Patents
Literature
1730 results about "Blood pump" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
The blood pump was patented in 1855 by Porter and Bradley and was hand operated. A modification first named surgical pump, designed and manufactured by E. E. Allen in 1887, was intended for direct blood transfusion. Truax, who also distributed and promoted the Allen pump with one roller, developed the first double roller pump in 1899. In the following decades, several researchers, including Beck, Van Allen, Bayliss and Müller as well as Henry and Jouvelet, refined the apparatus and recommended the use of roller pumps for blood transfusion and other applications. After further modifications made by DeBakey in 1934, and application of this pump in one of the first heart-lung machines constructed by Gibbon, DeBakey's name became inseparably attached to this type of pump. For perfusion experiments, an electrically powered roller pump was first used by Fleisch in 1935. Today, the roller pump is the most frequently used blood pump for cardiopulmonary bypass worldwide, having prevailed against the early pulsatile tube compression pumps and ventricular pumps. In recent years, centrifugal pumps have increasingly competed with roller pumps as systemic blood pumps for cardiopulmonary bypass and have become the preferred arterial pump in a variety of centers. Application of mechanical cardiac assistance has evolved from nonpulsatile roller pump support, followed by an era of pulsatile ventricular pumps to the rediscovery of the nonpulsatile flow mode with modern axial flow pumps.
Method of manufacturing electrical conductor tracks in a region of an intravascular blood pump
A method of manufacturing electrical tracks in a region of an intravascular blood pump is provided. The method can include providing an intravascular blood pump with a flow cannula including a spiral structure, a sensor and an electrical connection region, applying a conductor structure to a coatable material of the flow cannula, electrically connecting a first portion of the conductor track structure to the sensor and a second portion of the conductor track structure to the electrical connection region and closing the spiral structure using a flexible material where the flexible material can be silicone or polyurethane.
Owner:KARDION GMBH
Intravascular blood pumps and methods of use
Devices for moving blood within a patient, and methods of doing so. The devices can include a pump portion that includes an impeller and a housing around the impeller, as well as a fluid lumen. The impeller can be activated to cause rotation of the impeller and thereby move fluid within the fluid lumen.
Owner:SUPIRA MEDICAL INC
Intracardiac blood pump with capacitive sensing location detection
Methods and apparatus for determining a position of an intracardiac blood pump in a patient are described. The method includes receiving from at least one capacitive sensor associated with a cannula of the intracardiac blood pump, at least one capacitive signal, determining a position of the intracardiac blood pump in the patient based, at least in part, on the at least one capacitive signal, and providing an indication of the position of the intracardiac blood pump on a user interface of the circulatory support device.
Owner:ABIOMED INC
Thermistor imbedded therapeutic catheter
A system and method for determining native cardiac output of a heart while maintaining operation of an intracardiac blood pump includes determining a current drawn by the pump motor, a blood pressure within the ascending aorta, and a change in the blood temperature based on a thermodilution technique. An intracardiac blood pump positioned in the aorta includes at least one sensor for determining a motor current and blood pressure and a thermistor for determining the change in blood temperature after a precise fluid bolus has been introduced into the vasculature. A processor receives current, pressure, and temperature measurements, and calculates a pump flow output and a total cardiac output from which the native cardiac output is calculated. The native cardiac output and other clinically relevant variables derived from the measurements inform decisions related to continued therapeutic care, including increasing or decreasing cardiac assistance provided by the intracardiac pump.
Owner:MT SINAI SCHOOL OF MEDICINE +1
Method of manufacturing electrical conductor tracks in a region of an intravascular blood pump
An intravascular blood pump (100) comprises a tip (110), a first region (120) with at least one blood through-opening (121), a flow cannula (130), a second region (140) with at least one blood through-opening (141), a motor-operated pump mechanism (150) and a conducting cable (170). At least in the region of the flow cannula (130), at least one electrical conductor track is realized by a surface coating structure.
Owner:KARDION GMBH
Blood pump assembly having a sensor and a sensor shield
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.
