US 11,850,415 B2
Blood pump
Ehud Schwammenthal, Ra'anana (IL); Yosi Tuval, Even Yehuda (IL); and Daniel Glozman, Kfar Yona (IL)
Assigned to Magenta Medical Ltd., Kadima (IL)
Filed by Magenta Medical Ltd., Kadima (IL)
Filed on Apr. 4, 2023, as Appl. No. 18/130,534.
Application 18/130,534 is a division of application No. 16/859,492, filed on Apr. 27, 2020, granted, now 11,648,391.
Application 16/859,492 is a continuation of application No. 15/888,771, filed on Feb. 5, 2018, granted, now 11,484,701, issued on Nov. 1, 2022.
Application 15/888,771 is a continuation of application No. 15/312,034, granted, now 10,583,231, issued on Mar. 10, 2020, previously published as PCT/IL2015/050532, filed on May 19, 2015.
Application 15/312,034 is a continuation in part of application No. PCT/IL2014/050289, filed on Mar. 13, 2014.
Claims priority of provisional application 62/000,192, filed on May 19, 2014.
Claims priority of provisional application 61/914,475, filed on Dec. 11, 2013.
Claims priority of provisional application 61/779,803, filed on Mar. 13, 2013.
Prior Publication US 2023/0233840 A1, Jul. 27, 2023
Int. Cl. A61M 60/833 (2021.01); A61M 60/857 (2021.01); A61M 60/216 (2021.01); A61M 60/205 (2021.01); A61M 60/135 (2021.01); A61M 60/422 (2021.01); A61B 17/12 (2006.01)
CPC A61M 60/833 (2021.01) [A61B 17/12136 (2013.01); A61B 17/12168 (2013.01); A61M 60/135 (2021.01); A61M 60/205 (2021.01); A61M 60/216 (2021.01); A61M 60/422 (2021.01); A61M 60/857 (2021.01); A61B 2017/12127 (2013.01); A61M 2205/505 (2013.01); A61M 2205/52 (2013.01); A61M 2205/80 (2013.01); A61M 2230/005 (2013.01); A61M 2230/20 (2013.01); A61M 2230/30 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a blood pump comprising:
a catheter;
a first impeller disposed on the catheter;
a second impeller disposed on the catheter, proximally to the first impeller;
a series of one or more shafts extending from the motor to the first impeller and from the first impeller to the second impeller; and
a motor configured to be disposed outside a body of a subject and configured to drive the first and second impellers to pump blood of a subject, by the motor imparting rotational motion to the first and second impellers via the one or more shafts when the first and second impellers are in non-radially-constrained configurations,
wherein the blood pump has one or more characteristics selected from the group consisting of: (a) the first and second impellers are shaped differently from each other, when the first and second impellers are in non-radially-constrained configurations, (b) the first and second impellers are sized differently from each other, when the first and second impellers are in non-radially-constrained configurations, and (c) the first and second impellers are driven by the motor to rotate under respective rotation conditions that are different from each other.