Suturing instrument with motorized needle drive

1. A surgical instrument comprising:

(a) a body;

(b) at least one user input feature;

(c) an elongate shaft, wherein the elongate shaft comprises a distal end and a proximal end, wherein the elongate shaft extends distally from the body and defines a longitudinal axis, wherein the elongate shaft is removably attached to the body at the proximal end such that the elongate shaft is configured to be selectively detached from the body;

(d) a needle applier, wherein the needle applier is removably located at the distal end of the elongate shaft such that the needle applier is configured to be selectively removed from the elongate shaft, wherein the needle applier further comprises:

(i) a needle, and

(ii) a drive assembly coupled to the needle, wherein the drive assembly is configured to drive the needle along an orbital path about a rotation axis that is transverse to the longitudinal axis, in response to an actuation of the user input feature; and

(e) a motor, wherein the motor is configured provide motion to the needle applier to thereby actuate the drive assembly.

2. The surgical instrument according to claim 1 , wherein the body comprises a transmission assembly, wherein the transmission assembly is configured to communicate motion from the motor to the needle applier to thereby actuate the drive assembly.

3. The surgical instrument according to claim 2 , wherein the elongate shaft comprises an articulation joint, wherein the elongate shaft is operable to articulate at the articulation joint to thereby deflect the needle applier toward and away from the longitudinal axis of the elongate shaft.

4. The surgical instrument according to claim 3 , wherein the motor is configured to provide motion to the articulation joint to thereby to drive articulation of the elongate shaft.

5. The surgical instrument according to claim 4 , wherein the transmission assembly is configured to communicate motion from the motor to the articulation joint.

6. The surgical instrument according to claim 5 , wherein the transmission assembly is configured to switch between communicating motion from the motor to the needle applier to thereby actuate the drive assembly and communicating motion from the motor to the articulation joint.

7. The surgical instrument according to claim 6 , wherein the at least one user input feature comprises a first user input feature and a second user input feature.

8. The surgical instrument according to claim 7 , wherein the first user input feature is operable cause communication of motion from the motor to the needle applier to thereby actuate the drive assembly, wherein the second user input feature is operable to cause communication of motion from the motor to the articulation joint.

9. The surgical instrument according to claim 2 , wherein the distal end of the elongate shaft is rotatable about the longitudinal axis relative to the elongate shaft so as to cause rotation of the needle applier about the longitudinal axis relative to the elongate shaft.

10. The surgical instrument according to claim 9 , wherein the motor is configured to provide rotary motion to the distal end of the elongate shaft to thereby drive rotation of the needle applier about the longitudinal axis of the elongate shaft.

11. The surgical instrument according to claim 10 , wherein the transmission assembly is configured to communicate rotary motion from the motor to the distal end of the elongate shaft to thereby drive rotation of the needle applier about the longitudinal axis of the elongate shaft.

12. The surgical instrument according to claim 11 , wherein the transmission assembly is configured to switch between communicating motion from the motor to the needle applier to thereby actuate the drive assembly and communicating motion from the motor to the distal end of the elongate shaft to thereby drive rotation of the needle applier about the longitudinal axis of the elongate shaft.

13. The surgical instrument according to claim 12 , wherein the at least one user input feature comprises a first user input feature and a second user input feature.

14. The surgical instrument according to claim 13 , wherein the first user input feature is operable cause communication of motion from the motor to the needle applier to thereby actuate the drive assembly, wherein the second user input feature is operable to cause communication of motion from the motor to the distal end of the elongate shaft to thereby drive rotation of the needle applier about the longitudinal axis of the elongate shaft.

15. The surgical instrument according to claim 2 , wherein the transmission assembly comprises a solenoid, wherein the solenoid is operable to shift the transmission assembly between at least two states.

16. The surgical instrument according to claim 1 , wherein the elongate shaft comprises a cartridge receiving assembly, wherein the needle applier comprises a cartridge removably coupled with the cartridge receiving assembly.

17. The surgical instrument according to claim 1 , wherein the body comprises a battery pack, wherein the battery pack is configured to provide power to the motor.

18. The surgical instrument according to claim 17 , wherein the battery pack is removably coupleable with the body.

19. A surgical instrument comprising:

(a) a body;

(b) at least one user input feature;

(c) an elongate shaft, wherein the elongate shaft comprises a distal end and a proximal end, wherein the elongate shaft extends distally from the body and defines a longitudinal axis, wherein the elongate shaft comprises an articulation joint;

(d) a needle applier, wherein the needle applier is located distal to the articulation joint, the needle applier comprising:

(i) a needle, and

(ii) a drive assembly coupled to the needle, wherein the drive assembly is configured to drive the needle in an orbital motion about a rotation axis that is transverse to the longitudinal axis, in response to an actuation of the user input feature,

wherein the articulation joint is operable to deflect the needle applier toward and away from the longitudinal axis of the elongate shaft,

wherein the needle applier is rotatable relative to the elongate shaft about the longitudinal axis; and

(e) a motor, wherein the motor is configured to provide motion to the needle applier to thereby actuate the drive assembly and further configured to provide motion to the articulation joint to thereby deflect the needle applier toward and away from the longitudinal axis of the elongate shaft, wherein the motor is further configured to drive rotation of the needle applier about the longitudinal axis.

20. A surgical instrument comprising:

(a) a body;

(b) at least one user input feature;

(c) an elongate shaft, wherein the elongate shaft comprises a distal end and a proximal end, wherein the elongate shaft extends distally from the body and defines a longitudinal axis, wherein the elongate shaft comprises an articulation joint including at least one pivot pin;

(d) a needle applier, wherein the needle applier is located distal to the articulation joint, the needle applier comprising:

(i) a needle, and

(ii) a drive assembly coupled to the needle, wherein the drive assembly is configured to drive the needle in an orbital motion about a rotation axis that is transverse to the longitudinal axis, in response to an actuation of the user input feature,

wherein the articulation joint is operable to deflect the needle applier toward and away from the longitudinal axis of the elongate shaft about the at least one pivot pin;

(e) a motor; and

a transmission assembly, wherein the transmission assembly is configured to switch between communicating motion from the motor to the needle applier to thereby actuate the drive assembly and communicating motion from the motor to the articulation joint to thereby deflect the needle applier toward and away from the longitudinal axis of the elongate shaft.