| 主权项 |
1. An access device for insertion through an opening in tissue, the access device comprising:
a body formed of a foam material, the body having:
a central portion with a proximal end and a distal end;an upper rim located on the proximal end of the central portion; anda lower rim located on the distal end of the central portion,at least one of the upper rim or the lower rim having an oval cross-section relative to a longitudinal axis of the body when the body is in an at-rest state, the at least one of the upper rim or the lower rim defining a major axis and a minor axis, the body transitionable between a compressed condition adapted to facilitate insertion thereof through the opening in the tissue and an uncompressed condition adapted to secure the body within the opening in the tissue in a sealing relation, the at least one of the upper rim or the lower rim defining a slit between the upper and lower rims of the body, wherein the slit extends a substantial length of the at least one of the upper rim or the lower rim along the major axis, the slit extending between proximal and distal ends of the body. |
