Abstract: Methods and systems for attaching a radiopaque marker to a prosthetic heart valve to indicate a location of a commissure of the prosthetic heart valve are disclosed. As one embodiment, a prosthetic heart valve can include a frame including a plurality of struts forming a plurality of cells of the frame arranged between an inflow end and an outflow end of the frame, a plurality of leaflets arranged within the frame, at least one commissure comprising an attachment member arranged across a selected cell of the plurality of cells of the frame and attached to struts of the frame forming the selected cell, and commissure tabs of two adjacent leaflets coupled to the attachment member, and a radiopaque marker arranged on the attachment member of the commissure. The marker is configured to indicate a location of the commissure of the prosthetic heart valve.

Abstract: A fluid management cassette includes a cassette body configured for insertion into a cassette bay of a control console, the cassette body including a face plate having at least one fluid input port and at least first and second fluid output ports defined therethrough. A pump is disposed within the cassette body as is a valve manifold, first and second pinch valves, or at least one pressure sensitive valve. First and second fluid flow paths extending through the cassette body have shared connections to the pump and separate connections to the respective first and second fluid output ports. The valve manifold, first and second pinch valves, or at least one pressure sensitive valve is selectively actuatable to at least four different configurations to permit fluid flow along either, neither, or both of the first and second fluid flow paths.

Abstract: The disclosure provides a method and system for extracting carbon dioxide from an exhaust gas. The method includes lowering a temperature of an exhaust gas using a heat exchanger, lowering a concentration of a particulate matter within the lowered temperature exhaust gas, and passing the lowered particulate concentration and lowered temperature exhaust gas through one or more membrane modules to produce a membrane module permeate flow that contains a higher concentration of carbon dioxide compared to a concentration of carbon dioxide in the lowered particulate concentration and lowered temperature exhaust gas. Further, the system includes a heat exchanger fluidly coupled to a particulate filter that is configured to lower a concentration of the particulate matter within the exhaust gas, and one or more membrane modules fluidly coupled to the particulate filter and configured to produce the membrane module permeate flow.

Abstract: Methods and compositions for enhancing wellbores and propped fractures for use in geothermal operations are provided. In some embodiments, the methods comprise: drilling with a drilling composition at least a portion of a first wellbore, wherein the drilling composition comprises a base fluid, a resin, and a thermally conductive filler; introducing a fracturing fluid into the first wellbore at a first pressure sufficient to create at least a first set of fractures extending from and in fluid communication with the first wellbore; and introducing a first plurality of proppant particulates into at least the first set of fractures, wherein a second wellbore penetrates at least a second portion of the subterranean formation, and wherein a second set of fractures extends from and is in fluid communication with the second wellbore into the subterranean formation, and the first set of fractures is in fluid communication with the second set of fractures.

Abstract: A delivery apparatus for implanting a radially compressible and expandable prosthetic heart valve in a native heart valve of the heart includes a handle portion and an elongated shaft extending from and movable relative to the handle portion. The shaft includes a proximal end portion coupled to the handle portion and a distal end portion configured to mount a prosthetic heart valve in a radially compressed state. The handle portion includes a control member movable longitudinally with respect to the handle portion, the control member engaging a gear assembly operable to convert longitudinal motion of the control member to rotational motion of the gear assembly. The gear assembly engages the elongated shaft such that rotational motion of the gear assembly causes corresponding longitudinal motion of the elongated shaft relative to the handle portion.

Abstract: Intraoral appliances are disclosed that provide electrical stimulation to tissue in a patient's oral cavity in a manner that reduces apnea events during sleep. A representative appliance can induce a current or currents through tissue and/or anatomical structures in a manner that maintains upper airway tone and/or patency.

Abstract: A sensing system for measurement of a multilayered blown polymeric film. A feedblock supplies polymeric material streams to an annular blown film die to form a plurality of layers of different polymeric materials. A sensing system is positioned adjacent to a film bubble extruded from the blown film die, wherein the blown film bubble includes annular layers of at least two different polymeric materials. The sensing system emits a signal toward selected circumferential positions around the film bubble and receives a plurality of reflected signals at each circumferential position. Each reflected signal in the plurality of reflected signals is generated at an interface between annular layers that includes a refractive index change detectable by the sensing system. A processor processes the reflected signals from the sensing system, and for each circumferential position determines a layer thickness profile for each polymeric material in the film.

Abstract: Methods and systems for performing injection treatments in subterranean formations stimulated by the ignition of propellants are provided. In some embodiments, the methods comprise: igniting a propellant in one or more secondary boreholes in a subterranean formation to at least partially rupture at least a region of the subterranean formation near the secondary boreholes; introducing a fracturing fluid into a first production well bore in the subterranean formation in or near the ruptured region of the subterranean formation at or above a pressure sufficient to create or enhance at least a primary fracture in the subterranean formation that extends into at least a portion of the ruptured region of the subterranean formation; and introducing a displacement fluid into one or more of the secondary boreholes or an injection well bore in the subterranean formation that comprises one or more fractures penetrating the ruptured region of the subterranean formation.

Abstract: A solids-control fluid for controlling flow of solids in a subterranean formation is disclosed herein. The solids-control fluid can include a diluent and a curable resin. The diluent can include a mutual solvent and an ethylene glycol. The curable resin can be dispersed within the diluent for controlling flow of solids in the subterranean formation.

