Surgical stapler buttress assembly with adhesion to wet end effector

A buttress assembly that is configured to temporarily adhere to a wet surgical stapler end effector, the buttress assembly comprising:

• (a) a buttress body comprising a collagen matrix;
• and
• (b) a humidity tolerant adhesive material disposed on at least one side of the buttress body, wherein the humidity tolerant adhesive material comprises a de-wetting agent configured to absorb moisture,
• wherein the humidity tolerant adhesive material is configured to secure the buttress body to a stapling surface of the wet surgical stapler end effector for at least five minutes in an environment of 100% relative humidity at about 37° C. after the humidity tolerant adhesive material has been exposed to a relative humidity of from about 20% to about 60% for up to one hour at between about 20° C. and about 22° C.

A buttress assembly that is configured to temporarily adhere to a wet surgical stapler end effector, the buttress assembly comprising:

• (a) a buttress body comprising a collagen matrix;
• (b) a humidity tolerant adhesive material;
• and
• (c) a hydrophobic layer disposed between the buttress body and the humidity tolerant adhesive material,
• wherein the humidity tolerant adhesive material comprises:
• polymers selected from the group of:
• (A) bioabsorbable polymers, or
• (B) polymers having a molecular weight of less than about 30,000 kDa;
• and
• (ii) sorbents selected from the group of:
• cellulose, cellulose derivatives, starch, starch derivates, natural gums, chitosan, pectin, gelatin and combinations thereof.