A method of managing multiple power sources for an implantable blood pump includes operating the implantable blood pump with both power from an internal battery, the internal battery being disposed within an implantable controller and in communication with the implantable blood pump, and with transcutaneous energy transfer system (TETS) power in communication with the implantable blood pump, if TETS power is available.

Devices and methods for blood flow enhancement and hemodynamic power monitoring are provided. A blood flow enhancement device includes a pump system configured to be coupled to a central vasculature of a subject during cardiopulmonary resuscitation (CPR). The pump system includes a pumping mechanism configured to increase forward blood flow generated during the CPR while substantially limiting backward blood flow generated during the CPR. The pumping mechanism being operated concurrently with the CPR. The hemodynamic power monitor is configured to control a chest compression device and an active valve.

Methods and devices for implanting a ventricular assist device employ a coupler that engages an aperture formed in a heart wall and provides a conduit by which blood is pumped from the ventricle via the ventricular assist device. A method includes penetrating a distal end of a delivery device through a wall of a heart into a ventricle of the heart to form an aperture having a diameter in the wall. A coupler is deployed from the delivery device so that the coupler engages the aperture, expands the diameter of the aperture, and forms a conduit for a flow of blood from the ventricle. The delivery device is removed from the ventricle by retracting the delivery device through the conduit. The ventricular assist device is coupled to the coupler to receive the flow of blood from the ventricle and pump the flow of blood to assist circulation in the patient.

Methods and devices for implanting a ventricular assist device employ a coupler that engages an aperture formed in a heart wall and provides a conduit by which blood is pumped from the ventricle via the ventricular assist device. A method includes penetrating a distal end of a delivery device through a wall of a heart into a ventricle of the heart to form an aperture having a diameter in the wall. A coupler is deployed from the delivery device so that the coupler engages the aperture, expands the diameter of the aperture, and forms a conduit for a flow of blood from the ventricle. The delivery device is removed from the ventricle by retracting the delivery device through the conduit. The ventricular assist device is coupled to the coupler to receive the flow of blood from the ventricle and pump the flow of blood to assist circulation in the patient.

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.

A controller is provided to determine a ventricular filling phase slope as an indicator of high pulmonary capillary wedge pressure and/or cardiac index. Flow rate values describing a blood flow rate through a ventricular assist device are received. A ventricular filling phase segment is identified from a portion of the received flow rate values. A slope of the received flow rate values during the identified ventricular filling phase segment is determined. The determined slope is compared to a predetermined threshold value. When the determined slope exceeds the predetermined threshold value based on the comparison, a warning is triggered regarding an elevated pulmonary capillary wedge pressure or a low cardiac index value.

A ventricular assist device controller holding garment assembly includes a shirt that has a front side, a back side, a first lateral side, a second lateral side, a right sleeve, and a left sleeve. The shirt has a neck opening and a torso opening and bounds an interior space. A front pocket is positioned on an outer surface of the front side of the shirt. The front pocket is positioned nearer to the torso opening than the neck opening and has an upper edge comprising an access opening of the front pocket. The front pocket has an exterior wall. A shield comprising a heat resistant material is positioned between the exterior wall and the interior space. A controller receiving space is defined between the exterior wall and the shield and holds a controller for a ventricular assist device.

A blood pump housing device designed to enclose and protect a total artificial heart when implanted in a subject is disclosed. The blood pump housing device comprises a first and second artificial heart pump receiving part (3a, 3b) configured to receive and partly enclose a first and a second artificial heart pump (20a, 20b) of a total artificial heart (TAH); and a first and second pump actuation enclosing part (4a, 4b) configured to partly enclose a first and second pump actuation means (60a, 60b), said artificial heart pump receiving parts (3a, 3b) and pump actuation means enclosing parts (4a, 4b) are arranged to connect to each other in a leak-free manner.

Described are systems and methods for administration of nitric oxide (NO) with use of left ventricular assists devices (LVADs), as well as systems and methods for monitoring the NO delivery devices and/or the LVAD.

A heart pump assembly includes an elongate catheter with a proximal portion and a distal portion, a rotor at the distal portion of the elongate catheter, a driveshaft, and a bearing. The rotor can include an impeller blade shaped to induce fluid flow in a first axial direction. The drive shaft may be coupled to or integrally formed with a proximal end of the rotor and can include a pump element formed in a surface of the drive shaft. The bearing can include a bore into which the drive shaft extends. The pump element is shaped so as to induce fluid flow through the bore in a second axial direction which can be the same or opposite to the first axial direction.