Compressible adjunct for surgical stapler

An adjunct configured for use with a surgical stapler end effector, comprising:

• (a) an adjunct body including first and second planar body portions, wherein the first planar body portion is configured to overlie and directly contact a stapling surface of a surgical stapler end effector, wherein the second planar body portion is configured to directly contact tissue, wherein the adjunct body defines a longitudinal axis;
• and
• (b) a plurality of discrete compressible structures, wherein each of the discrete compressible structures is directly coupled with the first and second planar bodies, wherein the discrete compressible structures are positioned within a first plane, wherein the first plane extends parallel to the longitudinal axis and intersects the first and second planar bodies, wherein each discrete compressible structure is configured to receive a leg of a staple,
• wherein a discrete compressible structure of the plurality of discrete compressible structures includes a first opening configured to receive a leg of a first staple and a second opening configured to receive a leg of a second staple,
• wherein in response to closure of the surgical stapler end effector, each discrete compressible structure is configured to resiliently compress within the first plane without deforming in a second plane that extends perpendicularly to the first plane and the longitudinal axis.

An adjunct configured for use with a surgical stapler end effector, comprising:

• (a) an adjunct body including upper and lower panels, wherein the adjunct body defines a longitudinal central axis, wherein the lower panel is configured to overlie and directly contact a stapling surface of a surgical stapler end effector;
• (b) a first row of resiliently compressible structures positioned on a first side of the longitudinal central axis, wherein each of the resiliently compressible structures is directly coupled to each of the upper and lower panels without being directly coupled to any of the immediately adjacent resiliently compressible members, wherein each of the resiliently compressible structures includes a length extending parallel to the longitudinal central axis and a width extending non-parallel to the longitudinal central axis, wherein the length is greater than the width;
• and
• (c) a second row of resiliently compressible structures positioned on the first side of the longitudinal central axis and spaced apart from the first row of resiliently compressible structures, wherein the second row is directly coupled to the upper and lower panels and is positioned parallel and adjacent to the first row of resiliently compressible structures,
• wherein the first row of resiliently compressible structures includes a first resiliently compressible structure and the second row of resiliently compressible structures includes a second resiliently compressible structure, wherein the second resiliently compressible structure is staggered longitudinally relative to the first resiliently compressible structure so that the first resiliently compressible structure does not align with the second resiliently compressible structure in a direction transverse to the longitudinal central axis,
• wherein in response to closure of the surgical stapler end effector, each resiliently compressible structure is configured to expand in a longitudinal direction parallel to the longitudinal central axis without deforming in a lateral direction perpendicular to the longitudinal central axis.