An apparatus comprising: (i) an adaptor comprising: a seal assembly housing, wherein said seal assembly housing comprises a proximal end and a distal end; a channel, wherein the channel defines a longitudinal axis, wherein the channel comprises a proximal end and a distal end, wherein the proximal end of the channel is in fluid communication with the distal end of the seal assembly housing; an interior tapered surface encompassing at least the distal end of the channel, wherein the interior tapered surface comprises a proximal end and a distal end, wherein the proximal end has a larger perimeter than the distal end; an exterior tapered surface, wherein the exterior tapered surface comprises a proximal end and a distal end; and a trocar roof, wherein the trocar roof is defined between the termination of proximal ends of the interior tapered surface and the exterior tapered surface; and (ii) a hollow cannula, wherein the cannula comprises an annular flange, characterized in that: (a) the annular flange has a proximal angled opening and the interior tapered surface comprises elastomeric material, wherein the elastomeric material is configured to provide an interference fit with the proximal angled opening of the cannula; and/or (b) the annular flange has a proximal angled opening and the exterior tapered surface comprises an elastomeric material, wherein the elastomeric material is configured to provide an interference fit with an outer perimeter of the annular flange of the cannula; and/or (c) an elastomeric material is overmolded around the exterior tapered surface, wherein the elastomeric material is configured for interference with the outer perimeter of the annular flange of the cannula. (i) an adaptor comprising: a seal assembly housing, wherein said seal assembly housing comprises a proximal end and a distal end; a channel, wherein the channel defines a longitudinal axis, wherein the channel comprises a proximal end and a distal end, wherein the proximal end of the channel is in fluid communication with the distal end of the seal assembly housing; an interior tapered surface encompassing at least the distal end of the channel, wherein the interior tapered surface comprises a proximal end and a distal end, wherein the proximal end has a larger perimeter than the distal end; an exterior tapered surface, wherein the exterior tapered surface comprises a proximal end and a distal end; and a trocar roof, wherein the trocar roof is defined between the termination of proximal ends of the interior tapered surface and the exterior tapered surface; and a seal assembly housing, wherein said seal assembly housing comprises a proximal end and a distal end; a channel, wherein the channel defines a longitudinal axis, wherein the channel comprises a proximal end and a distal end, wherein the proximal end of the channel is in fluid communication with the distal end of the seal assembly housing; an interior tapered surface encompassing at least the distal end of the channel, wherein the interior tapered surface comprises a proximal end and a distal end, wherein the proximal end has a larger perimeter than the distal end; an exterior tapered surface, wherein the exterior tapered surface comprises a proximal end and a distal end; and a trocar roof, wherein the trocar roof is defined between the termination of proximal ends of the interior tapered surface and the exterior tapered surface; and (ii) a hollow cannula, wherein the cannula comprises an annular flange, characterized in that: (a) the annular flange has a proximal angled opening and the interior tapered surface comprises elastomeric material, wherein the elastomeric material is configured to provide an interference fit with the proximal angled opening of the cannula; and/or (b) the annular flange has a proximal angled opening and the exterior tapered surface comprises an elastomeric material, wherein the elastomeric material is configured to provide an interference fit with an outer perimeter of the annular flange of the cannula; and/or (c) an elastomeric material is overmolded around the exterior tapered surface, wherein the elastomeric material is configured for interference with the outer perimeter of the annular flange of the cannula. (a) the annular flange has a proximal angled opening and the interior tapered surface comprises elastomeric material, wherein the elastomeric material is configured to provide an interference fit with the proximal angled opening of the cannula; and/or (b) the annular flange has a proximal angled opening and the exterior tapered surface comprises an elastomeric material, wherein the elastomeric material is configured to provide an interference fit with an outer perimeter of the annular flange of the cannula; and/or (c) an elastomeric material is overmolded around the exterior tapered surface, wherein the elastomeric material is configured for interference with the outer perimeter of the annular flange of the cannula.