US 11,904,131 B2
Needleless connector having check valve with concave flow surface
Raymond P. Feith, Chino Hills, CA (US); Randy Kipp, Upland, CA (US); and Adel Shams, Fullerton, CA (US)
Assigned to CareFusion 303, Inc., San Diego, CA (US)
Filed by CareFusion 303, Inc., San Diego, CA (US)
Filed on Jan. 16, 2020, as Appl. No. 16/745,220.
Prior Publication US 2021/0220633 A1, Jul. 22, 2021
Int. Cl. A61M 39/26 (2006.01); A61M 39/10 (2006.01); A61M 39/14 (2006.01); A61M 39/00 (2006.01); A61M 39/24 (2006.01); A61J 1/14 (2023.01); A61J 1/20 (2006.01)
CPC A61M 39/26 (2013.01) [A61M 39/10 (2013.01); A61M 39/14 (2013.01); A61J 1/1412 (2013.01); A61J 1/2037 (2015.05); A61M 2039/0009 (2013.01); A61M 2039/242 (2013.01); A61M 2039/2406 (2013.01); A61M 2039/2433 (2013.01); A61M 2039/2446 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A needleless connector, comprising:
a housing having a proximal end defining an inlet port of the housing, a distal end including a base defining an outlet port of the housing, and an inner surface defining an internal cavity extending between the inlet and outlet ports; and
a compressible valve reciprocally disposed within the internal cavity and configured to contact at least a portion of the inner surface, the compressible valve comprising a head portion and a compressible body portion extending distally from the head portion, wherein:
in a closed state of the compressible valve, a top section of the head portion of the compressible valve has a planar shape configured to contact and seal against the inner surface of the housing; and
in an open state, where the compressible valve is subject to an axial force:
the top section of the head portion is lodged between two pinch points thereof between opposing walls of an inwardly angled portion of the inner surface; and
the top section of the head portion has a non-planar shape defining a fluid path extending at least partially between opposing walls on an outwardly angled portion of the inner surface.