219results about "Blood pumps" patented technology

The invention relates to an intravascular blood pump comprising a pumping device having a pump portion and a drive portion, wherein the pump portion comprises a pump housing having a primary blood flow inlet and a primary blood flow outlet hydraulically connected by a primary passage, and the drive portion comprises a stator and a rotor rotatable about a rotational axis and configured to rotate a primary impeller configured to convey a primary blood flow along the primary passage from the primary blood flow inlet to the primary blood flow outlet, the drive portion further comprising a secondary blood flow inlet and a secondary blood flow outlet hydraulically connected by a secondary passage extending through an axial gap between the rotor and the stator and a secondary impeller arranged at a drive portion end of the rotor and rotatable about the rotational axis together with the rotor.

Disposable set for an extracorporeal blood treatment apparatus including a blood circuit comprising a filtration unit, a blood withdrawal line including a blood pump tract configured to be engaged by a blood pump, a blood return line, and an infusion line extending between a first end connected to the blood withdrawal line upstream the blood pump tract, and a second end for connection to an infusion substance source: the blood pump tract is interposed between the filtration unit and the first end of the infusion line. The disposable set further comprises a pressure damper arranged towards or at the first end of the infusion line, the pressure damper being configured to prevent, or reduce an amount of, the access negative pressure to extend in the infusion line upstream the pressure damper.

Device (10) for extracorporeal blood treatment, in particular a dialysis device (10) which includes a radar sensor (17) for monitoring a patient (P) located at a treatment station, at least one shut-off device (13, 30) for shutting off a line (23) connected venously to the patient (P) and / or for shutting off an arterial line (22) connected to the patient (P), in particular in the form of a hose clamp (30) clamping an elastic or flexible area of ​​the line (22, 23), a blood pump and has a control unit (14), wherein the control unit (14) is set up and configured to determine a patient's (P) respiratory rate and / or respiratory amplitude based on signals from the radar sensor (17) and to trigger an alarm signal if the respiratory rate and / or respiratory amplitude detected by the radar sensor (17) deviates from one or more preset limit values, the shut-off device (13, 30) can be automatically operated via the control unit (14) in the event of an alarm and The blood pump is stopped in case of an alarm.

Improved securement devices for use with intracardiac blood pump assemblies are provided. The present technology provides securement devices that may be used with a sheath assembly (e.g., an introducer sheath assembly, repositioning sheath assembly), and which are configured to restrict movement of an object (e.g., the catheter of the pump assembly) within the sheath assembly except when a mechanism (e.g., button) of the securement device is actively being actuated (e.g., pressed, held, etc.).

A magnetic levitation centrifugal pump, including a volute (200), stator magnetic ring (22) and a rotor (100); the volute (200) has a levitation cavity, a medium inlet and a medium outlet, the rotor (100) is located inside the levitation cavity, the stator magnetic ring (22) are fixed to the volute (200), and the rotor (100) includes a rotor body and dynamic magnetic ring (16) located on the rotor body; the dynamic magnetic ring (16) and the stator magnetic ring (22) are coaxial with each other and are nested, to limit the radial positions of the rotor body and the volute (200); magnet steel assemblies (14) are further fixed at the rotor body, each magnet steel assembly (14) includes N first magnet steels (141) arranged along the circumferential direction, and magnetic poles of all the first magnet steels (141) are arranged in a staggered manner; two ends of the volute (200) are also encapsulated with driving coil assemblies (21), and the two driving coil assemblies (21) cooperate with the magnet steel assemblies (14) to provide an axial force for the rotor body to move in an axial direction and a rotational force. An axial force is provided by the magnet steel assemblies (14) arranged at two ends of the rotor body (100) and corresponding driving coil assemblies (21) on the volute (200). No additional coil and sensor assembly is required, the volume and weight can be greatly reduced, thereby achieving high reliability and miniaturization of a blood pump.

The invention relates to a device (1) for enriching fluids (F) with an enrichment gas in a high pressure region (2) within the device (1) when flowing through the device (1), wherein the high pressure region (2) extends between an inlet side (11) and an outlet side (12) and has a predefined length in the flow direction (D) of the fluid, comprising a pressure boosting unit (3), preferably a first peristaltic pump, at the beginning (21) of the high pressure region (2) for increasing a pressure of the fluid (F) relative to the ambient pressure (UD), a gas supply unit (4) in the high pressure region (2) for supplying the enrichment gas (AG) under increased pressure (HD2) relative to the ambient pressure (UD) to the fluid already under increased pressure (HD1), and a pressure reduction unit (5), preferably a second peristaltic pump, at the end (22) of the high pressure region (2) for reducing the pressure of the fluid (F) at least to an effective pressure (ND) and preferably for conveying the fluid (F) out of the device (1).

