Abstract: The invention relates to a blood pump. The blood pump comprises a flexible drive shaft guided in a catheter, a conveying element connected to the drive shaft in a distal region of the drive shaft, and a motor, wherein the motor has a stator and a rotor mounted such that it can move in the stator. The stator comprises a winding and the rotor comprises a rotor magnet. In addition, the drive shaft is connected to the rotor at a proximal end of the drive shaft. The stator and the rotor are nondetachably connected to one another, and form a gap with a ring-shaped cross-section, which is delimited by the rotor and the stator.

Abstract: A blood pump assembly can include various components such as a housing and a sensor configured to detect one or more characteristics of the blood. In some embodiments, the sensor can be coupled to the housing and can include a sensor membrane configured to deflect in response to a change in a blood parameter (e.g., pressure). The blood pump assembly can include a shield that covers at least a portion of the sensor membrane so as to protect the sensor from damage when the blood pump assembly is inserted through an introducer and navigated through the patient's vasculature and/or when the blood pump assembly is inserted into the heart in a surgical procedure. One or more protective layers can be deposited over the sensor membrane to prevent the sensor membrane from being dissolved through interactions with the patient's blood.

Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet connected by a passage, and an impeller rotatable about an axis of rotation. A surface of the impeller faces a surface of the pump casing spaced from said surface of the impeller by a clearance, the clearance being in fluid connection with the passage at a clearance transition point. At least one wash out channel extends through the impeller and is in fluid connection with the passage via a first opening and with the clearance via a second opening. The first opening of the wash out channel is arranged in an area of the impeller that is under a higher pressure than the clearance transition point so as to cause a blood flow from the first opening through the wash out channel and the clearance to the clearance transition point.

Abstract: The invention relates to a micromotor (10), the stator of which contains a back iron jacket (18). Said back iron jacket consists of a continuous unslotted sleeve consisting of a metal alloy that contains ferritic iron as the main constituent, up to 30% chromium and preferably aluminium and yttrium oxide. Electric conductivity is reduced by the oxidation of the aluminium. The yttrium oxide performs the same function. The reduced electric conductivity suppresses eddy currents to a great extent. The back iron jacket (18) has a high magnetic conductivity with a small wall thickness, thus increasing the electrical output for a motor with a small diameter.

Abstract: This invention is directed to a corrosion resistant permanent magnet, to a method for producing a corrosion resistant permanent magnet, and to an intravascular blood pump comprising the magnet. The magnet is corrosion resistant due to a composite coating comprising a metal layer, optionally a metal oxide layer, a layer formed from poly(2-chloro-p-xylylene), and a linker layer between the metal oxide layer and the poly(2-chloro-p-xylylene) layer.

Abstract: The invention relates to an intravascular blood pump. The blood pump comprises a pump section having a proximal portion with a blood flow inlet and a distal portion with a blood flow outlet and an impeller for causing blood to flow into the blood flow inlet and towards the blood flow outlet. The blood pump further comprises at least one filter connected to the proximal portion of the pump section and arranged with respect to the blood flow inlet so as to filter the blood before it enters the blood flow inlet. The filter may comprise an expandable mesh structure made of a shape-memory material.

Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing and rotatably supported in the pump casing by a bearing so as to be rotatable about an axis of rotation. The impeller has blades for conveying blood from the blood flow inlet to the blood flow outlet. The bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards. The bearing further comprises a rotating bearing surface interacting with the stationary bearing surface to form the bearing, wherein the rotating bearing surface faces radially inwards and is formed on an exposed radially inner edge of the blades. The blades are designed to draw blood deposit on the stationary bearing surface in a radially outward direction.

Abstract: An intravascular blood pump comprises a pumping device including an impeller and an electric motor for driving the impeller. A rotor of the electric motor is rotatable about an axis of rotation and coupled to the impeller so as to be able to cause rotation of the impeller. An outer sleeve forms a casing of the pumping device, wherein stator components are fixed inside the outer sleeve by means of a casting compound. In a method of manufacturing the blood pump the stator components are placed on a molding base, including the outer sleeve to thereby form an interspace between the molding base and the outer sleeve in which the stator components are disposed. The casting compound is then injected into the interspace via the molding base to fix the stator components inside the outer sleeve. The outer sleeve preferably comprises a magnetically conductive material to form a yoke of the electric motor.

Abstract: An intravascular blood pump having a rotatable shaft carrying an impeller and a housing with an opening through which the shaft extends with the impeller positioned outside the housing. The shaft and the housing have surfaces forming a circumferential gap which has a gap width of no more than 2 ?m over at least part of the length of the gap and at least one of the surfaces forming the gap is made of a material having a thermal conductivity of at least 100 W/mK, in particular a ceramic material such as silicon carbide.

Abstract: A blood pump comprises a pump casing a blood flow inlet and a blood flow outlet connected by a passage, and an impeller. The impeller comprises blades configured to convey blood from the blood flow inlet to the blood flow outlet, the impeller being supported in the pump casing by at least one contact-type bearing comprising a surface of the impeller facing a surface of the pump casing. At least one wash out channel extends through the impeller and is in fluid connection with the passage via a first opening and with the bearing via a second opening. The wash out channel is operatively associated with a secondary pump for pumping blood through the wash out channel towards the bearing. The secondary pump is formed at least partially by said at least one wash out channel extending through the impeller along a direction having at least one tangential directional component.

Abstract: Disclosed is a rotor for a compressible fluid pump, in particular a blood pump that can be introduced into a patient's body through a blood vessel; said rotor comprises one or more impeller elements, is compressible and expansible between an expanded state and a compressed state, is made at least in part of a fiber-reinforced plastic material, is provided for rotating about an axis of rotation, and is characterized in that in the expanded state of the rotor, a first percentage, i.e. more than 30%, in particular more than 50%, of the fibers runs substantially straight between the first end (10a, 11a, 13a) thereof lying closest to the axis of rotation and a second end lying further away from the axis of rotation. According to the invention, the rotor retains its shape very well even when subjected to repeated mechanical stress.

