Abstract: A backlight assembly includes a display panel (such as a liquid crystal display), an optics system for focusing a portion of the display onto an eye of a user, a light guide, a plurality of extraction features positioned on a surface of the light guide, and at least one laser diode for directing light into the light guide. The light guide is sized and dimensioned to illuminate only a portion of the display that is focused by the optics system; with the plurality of light extraction features configured to diffuse light toward the display panel for back illuminating the display panel.

Abstract: Methods, systems, and apparatuses for identifying key moments of a media asset are described herein. Key moments may be identified, for example, based on analyzing data associated with the media asset and user engagement data associated with the media asset. The data associated with the media asset may be provided to a machine learning model configured to determine one or more first segments of the media asset that satisfy a first threshold. The user engagement data may be analyzed to determine one or more second segments of the media asset that satisfy a second threshold. A compilation of segments of the media asset, representing the key moments thereof, may be generated based on the one or more first segments and the one or more second segments.

Abstract: Using electrically-controllable lenses to provide a head-mounted display (HMD) with a diopter adjustment capability is disclosed. The electrically-controllable lenses may be coupled, or couplable, to a pair of lens tubes of the HMD and configured to direct light emitted by a display panel(s) of the HMD toward eyes of a user wearing the HMD. A processor(s) may be configured to execute computer-executable instructions stored in memory to provide a control signal(s) to the electrically-controllable lens(es) to adjust an optical power of the electrically-controllable lens(es).

Abstract: A medical system may include a left atrial appendage closure device including an expandable framework configured to shift between a collapsed delivery configuration and an expanded deployed configuration. The expandable framework has an outer diameter in the expanded deployed configuration. The medical system also includes a cinching member configured to shift between a compressed delivery configuration and an expanded configuration. The cinching member is ring shaped with an inner diameter in the expanded configuration that is larger than the outer diameter of the left atrial appendage closure device, and the cinching member has a plurality of tissue engagement elements defined on an outer surface thereof.

Abstract: A delivery system for delivering, adjusting, and/or recapturing a stent-valve includes an inner shaft and an expandable stent-valve coupled to the inner shaft. The stent-valve has an upper portion, a lower portion, and a valve. The delivery system also includes a distal sheath disposed over at least the lower portion, a proximal sheath disposed over at least the upper portion, and at least one cinching member coupled to the stent-valve and extending through one of the inner shaft, the distal sheath, or the proximal sheath. The upper and lower portions of the stent-valve are configured to move to an expanded configuration when the proximal and distal sheaths are withdrawn, respectively. After at least a portion of the stent-valve has been moved to the expanded configuration, the at least one cinching member is configured to at least partially radially compress at least a portion of the stent-valve.

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 eye tracking system for a head-mounted display (HMD) device. The system includes a lens assembly, an optical tube assembly, and an optical light guide. The optical tube assembly is coupled to the lens assembly, supporting the lens assembly and ensuring optical alignment with a display panel of the HMD device. The lens assembly is positioned close to the front end of the optical tube assembly, which is near the user's eye during use. The optical light guide transports light and is coupled to the optical tube assembly. The optical light guide includes a light input feature positioned rearward of the front end of the optical tube assembly that is configured to receive light from a light source. The optical light guide also includes a plurality of light output features positioned proximate to the front end of the optical tube assembly.

Abstract: An example occlusive implant is disclosed. The example occlusive implant includes an expandable framework configured to shift between a first configuration and an expanded configuration and a fixation member disposed along the expandable framework. The fixation member includes a first engagement portion and an anchor portion. Further, the first engagement portion is designed to be secured to the expandable framework and the anchor portion extends away from an outer surface of the expandable framework.

Abstract: A pacing system configured to sense cardiac activity and to deliver pacing therapy to a patient's heart. The pacing system may comprise a first electrode configured to be positioned in a first chamber of the heart and configured to deliver a first pacing therapy to the first chamber of the heart and a second electrode configured to be positioned in the left atrial appendage and configured to deliver a second pacing therapy to the left atrial appendage. The processing module of the pacing system may be configured to time a delivery of the first pacing therapy based on a first timing fiducial and a delivery of the second pacing therapy based on a determined pacing delay between the first pacing therapy and the second pacing therapy. The determined pacing delay may be configured to maximize a flow of blood into and/or out of the left atrial appendage.

Abstract: Systems and methods for providing an optical system in a head-mounted display (HMD) that is operable to modify virtual image light to correct for one or more vision conditions of a user's eyes. The optical system includes a left optical subsystem for the left eye and a right optical system for the right eye. Each optical subsystem includes at least one correction portion having a diffractive optical element assembly. Selective electrical or mechanical control or adjustment of the diffractive optical element assembly provides for the correction of vision conditions in the user's eyes.

