Flexible endoscopic stitching devices
A handle assembly for operating a surgical instrument is provided and includes a housing; a trigger operatively supported on the housing; and an articulation assembly supported on the housing for effectuating an articulation of an end effector operatively connected to the housing, the articulation assembly being operable to effect articulation of the end effector in a first pair of opposed directions and a second pair of opposed direction which is substantially transverse to the first pair of opposed directions.
1. A control assembly for an endoscopic stitching device, the control assembly comprising:
a housing;
an articulation assembly including first and second control elements supported on the housing; and
an end effector operatively connected to the housing, the end effector including a tool assembly configured and adapted to perform at least a pair of operations, wherein the articulation assembly is connected to the end effector in such a manner that operation of the first control element of the articulation assembly causes articulation to the end effector in a first pair of opposed directions in a first plane and operation of the second control element of the articulation assembly causes a second pair of opposed directions in a second plane substantially transverse to the first plane.
2. The control assembly according to claim 1 , wherein the housing further includes at least one actuation cable operatively connected to the tool assembly in such a manner that the actuation cable effects a first operation of the at least a pair of operations of the end effector upon axial translation thereof and a second operation of the at least a pair of operations of the end effector upon rotation thereof.
3. The control assembly according to claim 2 , wherein each control element of the first and second control elements is operatively connected to proximal ends of a pair of articulation cables operatively coupled to the end effector.
4. The control assembly according to claim 3 , wherein a first movement of the first control element results in axial translation of the respective articulation cables in opposed directions to one another, and a second movement of the first control element results in reversed axial translation of the respective articulation cables.
5. The control assembly according to claim 4 , wherein the first movement of the first control element is a rotation in a first direction, and the second movement of the first control element is a rotation in a second direction.
6. The control assembly according to claim 4 , wherein a first movement of the second control element results in axial translation of the respective articulation cables in opposed directions to one another, and wherein a second movement of the second control element results in reversed axial translation of the respective articulation cables.
7. The control assembly according to claim 6 , wherein the first movement of the second control element is a rotation in a third direction, and the second movement of the second control element is a rotation in a fourth direction opposite of the third direction.