Abstract: Described herein is a shock wave device for the treatment of vascular occlusions. The shock wave device includes an outer covering and an inner member inner connected at a distal end of the device. First and second conductive wires extend along the length of the device within the volume between the outer covering and the inner member. A conductive emitter band circumscribes the ends of the first and second wires to form a first spark gap between the end of the first wire and the emitter band and a second spark gap between the end of the second wire and the emitter band. When the volume is filled with conductive fluid and a high voltage pulse is applied across the first and second wires, first and second shock waves can be initiated from the first and second spark gaps.

Abstract: A method may include: introducing a treatment fluid into a subterranean formation, the treatment fluid comprising: an aqueous brine; and a hydrolysable resin precursor; allowing the hydrolysable resin precursor to hydrolyze in the subterranean formation to form at least a polymerizable resin precursor monomer; and allowing the polymerizable resin precursor monomer to polymerize to form a polymerized resin in the subterranean formation.

Abstract: A fluid management system includes a control console and a cassette. The control console includes a housing, a cassette bay defined within the housing, and an actuation mechanism disposed within the housing and including a plurality of actuators. The cassette is insertable into the cassette bay of the control console and includes a chassis supporting a plurality of fluid flow paths through the cassette, and an outer housing defining at least one access opening providing access to the plurality of fluid flow paths. With the cassette positioned within the cassette bay, each actuator of the plurality of actuators is aligned with an access opening of the at least one access opening to enable each actuator, upon actuation thereof, to close a corresponding fluid flow path of the plurality of fluid flow paths.

Abstract: The invention provides a system for treating an occlusion within a body lumen. The system may comprise an insulated outer sheath; an elongated conductive tube, wherein the insulated outer sheath is circumferentially mounted around the elongated conductive tube; and an insulated wire having a helically coiled portion at a distal end of the insulated wire. The coiled portion includes an exposed distal tip, and a distal portion of the elongated conductive tube is circumferentially mounted around the distal coiled portion of the insulated wire. When a voltage is applied across the insulated wire and the elongated conductive tube, a current is configured to flow from the exposed distal tip of the insulated wire to the elongated conductive tube to generate a plurality of cavitation bubbles. In an alternate embodiment, an elongated central electrode is used in place of the conductive tube.

Abstract: A fluid management cassette configured for use with a control console includes a housing configured for insertion into a cassette bay of a control console lead by an insertion end of the housing, a peristaltic pump mounted on a front end of the housing opposite the insertion end thereof, and a drive shaft extending through the housing and rotatable relative thereto. The drive shaft is operably coupled to the peristaltic pump at a front end of the drive shaft and includes an insertion end configured to operably engage a drive rotor of the control console upon insertion of the housing into the cassette bay of the control console.

Abstract: Aspects of an expandable sheath can be used in conjunction with a catheter assembly to introduce a prosthetic device, such as a heart valve, into a patient. Such aspects can minimize trauma to the vessel by allowing for temporary expansion of a portion of the introducer sheath to accommodate the delivery apparatus, followed by a return to the original diameter once the prosthetic device passes through. Some aspects can include various configurations of the sheath that comprise an elongated tube having a disclosed composition that can form an outer jacket or a strain relief jacket or can be used as the outer layer of the sheath. Aspects of the present expandable sheath can avoid the need for multiple insertions for the dilation of the vessel and reduce the push force needed for passage of the medical device, thus offering advantages over prior art introducer sheaths.

Abstract: A method and system pulse for treating a plurality of wells simultaneously includes applying a high pressure of fracturing fluid to one or more switching valves and repeatedly opening and closing the one or more switching valves to divert the fracturing fluid near instantaneously from one well to the other well to creating a pulse wave into the plurality of wells for fracturing subterranean formations. The one or more switching valves may be a single 3-way valve incorporating the function of two or more switching valves. This technique reduces wear of surface equipment including high pressure pumps that need only provide a constant pressure.

Abstract: The present disclosure provides a catheter for treating lesions in a body lumen, such as calcified lesions and occlusions in vasculature. The catheter can include a dual-layer electrode assembly having a first conductive sheath and a second conductive sheath arranged circumferentially therearound. In some implementations, a first conductive sheath can be a flat coil. When a voltage is applied across the conductive sheaths, current flows across an arcing region, for example, from the distal side edge of the first sheath to the distal side edge of the second sheath to produce shock waves and/or cavitation bubbles. As a treatment continues, the sheaths slowly erode at the arcing region where current flows between the sheaths. To increase the lifespan of the electrode assembly, the distal side edges of the sheaths may be shaped to promote erosion of the sheaths in a predetermined or semi-controlled pattern.

Abstract: A method including collecting exhaust gas comprising carbon dioxide (CO2) at a wellsite to provide a collected exhaust gas, separating CO2 from the collected exhaust gas to provide a separated CO2, and forming an alcohol product utilizing at least a portion of the separated CO2. The alcohol product can include methanol, ethanol, a precursor thereof, or a combination thereof.

Abstract: The present disclosure may relate to a method of remediating a wellbore. The method may comprise pumping a resin treatment fluid from a surface location to an annular space bounded by an outer diameter of a production tubular, wherein the resin treatment fluid comprises a liquid hardenable resin, a hardening agent, and a particulate bridging agent. The resin treatment fluid may gravity settle in the annular space to contact production equipment in the annular space such that at least a portion of the particulate bridging agent bridges across one or more damaged sections of the production equipment, wherein at least a portion of the liquid hardenable resin sets to form a hardened mass to seal the one or more damaged sections.

Abstract: A method includes collecting exhaust gas comprising carbon dioxide (CO2) at a wellsite to provide a collected exhaust gas, separating CO2 from the collected exhaust gas to provide a separated CO2, and forming urea utilizing at least a portion of the separated CO2. A system for carrying out the method is also provided.