US 12,472,334 B2
Systems and methods for treatment of fluid overload
Yaacov Nitzan, Hertzelia (IL); Sagi Raz, Tel-Aviv (IL); Shani Chen, Givatayim (IL); and Or Inbar, Tel-Aviv (IL)
Assigned to White Swell Medical Ltd, Kibbutz Shefayim (IL)
Filed by White Swell Medical Ltd, Kibbutz Shefayim (IL)
Filed on May 27, 2022, as Appl. No. 17/826,326.
Application 17/826,326 is a continuation of application No. 15/870,111, filed on Jan. 12, 2018, granted, now 11,357,959.
Application 15/870,111 is a continuation of application No. 15/799,562, filed on Oct. 31, 2017, granted, now 10,960,189, issued on Mar. 30, 2021.
Claims priority of provisional application 62/445,231, filed on Jan. 11, 2017.
Claims priority of provisional application 62/415,684, filed on Nov. 1, 2016.
Claims priority of provisional application 62/415,964, filed on Nov. 1, 2016.
Prior Publication US 2022/0280761 A1, Sep. 8, 2022
Int. Cl. A61M 27/00 (2006.01); A61B 17/12 (2006.01); A61F 2/00 (2006.01); A61F 2/06 (2013.01); A61M 1/00 (2006.01); A61M 25/10 (2013.01); A61M 60/13 (2021.01); A61M 60/237 (2021.01); A61M 60/414 (2021.01); A61M 60/523 (2021.01); A61M 60/531 (2021.01); A61M 60/585 (2021.01); A61M 60/806 (2021.01); A61M 60/833 (2021.01); A61M 60/865 (2021.01)
CPC A61M 27/002 (2013.01) [A61B 17/12045 (2013.01); A61B 17/12136 (2013.01); A61F 2/00 (2013.01); A61F 2/06 (2013.01); A61M 1/00 (2013.01); A61M 25/10184 (2013.11); A61M 60/13 (2021.01); A61M 60/237 (2021.01); A61M 60/414 (2021.01); A61M 60/523 (2021.01); A61M 60/531 (2021.01); A61M 60/585 (2021.01); A61M 60/806 (2021.01); A61M 60/833 (2021.01); A61M 60/865 (2021.01); A61F 2002/068 (2013.01); A61M 2025/1015 (2013.01); A61M 2025/1022 (2013.01); A61M 2025/1052 (2013.01); A61M 2025/1097 (2013.01); A61M 2202/0405 (2013.01); A61M 2205/3317 (2013.01); A61M 2205/3344 (2013.01); A61M 2205/8206 (2013.01); A61M 2210/12 (2013.01); A61M 2230/30 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of treating a condition, the method comprising:
navigating a catheter system into a vein of a patient, wherein the catheter system comprises:
an impeller assembly comprising an impeller housing with an impeller therein;
a distal restrictor mounted around at least a portion of a proximal end of an exterior surface of the impeller housing, wherein the distal restrictor is positioned at least partially proximal to the impeller and configured to direct fluid from an upstream side of the restrictor to the impeller; and
a proximal restrictor located on the catheter system proximal to the impeller assembly:
implanting the impeller assembly in a segment of a vein downstream of a confluence of a branch vessel with the vein;
placing the proximal restrictor in a second segment of the vein upstream of the confluence; and
operating the impeller assembly and/or the proximal restrictor to create a low pressure region in the branch vessel while allowing fluid to flow from the second segment, past the restrictor balloon, through the impeller assembly, and into the first segment of the vein downstream of the confluence.