Abstract: A flexible drive shaft assembly is provided for an intravascular medical device, for example and without limitation, a blood pump, a rotational atherectomy device, or a rotational thrombectomy device. The blood pump embodiment provides an electric motor and a rotational impeller, with a rotational drive shaft disposed therebetween and configured to rotationally drive the impeller. The drive shaft is moved from an undeformed length to a deformed length when connected between the electric motor and the rotational impeller to provide a biasing force on the rotational impeller in the proximal direction to maintain the impeller in a desired axial or linear location. In other embodiments, drive shaft comprises a proximal section with a length and a spring constant and a distal section of relatively longer length and a relatively higher spring constant. In other embodiments, hypotube(s) and/or support mandrel(s) may be provided.

Abstract: Aspects of the disclosure include commanding an antenna to a first orientation relative to a structure that the antenna is mounted to, obtaining at least one measurement from at least one sensor, wherein the at least one measurement represents a first magnitude and a first direction of a displacement of the antenna relative to the first orientation, determining that the displacement of the antenna relative to the first orientation exceeds a threshold in terms of the first magnitude, the first direction, or a combination thereof, responsive to the determining that the displacement of the antenna relative to the first orientation exceeds the threshold, identifying at least one piezoelectric device to engage to cause the antenna to assume a second orientation relative to the structure, and responsive to the identifying, commanding the at least one piezoelectric device to engage to cause the antenna to assume the second orientation.

Abstract: A parapet anchor is provided. The parapet anchor includes a frame, at least one adjustment member and a davit mount. The frame is configured and arranged to fit around a portion of a parapet. The at least one adjustment member is movably coupled to the frame to selectively engage the parapet to secure the frame to the parapet. Moreover, the davit mount is coupled to the frame and is configured and arranged to support a davit. The davit in turn can be used as a support structure upon which a lifeline can be coupled.