#$%^&*AU2020213414A120200827.pdf#####Abstract A self-sealing cannula system, comprising: a first cannula having a distal end and a proximal end； 5 a flexible, self-sealing closure attached to said first cannula approximately at said distal end of said first cannula, said closure comprising a hollow, elongate structure defining an open interior, wherein said first cannula is removably attached to said interior of said closure； and a second cannula positioned within said first cannula and extendable from said 10 distal end of said first cannula； wherein said self-sealing closure is expandable from a compressed state, in which an outer wall of said self-sealing closure defines an elongate, hollow cylinder, into an uncompressed state, in which an outer wall of said closure defines an upper disc, a lower disc, and a generally cylindrical wall extending between said upper disc and 15 said lower disc. 13922491_1 (GHMatters) P42777AU01 7/08/20
