Abstract: An unmanned aerial vehicle with deployable components (UAVDC) may comprise a foldable propeller blade with a locking mechanism. Foldable propeller blades may have a stowed configuration and a deployed configuration relative to the UAVDC, and the foldable propeller blades may pivot about a hinge to move between configurations. In the deployed configuration, the foldable propeller may experience forward folding forces acting upon it. The locking mechanism may lock the foldable propeller blade in the deployed configuration. The locking mechanism may keep the foldable propeller locked into place to prevent forward folding tendency.

Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides methods of preparing nanostructures with fluoride passivation. The disclosure also provides methods of preparing nanostructures with fluoride and amine passivation. The nanostructures have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are nanostructures prepared using the methods. And, nanostructure films and molded articles comprising the nanostructures are also provided.

Abstract: A steerable delivery system is provided for delivering a replacement heart valve to a native heart valve location. The steerable delivery system includes an outer sheath assembly having a capsule along a distal end portion for retaining the replacement heart valve in a compressed configuration. The capsule is constructed to provide both compression resistance and flexibility. The capsule may be formed with an outer polymer layer, a metal middle layer located on a radially inner surface of the outer polymer layer, and an inner liner located on a radially inner surface of the metal middle layer. A fluoroelastomer layer is provided for bonding the inner liner to the metal middle layer. The metal middle layer is preferably a metal hypotube.

Abstract: A method of using a medical device to take multiple electrocardiograms (ECG) and, if needed, to be converted into an automated external defibrillator (AED). The medical device is configured to take the ECG without deploying any AED electrode pad and, if convenient, to be held by a person so that the person can simply put fingers from both hands on two contacts to take the ECG. Alternatively, the two contacts may be placed on the person's bare skin. The medical device is configured to separate into two components: An AED body and a cartridge. A computer for viewing the ECG may be built into the medical device or may be connected to the medical device. Conversion of the medical device to an AED occurs by removing a first AED electrode pad and a second AED electrode pad from a flattened and stacked arrangement within the cartridge.

Abstract: Devices, systems and methods are described herein to provide improved steerability for delivering a prosthesis to a body location, for example, for delivering a replacement mitral valve to a native mitral valve location. The steerable delivery system can contain a steerable rail configured for multi-plane bending to direct a distal end of the delivery system.

Abstract: A delivery system includes a suture attachment mechanism for maintaining a connection to a heart valve after initial deployment, thereby allowing recapture of the heart valve if desired. A plurality of suture portions is provided along a distal end portion of the delivery system, each suture portion having a first end fixed to the delivery system and a second end releasably coupled to a retention member on the delivery system. A knob on a handle of the delivery system is actuated for causing the second end of each suture portion to be released from its respective retention member, thereby allowing the suture portions to be decoupled from the heart valve. The suture portions are located only along a distal end portion of the delivery system for improving reliability and consistency.

Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides methods of preparing nanostructures with fluoride passivation. The disclosure also provides methods of preparing nanostructures with fluoride and amine passivation. The nanostructures have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are nanostructures prepared using the methods. And, nanostructure films and molded articles comprising the nanostructures are also provided.

Abstract: In some aspects, electrodes can include a front portion shaped to matingly engage a nozzle of the plasma cutting system, the front portion having a first end comprising a plasma arc emitter disposed therein; and a rear portion thermally connected to a second end of the front portion, the rear portion shaped to slidingly engage with a complementary swirl ring of the plasma cutting system and including: an annular mating feature extending radially from a proximal end of the rear portion of the electrode to define a first annular width to interface with the swirl ring, the annular mating feature comprising a sealing member configured to form a dynamic seal with the swirl ring to inhibit a flow of a gas from a forward side of the annular mating feature to a rearward side of the annular mating feature.

Abstract: Disclosed are embodiments of delivery systems for delivery of replacement heart valves. This can include mitral, aortic, tricuspid, and pulmonary valves. The delivery systems can include one or more different components and configurations that advantageously improve placement of the replacement heart valves during the operation of the delivery system.

