Needle loading unit for surgical suturing apparatus

1. A loading unit assembly for use with a surgical suturing apparatus, the loading unit assembly comprising:

a surgical needle having a central crimped portion defining an aperture therethrough, the surgical needle defining a first groove and a second groove on an outer surface thereof;

a length of suture material having a first end portion and a second end portion, the first end portion of the length of suture material secured to the aperture of the central crimped portion of the surgical needle, the second end portion of the length of suture material releasably secured to a base of the loading unit; and

a support structure including:

a first finger;

a second finger adjacent to the first finger, the first and second fingers defining a first channel therebetween, each of the first and second fingers including a tooth on an outer surface thereof; and

a third finger defining a seat portion and a back portion, the seat and back portions in facing relation with the first and second fingers, wherein the third finger and the first and second fingers define a second channel therebetween, the support structure configured to releasably secure the surgical needle loaded in the second channel and in abutment with at least the seat portion, wherein each tooth of the first and second fingers is selectively receivable in the first or second groove of the surgical needle.

2. The loading unit assembly of claim 1 , wherein the central crimped portion of the surgical needle is disposed on the seat portion of the third finger such that a longitudinal axis of the surgical needle is oriented orthogonally relative to a longitudinal axis of the support structure.

3. The loading unit assembly of claim 2 , wherein a central longitudinal axis of the first and second grooves is oriented at an angle relative to a central axis of the aperture of the central crimped portion.

4. The loading unit of claim 3 , wherein the angle is from about 5 degrees to about 40 degrees.

5. The loading unit assembly of claim 4 , wherein when each tooth of the first and second fingers is selectively received in the corresponding first or second groove of the surgical needle, the first end portion of the length of the suture material extends perpendicularly relative to the seat portion of the third finger, and the first end portion of the length of suture material extends between the first channel defined between the first and second fingers.

6. The loading unit of claim 4 , wherein when each tooth of the first and second fingers is selectively received in the corresponding first or second groove of the surgical needle, the first end portion of the length of the suture material extends parallel relative to the seat portion of the third finger, and the first end portion of the length of suture material extends between the first channel defined between the first and second fingers.

7. The loading unit assembly of claim 3 , wherein the surgical needle further defines first and second recesses on the outer surface thereof.

8. The loading unit assembly of claim 7 , wherein a central longitudinal axis of each of the first and second recesses is perpendicular to the central axis of the aperture of the central crimped portion.

9. The loading unit assembly of claim 7 , wherein a central longitudinal axis of each of the first and second recesses is parallel to the central axis of the aperture of the central crimped portion.

10. A loading unit for use with a surgical suturing apparatus, the loading unit comprising:

a body portion defining an alignment recess;

a plurality of tabs extending from the body portion and adjacent the alignment recess, the alignment recess and the plurality of tabs configured to slidably receive an elongate shaft assembly of a surgical suturing apparatus; and

a support structure disposed on the body portion and configured for releasably securing a surgical needle, the support structure including:

a first finger;

a second finger adjacent to the first finger, the first and second fingers defining a first channel therebetween; and

a third finger defining a seat portion and a back portion, the seat and back portions of the third finger in facing relation with the first and second fingers, wherein the third finger and the first and second fingers define a second channel therebetween, wherein each of the first and second fingers includes a tooth on a surface thereof, each tooth of the first and second fingers being in facing relation with the seat portion and the back portion of the third finger.

11. The loading unit of claim 10 further comprising a central stopping member disposed on the body portion between the support structure and the alignment recess, the central stopping member configured to limit advancement of the elongate shaft assembly and a pair of jaw members of the surgical suturing apparatus.

12. A loading unit assembly for use with a surgical suturing apparatus comprising:

a surgical needle defining first and second grooves on an outer surface thereof; and

a support structure including:

a first finger;

a second finger adjacent to the first finger, the first and second fingers defining a first channel therebetween, each of the first and second fingers includes a tooth on an outer surface thereof; and

a third finger defining a seat portion and a back portion, the seat and back portions in facing relation with the first and second fingers, wherein the third finger and the first and second fingers define a second channel therebetween, the support structure configured to releasably secure the surgical needle loaded in the second channel and in abutment with at least the seat portion, wherein each tooth of the first and second fingers is selectively receivable in the first or second groove of the surgical needle.

13. The loading unit assembly of claim 12 , wherein the surgical needle includes a central crimped portion defining an aperture therethrough, the central crimped portion of the surgical needle disposed on the seat portion of the third finger such that a longitudinal axis of the surgical needle is oriented orthogonally relative to a longitudinal axis of the support structure.

14. The loading unit assembly of claim 13 , wherein a central longitudinal axis of the first and second grooves is oriented at an angle relative to a central axis of the aperture of the central crimped portion.

15. The loading unit of claim 14 , wherein the angle is from about 5 degrees to about 40 degrees.

16. The loading unit assembly of claim 14 , wherein the surgical needle further defines first and second recesses on the outer surface thereof.

17. The loading unit assembly of claim 16 , wherein a central longitudinal axis of each of the first and second recesses is perpendicular to the central axis of the aperture of the central crimped portion.