Present disclosure discloses an implantable total artificial heart. The artificial heart includes a first pumping chamber, a second pumping chamber and an actuator disposed between the first pumping chamber and the second pumping chamber. The actuator is configured to operate between a first operating state and a second operating state. Further, the artificial heart includes a plurality of first wires wound around the first pumping chamber and the actuator, and / or a plurality of second wires wound around the second pumping chamber and the actuator. Each of the plurality of first and second wires are configured to compress the first and second pumping chambers relative to operation of the actuator for receiving fluid into and pumping fluid out of the first and second pumping chamber. The configuration of the artificial heart is compact, improves durability and mimicking the natural movement of a human tissue for reducing stress on blood and resulting in fewer side effects.

Example medical devices including example cardiac pumps are disclosed. An example percutaneous circulatory support device system includes a blood pump including a pump housing having a distal end region and a proximal end region, a blood inlet positioned along the distal end region, a blood outlet positioned along the proximal end region and a first diaphragm pump positioned within the pump housing. Further, the first diaphragm pump is configured to draw blood into the pump inlet and pump blood out of the blood outlet.

Blood pump system comprising: - a blood pump (1) comprising a discharge structure (2) which is pneumatically driven for alternately applying suction and pressure in operation, in particular for cyclically driving fluid through a blood pump line (3) discharge, wherein the discharge structure (2) is preferably a membrane; - a pneumatic driver (10) for pneumatically driving the discharge structure (2) of the blood pump (1) via a pneumatic control line (5); wherein the pneumatic driver (10) comprises a piston-cylinder assembly (11, 12), the cylinder (12) having a gas communication port (13) for connection to the pneumatic control line (5), the piston-cylinder assembly (11, 12) being provided with an electromagnetic actuator (14) for moving the piston (11) relative to the cylinder (12). The invention also relates to a pneumatic driver (10) and to a method for driving a blood pump.

A method and apparatus for determining a patient's withdrawal status in association with a mechanical circulatory support device is provided. The method includes receiving a set of signals from a mechanical circulatory support device implanted in the patient's heart; determining a set of features using a computer processor, at least partially based on the set of signals; providing the set of features as input to a machine learning model trained to output a patient's withdrawal status; and displaying an indication of the patient's withdrawal status output from the machine learning model on a user interface associated with the mechanical circulatory support device.

An intravascular blood pump (1) comprises a pump housing (2) having a blood inflow (21) and a blood outflow (22), and an impeller (3) arranged in the pump housing (2) to be rotatable about an axis of rotation, wherein the impeller (3) has blades (31) which are dimensioned and shaped for conveying blood from the blood inflow (21) to the blood outflow (22). The blood pump (1) further comprises a drive unit (4) for rotating the impeller (3), the drive unit (4) comprising a plurality of posts (40) arranged about the axis of rotation (10), wherein each of the posts (40) comprises a stem portion (41) and a head portion (42). Coil windings (470) around the posts are controllable in sequence to generate a rotating magnetic field. The drive unit (4) further comprises a back plate (50) which engages with the end (44) of the stem portion (41) of the posts (40) opposite the head portion (42).

The utility model provides a blood pump which comprises a rotor assembly, a stator assembly and a shell, the rotor assembly and the stator assembly are arranged in the shell in a spaced mode in the rotation axis direction of the rotor assembly, the rotor assembly comprises an impeller, a power magnetic ring and a center shaft, and the blood pump further comprises a first magnetic bearing assembly. The first magnetic bearing assembly comprises a first inner magnetic bearing and a first outer magnetic bearing which are matched with each other, the first outer magnetic bearing is arranged on the inner wall of the shell, and the impeller, the first inner magnetic bearing and the power magnetic ring are all fixedly arranged on the center shaft; the rotor assembly can rotate around the axis of the rotor assembly so as to drive fluid to flow into and out of the shell, and in the power-on state, the rotor assembly can be spaced from the stator assembly by a first preset distance in the rotating process. All the components of the rotor assembly are fixed on the central shaft, so that the stability of relative positions of all the components is guaranteed, the overall structural strength of the rotor assembly is improved, the stability of operation of the blood pump is guaranteed, and the service life of the blood pump is prolonged.

Intravascularly delivered blood pumps and associated devices, systems, and methods, are disclosed herein. A method of intravascularly delivering a blood pump in accordance with embodiments of the present technology can include, for example, advancing an elongated delivery dilator through a patient's vasculature such that a first portion of the elongated delivery dilator is externally accessible proximate to the subclavian artery and a second portion of the elongated delivery dilator is externally accessible proximate to the femoral artery. The method can further include attaching the second portion of the elongated delivery dilator to a driveline, which is coupled to a balloon at the opposite end, and then pulling on the first portion of the elongated delivery dilator to move the driveline and the balloon through the patient's vasculature to a target site with the balloon positioned within the aorta.

