1128results about "Guide needles" patented technology

Rapidly insertable central catheters (“RICCs”), introducers, and insertion devices including combinations and methods thereof are disclosed. For example, a RICC system can include an introducer and a RICC insertion assembly including a RICC assembly disposed in a RICC insertion device. The RICC assembly can include a RICC, an access guidewire, and a splittable casing over a catheter tube of the RICC and the access guidewire forming a longitudinal composite. The RICC insertion device can include a frame and a nose cover forming a split channel that splits away from a through channel of a nose of the frame. The RICC insertion device can be configured for advancing the RICC assembly by rolling the longitudinal composite across roller wheels disposed in the frame. The through channel can be configured for advancing the catheter tube therethrough while the split channel can be configured for both splitting and passing the splittable casing therethrough.

Rapidly insertable central catheters (“RICC”) and methods thereof are disclosed. In an example, a RICC includes a catheter tube, a suture wing disposed over a medial portion of the catheter tube, a hub coupled to a proximal-end portion of the catheter tube, and a number of extension legs extending from the hub. The catheter tube can include a first section in a distal portion of the catheter tube formed of a first polymeric material having a first durometer. The catheter tube can also include a second section proximal of the first section of the catheter tube formed of a second polymeric material having a second durometer less than the first durometer. The catheter tube can have a column strength sufficient to prevent buckling of the catheter tube when inserted into an insertion site and advanced through a vasculature of a patient without use of the Seldinger technique.

A vascular access instrument advancement device may include a housing and an extension tube extending through the housing. The extension tube may extend through the housing. The extension tube may include a first lumen and a second lumen. A blood collection pathway may extend through the first lumen. A wedge may be disposed within the housing and the second lumen of the extension tube. A pair of opposing pinch members may be configured to pinch the extension tube. The pair of opposing pinch members may be disposed within the housing proximal to the wedge and configured to move along the extension tube with the housing. An instrument may extend distally from the wedge. The instrument may be disposed within the second lumen. In response to moving the housing distally along the extension tube, the pair of opposing pinch members push the wedge distally and the instrument is advanced distally.

The invention relates to the technical field of medical instruments, and discloses a flexible ureteroscope sheath device and a pressure control method thereof.The flexible ureteroscope sheath device is characterized in that one end of a connector tube seat is connected with a sheath tube, the other end of the connector tube seat is provided with three connectors, the first connector is connected with a pressure relief device and a control device, the second connector is used for a flexible ureteroscope and perfusion, and the third connector is used for negative pressure suction; a central channel is arranged in the sheathing canal, and passage type pressure measuring sensors are axially and uniformly arranged around the channel; the control device comprises an adjusting key, a digital display, an indicating lamp and a buzzer, and is electrically connected with the pressure measuring sensor and the pressure relief device; the control device comprises an automatic pressure relief module which is used for collecting analog voltage signals and converting the analog voltage signals into pressure data values, and when a detection value reaches a set threshold value, the electric control pressure relief device automatically relieves pressure. According to the invention, real-time and continuous detection and control of the pressure in the cavity are realized.

Provided are methods and devices for facilitating the advancement of a catheter device, such as an intracardiac ultrasound examination catheter, through a body wall, such as the septum of the heart. The catheter device is advanced through a subject's vasculature to a first body cavity. The catheter device is coupled to a guidewire previously placed within the vasculature between the first and second cavities. The catheter device is then advanced from the first body cavity to the second body cavity through a body wall separating the first and second cavities. To facilitate this advancement, the catheter device can be magnetically coupled to the guidewire. The magnetic assembly can be provided on a distal portion of a sleeve through which the distal portion of the catheter is advanced. A malleable dilator element can also be provided on the distal portion of the sleeve.

