Abstract: Blood stagnation within a left atrial appendage (LAA) may be reduced by creating movement within the LAA. A variety of different actuatable devices, including magnetically actuated devices, may be implanted within the LAA. The actuatable device may be caused to become actuated, thereby causing the motion within the LAA. In some cases, causing the actuatable device to become actuated may include application of a magnetic field. In some cases, causing the actuatable device to become actuated may include subjecting the actuatable device to blood flow within the LAA.

Abstract: Blood stagnation within a left atrial appendage (LAA) may be reduced by creating movement within the LAA. A variety of different actuatable devices, including magnetically actuated devices, may be implanted within the LAA. The actuatable device may be caused to become actuated, thereby causing the motion within the LAA. In some cases, causing the actuatable device to become actuated may include application of a magnetic field. In some cases, causing the actuatable device to become actuated may include subjecting the actuatable device to blood flow within the LAA.

Abstract: Systems and methods of the present disclosure provide a compact camera device that utilizes one or more spatially varying polarizers, such as one or more multi-twist retarders, to provide compact designs with improved performance. The spatially varying polarizers may be used to multiplex light received by a camera, which allows optics to modify (e.g., focus) incident light in a polarization specific manner to provide better resolution, reduced form factor, or other advantages.

Abstract: The present disclosure related generally to techniques for improving the performance and efficiency of display systems, such as laser scan beam display systems or other types of display systems (e.g., micro-displays). Display systems of the present disclosure may include a polarization compensation optic, such as a spatially varying polarizer, that provides phase retardation that varies as a function of position, which provides polarization compensation to provide light that is well suited for a polarization sensitive optic of the display system, such as a waveguide-based optical system, a pancake optical system, a birdbath optical system, a coating-based optical system, etc. The display systems of the present disclosure may be components of head-mounted display systems, or other types of display systems.

Abstract: Systems and methods for tracking the position of one or more objects, such as components of a head-mounted display (HMD) system. One or more objects may carry a plurality of angle sensitive optical detectors. Each of the optical detectors may include an optical subsystem that is configured to vary at least one of phase or intensity of light imparted on the optical detector. The optical subsystem may include one or more of diffractive optical elements, lens arrays, intensity masks, phase masks, or the like. The optical detectors may include a photodetector that includes a plurality of optically active areas, such as a quadrant cell photodetector, an image sensor with an array of photodiodes, etc. Control circuitry may cause light sources to emit light, and may receive sensor data from the plurality of optical detectors. Control circuitry may process the sensor data to track a position of one or more objects.

Abstract: Example medical devices and methods of making example medical devices are disclosed. An example medical device includes a frame configured to be secured to cardiac tissue, wherein the frame includes a fatigue resistant nickel-titanium alloy that is heat set at a temp in the range of 450-550 degrees Celsius.

Abstract: An implant for occluding a left atrial appendage may include an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes an attachment point configured to secure the expandable framework to a delivery device, and an occlusive element disposed on a proximal portion of the expandable framework, wherein the occlusive element covers the attachment point.

Abstract: The present disclosure is related generally to techniques for improving the performance and efficiency of display systems, such as laser scan beam display systems or other types of display systems (e.g., micro-displays) of an HMD system or other device. Display systems of the present disclosure may utilize polarization multiplexing that allow for improved optimization of diffraction optics. In at least some implementations, a display system may selectively polarize light dependent on wavelength (e.g., color) or field of view. An optical combiner may include polarization sensitive diffractive optical elements that are each optimized for a subset of colors or portions of an overall field of view, thereby providing improved correction optics for a display system.

Abstract: Methods and systems relating generally to information displays, and more particularly to systems and methods for backlight assemblies for information displays that provide improved efficiency. A backlight assembly may include a light guide that is sized and dimensioned to illuminate only a portion of the display that is imaged or focused by an optics system. The backlight assembly may include a light source, such as one or more laser diodes, that directs a light beam into the light guide wherein the beam reflects via total internal reflection. The light guide may include a plurality of light extraction features configured to diffuse light toward a display panel, such as a liquid crystal display (LCD) panel.

Abstract: Systems and methods for tracking the position of one or more head-mounted display (HMD) system components of an HMD system. The HMD components may carry a plurality of angle sensitive detectors or other types of detectors. The HMD system may be operative to detect corrupted position tracking samples, allowing such samples to be ignored, thereby improving the position tracking process. Control circuitry causes light sources to emit light according a specified pattern, and receives sensor data from the plurality of detectors. Control circuitry may process the sensor data, for example using machine learning or other techniques, to track a position of one or more HMD components.

