Abstract: A blood pump assembly has a balloon disposed at a distal region and a driveline disposed at a proximal region and is capable of being employed to provide mechanical circulatory support (e.g., counterpulsation). A blood pump support apparatus has a support structure with a head region and a tail region that is removably disposable in the blood pump assembly. When the support structure is disposed in the blood pump assembly, the head region is disposed within the balloon. When the blood pump assembly is implanted in the descending aorta and the support structure is disposed in the blood pump assembly, forces act on the balloon that would cause the balloon to roll or fold upon itself along an angle with respect to the balloon's longitudinal axis. The head region of support structure opposes these forces.

Abstract: A blood pump assembly comprises a balloon defining an elongated inflatable chamber with an opening at the proximal end. The proximal region of the balloon is substantially cylindro-conically shaped, and tapering toward the proximal end of the balloon, the central region of the balloon is substantially cylindrically shaped with a substantially uniform exterior diameter. The distal region of the balloon is substantially cylindro-conically shaped, the distal region of the balloon tapering toward the distal end of the balloon. The length of the distal region of the balloon is greater than approximately 15% of the combined length of the proximal and central regions of the balloon. A driveline may be coupleable to the opening and have a connection element disposed at a proximal end of the driveline. A radio opaque marker may be integrated into the driveline at a distal end of the driveline.

Abstract: Various examples are directed to isolated analog-to-digital converter (ADC) circuits comprising a first side that is separated from a second side by an isolator. A first ADC positioned on the first side may be configured to convert a first analog input signal to a first side multi-bit digital signal. A digital modulator on the first side may be configured to convert the first side multi-bit digital signal to a first single-bit stream. A first filter positioned on the second side may be configured to receive the first single-bit stream across the first isolator and to generate a first reconstructed multi-bit digital signal using the first single-bit stream.

Abstract: Various examples are directed to isolated analog-to-digital converter (ADC) circuits comprising a first side that is separated from a second side by an isolator. A first ADC positioned on the first side may be configured to convert a first analog input signal to a first side multi-bit digital signal. A digital modulator on the first side may be configured to convert the first side multi-bit digital signal to a first single-bit stream. A first filter positioned on the second side may be configured to receive the first single-bit stream across the first isolator and to generate a first reconstructed multi-bit digital signal using the first single -bit stream.