US 12,220,329 B2
Pump system
Hafsteinn Jonasson, Reykjavik (IS); Dadi Granz, Reykjavik (IS); Marco Steinberg, Reykjavik (IS); and David Sandahl, Reykjavik (IS)
Assigned to Ossur Iceland ehf, Reykjavik (IS)
Filed by Ossur Iceland ehf, Reykjavik (IS)
Filed on May 18, 2022, as Appl. No. 17/747,701.
Application 17/747,701 is a continuation of application No. 16/544,400, filed on Aug. 19, 2019, granted, now 11,357,647.
Application 16/544,400 is a continuation of application No. 15/236,815, filed on Aug. 15, 2016, granted, now 10,413,429, issued on Sep. 17, 2019.
Claims priority of provisional application 62/221,752, filed on Sep. 22, 2015.
Claims priority of provisional application 62/210,561, filed on Aug. 27, 2015.
Prior Publication US 2022/0273467 A1, Sep. 1, 2022
Int. Cl. A61F 2/66 (2006.01); A61F 2/60 (2006.01); A61F 2/74 (2006.01); A61F 2/80 (2006.01); A61F 2/50 (2006.01); A61F 2/68 (2006.01)
CPC A61F 2/66 (2013.01) [A61F 2/602 (2013.01); A61F 2/6607 (2013.01); A61F 2002/5009 (2013.01); A61F 2002/501 (2013.01); A61F 2002/5021 (2013.01); A61F 2002/5079 (2013.01); A61F 2002/5084 (2013.01); A61F 2002/6614 (2013.01); A61F 2002/6657 (2013.01); A61F 2002/6664 (2013.01); A61F 2002/6671 (2013.01); A61F 2002/6678 (2013.01); A61F 2002/6863 (2013.01); A61F 2/74 (2021.08); A61F 2/742 (2021.08); A61F 2/748 (2021.08); A61F 2002/805 (2013.01); A61F 2002/807 (2013.01)] 16 Claims
OG exemplary drawing
 
12. A prosthetic system comprising:
a prosthetic foot including an upper foot element having a concave-forward facing portion and a foot portion extending forwardly therefrom, an intermediate foot element disposed below the upper foot element and having a front portion coupled to the foot portion of the upper foot element, and a lower foot element disposed below the intermediate foot element, wherein the upper foot element and the intermediate foot element are movable relative to one another upon movement of the prosthetic foot; and
a pump system coupled to the prosthetic foot and extending over the intermediate foot element, the pump system comprising:
a pump mechanism including a housing defining a cavity and an upper end of a membrane situated in the cavity, the pump mechanism being movable between an original configuration in which a volume of a fluid chamber defined between the membrane and a bottom of the cavity is zero or near-zero, and an expanded configuration in which the volume of the fluid chamber is increased; and
an arm member extending from a rear portion of the housing of the pump mechanism and biasing against an upper surface of the intermediate foot element, the arm member arranged to move the membrane relative to the housing to actuate the pump mechanism toward at least the expanded configuration upon movement of the intermediate foot element relative to the upper foot element;
a securing member having a first end secured to the upper foot element, and a second end securing to the housing, wherein a lower end of the membrane secures to the securing member;
wherein a front portion of the housing secures to a front portion of the securing member and the rear portion of housing at the arm member is arranged to articulate relative to the securing member;
wherein the securing member defines a first hole and the upper foot element defines a second hole, the arm member extends downwardly toward the intermediate foot element and through the first and second holes.