Abstract: Apparatuses and methods for loading and deploying implants from delivery apparatuses. The apparatuses in certain embodiments may comprise crimping devices for compressing an implant for insertion into a portion of a delivery apparatus. The apparatuses in certain embodiments may comprise features of delivery apparatuses allowing for improved loading and deployment of an implant from the delivery apparatuses.

Abstract: Devices, systems and methods are described herein to provide improved treatment of a tricuspid valve. Such treatment may include tricuspid valve replacement, which may include providing a prosthetic tricuspid valve within the tricuspid valve annulus. Delivery systems for delivering the prosthetic tricuspid valve to the tricuspid valve annulus are disclosed herein. Treatment may also include repair of the tricuspid valve.

Abstract: A consumable cartridge for a plasma arc torch is provided. The consumable cartridge includes an outer component defining a substantially hollow body, an inner component disposed substantially within the hollow body of the outer component, and a hollow region between the rear portion of the inner component and the outer component. The inner component includes a forward portion configured to axially secure and rotatatably engage the outer component to the inner component and a rear portion substantially suspended within the hollow body of the outer component. The rear portion is axially secured and rotatably engaged with the outer component via the forward portion. The hollow region is configured to receive a torch head to enable mating between the rear portion of the inner component and a cathode of the torch head.

Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides methods of preparing nanostructures with fluoride passivation. The disclosure also provides methods of preparing nanostructures with fluoride and amine passivation. The nanostructures have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are nanostructures prepared using the methods. And, nanostructure films and molded articles comprising the nanostructures are also provided.

Abstract: A translatable electrode for use in a cartridge assembly for a contact start plasma arc torch including an electrode body having a longitudinal axis and including a proximal end and a distal end. The proximal end including a spiral groove and a contact surface at a proximal end face shaped to electrically communicate with a cathodic element. The translatable electrode also including at least one emissive insert disposed within the distal end of the electrode body and proximate a distal end face. The translatable electrode including at least one baffle disposed between the proximal and distal end of the electrode body. The translatable electrode also including a gas flow dampening region disposed circumferentially about the distal end and adjacent the distal end face and positioned between the at least one baffle and the distal end face.

Abstract: Embodiments of the present disclosure are directed to delivery systems, devices and/or methods of use to deliver and/or controllably deploy an implant in the form of a prosthesis, such as but not limited to a replacement heart valve, to a desired location within the body. In some embodiments, a replacement heart valve and methods for delivering a replacement heart valve to a native heart valve, such as a mitral valve, are provided. Features of delivery systems are disclosed, as well as echogenic markers for delivery systems.

Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides methods of preparing nanostructures with fluoride passivation. The disclosure also provides methods of preparing nanostructures with fluoride and amine passivation. The nanostructures have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are nanostructures prepared using the methods. And, nanostructure films and molded articles comprising the nanostructures are also provided.

Abstract: A method of determining a lawn treatment plan and delivering lawn treatments includes receiving at a user interface an address having a lawn. The method further includes determining an initial lawn size for the lawn based on the address. The method further includes receiving confirmation of the initial lawn size. The method further includes calculating a lawn treatment plan based on the initial lawn size. The method further includes providing the lawn treatment plan to a customer. The method further includes providing instruction for providing the lawn treatment plan to a fulfillment center. The method further includes delivering packetized lawn treatments according to the lawn treatment plan on a periodic basis to the customer for treatment of the lawn.

Abstract: This disclosure describes techniques for distributed storage of files that represent video content across different storage tiers to reduce the amount of computing resources used to store the files, while maintaining a low latency when responding to user requests to stream the video content. Video streaming services support the streaming of video content at different resolutions to support various user devices and/or user preferences. To provide streaming of a particular video content item at different resolutions, the video streaming services may store multiple files that represent the video content item for the different resolutions and stream at different bitrates to user devices. The techniques described herein include storing files configured to stream a video content item at different bitrates (and for different display resolutions) in a tiered storage structure to reduce the amount of computing resources taken to store the files.

Abstract: Devices, systems and methods are described herein to provide improved steerability for delivering a prosthesis to a body location, for example, for delivering a replacement mitral valve to a native mitral valve location. Disclosed are a number of features that can improve steerability or release of the prosthesis into the body location.