Abstract: A delivery device for delivering an instrument into a catheter assembly may include a syringe, which may include a barrel and a plunger movable within the barrel. The plunger may include a handle and a stopper coupled to a distal end of the handle. The stopper may include a channel. The delivery device may include a guidewire disposed within the barrel and extending through the channel. In response to depression of the plunger, the guidewire may move through the channel and a first end of the guidewire may be advanced in the distal direction. A second end of the guidewire may be fixed.

Abstract: Provided herein is a medical device, including an instrument having a proximal end and a distal end, an introducer configured to moveably receive the instrument and having an outer housing having a proximal end, a distal end, and a sidewall therebetween defining an inner volume and an inner housing having a proximal end, a distal end, and a sidewall therebetween defining an inner volume, the inner housing slidably received within the outer housing, the distal end of the introducer configured to couple the introducer to an intravenous line. The inner housing is configured to move relative to the outer housing to move the instrument between a first position and a second position.

Abstract: A medical device including an instrument, and an introducer configured to moveably receive the instrument and having an outer housing defining a curved passageway and an inner housing slidably received within the outer housing. The introducer couples to an intravenous line. The inner housing is movable relative to the outer housing and moves the instrument between a first position, in which the instrument is disposed within the outer housing, and a second position, in which the distal end of the instrument is disposed beyond the distal end of the outer housing and a portion of the instrument is disposed within the intravenous line. The curvature of the passageway of the outer housing may follow an arc of a circle or be coiled. The inner housing may be straight, curved, or coiled. Also, a system including a catheter assembly comprising a catheter adapter and a catheter, and the medical device.

Abstract: Provided herein is an instrument delivery device for advancing an instrument into a vascular access device. The instrument delivery device includes an outer housing, a connector coupled to the outer housing and including a projection member that mates with the vascular access device, and an inner housing having a distal end positioned within the outer housing and engaged with a proximal end of the instrument. The inner housing moves relative to the outer housing so that a distal movement thereof moves the instrument from a first position to a second position, with a distal end of the instrument moving from within the outer housing to out beyond the distal end of the outer housing and the projection member. A fluid flow preventing seal provided in or adjacent the connector prevents a transfer of fluid between the vascular access device and the inner volume of the outer housing.

Abstract: Provided herein is a medical device, including an instrument having a proximal end and a distal end, an introducer configured to moveably receive the instrument and having an outer housing having a proximal end, a distal end, and a sidewall therebetween defining an inner volume and an inner housing having a proximal end, a distal end, and a sidewall therebetween defining an inner volume, the inner housing slidably received within the outer housing, the distal end of the introducer configured to couple the introducer to an intravenous line. The inner housing is configured to move relative to the outer housing to move the instrument between a first position and a second position.

Abstract: Provided herein is an instrument delivery device for advancing an instrument into a vascular access device. The instrument delivery device includes an outer housing, an introducer portion positioned at the distal end of the outer housing and configured to mate with the vascular access device, and an inner housing having a distal end positioned within an inner volume of the outer housing and engaged with a proximal end of the instrument, with the inner housing moveable relative to the outer housing. A wheel member is positioned on the outer housing and rotatable relative thereto and is operably coupled to the inner housing to move the inner housing distally within the outer housing when the wheel member is rotated in a first direction, thereby also moving the instrument distally from to a position where the distal end of the instrument is disposed beyond the distal end of the outer housing.

Abstract: A nozzle tip assembly and method characterized by the use of a retention device including at least one tab that cooperates with a ledge for coupling a nozzle shroud to a nozzle adaptor. The retention device can be used as a secondary retention feature to prevent nozzle separation and/or to enable the fuel injector to be repaired without having to replace the entire assembly. The latter advantage is of particular benefit when there is damage during assembly or when the nozzle tip assembly is being overhauled.

Abstract: A nozzle tip assembly and method characterized by the use of a retention device including at least one tab that cooperates with a ledge for coupling a nozzle shroud to a nozzle adaptor. The retention device can be used as a secondary retention feature to prevent nozzle separation and/or to enable the fuel injector to be repaired without having to replace the entire assembly. The latter advantage is of particular benefit when there is damage during assembly or when the nozzle tip assembly is being overhauled.

Abstract: A fuel injector for gas turbine engines includes an inlet fitting, a housing stem, and a spray nozzle. A pair of fuel passages in the stem deliver fuel in a primary (continuous) flow and a secondary (non-continuous or reduced) flow to primary and secondary discharge orifices in the nozzle. The fuel passages are defined by inner and outer concentric conduits, with the primary flow directed through the inner conduit, and the secondary flow directed through the outer conduit. Fins are provided unitary with the inner conduit along the length of the housing stem, and are fixed at their radial outer ends to the outer conduit. The fins provide structural support and thermally connect the inner and outer conduits. During low power operation, the fins transfer heat energy between the outer conduit to the inner conduit to cool the outer conduit and thermally protect the fuel in the secondary fuel passage.

Abstract: A fuel injector for gas turbine engines includes an inlet fitting, a housing stem, and a spray nozzle. A pair of fuel passages in the stem deliver fuel in a primary (continuous) flow and a secondary (non-continuous or reduced) flow to primary and secondary discharge orifices in the nozzle. The fuel passages are defined by inner and outer concentric conduits, with the primary flow directed through the inner conduit, and the secondary flow directed through the outer conduit. Fins are provided unitary with the inner conduit along the length of the housing stem, and are fixed at their radial outer ends to the outer conduit. The fins provide structural support and thermally connect the inner and outer conduits. During low power operation, the fins transfer heat energy between the outer conduit to the inner conduit to cool the outer conduit and thermally protect the fuel in the secondary fuel passage.

Abstract: A check valve includes an outer valve body and an inner poppet valve moveable relative to the valve body and spring-biased into a closed position. The inner poppet valve has first and second stage openings. The first stage preferably has a single, relatively small through-hole into the chamber of the poppet valve, while the second stage preferably has multiple openings of a larger diameter. The first and second stage openings are spaced axially along the poppet valve, with the first stage opening being located closer to the valve head of the poppet valve than the second stage openings. In the closed position, fluid flow is blocked through both the first and second stage openings. When the cracking force of the valve is exceeded and the valve head moves away from the valve seat, fill flow occurs through the first stage opening and is restricted through the second stage openings.

Abstract: An atomizing nozzle suitable for use with high-viscosity slurries wherein a body (10) and forming element (40) include passageways (18, 22 and 48) that lead to a conical chamber (65) having a discharge annulus (66). The slurry exits discharge annulus (66) in a cylindrical continuous film. The inside of the film is exposed to swirled, compressed gas from an internal bore (50) of forming element (40) and the outside of the film is exposed to swirled compressed gas in a swirl chamber (72) to atomize and mix the slurry.

Abstract: A fuel nozzle wherein a swirl cone (36) is located between a housing (10) and a body (12). Body (12) cooperates with housing (10) to form an air chamber (32) and with cone (36) to form an inner annulus (40). Swirl vanes (34) are angularly mounted between cone (36) and body (12) such that air flowing from chamber (32) into annulus (40) forms a swirling flow pattern. Body (12) is provided with a fuel chamber (16) and radial passages (20) introduce fuel to the swirling air in inner annulus (40) to produce an atomized spray pattern.

Abstract: A gas turbine fuel injection nozzle is disclosed in which the secondary fuel is spread into a very thin film entirely within a region of low air momentum. The fuel is therefore not affected by turbulence, and this results in an evenly circumferentially distributed fuel film at the discharge orifice of the nozzle resulting in an even and extremely fine spray of fuel to enhance proper engine performance.