Surgical staples comprising hardness variations for improved fastening of tissues
A surgical staple cartridge is disclosed comprising a plurality of staples removably stored within the surgical staple cartridge. The staples comprise staple legs which extend from a staple base portion. The staple legs comprise staple tips configured to pierce tissue and contact a corresponding forming pocket of an anvil of surgical stapling instrument. The staples further comprise zones having different hardnesses.
1. A surgical staple, comprising:
(a) a bioabsorbable frame including a crown and a pair of legs integrally connected with the crown; and
(b) a bioabsorbable coating disposed on the bioabsorbable frame such that a first portion of each leg includes the bioabsorbable coating and a second portion of each leg omits the bioabsorbable coating, wherein the bioabsorbable coating is configured to delay bioabsorption of the bioabsorbable frame when the surgical staple is implanted in tissue.
2. The surgical staple of claim 1 , wherein each of the legs terminates at a tip, wherein the bioabsorbable coating is absent on the tips and is present on a remainder of the bioabsorbable frame.
3. The surgical staple of claim 1 , wherein the bioabsorbable coating comprises a bioabsorbable polymer.
4. The surgical staple of claim 3 , wherein the bioabsorbable polymer comprises at least one of polylactic acid (PLA) or polyglycolic acid (PGA).
5. The surgical staple of claim 1 , further comprising an anti-microbial material.
6. The surgical staple of claim 5 , wherein the anti-microbial material comprises triclosan.
7. The surgical staple of claim 1 , wherein the bioabsorbable frame comprises a magnesium alloy.
8. A surgical staple assembly, comprising:
(a) the surgical staple of claim 1 , wherein each of the legs terminates at a tip; and
(b) an adjunct through which the legs of the staple are configured to extend when the staple is applied to tissue, wherein the adjunct is configured to reside between the crown and the tips of the staple when the legs are formed in the tissue.
9. The surgical staple assembly of claim 8 , wherein the adjunct is at least one of resilient or bioabsorbable.
10. The surgical staple assembly of claim 8 , further comprising an anti-microbial coating disposed on at least one of the adjunct or the surgical staple.
11. A surgical staple cartridge, comprising:
(a) a cartridge body including a deck and a plurality of staple cavities defined in the deck; and
(b) a plurality of staples disposed in the staple cavities, wherein the plurality of staples includes the surgical staple of claim 1 .
12. The surgical staple cartridge of claim 11 , in combination with an adjunct, wherein the legs of the surgical staple are configured to extend through the adjunct when the surgical staple is applied to tissue, wherein the adjunct is configured to reside between the crown and the tips of the surgical staple when the legs of the surgical staple are formed in the tissue.
13. A surgical staple, comprising:
(a) a crown;
(b) a pair of legs integrally connected with and extending away from the crown, wherein the crown and the legs are bioabsorbable; and
(c) a bioabsorbable coating disposed on the legs such that a first portion of each leg includes the bioabsorbable coating and a second portion of each leg omits the bioabsorbable coating, wherein the bioabsorbable coating is configured to delay bioabsorption of the legs when the surgical staple is implanted in tissue.
14. The surgical staple of claim 13 , wherein the crown and the legs define a bioabsorbable frame that comprises a magnesium alloy.
15. The surgical staple of claim 13 , wherein each of the legs terminates at a tip, wherein the bioabsorbable coating is omitted from the tips.
16. The surgical staple of claim 13 , wherein the bioabsorbable coating comprises at least one of polylactic acid (PLA) or polyglycolic acid (PGA).
17. The surgical staple of claim 13 , further comprising an anti-microbial coating.
18. A surgical staple assembly, comprising:
(a) a staple including:
(i) a crown,
(ii) a pair of legs integrally connected with the crown, wherein each of the legs terminates at a tip, and
(iii) a bioabsorbable coating disposed on the legs such that a first portion of each leg includes the bioabsorbable coating and a second portion of each leg omits the bioabsorbable coating; and
(b) an adjunct through which the legs of the staple are configured to extend when the staple is applied to tissue, wherein the adjunct is configured to reside between the crown and the tips of the staple when the legs are formed in the tissue.
19. The surgical staple assembly of claim 18 , wherein the crown and the legs define a bioabsorbable frame of the staple, wherein the bioabsorbable coating is configured to delay bioabsorption of the bioabsorbable frame when the staple is implanted in tissue.
20. The surgical staple assembly of claim 19 , wherein the bioabsorbable frame comprises a magnesium alloy, wherein the bioabsorbable coating comprises at least one of polylactic acid (PLA) or polyglycolic acid (PGA).