Search

EP-4312810-B1 - SURGICAL STAPLE CARTRIDGE

EP4312810B1EP 4312810 B1EP4312810 B1EP 4312810B1EP-4312810-B1

Inventors

  • DIAZ-CHIOSA, Olesea
  • KNAPP, Robert H.
  • ESCHBACH, Matthew S.
  • Chowaniec, Matthew J.
  • MARINELLI, Johana M.

Dates

Publication Date
20260506
Application Date
20220318

Claims (10)

  1. A surgical staple cartridge (40) comprising: an annular cartridge body (42) defining a central opening (48) and staple pockets (46), the staple pockets (46) arranged to define inner and outer rings (176, 180) positioned about the central opening (48), the central opening (48) configured to receive a cutting blade; and a plurality of staples (150), each of the plurality of staple pockets (46) receiving one of the plurality of staples (150), wherein at least some of the plurality of staples (150) received in the inner ring (176) of the staple pockets (46) are formed of a first metal having a first anodic index and at least some of the plurality of staples (150) received in the outer ring (180) of the staple pockets (46) are formed of a second metal having a second anodic index, characterised in that the second anodic index is different from the first anodic index, wherein the first anodic index is less than the second anodic index to create a voltaic cell to drive a voltage within tissue to which the plurality of staples (150) are applied to enhance cell migration towards the inner ring (176) closest to the cutting blade.
  2. The surgical staple cartridge (40) of claim 1, wherein the first metal is selected from magnesium and zinc, and the second metal is selected from titanium and copper.
  3. The surgical staple cartridge (40) of claim 1 or claim 2, wherein the first metal is magnesium and the first anodic index is -1.75V and the second metal is titanium and the second anodic index is -0.30V.
  4. The surgical staple cartridge (40) of any one of claims 1 to 3, wherein the staple pockets (46) are arranged to define a middle ring positioned between the inner and outer rings (176, 180), each of the staple pockets (46) of the middle ring receiving one of the staples (150).
  5. The surgical staple cartridge (40) of claim 4, wherein at least some of the staples (150) in the middle ring are formed of the second metal.
  6. The surgical staple cartridge (40) of claim 4, wherein at least some of the staples (150) in the middle ring are formed of the first metal.
  7. A surgical stapling device (40) comprising: an elongate body (42) including an anvil retainer; the staple cartridge (40) according to any of claims 1 to 6; and an anvil assembly supported on the anvil retainer, the anvil assembly being movable in relation to the staple cartridge between advanced and retracted positions to move the stapling device between open and clamped positions.
  8. The stapling device of claim 7, further including a handle assembly, the elongate body (42) supported by and extending distally from the handle assembly.
  9. The stapling device of any one of claims 7 to 8, wherein the anvil assembly is releasably coupled to the anvil retainer.
  10. A surgical staple cartridge (40) according to any one of claims 1 to 6 or a surgical stapling device (10) according to any one of claims 7 to 9, wherein some or all of the staples (150) in rings of staples (150) are coupled together by a wire or other conductive material such that the ring or a portion of the ring of staples (150) forms a single conductor.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of and priority to U.S. Provisional Patent Application No. 63/166,380, filed March 26, 2021. FIELD This disclosure is directed a staple cartridge including spaced rows of staples, and more particularly, to a staple cartridge including spaced rows of staples that are adapted to enhance cell migration toward a wound site. BACKGROUND When a surgical stapling and dissecting device is operated to remove tissue from a patient, a knife of the device is advanced to dissect the tissue along a cut line. This creates a wound that is sealed with rows of staples that are ejected from the device and formed through the tissue along the cut line as the tissue is dissected. The staple rows seal the wound by providing pressure to the cut line to maintain hemostasis. However, staple rows fail when the wound does not heal fast enough to prevent the stapled tissue from losing its integrity due to natural degradation. A continuing need exist in the surgical stapling and dissecting arts for a device that can minimize healing time required for stapled tissue. US2019/046192A1 describes buttress systems and methods for surgical stapling devices and end effectors. SUMMARY The invention is defined by the appended independent claim. Optional features are set out in the dependent claims. One aspect of the disclosure is directed to a staple cartridge including a cartridge body and a plurality of staples. The cartridge body defines a plurality of staple pockets and a central knife slot. The staple pockets are arranged in a plurality of rows on each side of the central knife slot. The plurality of rows includes an inner row and an outer row. Each of the plurality of staple pockets receives one of the plurality of staples. Each of the plurality of staples received in the inner rows of staple pockets is formed of a first metal having a first anodic index and each of the plurality of staples received in the outer rows of staple pockets is formed of a second metal having a second anodic index that is different from the first anodic index. Another aspect of the disclosure is directed to a surgical stapling device including a handle assembly, an elongate body extending distally from the handle assembly, and a staple cartridge including a cartridge body and a plurality of staples. The cartridge body defines a plurality of staple pockets and a central knife slot. The staple pockets are arranged in a plurality of rows on each side of the central knife slot. The plurality of rows includes an inner row and an outer row. Each of the plurality of staple pockets receives one of the plurality of staples. Each of the plurality of staples received in the inner rows of staple pockets is formed of a first metal having a first anodic index and each of the plurality of staples received in the outer rows of staple pockets is formed of a second metal having a second anodic index that is different from the first anodic index. Yet another aspect of the disclosure is directed to a staple cartridge including a cartridge body and a plurality of staples. The cartridge body defines a plurality of staple pockets and a central knife slot. The staple pockets are positioned on each side of the central knife slot and include first staple pockets positioned along the central knife slot and second staple pockets positioned further from the central knife slot. Each of the plurality of staple pockets receives one of the plurality of staples. Each of the plurality of staples received in the first staple pockets is formed of a first metal having a first anodic index and each of the plurality of staples received in the second staple pockets is formed of a second metal having a second anodic index that is different from the first anodic index. Another aspect of the disclosure is directed to a staple cartridge including an annular staple cartridge body and a plurality of staples. The annular cartridge body defines a central opening and staple pockets that are arranged to define inner and outer rings positioned about the central opening. Each of the plurality of staple pockets receives one of the plurality of staples. At least some of the plurality of staples received in the inner ring of the staple pockets are formed of a first metal having a first anodic index and at least some of the plurality of staples received in the outer ring of the staple pockets are formed of a second metal having a second anodic index that is different from the first anodic index. The first and second anodic indexes are selected to create a voltaic cell to drive a voltage within tissue to which the plurality of staples are applied. Yet another aspect of the disclosure is directed to a surgical stapling device including a handle assembly, an elongate body, and a staple cartridge, and an anvil assembly. The elongate body extends distally from the handle assembly and includes an anvil retainer. The staple cartridge includes a cartridge