US 12,314,067 B2
Valve actuation systems and related methods
Lynn E. Jensen, Syracuse, UT (US); and Philip Scott James, Orinda, CA (US)
Assigned to Fresenius Medical Care Holdings, Inc., Waltham, MA (US)
Filed by Fresenius Medical Care Holdings, Inc., Waltham, MA (US)
Filed on Oct. 6, 2022, as Appl. No. 17/961,211.
Application 17/961,211 is a continuation of application No. 16/519,077, filed on Jul. 23, 2019, granted, now 11,500,400.
Claims priority of provisional application 62/711,873, filed on Jul. 30, 2018.
Prior Publication US 2023/0040549 A1, Feb. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16K 31/04 (2006.01); A61M 1/14 (2006.01); A61M 1/16 (2006.01); A61M 1/26 (2006.01); A61M 1/36 (2006.01); F16K 11/20 (2006.01); G05D 7/06 (2006.01)
CPC G05D 7/0652 (2013.01) [A61M 1/1524 (2022.05); A61M 1/154 (2022.05); A61M 1/155 (2022.05); A61M 1/1561 (2022.05); A61M 1/1565 (2022.05); A61M 1/1656 (2013.01); A61M 1/166 (2014.02); A61M 1/267 (2014.02); A61M 1/3644 (2014.02); F16K 11/20 (2013.01); F16K 31/046 (2013.01); A61M 1/159 (2022.05); A61M 2205/128 (2013.01); A61M 2205/3303 (2013.01); A61M 2205/3317 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/505 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A dialysis machine, comprising:
a housing; and
a drive unit located at least partially within the housing, the drive unit comprising an actuator configured to engage and move a plurality of valves disposed within a fluid cassette to selectively open and close each valve of the plurality of valves; and
a positioning frame located within the housing, the positioning frame disposed adjacent the fluid cassette and along which the drive unit can be moved in three dimensions to align the actuator with a selected valve of the plurality of valves.