Owner:ABIOMED INC
Blood pumps
A blood flow assist system can include an impeller assembly including an impeller shaft and an impeller on the impeller shaft, a primary flow pathway disposed along an exterior surface of the impeller. The system can include a rotor assembly at a proximal portion of the impeller shaft. A secondary flow pathway can be disposed along a lumen of the impeller shaft. During operation of the blood flow assist system, blood can be pumped proximally along the primary flow pathway and the secondary flow pathway. The system can include a sleeve bearing distal the impeller. The system can include a drive unit having a distal end disposed distal a proximal end of the second impeller. The drive unit comprising a drive magnet and a drive bearing between the drive magnet and the impeller assembly.
Owner:PROCYRION INC
Intravascular blood pump with external motor and centrifugal force-driven expansion of impeller blades and / or expandable and collapsible impeller housing
The present invention provides an intravascular blood pump system with an external motor and comprising an impeller housing and / or impeller blade(s) that may be expandable and collapsible. The blade(s) and / or impeller housing may be biased to expand or may be expanded by centrifugal forces generated during rotation of the impeller and blades an operatively connected rotational external motor.
Owner:CARDIOVASCULAR SYSTEMS INC
Systems and methods for reducing leaks from a catheter
Systems and methods are described herein relating to an intracardiac blood pump system comprising a pump, an elongate multi-lumen catheter, a compartment connected to the catheter, a first lumen, a conduit and a filter disposed within the conduit. At least one electronic element is located within the compartment. The conduit extends through an interface between the compartment and the catheter. The conduit is configured to allow gas to penetrate from a first end of the conduit through the first opening of the compartment to a second end of the conduit. The second end of the conduit is in fluid communication with a central lumen of the elongate multi-lumen catheter. The filter is configured to prevent egress of liquid from the multi-lumen catheter into the compartment after allowing flow of gas from the first end of the conduit through the second end of the conduit and into the multi-lumen catheter.
Owner:ABIOMED INC
Blood pump housing component
Blood pump assemblies and methods of manufacturing and operating blood pump assemblies are provided. The blood pump assembly includes a pump and an impeller blade rotatably coupled to the pump. The blood pump assembly also includes a pump housing component sized for passage through a body lumen and coupled to the pump. The pump housing component includes a peripheral wall extending about a rotation axis of the impeller blade. The peripheral wall includes an inner peripheral wall surface and an outer peripheral wall surface. The peripheral wall also includes one or more blood exhaust apertures. Each blood exhaust aperture in the one or more blood exhaust apertures is defined by an inner aperture edge and an outer aperture edge. Each inner aperture edge is chamfered between the inner peripheral wall surface and the outer peripheral wall surface.
Owner:ABIOMED INC
Centrifugal blood pump with hydrodynamic bearing
A centrifugal blood pump without a mechanical bearing comprises a pump casing (1), an impeller (9) arranged in the pump casing rotatably about the central axis and freely movable axially and radially within a limited clearance. The impeller has per-manent magnets or permanently magnetized magnetic regions (N / S) which cooperate with an electromagnetic drive to set the impeller rotating. A circular wall (12) or circularly arranged wall sections are provided within the pump casing, their inner surfaces defining a radial clearance together with the outer circumference of the impeller to form a hydrodynamic radial bearing for the impeller.
Owner:ABIOMED EUROPE GMBH
Tube for ventricular assist device
Apparatus and methods are described including a ventricular assist device that includes a tube configured to traverse a subject's aortic valve. The tube defines a generally-cylindrical central portion, and a proximal conical portion that narrows from a proximal end of the central portion to a proximal end of the tube. The tube defines one or more blood inlet openings in a vicinity of a distal end of the tube, and one or more blood outlet openings that extend axially from the central portion of the tube at least partially into the proximal conical portion of the tube. A blood pump pumps blood into the tube from the subject's left ventricle through the one or more blood inlet openings, and from the tube into the aorta through the one or more blood outlet openings. Other applications are also described.
Owner:MAGENTA MEDICAL LTD
Blood pump
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.
Owner:ABIOMED EUROPE GMBH
Intravascular blood pump and hemodynamic support system with blood flow pulsatility validity monitoring and invalidity detection with alarm
A medical device with an implantable blood pump and a control and sensing unit configured to determine the flow rate generated by the blood pump when driven by an electric motor, wherein the flow rate is determined using peak-to-peak current data generated by the electric motor and, in some cases, associated heart rate data. In some embodiments, the validity of pulsatility of the resulting blood flow is determined and, if out of predetermined limits, an alarm may be actuated.