A clot retrieval device comprising an elongate shaft having a proximal end and a distal end and a clot retrieval element at the distal end of the elongate shaft. A proximal end of the elongate shaft configured to retract a first catheter over the elongate shaft. The shaft extension member comprising one or more raised profiles configured to interfere with one or more indentations along the elongate shaft such that the shaft extension member is configured to extend between a first length and an intermediate length. A second catheter is advanced to or adjacent to the distal end of the clot retrieval device shaft to enable enhanced aspiration adjacent to the clot retrieval element.

Disclosed herein are drug delivery devices including catheter assemblies, infusion systems, pre-filled syringes, methods of use, combination products, kits of parts, and drug products with parts lists for independent sourcing, for use in the otic administration of a drug product to a subject in need thereof.

A catheter system and method of introducing an intravenous catheter into a patient includes a syringe, an access needle, a pliable catheter, and a guidewire. The syringe has a first chamber and a distal syringe end portion, which defines a conduit distally extending to a distal syringe opening such that the conduit fluidly connects the first chamber to the distal syringe opening. The access needle defines a needle lumen longitudinally extending therethrough and is secured relative to the distal syringe end portion. The pliable catheter is releasably secured relative to the access needle. The guidewire distally extends through the conduit toward the distal syringe opening and is configured to selectively move through the conduit, the distal syringe opening, and along the needle lumen to thereby guide movement of the pliable catheter relative to the access needle for introducing the pliable catheter into the patient.

An intravenous catheter assembly comprising: a catheter tube; a catheter hub having a distal end and a proximal end, wherein the distal end is joined to the catheter tube and the proximal end defines a housing having inner space; a needle extending through the catheter hub and the catheter tube and defining an axial direction, wherein the needle has opposite proximal and distal ends, the distal end forming a needle tip; a needle hub attached to the proximal end of the needle; a needle guard slidably arranged on the needle, wherein the needle guard is movably retained in the housing of the catheter hub; a valve provided in the inner space in the catheter hub to prevent foreign contamination from entering the catheter hub; and a disc that is arranged proximal or distal to the valve or that is joint or linked to the valve.

The invention relates to an indwelling cannula (1) for puncturing a hollow body by means of a puncture needle, wherein the indwelling cannula (1) has a catheter (2) with a vasiform catheter tube (22), in which the puncture needle can be guided longitudinally displaceably. The indwelling cannula (1) has a manually actuable forward feed mechanism (5) by which a relative movement can be generated between the catheter tube (22) and the puncture needle as a result of manual actuation, by which a puncture tip (31), protruding from the catheter tube (22) at the near-patient end, of the puncture needle can be received in the catheter tube (22). Preferably, at least one operating element of the forward feed mechanism (5) is configured as a pivotably mounted lever (53) with at least one lever arm.

A catheter assembly includes: an inner needle configured to puncture a living body; a catheter configured to allow the inner needle to be inserted therethrough; a catheter hub located at a proximal end of the catheter; a valve body located in an internal space of the catheter hub; an opening member located on a proximal side of the valve body, the opening member comprising: a cylindrical barrel portion, a neck portion extending from a distal end of the barrel portion, wherein a diameter of the neck portion is smaller than a diameter of the cylindrical barrel portion, and a foot portion extending to a proximal side of the barrel portion, wherein the opening member is configured to move in a distal direction to open the valve body; and a movement inhibiting mechanism that resists movement of the opening member in the distal direction via a contact portion.

The present invention concerns a sheath splitting apparatus for use with a medical device delivery system for deploying a sheathed medical device. The sheath splitting apparatus comprising: a body 3 having a medical device pathway 11 for receiving a medical device, and one or more arm members having one or more guide elements 12 defining a sheath pathway for guiding sheath material removed from the sheathed medical device. At least a section of the one or more arm members is movable towards and away from the longitudinal axis of the medical device pathway.

An integrated midline catheter system including a catheter adapter having a catheter extending therefrom, a stabilization platform, a proximal connector portion fluidly coupled to the catheter, and a side branch fluidly coupled to the catheter. The system also includes a near patient access port coupled to the side branch of the catheter adapter, wherein the near patient access port includes a connector portion couplable to a peripheral probe device. Furthermore, the system includes a catheter insertion device, wherein the catheter insertion device is configured to enable distal movement of the catheter adapter and catheter so as to position the catheter within a patient's vasculature.

