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Medicant eluting adjuncts and methods of using medicant eluting adjuncts

  • US 10,569,071 B2
  • Filed: 08/31/2015
  • Issued: 02/25/2020
  • Est. Priority Date: 08/31/2015
  • Status: Active Grant
First Claim
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1. A surgical method, comprising:

  • positioning an end effector of a surgical stapler adjacent tissue of a patient, the end effector having disposed therein a cartridge body including a plurality of staples, and the end effector having releasably disposed thereon a biocompatible adjunct material, the adjunct material having an effective amount of at least one medicant disposed within and releasable from the adjunct material, the adjunct material having at least a first layer and a second layer, the first layer including at least first and second distinct portions disposed along at least an outer surface of the first layer, each of the first and second distinct portions of the first layer having a distinct degradation rate from each of the other first and second distinct portion of the first layer, each of the first and second distinct portions being arranged on the outer surface such that a degradation rate of the first layer varies along at least one of a total length and a total width of the outer surface, the first distinct portion being disposed along only a first side of the outer surface of the first layer, the second distinct portion being disposed along only a second side of the outer surface of the first layer, the second layer being disposed entirely within the first layer; and

    actuating the stapler to eject the staples out of openings in the cartridge body, thereby stapling the adjunct material to the tissue and releasing the adjunct material from the cartridge body, the at least one medicant being releasable from the adjunct material to the tissue according to at least a predetermined temporal pattern that is defined by the degradation rates of the at least first and second distinct portions of the first layer and a different degradation rate of the second layer;

    wherein the first distinct portion has thin fibers configured to encourage regrowth, and the second distinct portion has thicker fibers relative to the thin fibers of the first distinct portion configured to discourage regrowth.

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