Owner:CARDIOVASCULAR SYSTEMS INC
Blood pump
The present invention relates to a blood pump (10), in particular intravascular blood pump. The blood pump (10) comprises a pump housing (12) having a blood flow inlet (14) and a blood flow outlet (16) connected by a passage (18), an impeller (20) disposed in said pump housing (12), a drive unit (26) configured to drive the impeller (20), and a bearing arrangement (40, 42) rotatably supporting the impeller (20), wherein the bearing arrangement (40, 42) comprises at least one pivot bearing (40).
Owner:ABIOMED EUROPE GMBH
Blood pump
The invention concerns a control device for controlling a blood flow of an intravascular blood pump for percutaneous insertion into a patient's blood vessel, the blood pump comprising a pump unit with a drive unit for driving the pump unit and configured to convey blood from a blood flow inlet towards a blood flow outlet, wherein the control device is configured to operate the blood pump in a selectable zero-flow control mode, wherein a blood flow command signal is selected, and the control device comprises a first controller and a second controller, wherein the first controller is configured to control the blood flow by adjusting a speed command signal for the drive unit, and the second controller is configured to control a drive speed of the drive unit.
Owner:ABIOMED EUROPE GMBH
Determination of cardiac parameters for modulation of blood pump support
The systems, devices, and methods presented herein use a blood pump to obtain measurements of cardiac function. The system can quantify the functioning 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 heart function parameters, such as left ventricular pressure, left ventricular end diastolic pressure, or cardiac power output. These parameters provide valuable information to a user regarding current cardiac function, as well as positioning and function of the blood pump. In some embodiments, the system can act as a diagnostic and therapeutic tool. Providing cardiac parameters in real-time, along with warnings about adverse effects and recommendations to support cardiac function, such as increasing or decreasing the volumetric flow rate of blood pumped by the device, administering pharmaceutical therapies, and / or repositioning the blood pump allow clinicians to better support and treat cardiovascular disease.
Owner:ABIOMED INC
Systems and methods for determining positioning of intracardiac devices
Systems and methods for determining the positioning of intracardiac devices, such as intracardiac blood pump assemblies, using electrical sensors configured to sense electrical potential as it propagates through the heart. In one example, the present technology provides an intracardiac device with one or more electrical sensors mounted thereon, and a controller configured to determine the absolute or relative location of the intracardiac device based on the timing, shape, and / or amplitude of the electrical signals received from the one or more sensors.
Owner:ABIOMED INC
Intracardiac percutaneous pump for circulatory support and related systems and methods
A device comprises an implantable blood pump receivable in a sheath for percutaneous delivery. The implantable blood pump comprises a collapsible impeller mounted in a collapsible impeller cage, and a drive device mounted in a housing. The housing is in connection between a first end of a catheter and the collapsible impeller cage. The drive device is adapted for rotating the collapsible impeller. A retractable support structure is adapted to extend from the catheter. The extended retractable support structure is adapted to engage with the wall of the aorta for allowing the implantable blood pump to be secured in the left ventricle. The collapsible impeller cage comprises an inlet and an outlet. The inlet is adapted to receive blood from the left ventricle. The outlet directs blood in the direction of the atrioventricular valve.
Owner:VENSSTREETCAREDICAL PTY LTD
Blood pump
An intravascular blood pump for percutaneous insertion into a patient's blood vessel is provided. The blood pump comprises a pump casing and an impeller arranged in the pump casing. The blood pump further comprises a drive unit for rotating the impeller, the drive unit comprising a plurality of posts. Each of the posts has an impeller-side end pointing towards the impeller with a front surface facing the impeller. A coil winding is disposed around each of the posts so as to create magnetic field lines running through the front surface of each of the posts. The front surface of at least one of the posts comprises a concavity in which the front surface is inclined downwards towards a central area of the front surface so as to concentrate at least a part of the magnetic field lines running through the front surface.
Owner:ABIOMED EUROPE GMBH
Method for pump start in a fully implanted LVAD system when multiple power sources may be present
A method of controlling operation of an implantable blood pump includes attempting to restart a stopped implantable blood pump for a predetermined number of attempts with either power from an internal battery of a controller in communication with the implantable blood pump or transcutaneous energy transfer system (TETS) power in communication with the internal battery and the implantable blood pump. Following the predetermined number of attempts, the method includes pausing attempting to restart the implantable blood pump and begin attempting to recharge the internal battery with TETS power.
