assembly including an anvil head that defines a tissue engagement surface having a plurality of staple forming pockets, the tissue engagement surface defining a plane and being movable relative to the longitudinal axis between a first position and a second position, the plane being perpendicular with the longitudinal axis in one of the first and second positions and defining an acute angle with the longitudinal axis in the other of the first and second positions;
an anvil retainer assembly supported within the shell assembly and being adapted to releasably engage the anvil assembly to movably support the anvil assembly in relation to the shell assembly, the anvil retainer assembly including a body portion and a trocar that is axially movable through the body portion between proximal and distal positions to facilitate movement of the anvil head between the first and second positions;a biasing member for urging the trocar towards the proximal position; and a cam member supported on the body portion of the anvil retainer assembly, the cam member being adapted to facilitate movement of the trocar between the proximal and distal positions. - View Dependent Claims (10, 11, 12)
-
Specification