Abstract: An example occlusive implant is disclosed. The example occlusive implant includes an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes a plurality of strut members circumferentially spaced around a longitudinal axis of the expandable framework, wherein one or more of the plurality of strut members includes a first twisted portion and a face portion. The occlusive implant also includes a plurality of fixation members disposed along the face portion of one or more of the plurality of strut members.

Abstract: Implanting a left atrial appendage closure (LAAC) device within a patient's left atrial appendage (LAA) may include advancing an assembly to a position proximate the patient's LAA. The assembly includes an LAAC device releasably secured to an LAAC delivery catheter, and one or more ultrasound transducers disposed relative to the LAAC delivery catheter. Once the LAAC device is deployed, the ultrasound transducers may be rotated relative to the LAAC device to look for leaks between the LAAC device and the LAA. In some cases, the LAAC device may be repositioned relative to the LAA when excessive leaks are found via ultrasound.

Abstract: An implantable medical device such as, but not limited to an LAAC (left atrial appendage closure) device includes an expandable frame that is moveable between a collapsed configuration for delivery and an expanded configuration for deployment, the expandable frame having a variable diameter in the expanded configuration. The expandable frame includes a central member, and a grouping of arcuate articulating members joined at one end to the first central member, each of the first grouping of arcuate articulating members extending outwardly from the first central member. A covering is disposed relative to the first grouping of arcuate articulating members.

Abstract: Solutions for reducing irritation and/or trauma which may result upon contact of an implanted implantable device with tissue surrounding or adjacent to the implantable device. Various embodiments include features which allow a tangential or otherwise atraumatic contact of the implantable device with the tissue, in contrast with a sharper contact which may occur with prior art implantable devices. The broad principles are applicable to annuloplasty devices, and have other broader applications as well.

Abstract: An implantable medical device such as but not limited to a left atrial appendage closure (LAAC) device includes an expandable frame that is movable between a collapsed configuration for delivery and an expanded configuration for deployment. The expandable frame may include a plurality of articulating members that are biased into the expanded configuration. The expandable frame may include a biasing member. The LAAC device includes a membrane or covering that spans across an end of the expandable frame. In some cases, the LAAC device may be adjustable to better fit a non-circular ostium.

Abstract: An implantable medical device includes an expandable frame that is expandable between a collapsed configuration for delivery and an expanded configuration for deployment, the expandable frame including a periphery defined by the expandable frame. A covering spans at least part of the expandable frame. An expandable element is secured relative to the periphery, the expandable element is adapted to seal against an irregular body opening such as an irregular-shaped ostium of a patient's LAA (left atrial appendage).

Abstract: Provided is an apparatus that includes a first reservoir system including a first fluid reservoir configured to be in fluid communication with a nozzle supply system during operation of the nozzle supply system, a second reservoir system including a second fluid reservoir configured to be, at least part of the time during operation of the nozzle supply system, in fluid communication with the first reservoir system, a priming system configured to produce a fluid target material from a solid matter, and a fluid control system fluidly connected to the priming system, the first reservoir system, the second reservoir system, and the nozzle supply system. The fluid control system is configured to, during operation of the nozzle supply system: isolate at least one fluid reservoir and the nozzle supply system from the priming system, and maintain a fluid flow path between at least one fluid reservoir and the nozzle supply system.

Abstract: An implantable medical device such as but not limited to a left atrial appendage closure (LAAC) device includes an expandable frame that is movable between a collapsed configuration for delivery and an expanded configuration for deployment. The expandable frame may include a plurality of articulating members that are biased into the expanded configuration. The expandable frame may include a biasing member. The LAAC device includes a membrane or covering that spans across an end of the expandable frame.

Abstract: A medical device system may include an occlusive implant including a central hub and a plurality of elongate members configured to shift between extended and radially expanded configurations. The central hub includes a plurality of conduits extending from a proximal end to a radially outward facing surface. The plurality of elongate members is configured to extend through the conduits in the radially expanded configuration. An implant remodeling tool may include an elongate sheath having at least one lumen, a plunger guide, and a plurality of plunger shafts extending from the at least one lumen through the plunger guide. The plunger guide is configured to direct the plunger shafts radially outward as the plunger shafts are advanced distally. The plunger shafts are configured to engage a medical implant and urge at least a portion of the implant radially outward.

Abstract: An implant for occluding a left atrial appendage may include an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes an attachment point configured to secure the expandable framework to a delivery device, and an occlusive element disposed on a proximal portion of the expandable framework, wherein the occlusive element covers the attachment point.