Back to results
US 2025/0027499 A1Published application
Device to assist the performance of a heart
AssigneeMiracor Medical SA
InventorWerner Mohl
Life of this patent
Estimating the term…
Abstract
A device to assist the performance of a heart with at least one pump that is formed as a rotary pump and magnetically driven.
Claims24
A heart assist pump device configured to be positioned within a patient's body and comprising:
- a blood flow path comprising:
- an inflow tube with a distal suction end configured to be inserted into a ventricle of a heart, wherein at least a portion of the inflow tube is substantially linear and comprises a central axis;
- a first chamber comprising one or more walls and a substantially planar bottom wall having an inner surface that is located at a position that is axially opposite of the at least a portion of the inflow tube comprising the central axis, the first chamber located downstream of, and in fluid communication with, the inflow tube, wherein the first chamber is axially aligned with the central axis;
- and
- a blood outflow path located downstream of the inflow tube and in fluid communication with the first chamber and with a blood vessel of the body, and configured to direct blood in at least one direction that is not axially aligned with the central axis;
- a magnetic rotor assembly comprising a rotor and a first magnetic device located within the first chamber;
- a second magnetic device associated with, and sealed from, the magnetic rotor assembly and configured to rotate the magnetic rotor assembly by a magneto coupling with the magnetic rotor assembly,
- wherein the magnetic rotor assembly and the second magnetic device are axially aligned with the central axis and wherein an axial and/or a radial position of the magnetic rotor assembly is magnetically controlled relative to the second magnetic device;
- a gap between a side wall of the first chamber and the magnetic rotor assembly, the gap axially aligned with the central axis and configured for blood flow therethrough,
- wherein the gap comprises an inner diameter that is smaller than an inner diameter of the inflow tube;
- and
- guide surfaces on the magnetic rotor assembly in fluid communication with the blood flowing through the defined blood flow path, the guide surfaces configured to produce centrifugal components within the blood during rotation of the magnetic rotor assembly,
- wherein at least the guide surfaces of the magnetic rotor assembly are configured to drive the blood flow along the blood outflow path.
10 more elements
A method for assisting the blood circulation of a heart in a body, comprising:
- providing a heart assist device comprising:
- a blood flow path comprising:
- an inflow tube with a distal suction end configured to be inserted into a left ventricle of a heart, wherein at least a portion of the inflow tube is substantially linear and comprises a central axis;
- a first chamber comprising one or more walls and a substantially planar bottom wall having an inner surface that is located at a position that is axially opposite of the at least a portion of the inflow tube comprising the central axis, the first chamber located downstream of, and in fluid communication with, the inflow tube, wherein the first chamber is axially aligned with the central axis;
- and
- a blood outflow path located downstream of the inflow tube and in fluid communication with the first chamber and with an aorta of the body, and configured to direct blood in at least one direction that is not axially aligned with the central axis;
- a magnetic rotor assembly comprising a rotor and a first magnetic device located within the first chamber;
- a second magnetic device associated with, and sealed from, the magnetic rotor assembly and configured to rotate the magnetic rotor assembly by a magneto coupling with the magnetic rotor assembly,
- wherein the magnetic rotor assembly and the second magnetic device are axially aligned with the central axis;
- a gap between a side wall of the first chamber and the magnetic rotor assembly, the gap axially aligned with the central axis and configured for blood flow therethrough,
- wherein the gap comprises an inner diameter that is smaller than an inner diameter of the inflow tube;
- guide surfaces on the magnetic rotor assembly in fluid communication with the blood flowing through the defined blood flow path, the guide surfaces configured to produce centrifugal components within the blood during rotation of the magnetic rotor assembly,
- wherein the guide surfaces are spaced axially away from the inner surface of the substantially planar bottom wall,
- wherein at least the guide surfaces of the magnetic rotor assembly are configured to drive the blood flow along the blood outflow path;
- positioning the heart assist pump device within the body;
- inserting the suction end of the inflow tube into the left ventricle;
- activating the heart assist pump device;
- rotating the magnetic rotor assembly via the magneto coupling;
- magnetically controlling an axial position and/or a radial position of the magnetic rotor assembly relative to the second magnetic device;
- suctioning the blood from the ventricle and into the inflow tube;
- driving the blood through outflow port;
- and
- returning the blood to the aorta.
20 more elements
Dependencies are inferred from the claim text.