US 12,290,491 B2
Closed system stress resistant membrane
Paul Paia Marici, Piscataway, NJ (US); Shawn Ray Isaacson, Layton, UT (US); Andrew C. Farinella, Oradell, NJ (US); and Mitchell Evan Gatesman, Morrisville, NC (US)
Assigned to Becton Dickinson and Company Limited, Dun Laoghaire (IE)
Filed by Becton Dickinson and Company Limited, Dun Laoghaire (IE)
Filed on Jan. 11, 2018, as Appl. No. 15/868,123.
Claims priority of provisional application 62/445,393, filed on Jan. 12, 2017.
Prior Publication US 2018/0193227 A1, Jul. 12, 2018
Int. Cl. A61J 1/20 (2006.01); A61J 1/14 (2023.01); A61M 5/14 (2006.01); A61M 5/162 (2006.01)
CPC A61J 1/2044 (2015.05) [A61J 1/1406 (2013.01); A61J 1/201 (2015.05); A61J 1/2048 (2015.05); A61J 1/2096 (2013.01); A61M 5/1413 (2013.01); A61J 1/20 (2013.01); A61M 5/162 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A membrane for sealing an open passageway in connection with a closed system transfer device, the closed system transfer device comprising a distal end and a proximal end connected by the passageway, the membrane comprising:
a body having a proximal portion opposite a distal portion along a central axis, the proximal portion comprising a planar portion extending substantially perpendicular with respect to the central axis, the planar portion having an edge that transitions to a sidewall extending substantially parallel with the central axis, the sidewall being joined with a proximal surface of the distal portion, wherein the planar portion has a diameter defined by the sidewall and the planar portion comprises one of a planar surface extending across the diameter and a convex surface having an apex aligned with the central axis;
a skirt extending radially outward from the distal portion such that a lip is formed at a transition between the proximal portion and the distal portion, the lip comprising a planar surface continuously extending from the sidewall of the proximal portion to an outer edge of the skirt, the lip defining a proximal engagement surface configured for engagement with a seat lip, the skirt having a distal engagement surface, wherein the distal engagement surface is oppositely disposed from the proximal engagement surface at a distalmost end of the skirt relative to a vertical axis extending through the body, the distalmost end of the skirt of the distal engagement surface configured for engagement with a membrane seat of the closed system transfer device to retain the membrane in place to seal the open passageway and prevent axial movement of the membrane into the open passageway;
at least one well recessed in the distal portion and extending from a distal end of the distal portion in a proximal direction, thereby forming a channel within the distal portion, the channel having an open first end, a closed second end, and a pair of sidewalls extending between the open first end and the closed second end, wherein the distalmost end of the skirt is defined by the channel and the outer edge of the skirt such that one of the pair of sidewalls comprises the skirt, and wherein the channel is configured to absorb deformation of a central portion of the body, wherein the second end of the channel is rounded and the pair of sidewalls are curved such that a width W between the sidewalls changes in a direction from the first end toward the second end or wherein the pair of sidewalls comprises a first sidewall and a second sidewall with the first sidewall extending in a direction substantially parallel to a direction of the central axis and the second sidewall extending at an angle relative to the first sidewall such that the second sidewall tapers away from the central axis in a distal-to-proximal direction; and
at least one slit extending through at least a portion of the body in a direction of a plane aligned along or parallel to the central axis.