Abstract: An intravascular blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing so as to be rotatable about an axis of rotation, wherein the impeller has blades sized and shaped for conveying blood from the blood flow inlet to the blood flow outlet. The blood pump further comprises a drive unit for rotating the impeller, the drive unit comprising a plurality of posts arranged about the axis of rotation, wherein each of the posts includes a shaft portion and a head portion. Coil windings around the posts are sequentially controllable so as to create a rotating magnetic field. The drive unit further comprises a back plate which engages ends of the shaft portions of the posts opposite the head portions.

Abstract: The application relates to a pump, in particular blood pump. The pump comprises a drive shaft (3) which runs in an axial direction, a delivery element (6) which is connected to the drive shaft (3) in a distal region of this, and a housing (5) which surrounds the delivery element (6). The delivery element (6) and the housing (5) are designed in a manner such that these automatically unfold after a forced compression. The housing (5) moreover comprises an inlet region (22) with at least one inlet opening (23), a fluid-tight region (20) which surrounds a region of the delivery element (6), and an outlet region (24) with at least one opening (23) for the exit of the pump medium. The delivery element (6) is arranged in a manner such that it projects into the outlet region (24).

Abstract: An integrated sheath assembly for inserting a medical device such as a percutaneous pump into a vessel can include a first sheath having a first lumen defining a first opening between proximal and distal ends of the first sheath for passage of a portion of the pump and a second sheath having a second lumen defining a second opening between proximal and distal ends of the second sheath. The second lumen is expandable to allow passage of the first sheath containing the portion of the pump. The first sheath fills a space between the second sheath and the portion of the percutaneous pump when the first sheath containing the percutaneous pump is inserted into the second lumen. The first sheath has a first hub, and the second sheath has a second hub. In some embodiments, a single sheath and a movable connector can be integrated on the medical device.

Abstract: A blood pump for supporting a patient's heart includes a flow cannula having a distal portion including a distal end and a proximal portion including a proximal end opposite the distal end, the distal end of the flow cannula configured to be connected to the patient's heart or a blood vessel to establish fluid communication between the blood pump and the patient's heart and blood vessel, respectively. The flow cannula further includes an intermediate portion attached to the distal portion and the proximal portion, wherein the intermediate portion allows twisting thereof with a lower force than the distal portion and the proximal portion. The intermediate portion can be fully occluded by twisting it. At least a portion of the intermediate portion either alone or in combination with the distal portion is adapted to be permanently attached to the patient's heart or a blood vessel.

Abstract: A method of manufacturing a cannula (4) for an intravascular blood pump comprises the steps of forming a first axial section (13) and a second axial section (15) of an elongate tubular body of the cannula (4) by dispensing a first liquid material and a second liquid material, respectively, onto a mandrel (7) by means of at least one dispenser (8). The mandrel (7) is rotated and the dispenser (8) moves relative to the mandrel (7) in an axial direction during dispensing of the liquid materials. The first and second axial sections (13, 15) are formed so as to have different bending stiffnesses. The first and second liquid materials are dispensed onto the mandrel (7) such that the first and second liquid materials blend into each other to form a smooth transition area (14).

Abstract: An intravascular blood pump may have a catheter (10) and a pumping device (1) attached to the catheter (10). The catheter (10) extends along a longitudinal axis and has a distal end (11) and a proximal end (12) opposite the distal end (11). The catheter (10) may have a tubular stiffening structure (15) extending longitudinally between the proximal end (12) and the distal end (11) of the catheter (10). The tubular stiffening structure (15) has a lumen (21) and a proximal end (17) and a closed distal end (16) opposite the proximal end (17), wherein the lumen (21) of the stiffening structure (15) is configured to receive a pressurized fluid having an over-pressure of at least 5 bar.

Abstract: A blood pump system including a blood pump, an intravascular flow cannula, and a pressure sensor. The intravascular flow cannula is in flow communication with the blood pump and has a distal end portion distally from the blood pump and a proximal end portion closer to the blood pump. The intravascular flow cannula has at least one blood flow through opening at its distal end portion for blood to enter or exit the flow cannula. The blood flow through opening has a borderline surrounding the through opening. The pressure sensor is configured radially within the flow cannula and borders a proximal portion of the borderline.

Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing so as to be rotatable about an axis of rotation. The impeller has blades sized and shaped for conveying blood from the blood flow inlet to the blood flow outlet. The blood pump also has an outflow cannula having an upstream end portion, a downstream end portion and an intermediate portion extending between the upstream end portion and the downstream end portion. The upstream end portion of the outflow cannula is connected to the pump casing such that blood is conveyed from the blood flow outlet of the pump casing into and through the intermediate portion of the outflow cannula towards the downstream end portion of the outflow cannula, wherein the downstream end portion has a blood flow outlet through which blood can exit the outflow cannula.

Abstract: Blood pump for percutaneous insertion into a heart's ventricle comprising an electrical motor for driving the blood pump, the electrical motor comprising at least tree motor winding units, wherein each motor winding unit is individually connectable to a power supply via two separate phase supply lines connected to the respective motor winding unit terminals. Motor controller for driving and controlling the electrical motor of the blood pump, wherein the motor controller comprises corresponding phase supply line driving units for each motor winding units of the electrical motor of the blood pump which phase supply line driving units are connected via the corresponding two-phase supply lines with the corresponding motor winding unit. Blood pump system comprising the blood pump and the motor controller.