Abstract: A medical device for causing blood flow within a left atrial appendage (LAA) includes a flow energy capture element adapted to capture energy caused by movement within the heart. A transmission element is operably coupled to the flow energy capture element, the transmission element adapted to utilize the captured energy to cause blood flow within the LAA.

Abstract: Methods and systems relating generally to information displays, and more particularly to systems and methods for backlight assemblies for information displays that include light expanding structures. A backlight assembly may include light expander structures that include a plurality of layer sets, wherein each layer set includes a reflective polarizer layer and a wave retarder layer. The layer sets may together be operative transform point light source, such as a laser light beam, into a surface light source for use as a backlight for various types of information displays.

Abstract: A left atrial appendage (LAA) ligation device is adapted for ligating the LAA via a trans-septal approach, the LAA including an ostium. The LAA ligation device includes a spiral ligation element extending from an end point disposed at a periphery of the spiral ligation element to a center point of the spiral ligation element, the spiral ligation element having a diameter defined by the periphery and a length defined between the periphery and the center point. A delivery device is adapted to releasably secure the spiral ligation element and to enable rotation of the spiral ligation device.

Abstract: A portal axle assembly is an enclosed drive system that is attached to a vehicle's axle, steering or other linkages, relocating vehicle power from an input axle shaft to a displaced (usually lower) output shaft. The output shaft, in turn, drives an attached unit bearing hub assembly that provides power to the vehicle's wheel. The inventive approach of this gearless, direct-drive, chain-and-sprocket design represents a unique and simplified approach that differs significantly from the multi-gear portal technology that is widely utilized in other portal axle designs. The gearless portal is designed to be compatible with floating axle shafts, or not on both the input and output ports, depending on use-case. Differential sprocket sizing provides for changes to drive ratio based on application. Additionally, the design of the portal housing provides for adaptation for attachment to a wide variety of OEM and aftermarket axle housing, suspension, steering linkage and other attachment methods.

Abstract: Systems and methods for tracking the position of a head-mounted display (HMD) system component. The HMD component may carry a plurality of angle sensitive detectors that are able to detect the angle of light emitted from a light source. The HMD component may include one or more scatter detectors that detect whether light has been scattered or reflected, so such light can be ignored. Control circuitry causes light sources to emit light according a specified pattern, and receives sensor data from the plurality of angle sensitive detectors. The processor may process the sensor data and scatter detector data, for example using machine learning or other techniques, to track a position of the HMD component. An angle sensitive detector may include a spatially-varying polarizer having a position-varying polarizing pattern and one or more polarizer layers that together are operative to detect the angle of impinging light.

Abstract: An apparatus for thermal ablation testing is provided. The apparatus comprises: a chamber; an optically transparent window in the chamber; a sample holder inside the chamber; a test sample in the sample holder; a number of bare-wire thermocouples connected to the test sample, wherein the thermocouples generate temperature data in the form of voltage; a mass balance inside the chamber, wherein the mass balance is configured to hold the sample holder and dynamically detect changes in mass of the test sample; an external radiant heat source configured to heat the test sample through the window; and a pyrometer directed at the test sample.

Abstract: Calibrating an eye tracking system based at least in part on a user interface element(s) presented on a display panel(s) of a head-mounted display (THMID) is disclosed. A processor(s) may present a user interface element on a display panel(s) of a HMD, and may receive, from a handheld controller, user input data indicating that a user wearing the H/ID has provided user input associated with the user interface element via the handheld controller. In response to the receiving of the user input data from the handheld controller, the processor(s) may receive, from an eye tracking sensor(s) of the HMD, eye data associated with one or more eyes of the user, and may calibrate the eye tracking system based at least in part on the eye data and location data indicating a location on the display panel(s) where the user interface element is presented.

Abstract: A left atrial appendage closure (LAAC) device includes an expandable member that defines a profile of the LAAC device and is moveable between a minimal diameter and a maximum diameter, the expandable member adapted to move to a deployment diameter that is intermediate the minimal diameter and the maximum diameter and that is limited by dimensions of a left atrial appendage (LAA) in which the LAAC device is deployed. A fabric extends over at least a portion of the expandable member and is adapted to accommodate changes in the expandable member between the minimal diameter and the increased diameter.

Abstract: An occlusive implant system may include a catheter having a lumen extending from a proximal opening to a distal opening, a core wire slidably disposed within the lumen, and an occlusive implant having an expandable framework configured to shift between a collapsed configuration and an expanded configuration, and an occlusive element disposed on the expandable framework. The expandable framework may include a plurality of anchor members extending radially outward from the expandable framework, at least some of the plurality of anchor members each have a barb projecting circumferentially therefrom. The occlusive implant may be releasably connected to a distal portion of the core wire.