Abstract: An apparatus includes a body, a shaft, an end effector, and a lockout assembly. The end effector includes a cartridge jaw, an anvil jaw, a knife and a distal retainer. The lockout assembly includes a sensor and a lockout. The lockout is vertically constrained. The sensor is associated with a first pivot and a second pivot. The first pivot is grounded with respect to a channel. The second pivot is a moving pivot. The lockout assembly includes an unlocked and locked position. The second pivot is positioned above the first pivot when the lockout assembly is in the unlocked position with the lockout providing no interference with respect to actuation of the knife. The first pivot and the second pivot are positioned at substantially the same height when the lockout assembly is in the locked position.

Abstract: An apparatus (1000) includes a shaft (600A) and an end effector (1200, 2200) configured to receive a staple cartridge (210) having staples and a sled (1210a, 2210a). The end effector includes a knife (1206, 2206), an anvil jaw (204, 1204), a cartridge jaw (1208, 2208), and a blocker (1255, 2255) coupled to the cartridge jaw. The blocker is vertically translatable relative to the cartridge jaw and the knife between a raised and lowered positions. The blocker in the raised position is configured to directly contact and thereby inhibit distal advancement of the knife, and the blocker in the lowered position is configured to permit distal advancement of the. The blocker is configured to assume the raised position in the absence of an unspent staple cartridge and the lowered position in the presence of an unspent staple cartridge.

Abstract: An apparatus includes a body (700), a shaft (600A), an end effector (200), and a lockout assembly (1100). The end effector includes a cartridge jaw (202), an anvil jaw (204), a knife (206) and a distal retainer (1110). The lockout assembly includes a sensor (1120) and a lockout (1140). The lockout is vertically constrained. The sensor is associated with a first pivot (1124) and a second pivot. The first pivot is grounded with respect to a channel (1114). The second pivot is a moving pivot. The lockout assembly includes an unlocked and locked position. The second pivot is positioned above the first pivot when the lockout assembly is in the unlocked position with the lockout providing no interference with respect to actuation of the knife. The first pivot and the second pivot are positioned at substantially the same height when the lockout assembly is in the locked position.

Abstract: An apparatus includes a body having an interior space sized and shaped to receive a surgical stapler end effector in an open state in combination with an adjunct applicator that includes an adjunct. The apparatus further includes a closure member movably coupled with the body. The closure member is actuatable to close the surgical stapler end effector onto the adjunct applicator so that the adjunct is applied to a stapling surface of the surgical stapler end effector.

Abstract: An apparatus includes a body having an interior space sized and shaped to receive a surgical stapler end effector in an open state in combination with an adjunct applicator that includes an adjunct. The apparatus further includes a closure member movably coupled with the body. The closure member is actuatable to close the surgical stapler end effector onto the adjunct applicator so that the adjunct is applied to a stapling surface of the surgical stapler end effector.