#$%^&*AU2015252008A120160623.pdf#####LOADING UNIT ATTACHMENT BAND FOR SURGICAL STAPLING INSTRUMENT ABSTRACT A loading unit and retention band assembly comprising: a shell (20) having a proximal end portion (22) defining an engagement window (24), the proximal end portion (22) including an annular surface (23); and a retention band (40) disposed radially about the annular surface (23) of the proximal end portion (22), the retention band (4) including a resilient body (45) having a first end (42) and a second end (46), the first end (42) including a resilient lock (44) configured to extend through the engagement window (24) of the proximal end portion (22) of the shell (2), the resilient lock (44)being dimensioned releasably engage a surgical instrument.4/6 20 8 23 26 462 4 9 FIG. 7 23 29 23 G46 28 49 FIG 8 I.