US 12,433,974 B2
Breast pump systems and methods
Jenny Teng, Belmont, CA (US); Jason Chamberlain, Campbell, CA (US); Becky Scanlon, Los Altos Hills, CA (US); Elizabeth Ho, Milpitas, CA (US); Marvin Patel, Aptos, CA (US); John Chang, Los Altos, CA (US); and Jens Kuehner-Laguerre, Sunnyvale, CA (US)
Assigned to Willow Innovations, Inc., Mountain View, CA (US)
Filed by WILLOW INNOVATIONS, INC., Mountain View, CA (US)
Filed on Dec. 14, 2022, as Appl. No. 18/080,860.
Application 18/080,860 is a continuation of application No. PCT/US2021/062241, filed on Dec. 7, 2021.
Claims priority of provisional application 63/234,764, filed on Aug. 19, 2021.
Claims priority of provisional application 63/199,086, filed on Dec. 7, 2020.
Prior Publication US 2023/0110029 A1, Apr. 13, 2023
Int. Cl. A61M 1/06 (2006.01)
CPC A61M 1/067 (2021.05) [A61M 1/06935 (2021.05); A61M 1/0697 (2021.05)] 6 Claims
OG exemplary drawing
 
1. A wearable system to pump fluid from a breast, the system comprising:
a flange configured and dimensioned to form a seal with the breast, the flange including a nipple tunnel, the nipple tunnel including an annular angled wall that circumscribes and protrudes from an outer surface of the nipple tunnel;
a lid sized and shaped to receive the flange;
a diaphragm including an opening, the nipple tunnel configured to extend through the opening in the diaphragm;
a first chamber, the first chamber defined by the lid and the diaphragm;
a pump assembly configured to flex the diaphragm;
a volume equalization and diffusing chamber configured to be in fluid communication with the first chamber, the volume equalization and diffusing chamber defined by the lid and the flange, the volume equalization and diffusing chamber is on a same side of the diaphragm as the first chamber, the annular angled wall including a plurality of cut-outs to provide a path to the volume equalization and diffusing chamber from the first chamber; and
a milk collection container assembly configured to receive pumped milk, the milk collection container assembly defining an entirety of a breast shape profile;
wherein the diaphragm functions to create a vacuum within the first chamber and the volume equalization and diffusing chamber conditions the vacuum created within the first chamber, wherein the volume equalization and diffusing chamber is in fluid communication with an interior of the nipple tunnel and the vacuum is applied to the interior of the nipple tunnel from the volume equalization and diffusing chamber.