A shaft assembly is provided for interconnecting at least one rotatable drive shaft of a hand-held electromechanical surgical device, and an end effector actuatable by an axial drive force. The shaft assembly includes a flexible drive cable rotatably supported in an outer tube, the flexible drive ca
A shaft assembly is provided for interconnecting at least one rotatable drive shaft of a hand-held electromechanical surgical device, and an end effector actuatable by an axial drive force. The shaft assembly includes a flexible drive cable rotatably supported in an outer tube, the flexible drive cable includes a proximal end operatively connected to a respective rotatable drive shaft of the hand-held surgical device. The flexible drive cable being off set a radial distance from a central longitudinal axis of the outer tube. The shaft assembly includes an articulation rod at least partially slidably supported in the outer tube, and an articulation link having a proximal end pivotally connected to the distal end of the articulation rod and a distal end pivotally connected to a distal neck housing. The articulation rod being off set a radial distance from the central longitudinal axis of the outer tube.
대표청구항▼
1. A shaft assembly for interconnecting at least one rotatable drive shaft of a hand-held electromechanical surgical device, and an end effector actuatable by an axial drive force, the shaft assembly comprising: a shaft coupling assembly configured and adapted for selective connection to a connectin
1. A shaft assembly for interconnecting at least one rotatable drive shaft of a hand-held electromechanical surgical device, and an end effector actuatable by an axial drive force, the shaft assembly comprising: a shaft coupling assembly configured and adapted for selective connection to a connecting portion of the surgical device and to be in operative communication with the at least one rotatable drive shaft of the surgical device;an outer tube having a proximal end supported by the shaft coupling assembly, the outer tube defining a central longitudinal axis;a proximal neck housing supported at a distal end of the outer tube;a distal neck housing pivotally connected to the proximal neck housing, wherein a distal end of the distal neck housing is configured and adapted for operative connection with the end effector;a flexible drive cable rotatably supported in the outer tube;a hub rotatably supported at a distal end of the distal neck housing, the hub rotatable about an axis of rotation coaxial with the central longitudinal axis;a rotation nut rotatably supported in the hub and connected to a distal end of the flexible drive cable, the rotation nut radially offset from the central longitudinal axis, wherein the rotation nut is configured to selectively connect to a rotatable drive axle of the end effector;an articulation rod at least partially slidably supported in the proximal neck housing; andan articulation link having a proximal end pivotally connected to the distal end of the articulation rod, and a distal end pivotally connected to the distal neck housing;wherein actuation of the rotatable drive shaft of the hand-held surgical device that is connected to the articulation rod causes the articulation rod to axially translate and axial translation of the articulation rod causes the distal neck housing to pivot off axis relative to the proximal neck housing. 2. The shaft assembly according to claim 1, wherein a pivot axis between the proximal neck housing and the distal neck housing traverses the central longitudinal axis. 3. The shaft assembly according to claim 1, wherein the distal neck housing pivots in a single direction relative to the proximal neck housing. 4. The shaft assembly according to claim 1, wherein the distal neck housing defines a proximal chamfered surface, and wherein the proximal neck housing defines a distal chamfered surface, whereby the distal neck housing is pivotable by about 90° relative to the central longitudinal axis. 5. The shaft assembly according to claim 1, wherein the flexible drive cable includes a proximal end configured to be operatively connected to a respective rotatable drive shaft of the hand-held surgical device; wherein the flexible drive cable is off set a radial distance from the central longitudinal axis of the outer tube. 6. The shaft assembly according to claim 1, wherein the flexible drive cable is sheathed in a coil spring. 7. The shaft assembly according to claim 6, wherein the distal end of the flexible drive cable rotates about the central longitudinal axis as the rotation nut rotates about the central longitudinal axis. 8. The shaft assembly according to claim 7, wherein the rotation nut is rotatable by about +/−90°. 9. The shaft assembly according to claim 7, wherein a pivot axis between the proximal neck housing and the distal neck housing traverses the central longitudinal axis. 10. The shaft assembly according to claim 7, wherein the distal neck housing pivots in a single direction relative to the proximal neck housing. 11. The shaft assembly according to claim 7, wherein the distal neck housing defines a proximal chamfered surface, and wherein the proximal neck housing defines a distal chamfered surface, whereby the distal neck housing is pivotable by about 90° relative to the central longitudinal axis. 12. The shaft assembly according to claim 7, wherein the flexible drive cable includes a proximal end configured to be operatively connected to a respective rotatable drive shaft of the hand-held surgical device; wherein the flexible drive cable is off set a radial distance from the central longitudinal axis of the outer tube. 13. An electromechanical surgical device, comprising an end effector configured to perform at least one function, and a shaft assembly according to claim 1. 14. An electromechanical surgical system, comprising: a hand-held surgical device including a device housing defining a connecting portion for selectively connecting with an adapter assembly and at least one rotatable drive shaft;an end effector configured to perform at least one function; anda shaft assembly for selectively interconnecting the end effector and the surgical device, the shaft assembly including: a proximal neck housing supported at a distal end of the outer tube;a distal neck housing pivotally connected to the proximal neck housing, wherein a distal end of the distal neck housing is configured and adapted for operative connection with the end effector;a flexible drive cable rotatably supported in the outer tube, the flexible drive cable includes: a distal end; anda proximal end operatively connected to a respective rotatable drive shaft of the hand-held surgical device; wherein the flexible drive cable is off set a radial distance from a central longitudinal axis of the outer tube;a hub rotatably supported at a distal end of the distal neck housing, an axis of rotation of the hub being coaxial to the central longitudinal axis; anda rotation nut rotatably supported in the hub and connected to the distal end of the flexible drive cable, wherein the rotation nut is radially offset from the central longitudinal axis and configured to selectively connect with a rotatable drive axle of the end effector. 15. The electromechanical surgical system according to claim 14, wherein the flexible drive cable is sheathed in a coil spring. 16. The electromechanical surgical system according to claim 15, wherein the distal end of the flexible drive cable rotates about the central longitudinal axis as the rotation nut rotates about the central longitudinal axis. 17. The electromechanical surgical system according to claim 14, wherein the rotation nut is rotatable by about +/−90°. 18. The electromechanical surgical system according to claim 14, wherein a pivot axis between the proximal neck housing and the distal neck housing traverses the central longitudinal axis. 19. The electromechanical surgical system according to claim 14, wherein the distal neck housing pivots in a single direction relative to the proximal neck housing. 20. The electromechanical surgical system according to claim 14, wherein the distal neck housing defines a proximal chamfered surface, and wherein the proximal neck housing defines a distal chamfered surface, whereby the distal neck housing is pivotable by about 90° relative to the central longitudinal axis. 21. The electromechanical surgical system according to claim 14, wherein the shaft assembly further includes: an articulation rod at least partially slidably supported in the proximal neck housing, the articulation rod includes: a distal end; anda proximal end operatively connected to a respective rotatable drive shaft of the hand-held surgical device; wherein the articulation rod is off set a radial distance from the central longitudinal axis of the outer tube; andan articulation link having a proximal end pivotally connected to the distal end of the articulation rod, and a distal end pivotally connected to the distal neck housing. 22. The electromechanical surgical system according to claim 21, wherein actuation of the rotatable drive shaft of the hand-held surgical device that is connected to the articulation rod causes the articulation rod to axially translate; and wherein axial translation of the articulation rod causes the distal neck housing to pivot off axis relative to the proximal neck housing.
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