A magnetic levitation centrifugal pump, including a volute, a static magnetic ring and a rotor. The volute is provided with a levitation cavity, a medium inlet and a medium outlet; the rotor is located inside the levitation cavity, and the static magnetic ring is fixed to the volute; the rotor includes a rotor body, a dynamic magnetic ring and at least two blades; the dynamic magnetic ring is coaxial and nested with the static magnetic ring; the rotor body is fixedly provided with a magnet steel assembly and a magnetic member; the volute is encapsulated with a driving coil assembly arranged opposite the magnet steel assembly, and the driving coil assembly cooperates with the magnet steel assembly; the volute is fixedly provided with a magnetic levitation coil assembly, when the magnetic levitation coil assembly is energized, the magnetic member and the magnetic levitation coil assembly generate an axial force.
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A magnetic levitation centrifugal pump, including a volute, stator magnetic ring and a rotor; the volute has a levitation cavity, a medium inlet and a medium outlet, the rotor is located inside the levitation cavity, the stator magnetic ring are fixed to the volute, and the rotor includes a rotor body and dynamic magnetic ring located on the rotor body; the dynamic magnetic ring and the stator magnetic ring are coaxial with each other and are nested, to limit the radial positions of the rotor body and the volute; magnet steel assemblies are further fixed at the rotor body, each magnet steel assembly includes N first magnet steels arranged along the circumferential direction, and magnetic poles of all the first magnet steels are arranged in a staggered manner; two ends of the volute are also encapsulated with driving coil assemblies.
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
Disclosed is an interventional blood pump, including a pump body and a driving unit. The pump body includes a blood inlet and blood outlets. The pump body includes: a rotatable rigid impeller configured to increase power for the flow of blood and accommodated in a rigid impeller outer cylinder, a proximal end of the impeller being connected to a distal end of the driving unit through a flexible shaft, wherein a distal end of the impeller outer cylinder communicates with the blood inlet, and a proximal end of the impeller outer cylinder includes an impeller outlet; and a radially expandable catheter arranged outside the flexible shaft, a distal end of the radially expandable catheter being hermetically connected to the impeller outer cylinder and covering the impeller outlet, and a proximal end of the radially expandable catheter being provided with the blood outlets.
A61M 60/13 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/416 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted directly by the motor rotor drive shaft
Provided is an interventional blood pump, including a pump body and a driving unit. The pump body includes an impeller, a blood flow catheter, a blood flow inlet structure, and a blood flow outlet structure which are in driving connection to the driving unit. The blood flow outlet structure includes an outlet housing, an outlet base, and a guide vane structure arranged on the outlet base and connected to the outlet housing. At least a part of the impeller is accommodated in the outlet housing. The guide vane structure is configured to be capable of converting a rotational motion of the blood flowing out of the impeller into a primarily axial motion.
A61M 60/812 - Vanes or blades, e.g. static flow guides
A61M 60/13 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
A61M 60/174 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart inside a ventricle, e.g. intraventricular balloon pumps discharging the blood to the ventricle or arterial system via a cannula internal to the ventricle or arterial system
A61M 60/221 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having both radial and axial components, e.g. mixed flow pumps
A61M 60/416 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted directly by the motor rotor drive shaft
5.
INTERVENTIONAL BLOOD PUMP WITH BENDING ADJUSTMENT FUNCTION
The present invention relates to an interventional blood pump, which comprises a pump head (100), a handle (8), and a connecting member for connecting the pump head (100) and the handle (8). When the pump head (100) is in a working position in the heart, the handle (8) is located outside the body, and the connecting member is at least partially located in the body. The interventional blood pump further comprises a bending adjustment mechanism. The bending adjustment mechanism is configured to be capable of adjusting the bending degree and the bending direction of the connecting member. The interventional blood pump of the present application has the bending adjustment capacity, can better adapt to a bent blood vessel structure during the intervention, has a good passing ability, can reduce the friction between a distant end of a catheter and a blood vessel wall, thereby reducing damage to a blood vessel, can be more easily placed at an ideal expected position, and can continue to adjust the posture by means of the bending adjustment mechanism after being placed in place until the position of the pump head is adjusted to the best.
A61M 60/17 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart inside a ventricle, e.g. intraventricular balloon pumps
6.
INTERVENTIONAL BLOOD PUMP WITH OUTLET FLOW GUIDE STRUCTURE
Provided is an interventional blood pump, comprising a pump body and a driving unit (6). The pump body comprises an impeller (4), a blood flow catheter (3), a blood flow inlet structure (2), and a blood flow outlet structure (5) which are in driving connection to the driving unit (6), wherein the blood flow outlet structure (5) comprises an outlet housing (52), an outlet base (54), and a guide vane structure (56) arranged on the outlet base (54) and connected to the outlet housing (52). At least a part of the impeller (4) is accommodated in the outlet housing (52). The guide vane structure (56) is configured to be capable of converting the rotational motion of the blood flowing out of the impeller (4) into a primarily axial motion. The blood flow outlet structure (5) with the guide vane structure (56) can effectively promote the regularity of a blood flow field and reduce the destructive effect on red blood cells by means of controlling the flow direction of blood pumped out by the impeller (4).
