Abstract: Methods and apparatuses for determining operational parameters of a blood pump comprising a rotor which transports the blood are provided. The change in the behaviour of at least one first and one second operational parameter, independently from each other, of the pump, is determined. A determination of the flow through the pump and/or the difference in pressure across the pump and/or the viscosity of the blood takes into account the determined change in behaviour of the at least two operational parameters. A modelling for a dynamic model of the known quantities may be carried out and an estimation method using a Kalman filter may be used.

Abstract: An easily detachable connection of a hollow cylindrical component, such as a graft, at a recess in tissue, such as a heart or a blood vessel, an annular element, a guide element and a spring element are provided, which are secured by way of a suture ring at the body part and at the hollow cylindrical component, and which permit an easily disengagable mutual locking by way of the spring element. To this end, the annular element comprises a groove extending around the periphery thereof, into which the spring element plunges for locking.

Abstract: A method and a device for the measurement of one or more fluid-mechanically effective parameters of a fluid, with a fluid pump which comprises a delivery element which is mounted in a magnet bearing, and the delivery element of the fluid pump is excited into an oscillation by way of an excitation device, wherein the oscillation parameters as well as, as the case may be, the oscillation behaviour is measured, and parameters of the fluid are determined from this.

Abstract: A connecting device is provided for connecting a pipe or tube-shaped element to the heart or a blood vessel of a patient, comprising a suture ring that has an opening, which can be closed by means of a closure element and through which said pipe or tube-shaped element is guided in the axial direction. The closure element is secured to the suture ring by means of at least one elastic securing element. A radially-expandable sealing element can also be provided in order to establish a sealing placement of the closure element against the suture ring.

Abstract: A blood pump for supporting the heart may be provided that includes: a rotor with delivery elements; a rotor drive; a pressure sensor; and a regulating device that regulates a pressure or a hemodynamic parameter by means of control of the rotor drive. The pressure and/or the hemodynamic parameter may be determined by means of one or a plurality of hemodynamic sensors and/or from operating parameters of the pump. The regulating device may be suitable for regulating a hemodynamic parameter successively, such as periodically, to different target values. Using such regulation, the blood pump may be operated in an optimized manner, and operation of the blood pump may be varied in a targeted and patient-protective manner in order to attain certain goals.

Abstract: A closing device is provided for an opening in the heart of a patient, the closing device comprising a ring, which can be fastened to the body tissue of the heart in the region of the opening. The ring has a ring opening. The closing device further comprises a closing element, which can be inserted into the ring opening in order to close the ring opening. Furthermore, the closing element can have at least two integrated sensors. The elements provided in or on the closing element can be connected to and can interact with monitoring and control devices in different ways.

Abstract: A fluid pump conveys a fluid, such as blood. A fluid channel that is bounded by a channel wall and a rotor arranged in the fluid channel and that is rotatably mounted about a pivot point of the bearing with a mechanical, hydrodynamic and/or hydrostatic, axial and radial bearing. The fluid channel has a spherical section and the rotor has a rotor body and a conveying element that is arranged within the spherical section of the fluid channel and configured to generate a substantially spherical rotational area of the rotor. The spherical center of the spherical section of the fluid channel and the spherical center of the spherical rotational area substantially coincide with the pivot point so that a minimum distance between the rotor and the channel wall is maintained in the spherical section upon a tilting of the rotor.

Abstract: A connector unit for a control unit is configured to control an implantable blood pump. The connector unit includes a supply interface designed for connecting the connector unit to a power supply, a data interface designed for connecting the connector unit to a data processing unit, and a control interface designed for connecting the connector unit to an integrated interface of the control unit. A supply connection of the control unit to the power supply and a data connection of the control unit to the data processing unit can be established at the same time by means of the connector unit. The application furthermore relates to a control unit for controlling an implantable blood pump and to a control system for an implantable blood pump.

Abstract: A connecting device is provided for connecting a pipe or tube-shaped element to the heart or a blood vessel of a patient, comprising a suture ring that has an opening, which can be closed by means of a closure element and through which said pipe or tube-shaped element is guided in the axial direction. The closure element is secured to the suture ring by means of at least one elastic securing element. A radially-expandable sealing element can also be provided in order to establish a sealing placement of the closure element against the suture ring.

Abstract: A blood pump for supporting the heart may be provided that includes: a rotor with delivery elements; a rotor drive; a pressure sensor; and a regulating device that regulates a pressure or a hemodynamic parameter by means of control of the rotor drive. The pressure and/or the hemodynamic parameter may be determined by means of one or a plurality of hemodynamic sensors and/or from operating parameters of the pump. The regulating device may be suitable for regulating a hemodynamic parameter successively, such as periodically, to different target values. Using such regulation, the blood pump may be operated in an optimized manner, and operation of the blood pump may be varied in a targeted and patient-protective manner in order to attain certain goals.

