US 12,409,266 B2
Convergent-divergent drip chamber integrated with floating valve member
Kanjimpuredathil Muralikrishna Menon, Bangalore (IN); Aman Agarwal, Bangalore (IN); Rahul Puthukkad, Bengaluru (IN); and Arjun Murali, Kochi (IN)
Assigned to CAREFUSION 303, INC., San Diego, CA (US)
Filed by CareFusion 303, Inc., San Diego, CA (US)
Filed on Oct. 30, 2020, as Appl. No. 17/085,803.
Prior Publication US 2022/0133983 A1, May 5, 2022
Int. Cl. A61M 5/14 (2006.01); A61M 5/168 (2006.01); A61M 5/40 (2006.01)
CPC A61M 5/1411 (2013.01) [A61M 5/16881 (2013.01); A61M 5/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A drip chamber device, comprising:
a housing having a top end including an inlet, and a bottom end including an outlet disposed downstream of the inlet;
a chamber defined by an inner circumferential surface of the housing, and fluidly connecting the inlet with the outlet, the inner circumferential surface having a sealing ring, disposed distally to the inlet, a first sidewall extending radially outward and distally from the top end of the housing, and a second sidewall extending radially inward and distally from the first sidewall to the bottom end of the housing; and
a valve member disposed in the chamber to move between (i) a closed state where fluid communication between the inlet and the chamber is blocked by engagement of the valve member against the sealing ring, and (ii) an open state where the valve member is spaced apart from the sealing ring in a direction distal to the inlet, based on a level of fluid within the chamber, such that fluid communication between the inlet and the chamber is not blocked.