#$%^&*AU2019201962A120191024.pdf#####CANNULA ASSEMBLY WITH COLLAPSIBLE FIXATION DEVICE ABSTRACT A cannula assembly (10) comprising: a housing (12) defining a receptacle； a seal assembly (20) positioned within the receptacle, the seal assembly (20) being adapted to form a seal about a surgical instrument inserted through the housing (12)； a cannula shaft (14) extending from the housing (12) and defining a channel, the channel defining a longitudinal axis and having a proximal portion that communicates with the receptacle and an open distal end； and a sleeve (102) having a proximal portion movably positioned about the cannula shaft (14) and a distal portion axially fixed to a distal portion of the cannula shaft (14), the sleeve (102) including a deformable mesh material having a deployable anchor member and a thin cover that extends from the proximal portion of the sleeve to a lower portion of the sleeve (102), leaving the deployable anchor member unrestrained by the cover； a frustoconical end cap (106) attached to the cannula shaft (14) at the distal end thereof so as to cover the distal portion of the sleeve (102), the end cap (106) including one or more holes for receiving an adhesive material； wherein movement of the proximal portion of the sleeve (102) towards the distal portion of the sleeve (102) causes the anchor member of the sleeve (102) to move radially outward away from the longitudinal axis of the cannula shaft, the anchor member being formed of a material that is configured collapse against the cannula shaft when a force is applied to the cannula assembly (10) to facilitate removal of the cannula assembly (10) from within a body cavity of a patient.1/6 3, 4, 4A 10 34 12 03 24 2 14 24a 104 112a 112 122 120 118 116 16 60a 60 102 100 172 FIG. 1 " 4