A device for one-handed insertion of a guidewire includes a mounting / gripping member and an actuator carriage. A syringe mounted on the mounting / gripping member has a barrel and a plunger containing a valve assembly. A guidewire is installed through a passage in the plunger. The valve assembly engages the guidewire with at least one elastic seal in an interference fit. The carriage has a guidewire feed and a trigger. The trigger can slide the carriage axially along the mounting / gripping member, which moves the plunger forwardly and backwardly. While a user holds the mounting / gripping member, the trigger can be moved with a digit and another digit of the same hand engages the guidewire between the digit and the guidewire feed and advances it through the syringe, sensing the degree of resistance encountered by a portion of the guidewire.

Medical devices and related methods useful for needle access during medical procedures are described. The medical device may include a needle and a handle coupled to the needle, wherein the handle includes a body comprising a radiolucent material, a first marker proximate a proximal end of the body and a second marker proximate a distal end of the body. Each of the first marker and the second marker may include a radiopaque material, and the first marker may have a shape complementary to the second marker to align a position of the needle relative to a subject when visualized by X-ray imaging.

A retrograde delivery catheter includes at its distal end an expandable member configured to at least partially occlude the coronary sinus of a patient's heart, and has a length and variable stiffness that allows the distal end to be selectively articulated so as to be positioned in the coronary sinus. The delivery catheter has a triple lumen construction with a primary lumen extending between the proximal and distal ends and configured to allow a cardioplegic fluid to be delivered to the coronary sinus. A second lumen provides for balloon inflation while a third lumen allows monitoring of a pressure within the coronary sinus. A torque may be applied and a reinforcement member within the delivery catheter provides improved torque transmission along the length of the catheter.

A valve actuator that moves in a catheter assembly between a first position where a valve is closed and a second position where the valve is open, the valve actuator including a shaft portion at a distal end of the valve actuator that is configured to pierce the valve, a mating portion at a proximal end of the valve actuator that is configured to engage a Luer device, a diameter reduction region that connects the shaft portion and the mating portion, and a plurality of windows that extend through the valve actuator for flushing fluid, the plurality of windows being disposed in the diameter reduction region, wherein each of the plurality of windows does not extend a full length of the diameter reduction region.

The embodiment of the utility model provides a needle head protection device and a safety type puncture needle, the needle head protection device comprises a shell and a protection component, the protection component is connected to the shell, the protection component comprises a needle core matching piece and two elastic protection pieces, the needle core matching piece is provided with a needle threading groove, and the two elastic protection pieces are arranged in the needle threading groove. The two elastic protection pieces are connected to the two sides of the needle core matching piece respectively, a protection piece part is arranged at the end, away from the needle core matching part, of each elastic protection piece, and an extension line of the needle penetrating groove passes through the protection piece parts. The needle head protection device can be arranged on the needle body of the puncture needle in a sleeving mode, after the puncture needle is used, the needle head protection device can be moved to one side of the needle head of the needle body, the needle head protection device can be limited to the needle head and cover the needle head, and therefore the situation that the puncture needle pricks medical staff is avoided, and safety is improved.

An introducer assembly includes a valve having a first end and an opposite second end; a sheath fixedly secured to and extending axially from one of the first and second ends of the valve; a dilator extending through the valve and sheath; and a lock knob rotatable between locked and unlocked positions to releasably axially lock the tool relative to the sheath without causing corresponding rotation of the tool therewith.

Ablation, crossing, and cutting systems, devices and associated methods can relate to a crossing device that includes, in combination a spring-enhanced handle and body configured to controllably extend and retract an interventional tool within a microcatheter for addressing an occlusion within a vessel of a patient to provide improved access for supplemental treatment and reperfusion.

