Intracardiac pump device
AssigneeImpella Cardiotechnik Aktiengesellschaft
InventorThorsten Siess
Life of this patent
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Abstract
The pump device comprises a first pump (10a) that may have its intake side inserted into the left ventricle (42) of the heart, while the delivery side is located in the aorta (40), and a second pump (10b) having its intake side arranged in the right atrium (43), whereas its delivery side is in the pulmonary artery (47). A common control unit drives both pumps in mutual dependance, the first pump (10a) taking the lead function, whereas the second pump (10b) pumps only about 90% of the volume flow of the first pump (10a). Pressure sensors at the pumps serve to determine the differential pressure between the intake side and the delivery side of a pump and to determine the volume flow. Both pumps are inserted into the heart without having to open the ventricles.
Claims13
An intracardiac pump device with two pumps (10a, 10b) to be placed in the heart, each including a drive portion (11) and a pump portion (12) rigidly connected therewith, comprising a common control unit (66) that controls both pumps (10a, 10b) in mutual dependance upon one another such that flow generated by one of said pumps is used to control the operation of the other said pump.
A method of maintaining total circulatory support normally provided by a heart having a left side, including a left ventricle and left atrium which draws blood from a pair of lungs and pumps into an aorta supplying an arterial vasculature, and a right side, including a right ventricle and right atrium which draws blood from a venous vasculature and pumps into the pair of lungs, comprising the steps of:
- percutaneously placing a first intravascular microaxial flow pump through the arterial vasculature into the left ventricle so as to pump blood from the left ventricle into the aorta;
- and
- percutaneously placing a second intravascular microaxial flow pump through the venous vasculature into the right ventricle so as to pump blood to the lungs.
A method of maintaining total circulatory support normally provided by a heart having a left side, including a left ventricle and left atrium which draws blood from a pair of lungs and pumps into an aorta supplying an arterial vasculature, and a right side, including a right ventricle and right atrium which draws blood from a venous vasculature and pumps into the pair of lungs, comprising the steps of:
- surgically placing a first intravascular microaxial flow pump in the left ventricle via an arteriotomy in the aorta so as to pump blood from the left ventricle into the aorta;
- and
- surgically placing a second intravascular microaxial flow pump in the right ventricle via a arteriotomy in the pulmonary artery so as to pump blood into the lungs.
Dependencies are inferred from the claim text.