Blood pump system including: -a blood pump (1) including a pneumatically driven displacement structure (2) for, while in operation, alternatingly applying suction and pressure, in particular for cyclically driving fluid displacement through a blood pump line (3), wherein the displacement structure (2) is preferably a membrane; -a pneumatic driver (10) for pneumatically driving the displacement structure (2) of the blood pump (1) via a pneumatic control line (5); wherein the pneumatic driver (10) includes a piston-cylinder assembly (11, 12), the cylinder (12) having a gas communication port (13) for connection to the pneumatic control line (5), the piston-cylinder assembly (11, 12) being provided with an electromagnetic actuator (14) for moving the piston (11) with respect to the cylinder (12). The invention also relates to a pneumatic driver (10), as well as a method for driving a blood pump.

An insertion catheter for a circulatory support catheter having a circulatory support device carried by an elongate flexible catheter shaft. The insertion catheter comprises a tubular body with a distal portion configured to axially movably receive the circulatory support device. A diameter of the distal portion is greater than a diameter of a mid portion of the tubular body. The insertion catheter may be inserted into an introducer sheath for delivery of the MCS device. A distal end of the insertion catheter may be located distally of a distal end of the introducer sheath and distally of the arterial bifurcation. The distal portion of the insertion catheter containing the MCS device may be located distally of the bifurcation, with a distal end of the MCS device slightly offset from the distal end of the tubular body.

A circulatory support system can include a blood pump, one or more sensors, and a controller. The blood pump can include a driven component and a motor in communication with the driven component and the controller to drive the driven component to pump a flow of blood through the blood pump. The controller can be configured to determine a command signal based on a value related to a speed of the motor, provide the command signal to the motor to drive the driven component, determine a value of a parameter related to operation of the blood pump based on the command signal and the value related to the speed of the motor, and output an indication that a blood pump transition is recommended based on one or more determined values of one or more parameters related to operation of the blood pump.

A catheter pump includes an introducer having a pre-collapsing channel adapted to receive a pump head in an expanded state therein. When the introducer is in a first assembly state in which the introducer is slidingly disposed over the catheter, the pump head is collapsed through a distal end of the introducer by pushing the introducer forward and / or pulling the catheter rearward. When the introducer is in a second assembly state in which the introducer is separated from the catheter pump, a distal end of the pump head is insertable into a proximal end of the introducer, and the pump head is collapsed through the proximal end of the introducer by pulling the introducer rearward and / or pushing the catheter forward.

Catheter blood pumps that include an expandable pump portion. The pump portions include a collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers. The collapsible scaffold and / or an elongate member extending proximally from the pump portion may include portions of differing radial stiffness or flexibility.

To provide systems, devices, and methods for providing cardiac support to a heart.SOLUTION: The systems, devices, and methods use a blood pump to obtain measurements of cardiac functions. The systems quantify the functions of the native heart by measuring certain parameters / signals such as aortic pressure or motor current, then calculate and display one or more cardiac parameters and cardiac function parameters, such as left ventricular pressure, left ventricular end diastolic pressure or cardiac power output.SELECTED DRAWING: Figure 3

The application discloses a self-adaptive vena cava occlusion balloon ventricular assist system, which comprises a balloon catheter device and a control device. The balloon catheter device comprises a catheter, a balloon arranged on the catheter and close to the proximal end of the catheter, and a joint arranged on the distal end of the catheter. The catheter is provided with a first pressure cavity, a second pressure cavity and a liquid delivery cavity. The first pressure cavity is used for connecting the first blood pressure measuring port and the joint and is connected with the first blood pressure sensor through a first catheter. The second pressure cavity is arranged on the catheter in a lengthwise direction and is used for connecting the second blood pressure measuring port and the joint and is connected with the second blood pressure sensor through a second catheter. The liquid delivery cavity is used for connecting the inside of the balloon and the joint and is connected with a liquid delivery pump through a liquid delivery catheter. A micro pressure sensor is attached to the outer wall of the balloon, and a signal line led out from the micro pressure sensor is connected with a signal acquisition module through a signal extension line. The application can adjust the pressure of the balloon on the blood vessel wall during occlusion according to the change of the vena cava diameter, improve the occlusion effect and avoid damaging the blood vessel.