Abstract: A cannula system is provided. The system may comprise: a cannula having a hose element having front and rear end regions, wherein a channel extends from the front end region to the rear end region, a hollow body having a front end region, and a connector which, in a connected state of the cannula system in which the front end region of the hollow body is introduced into the channel of the hose element, receives the front end region of the hose element and the front end region of the hollow body in an inner region of the connector. The connector may exert clamping forces on the front end region of the hose element and clamp the front end region of the hose element between the front end region of the hollow body and the connector. Also provided is a blood pump system including such a cannula system.

Abstract: A pump is provided with a housing and with an upstream inlet and a downstream outlet and a fluid channel with a channel axis, said fluid channel being arranged between the inlet and outlet. A rotor which can be brought into rotation by way of a motor is arranged within the fluid channel. Furthermore, a sensor arrangement is provided which can detect an inclination of the rotation axis of the rotor.

Abstract: A blood pump may be provided that includes an inlet, an outlet and a rotor for delivering fluid from the inlet to the outlet, wherein the rotor is suspended within the blood pump by radial passive magnetic forces and axially is preloaded in one direction at least by way of passive magnetic forces so that, during a fluid-delivering rotation of the rotor, the axial thrust of the rotor acts counter to the magnetic attraction acting axially in the direction of the outlet.

Abstract: A control device for a heart pump, comprising a device for establishing the end-diastolic filling pressure in a ventricle and a device for associating a delivery rate of the pump, in particular a pump speed or an electric pump capacity, with the established end-diastolic filling pressure. By taking into account the end-diastolic filling pressure, a robust operating option of the heart pump, similar to the physio-logical control, is created.

Abstract: The application relates to a connection system for transmitting energy and/or data from and/or to an implantable blood pump. The proposed connection system comprises a first connection unit, which can be or is connected to the blood pump, and a second connection unit, which can be or is connected to a control and/or energy unit. In particular, the first connection unit can be connected to the blood pump by means of an implantable line. The second connection unit can be connected to the control and/or energy unit by means of a transcutaneous line. The first connection unit and the second connection unit can be wirelessly coupled to each other for wireless transmission of energy and/or data. Furthermore, the first connection unit and the second connection unit are implantable, so that both the first connection unit and the second connection unit are designed for use within the body of a patient.

Abstract: A control device for a heart pump, comprising a device for establishing the end-diastolic filling pressure in a ventricle and a device for associating a delivery rate of the pump, in particular a pump speed or an electric pump capacity, with the established end-diastolic filling pressure. By taking into account the end-diastolic filling pressure, a robust operating option of the heart pump, similar to the physio-logical control, is created.

Abstract: The invention relates to a rotary machine comprising a stator and a rotatably mounted rotor, with one or more magnetic field sensors arranged stationary relative to the stator at a radial distance from a stationary axis, at least one measuring device which configured to detect magnetic field changes with the aid of the aforementioned magnetic field sensors, a rotor which is configured to generate one or more electrical signals in each case, said signals having signal components which correspond to the rotor rotation frequency and to the distance between magnetic field sensor and rotor in each case, wherein a demodulator unit carries out a demodulation of signals generated by or derived from the magnetic field sensors, such that a signal is generated which corresponds to the distance between the rotor and the magnetic field sensor.

Abstract: The application pertains to a blood pump system, in particular a ventricular assist device, VAD, the system including a blood pump, which comprises: a housing, including an inlet and an outlet, preferably an axial influx and a tangential outflow; a motor actuator, wherein the motor includes a plurality of motor coils (for driving an impeller); an impeller, wherein the impeller is located in the housing and includes a plurality of rotor magnets. The system further comprises a drive line; and a control unit for controlling operation of the pump, the control unit configured to: operate the motor, such that the impeller rotates around an axis; and measure the rotor position in a direction along the axis using at least one of the plurality of the motor coils.

Abstract: A pump system is provided comprising a diaphragm fluid pump which can be fluidically connected to a heart and/or at least one blood vessel by means of an inlet cannula and an outlet cannula and is adapted for generating a pulsatile fluid flow for supporting a cardiac activity of the heart, a working pressure source connected to the diaphragm fluid pump by means of a pressure line and adapted for providing a working pressure for driving the diaphragm fluid pump, a control unit adapted for controlling the working pressure, a first flow sensor adapted for detecting a first cannula flow signal corresponding to an inlet flow in the inlet cannula or an outlet flow in the outlet cannula, a working pressure sensor adapted for detecting a working pressure signal corresponding to the working pressure in the pressure line.

Abstract: A heart support system is provided includes a control unit and sound-generating devices, said control unit configured to detect and process alarm events and to carry out control tasks in the heart support system. The heart support system further includes a storage device configured to store one or more defined alarm signal time curves and one or more alarm priorities. Each alarm signal time curve and each alarm priority is assigned to an alarm event. A sound-generation controller is configured such that when an alarm event is detected, the controller overlays a volume time curve onto the alarm signal time curve assigned to the alarm event in the storage device, said volume time curve based on the alarm priority assigned to the respective alarm event in the storage device and the length of time since the detection of the alarm event.