US 12,109,404 B2
Blood pump for mechanical circulatory support for Fontan patients
Marcus Granegger, Zürich (CH); Michael Hübler, Herrliberg (CH); Bente Thamsen, Zürich (CH); and Martin Schweiger, Stallikon (CH)
Assigned to UNIVERSITÄT ZÜRICH, Zurich (CH)
Appl. No. 16/973,832
Filed by UNIVERSITÄT ZÜRICH, Zürich (CH)
PCT Filed Jun. 11, 2019, PCT No. PCT/EP2019/065211
§ 371(c)(1), (2) Date Dec. 10, 2020,
PCT Pub. No. WO2019/238677, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 18176928 (EP), filed on Jun. 11, 2018.
Prior Publication US 2021/0268262 A1, Sep. 2, 2021
Int. Cl. A61M 60/00 (2021.01); A61M 60/148 (2021.01); A61M 60/226 (2021.01); A61M 60/35 (2021.01); A61M 60/422 (2021.01); A61M 60/515 (2021.01); A61M 60/531 (2021.01); A61M 60/538 (2021.01); A61M 60/806 (2021.01); A61M 60/81 (2021.01); A61M 60/82 (2021.01); A61M 60/825 (2021.01)
CPC A61M 60/515 (2021.01) [A61M 60/148 (2021.01); A61M 60/226 (2021.01); A61M 60/35 (2021.01); A61M 60/422 (2021.01); A61M 60/531 (2021.01); A61M 60/538 (2021.01); A61M 60/806 (2021.01); A61M 60/81 (2021.01); A61M 60/82 (2021.01); A61M 60/825 (2021.01); A61M 2205/04 (2013.01); A61M 2205/3334 (2013.01); A61M 2250/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A radial blood pump (1), for supporting a blood flow (106) in a human or animal heart (205) comprising at least the following components:
A first and a second inlet channel (41, 42),
A first outlet channel (51, 52),
A first electric motor (71) comprising a first stator (77) and a first internal rotor (75), wherein the first electric motor (71) is configured to drive
An impeller (2, 2b) arranged at an intersection of the first with the second inlet channel (41, 42), wherein the impeller (2, 2b) is connected to the first internal rotor (75) and wherein the impeller (2, 2b) comprises a merging portion (22) arranged at the intersection, where a merging of a first blood flow (106) coming from the first inlet channel (41) and a second blood flow (107) coming from the second inlet channel (42) takes place, wherein the impeller (2, 2b) is configured to pump the first and second blood flow (106, 107) from the first and second inlet channel (41, 42) via the merging portion (22) to the first outlet channel (51),
A plurality of blades (20) comprised by the impeller (2, 2b), wherein the blades (20) form blade channels (21) comprised by the merging portion (22), wherein each blade (20) is arranged and configured to pump the first and second blood (106, 107) flow entering through the first and the second inlet channel (41, 42) towards the outlet channel (51), wherein
the blood pump (1) is arranged and configured such that the first blood flow (106) and the second blood flow (107) meet at the merging portion (22), such that a pressure difference between the first and second blood flow (106, 107) is reduced before blood from first and second blood flow (106, 107) is pumped to the first outlet channel (51), wherein the impeller (2b) is a closed double-suction impeller, wherein the impeller (2, 2b) comprises a first and a second shroud (24) at least partially covering the blades (20), and wherein the merging portion (22) comprises two eyes (23), wherein the radial blood pump (1) comprises a straight line fluidic passage between the first and the second inlet channel (41, 42), wherein the straight line fluidic passage extends through the eyes (23) of the closed double suction impeller (2, 2b).