Systems and related methods for supplying power to a medical device. A medical system includes a medical service and a base module. The medical device is configured to be worn by a user or implanted in the user. The base module is configured to control operation of the medical device and supply electrical power to the medical device. The base module includes a base module input connector that includes two power connectors, two ground connectors, and a data connector arranged in a symmetrical arrangement that accommodates two opposite connection orientations of a mating input connector with the base module input connector.

Aspects of the present disclosure generally relate to systems and methods for perfusion, and more specifically, for pulsatile blood perfusion based on a measured pressure waveform. One example method generally includes receiving, via a graphical user interface presented to a user, datapoints indicating a waveform; receiving one or more parameters associated with blood perfusion; generating an offset removed waveform based on the datapoints, the offset removed waveform having a physiological offset removed; converting the offset-removed waveform to a voltage waveform based on the one or more parameters; and operating, via the voltage waveform, a pump to provide blood in a perfusion system. The aspects described herein are applicable for any suitable perfusion environment, such as extracorporeal perfusion or isolated organ perfusion.

This invention provides a blood pump, including a rotor assembly, a stator assembly, and a housing. The rotor assembly and stator assembly are axially spaced within the housing along the fluid flow direction. The rotor assembly can rotate around its own axis under the influence of the magnetic field generated by the stator assembly, thereby driving fluid flow. A flow channel is formed in the rotor assembly, having an outlet and an inlet, with the outlet located on the side of the rotor assembly facing the stator assembly. This invention utilizes the flow channel in the rotor assembly to guide blood to the proximal end of the rotor assembly, ensuring the blood flow velocity in the area between the proximal end of the rotor assembly and the stator assembly. This avoids blood clotting caused by a decrease in blood flow velocity within the blood pump, ensuring the smooth rotation of the rotor assembly, and thus guaranteeing the stability of the blood pump operation and the safety of medical procedures.

In accordance with at least one aspect of this disclosure, a system for delivery and placement of an intracardiac device within a patient comprises, a deployment wire, a sheath, and a snare. The deployment wire is configured for percutaneous delivery of an intracardiac device to a cardiac chamber through a peripheral artery. The deployment wire has a proximal end portion and a distal end portion, where the proximal end portion has a formed tip and the distal end portion is configured to operatively connect to the intracardiac device.

This application relates to the field of medical devices and discloses a medical pumping device, a motor, and a rotor structure. The medical pumping device includes an actuator and a motor. The motor includes a stator structure, a rotor structure, and an output shaft. The stator structure is located on at least one side of the rotor structure along the axial direction of the motor. The rotor structure is connected to the output shaft, and the output shaft is connected to the actuator. The rotor structure includes at least a plurality of first magnets and a plurality of second magnets that abut against each other along the circumferential direction of the motor. The plurality of first magnets and the plurality of second magnets are alternately arranged circumferentially. The magnetization direction of the first magnets is axially aligned, and the magnetization direction of the second magnets is circumferentially aligned. The magnetization directions of adjacent first magnets are opposite, and the magnetization directions of adjacent second magnets are opposite. Along the axial direction, each first magnet includes a functional surface facing the stator structure. The functional surface forms an angle with the radial direction of the motor, and there is an equidistant gap between the end face of the stator structure and the functional surface. This design aims to reduce the size of the medical pumping device.

The application relates to a perfusion guide device, a method, a ventricular assist system, a storage medium and equipment for a ventricular assist device, which comprises a pressure detection module, a state judgment module and an auxiliary confirmation module, wherein the pressure detection module is used for detecting the pipeline pressure after at least one pipeline exhaust operation is completed, the state judgment module is used for comparing the detected pressure value with a preset threshold value to identify the leakage or blockage state of the pipeline, and the auxiliary confirmation module is used for instructing to disconnect the connection between the perfusion pump and the catheter pump when it is confirmed that the reason for excluding the pipeline blockage cannot be confirmed, and is also used for controlling the infusion motor to drive the perfusion pump to operate at a preset rotating speed for a preset auxiliary confirmation time period, and judging whether the blockage is located in the perfusion pump pipeline or the catheter pump pipeline based on whether the measured pressure value during the operation exceeds the preset threshold value.

Apparatus and methods are described for use with a device that includes a delivery catheter, a proximal element, which is disposed proximally to the delivery catheter and is wider than the delivery catheter, an elongate element passing through the proximal element and the delivery catheter, and a self-expandable element coupled to the elongate element. Packaging includes a tray, shaped to define a chamber in which the self-expandable element is packageable, and configured to stabilize the proximal element while the self-expandable element is retracted into the delivery catheter via retraction of the elongate element. A securement piece is coupled to the tray adjacently to the chamber, and is configured to secure a distal end of the delivery catheter while the self-expandable element is retracted into the delivery catheter.