A61M 60/17 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart inside a ventricle, e.g. intraventricular balloon pumps
An interventional blood pump (100), comprising a pump body (101) and a driving unit (6). The pump body comprises a blood inlet (23) and a blood outlet (51). The pump body comprises: a rotatable rigid impeller (3) configured for increasing power for the flow of blood and accommodated in a rigid impeller outer cylinder (34), a proximal end of the impeller being connected to a distal end of the driving unit by means of a flexible shaft (4), wherein a distal end of the impeller outer cylinder communicates with the blood inlet (23), and a proximal end of the impeller outer cylinder comprises an impeller outlet (36); and a radially expandable catheter (5) arranged outside the flexible shaft and extending in at least one part of the length of the flexible shaft, a distal end of the radially expandable catheter being hermetically connected to the impeller outer cylinder and covering the impeller outlet, and a proximal end of the radially expandable catheter being provided with the blood outlet (51). When the catheter is in a radial expansion state, a gap (52) between the catheter and the flexible shaft forms a blood flow channel communicating with the blood inlet (23) and the blood outlet (51). When the pump body is at a working position in the heart, the blood inlet is located in the left ventricle or right ventricle, the blood outlet is located in the aorta or pulmonary artery, and the catheter (5) spans the corresponding arterial valve.
A61M 60/17 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart inside a ventricle, e.g. intraventricular balloon pumps
A magnetic levitation centrifugal pump, which comprises a volute (200), a static magnetic ring (22), and a rotor (100); the volute (200) is provided with a levitation cavity, a medium inlet, and a medium outlet; the rotor (100) is located in the levitation cavity, and the static magnetic ring (22) is fixed to the volute (200); the rotor (100) comprises a rotor body, a moving magnetic ring (16) positioned at the rotor body, and at least two blades (13); and the moving magnetic ring (16) and the static magnetic ring (22) are coaxial and in a nested arrangement to limit a radial position of the rotor body and the volute (200); the rotor body is fixedly provided with a magnet assembly (14); the rotor body is further fixedly provided with a magnetic member (17); the volute (200) is packaged with a driving coil assembly (21) arranged opposite the magnet assembly (14), and the driving coil assembly (21) cooperates with the magnet assembly (14) to cause the rotor body to rotate in the circumferential direction; the volute (200) is fixedly provided with a magnetic levitation coil assembly (27), and when electricity is provided to the magnetic levitation coil assembly (27), the magnetic member (17) and the magnetic levitation coil assembly (27) generate an axial force. By means of magnetic action between the moving magnetic ring (16) and the static magnetic ring (22), fully levitating operation of the rotor (100) can be achieved; heat generation and wear are reduced, and the possibility of blood clotting as well as crushing and destroying blood cells is maximally reduced; control over the rotational driving and the axial position of the rotor (100) are completely independent, and the present invention has simple control logic.
A61M 60/419 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
A61M 60/492 - Details relating to driving for devices for mechanical circulatory actuation the force acting on the actuation means being magnetic generated by permanent magnets
A magnetic suspension type centrifugal pump, comprising a volute (200), a static magnetic ring (22), and a rotor (100). The volute (200) is provided with a suspension cavity, a medium inlet and a medium outlet. The rotor (100) is located inside the suspension cavity. The static magnetic ring (22) is fixed to the volute (200). The rotor (100) comprises a rotor body and a movable magnetic ring (16) positioned on the rotor body. The movable magnetic ring (16) and the static magnetic ring (22) are coaxial and nested, so as to limit the radial position of the rotor body and the volute (200). The rotor body is further fixed with magnetic steel assemblies (14). The magnetic steel assemblies (14) comprises N first magnetic steels (141) that are circumferentially arranged. The magnetic poles of all the first magnetic steels (141) are arranged in a staggered manner. Drive coil assemblies (21) are further packaged at two ends of the volute (200). The two drive coil assemblies (21) cooperate with the magnetic steel assemblies (14) to provide axial force and rotational force for the rotor body moving in the axial direction. Thus, axial force is provided by means of the magnetic steel assemblies (14) arranged at the two ends of the rotor (100) and the corresponding drive coil assemblies (21) on the volute (200), additional coils and sensor assemblies are not needed, such that the size and the weight can be greatly reduced, and high reliability and miniaturization of a blood pump are achieved.
A61M 60/419 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
A61M 60/492 - Details relating to driving for devices for mechanical circulatory actuation the force acting on the actuation means being magnetic generated by permanent magnets
Disclosed is a blood pump device. The blood pump device includes: a housing having an overflow passage, and an inlet and an outlet respectively connected to the overflow passage; a rotor assembly rotatably disposed in the overflow passage; a coil disposed in a side wall of the housing; a first permanent magnet portion disposed inside the rotor assembly; a second permanent magnet portion disposed in the side wall of the housing, the first permanent magnet portion and the second permanent magnet portion forming a radial permanent magnet bearing; a piece of electric motor magnetic steel disposed inside a rotor of the rotor assembly; and a magnetic protection portion disposed at a periphery of the coil, wherein the magnetic protection portion and the electric motor magnetic steel act together to provide an axial pre-tightening force for the rotor assembly.
A61M 60/416 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted directly by the motor rotor drive shaft
A blood pump control system includes a local processing terminal and a remote processing terminal. The local processing terminal is configured to transmit to the remote processing terminal, collected current state parameters of the blood pump and heart activity indexes, and to drive and control the blood pump according to blood pump adjusting parameters received from the remote processing terminal. The remote processing terminal is configured to obtain current blood pump adjusting parameters according to the current state parameters, and the heart activity indexes received from the local processing terminal, and set adjusting conditions; and to transmit the blood pump adjusting parameters back to the local processing terminal.
An axial flow pump (10) is presented which includes a housing (1) with an inlet (2) and outlet (3) and a magnetically active rotor (5) in the housing which is provided with a passage (6) in the interior and with at least one spiral-shaped vane (7) in the passage, wherein the pitch of the vane (7) varies in the axial direction. The axial flow pump (10) furthermore includes an electromagnetic drive (4, 8) with a stator (8) which is arranged at the housing and cooperates with a magnetically active rotor.
F04B 35/04 - Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
F04B 35/00 - Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
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