Owner:BOSTON SCIENTIFIC SCIMED INC
Blood pump shaft bearing
A blood pump includes an impeller; a drive shaft coupled to the impeller and configured to rotate with the impeller; a motor configured to drive the impeller; and a bearing assembly disposed adjacent the motor and configured to receive an end of the drive shaft. The bearing assembly includes a bearing, where the end of the drive shaft is at least partially rounded, and the where the bearing includes a concave depression defined in a first side of the bearing, where the depression is configured to receive the end of the drive shaft. The bearing assembly may include a lubricant chamber configured to hold a lubricant.
Owner:BOSTON SCIENTIFIC SCIMED INC
Blood pump
A blood pump comprises a pump section and a flow cannula. A proximal end portion of the flow cannula is connected to the pump section such that blood can enter the blood flow inlet, and a distal end portion of the flow cannula includes at least one blood flow-through opening for blood to enter the flow cannula. The distal end portion comprises an enlarged diameter portion, with at least a major portion of the blood flow-through opening being disposed in the enlarged diameter portion. The blood pump further comprises a sleeve overlapping the enlarged diameter portion. The sleeve has a structure that prevents its distal end from bending radially inwards into the blood flow-through openings.
Owner:ABIOMED EUROPE GMBH
Blood pump
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.
Owner:ABIOMED EUROPE GMBH
Flexible tip for transvalvular circulatory support device
Various aspects of the present disclosure are directed towards apparatuses, systems, and methods that may include a blood pump. The blood pump may include a flexible distal tip having a distal end segment, an intermediate segment, and a proximal segment, each segment having various shapes and / or hardness. The blood pump may include a cannula and a can element coupling the flexible distal tip to the cannula.
Owner:BOSTON SCIENTIFIC SCIMED INC
Blood pump with flow cannula
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.
Owner:ABIOMED EUROPE GMBH
Blood pump
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. At least a portion of the intermediate portion of the outflow cannula has an outer diameter that is larger than an outer diameter of the pump casing.
Owner:ABIOMED EUROPE GMBH
Motor cables for intravascular blood pumps
Systems and methods for providing hemodynamic support to a patient with an intravascular blood pump are disclosed. In some implementations, the blood pump includes a motor and an improved motor cable for delivering electrical power to the motor. The motor includes a stator with one or more coils. The motor cable includes one or more electrical conduits. The motor cable also includes a tail portion and a head portion. In some implementations, the head portion may have an O-shape or a C-shape. The motor cable may reduce the complexity of assembling the blood pump. For example, the motor cable may reduce the risk of shorting the one or more coils and / or the one or more electrical conduits.
Owner:ABIOMED INC
Blood pump with capability of electrocardiogram (EKG) monitoring, defibrillation and pacing
A blood pump system includes a catheter, a pump housing disposed distal of a distal end of the catheter, a rotor positioned at least partially in the pump housing, a controller, and an electrode coupled a distal region of the blood pump. The electrode can be used to sense electrocardiogram (EKG) signals and transmit the signals to a controller of the blood pump. The operation of the blood pump can be adjusted based on the EKG signal and on cardiac parameters derived from the EKG signal. Further, the controller can determine a need for defibrillation or pacing of the patient's heart based on the signal and can administer treatment with electrical shocks to the heart via the electrode coupled to the blood pump. The use of an electrode with a blood pump already in place in the heart allows for more efficient and safer treatment of serious cardiac conditions.
Owner:ABIOMED INC
Systems and methods for controlling an implantable blood pump
Systems and methods for controlling an implantable pump are provided. For example, the exemplary controller for controlling the implantable pump may only rely on the actuator's current measurement. The controller is robust to pressure and flow changes inside the pump head, and allows fast change of pump's operation point. For example, the controller includes, a two stage, nonlinear position observer module based on a reduced order model of the electromagnetic actuator. The controller includes an algorithm that estimates the position of the moving component of the implantable pump based on the actuator's current measurement and adjusts operation of the pump accordingly. Alternatively, the controller may rely on position measurements and / or velocity estimations.
Owner:CORWAVE SA