Surgical stapler buttress assembly with adhesion to wet end effector

A buttress assembly that is sized and configured to temporarily adhere to a surgical staple cartridge, the buttress assembly comprising:

• (a) a compressible buttress body comprising:
• (i) a first surface,
• (ii) a second surface, and
• (iii) an open cell foam layer comprising a plurality of open cells and disposed between the first surface and the second surface;
• (b) a humidity tolerant pressure sensitive adhesive material that is disposed over and coupled with the compressible buttress body, wherein the humidity tolerant pressure sensitive adhesive material comprises polymers selected from at least one of:
• a bioabsorbable polymer, a non-bioabsorbable polymer that is configured to be cleared from a patient's body and combinations thereof;
• and
• (c) an intermediate layer interposed between the compressible buttress body and the pressure sensitive adhesive material, wherein the intermediate layer is configured to at least partially inhibit permeation of the pressure sensitive adhesive material into the plurality of open cells of the compressible buttress body.

A buttress assembly that is sized and configured to temporarily adhere to a surgical staple cartridge, the buttress assembly comprising:

• (a) a compressible buttress body comprising:
• (i) a first surface,
• (ii) a second surface, and
• (iii) a plurality of open cells disposed between the first surface and the second surface;
• (b) a humidity tolerant pressure sensitive adhesive material that is disposed over and coupled with the compressible buttress body, wherein the humidity tolerant pressure sensitive adhesive material comprises polymers selected from:
• polyglycolic acid, one or more polyethylene glycols having a molecular weight of less than about 30,000 kDa and combinations thereof;
• and
• (c) an intermediate layer interposed between the compressible buttress body and the pressure sensitive adhesive material,
• wherein the intermediate layer partially inhibits permeation of the pressure sensitive adhesive material into the plurality of open cells of the compressible buttress body, and
• wherein a portion of the pressure sensitive adhesive material is present inside a portion of the plurality of open cells of the compressible buttress body.