A device for inserting a catheter according to a disclosed embodiment comprises: a needle including a needle body extending in a first direction, a tip forming a distal end in the first direction, and a pair of edge portions which meet each other at an acute angle at the tip, have widths increasing in both directions perpendicular to the first direction toward a second direction opposite to the first direction, and form sharp edges so that the skin of a patient can be incised in the both directions; and a sheath having a guide hole extending in the first direction therein so that a catheter can be inserted, wherein the needle body is disposed through the guide hole so that the tip and the edge portions of the needle are positioned in the first direction of the guide hole, and the outer diameter of the distal end in the first direction is greater than the maximum width of the pair of edge portions in both directions.

A medical device that functions as a stylet is described. The medical device can include an insulating layer (or jacket) that encapsulates both a multicore optical fiber and a conductive medium. The optical fiber can include a cladding and a plurality of core fibers spatially arranged within the cladding. Each of the core fibers can include a plurality of sensors distributed along a longitudinal length of the corresponding core fiber, and each of the sensors can be configured to: (i) reflect light signals having different spectral widths based on received incident light, and (ii) alter a characteristic of the reflected light signals for determining a physical state of the multicore optical fiber. The conductive medium can provide a path for electrical signals detected at a distal portion of the conductive medium. The conductive medium can be concentric with the cladding, but can be separate from and adjusted to the cladding.

Medical delivery system for accessing a tricuspid valve via an inferior vena cava, including an outer guide catheter, an inner guide catheter and an interventional catheter. The first deflection portion of the outer guide catheter is steerable to define a first outer-guide-catheter curve and the second deflection portion of the outer guide catheter is steerable to define a second outer-guide-catheter curve and the first deflection portion of the inner guide catheter is steerable to define a first inner-guide-catheter curve.

A medical device for use in catheter application has a longitudinal axis and a capillary portion that is elongate coaxially to the longitudinal axis between a proximal capillary end and a distal capillary end. The capillary portion has a flexurally resilient design and a capillary outside diameter. A dilator portion, which is elongate coaxially to the longitudinal axis between a proximal dilator end and a distal dilator end axially adjoining the proximal capillary end, has a dimensionally stable design and a dilator outside diameter that is larger than the capillary outside diameter at least in sections. A lumen, which is elongate coaxially to the longitudinal axis continuously between the proximal dilator end and the distal capillary end through the dilator portion and the capillary portion, is configured for receiving a cannula.

Elongate blood flash flow paths can be detrimental to the operation of catheter placement systems by delaying the indication time, reducing the efficacy of the vacuum, or increasing the chance of clotting. Embodiments disclosed herein are directed to catheter placement systems with reduced blood flash fluid paths, including blood flash indicators having a proximally slidable syringe barrel and plunger that is fixedly attached to the system housing. By reversing the operation of the blood flash indicator syringe, the clinician maintains the advantages of a visual and tactile feedback while shortening the blood flow path between the needle tip and syringe barrel. Also disclosed is a needle interface structure configured to further shorten the blood flash fluid path.

Sheath assembly for the insertion of a cord-shaped element, comprising an introducer sheath, and an auxiliary sheath for insertion into the introducer sheath together with the cord-shaped element. In some examples, the auxiliary sheath has a housing configured to detachably couple to the introducer sheath housing, and to detachably fasten the cord-shaped element with respect to the auxiliary sheath housing.

An integrated peripheral intravenous (IV) catheter configured for blood draw both at the time of catheter placement and during catheter indwell. The peripheral IV catheter includes a catheter adapter having a catheter configured to be inserted into a patient's vasculature and a side inlet defining a fluid pathway into and out of the catheter. The peripheral IV catheter also includes a side port member having a main branch, the main branch including a distal end configured to couple the side port member to the side inlet of the catheter adapter and a connector portion accessible via a proximal end of the main branch. Additionally, the peripheral IV catheter includes a blood collection adapter removably and directly coupled to the connector portion of the side port member at the proximal end of the main branch. Furthermore, side pore member of the peripheral IV catheter may include a side branch.