Abstract: A controller for an implantable blood pump, having processing circuitry configured to control an operating speed of an impeller of the implantable blood pump. The processing circuitry being further configured to control activation and deactivation of a sleep mode. During the sleep mode the processing circuitry being configured to measure a level of suction by detecting suction during a predetermined time interval, recording the time at which suction occurred during the predetermined time interval, and generating a graph demonstrating the measured level of suction. The measured level of suction being a percentage of time the implantable blood pump experienced suction during the predetermined time interval. The processing circuitry being configured to reduce the operating speed of the impeller if the measured level of suction exceeds a predetermined threshold.

Abstract: A method of detecting hypertension in a patient having an implantable blood pump, the method includes operating the implantable blood pump at a first pump set speed during a first period of time. A first flow rate minimum during a cardiac cycle of the patient is measured. during the first period of time. The first pump set speed is reduced by at least 200 rpm during a second period of time after the first period of time to a second pump set speed, the second period of time being less than the first period of time. A second flow rate minimum is measured during a cardiac cycle during the second period of time. If the second flow rate minimum decreases during the second period of time at the second pump set speed by more than a predetermined amount, an alert is generated indicating a presence of hypertension.

Abstract: Medical device systems include processing circuitry configured to acquire sensed cardiac signals associated with cardiac activity of a heart of a patient, and to analyze the sensed cardiac signals to determine if a noise signal is present within the cardiac signals.

Abstract: A controller for an implantable blood pump including processing circuitry in communication with the implantable blood pump and configured to generate at least one preventative alert.

Abstract: A method of detecting hypertension in a patient having an implantable blood pump, the method includes operating the implantable blood pump at a first pump set speed during a first period of time. A first flow rate minimum during a cardiac cycle of the patient is measured during the first period of time. The first pump set speed is reduced by at least 200 rpm during a second period of time after the first period of time to a second pump set speed, the second period of time being less than the first period of time. A second flow rate minimum is measured during a cardiac cycle during the second period of time. If the second flow rate minimum decreases during the second period of time at the second pump set speed by more than a predetermined amount, an alert is generated indicating a presence of hypertension.

Abstract: A method of determining a cumulative presence of suction in a patient having an implanted blood pump including determining whether at least one suction event occurred during a predetermined time interval for a predetermined number of time intervals and determining the cumulative presence of suction by dividing a sum of a number of predetermined time intervals in which at least one suction event occurred by the predetermined number of time intervals.

Abstract: A controller for an implantable blood pump includes processing circuitry configured to initiate a suction response algorithm if a combination of a number of detected suction events multiplied by a suction event variable and a number of non-suction events multiplied by a non-suction event variable exceed a predetermined threshold.

Abstract: A controller for an implantable blood pump includes processing circuitry configured to initiate a suction response algorithm if a combination of a number of detected suction events multiplied by a suction event variable and a number of non-suction events multiplied by a non-suction event variable exceed a predetermined threshold.

Abstract: Systems and methods are described herein for selection of a cardiac cycle, or heartbeat, from a plurality of cardiac cycles monitored over time. The cardiac cycle may be selected using various metrics including a single-cycle metric and a cycle-series metric. Further, the selected cardiac cycle may be used for further cardiac analysis (for example, to generate electrical activation times).

Abstract: A controller for an implantable blood pump, having processing circuitry configured to control an operating speed of an impeller of the implantable blood pump. The processing circuitry being further configured to control activation and deactivation of a sleep mode. During the sleep mode the processing circuitry being configured to measure a level of suction by detecting suction during a predetermined time interval, recording the time at which suction occurred during the predetermined time interval, and generating a graph demonstrating the measured level of suction. The measured level of suction being a percentage of time the implantable blood pump experienced suction during the predetermined time interval. The processing circuitry being configured to reduce the operating speed of the impeller if the measured level of suction exceeds a predetermined threshold.

Abstract: A system for detecting a suction condition in an implantable blood pump including a controller in communication with the blood pump. The controller includes a control circuit configured to calculate a present value during a time period, the present value corresponding to a pump speed divided by a pump current, determine a plurality of data values during the time period based on the present value, and determine a suction detection threshold value using the plurality of data values. The control circuit is also configured to compare the present value during the time period to the suction detection threshold value and generate an alert when the present value exceeds the suction detection threshold value on a plurality of instances during the time period, the alert corresponding to a suction condition.

Abstract: Systems and methods are described herein for determining whether or not each of a plurality of cardiac signals monitored from a plurality of electrodes is stable. A dispersion signal may be generated based on the plurality of cardiac signals, and low dispersion time period may be selected within which the cardiac signals may be analyzed for stability.

Abstract: A system for detecting a suction condition in an implantable blood pump including a controller in communication with the blood pump. The controller includes a control circuit configured to calculate a present value during a time period, the present value corresponding to a pump speed divided by a pump current, determine a plurality of data values during the time period based on the present value, and determine a suction detection threshold value using the plurality of data values. The control circuit is also configured to compare the present value during the time period to the suction detection threshold value and generate an alert when the present value exceeds the suction detection threshold value on a plurality of instances during the time period, the alert corresponding to a suction condition.

Abstract: A controller for an implantable blood pump including processing circuitry in communication with the implantable blood pump and configured to generate at least one preventative alert

Abstract: A controller for an implantable blood pump, the implantable blood pump having an impeller.

Abstract: A controller for an implantable blood pump includes processing circuitry configured to initiate a suction response algorithm if a combination of a number of detected suction events multiplied by a suction event variable and a number of non-suction events multiplied by a non-suction event variable exceed a predetermined threshold.

Abstract: Medical device systems include processing circuitry configured to acquire sensed cardiac signals associated with cardiac activity of a heart of a patient, and to analyze the sensed cardiac signals to determine if a noise signal is present within the cardiac signals.

Abstract: A method of determining a cumulative presence of suction in a patient having an implanted blood pump including determining whether at least one suction event occurred during a predetermined time interval for a predetermined number of time intervals and determining the cumulative presence of suction by dividing a sum of a number of predetermined time intervals in which at least one suction event occurred by the predetermined number of time intervals.

Abstract: Medical device systems include processing circuitry configured to acquire sensed cardiac signals associated with cardiac activity of a heart of a patient, and to analyze the sensed cardiac signals to determine if a noise signal is present within the cardiac signals.

Abstract: A controller for an implantable medical device including a housing sized and configured to be received within a patient, the housing having a thermally conductive shell defining an exterior surface. At least a portion of the exterior surface of the thermally conductive shell defines at least one from the group consisting of a plurality of corrugations and a plurality of protuberances.