100 results about "Flow diverter" patented technology

Neurovascular flow diverter and delivery systems, and methods of using the same are disclosed herein. The systems can include an introducer sheath, a catheter, a deployable flow diverter that can be contained in the introducer sheath or in the catheter, a core wire, and one or several deployment features coupled to the core wire and engaging the flow diverter. The deployment features can include one or more of a pusher, one or several friction bumps, one or several deployment coils, a claw mechanism, a self-expanding element, a supporting coil, a tip coil, and / or an atraumatic tip. One or more of the deployment features can be radiopaque.

Systems and methods for implanting a shunt for regulating blood pressure between a patient's left and right atria are provided. The shunt comprises an anchor having a neck region, first and second end regions, and a conduit affixed with the anchor formed of a biocompatible material that is resistant to transmural and translation tissue ingrowth and that reduces a risk of paradoxical embolism. The shunt may be advanced through the sheath until the first region protrudes from the sheath and self-expands within the left atrium. The shunt and the sheath may then be retracted until the first region contacts the left side of the atrial septum. The sheath may further be retracted until the counterforce exerted by shunt tension on the atrial septum overcomes the friction of the retained portions of the shunt such that the second region is exposed from the sheath and self-expands within the second atrium.

A device includes a pre-sample reservoir, an actuator mechanism, and a diverter. The pre-sample reservoir can be fluidically coupled to a delivery member to receive and isolate a predetermined volume of bodily-fluid withdrawn from a patient. The actuator mechanism is operably coupled to the pre-sample reservoir such that, when actuated, a negative pressure is formed in the pre-sample reservoir that urges the bodily-fluid to flow into the pre-sample reservoir. The diverter can selectively control fluid flow between the delivery member and the pre-sample reservoir. The diverter includes a flow control mechanism that defines a first fluid flow path and a second fluid flow path. The diverter is movable between a first configuration in which the bodily-fluid flows through the first fluid flow path to the pre-sample reservoir, and a second configuration in which the bodily-fluid flows through the second fluid flow path to a sample reservoir coupled to the diverter.

A device for regulating blood pressure between a patient's left atrium and right atrium comprises an hourglass-shaped stent comprising a neck region and first and second flared end regions, the neck region disposed between the first and second end regions and configured to engage the fossa ovalis of the patient's atrial septum, and a drug-eluting biodegradable material that biodegrades over time to release a drug that limits tissue overgrowth. The inventive device also may include a biodegradable material that biodegrades to offset flow changes caused by tissue overgrowth. The inventive device may reduce left atrial pressure and left ventricular end diastolic pressure, and may increase cardiac output, increase ejection fraction, relieve pulmonary congestion, and lower pulmonary artery pressure, among other benefits.

A method may involve creating a first opening in a right pulmonary artery and a second opening in a superior vena cava. A shunt may be percutaneously delivered into the first opening and the second opening. A stent may be percutaneously delivered into the superior vena cava adjacent to the shunt. The stent can comprise a covering to at least partially prevent flow of blood from the shunt through the stent and / or may be at least partially flexible to allow the stent to bend away from walls of the superior vena cava in response to inflow of blood through the shunt. The stent may be sized to seal against the superior vena cava at a first end and a second end of the stent to trap blood between the stent and the walls of the superior vena cava.

The invention provides a soil reducing inorganic sulfide continuous extraction device and a use method thereof. The extraction device comprises a brown reaction bottle, a first sealing bottle plug is arranged at a bottle opening of the brown reaction bottle, and a gas replacement needle, a sample injection needle and a liquid replacement needle are arranged on the first sealing bottle plug; the reagent deoxidizing bottle is connected with the sample injection needle through a first liquid flow divider and a first multi-channel injection pump; a second sealing bottle plug is arranged at a bottle opening of the reagent deoxidizing bottle, a first needle tube, a second needle tube and a third needle tube are respectively arranged on the second sealing bottle plug, a needle seat of the second needle tube is connected with a second two-way valve, the second two-way valve is connected with a first liquid diverter, the first liquid diverter is connected with a first multi-channel injection pump, and the second liquid diverter is connected with a second multi-channel injection pump. A channel of the first multi-channel injection pump is connected with an eighth two-way valve on the sample injection needle seat; and the absorption liquid deoxidizing bottle is connected with the liquid changing needle through a second liquid diverter and a second multi-channel injection pump. The detection efficiency and stability of the soil reducing inorganic sulfide are improved.

An apparatus for shunting blood includes a flow-indication chamber shaped to define an entry port and an exit port, and one or more moveable objects disposed within the flow-indication chamber and configured to move in response to a flowing of the blood from the entry port to the exit port. At least a portion of a wall of the flow-indication chamber is transparent so as to expose the moveable objects to sight. Other embodiments are also described.

The present invention relates to a bore access spool assembly comprising a housing (2) having a longitudinal axis, an upper end (3) of the housing being configured for connection to a riser, a lower end (4) of the housing being configured for connection to a subsea well assembly. The housing further comprises an upper bore (5) located at the upper end, and a plurality of lower bores (6, 6a) located at the lower end, a chamber (7) extending along the longitudinal axis linking the upper and lower bores. A diverter sleeve (11) is provided for introduction into the housing chamber (7) through the upper bore (5), the diverter sleeve (11) being open at its upper end to allow access into a sleeve interior from the upper bore (5), and having an angled kick surface (17) at a lower end of its interior, the diverter sleeve (11) and housing (2) having respective guide formations. The diverter sleeve (11) is configured to be received within the chamber (7) and guided into position through interaction of the guide formations to a deployed state to block a first one (6a) of the plurality of lower bores (6a, 6b), and to divert communication of the upper bore (5) instead to be with a second one (6b) of the plurality of bores.

A shunt for treating glaucoma that includes a silicone rubber duct for diverting aqueous humor from a chamber of a patient's eye and a fixation body frictionally located on the duct in an arrangement permitting sliding displacement of the fixation body, for fixing and sealing the duct within scleral tissue surrounding the eye. The duct has a rigid proximal portion having a proximal end and a deformable distal portion locatable in the scleral channel and having a distal end. The distal portion is severable, allowing a surgeon to cut the distal portion to a desired length corresponding to the anatomical dimensions of the patient's eye and a required bleb position. The proximal portion has a capillary lumen having a diameter which is smaller than the diameter of a lumen of the distal portion, thereby reducing a flow rate of aqueous humor along the capillary lumen.

The present technology is generally directed to interatrial shunting systems and associated devices and methods. For example, a system configured in accordance with embodiments of the present technology can include a shunting element implantable into a patient at or adjacent a septal wall. The shunting element can have a lumen that fluidly connects a left atrium and a right atrium of the patient to facilitate blood flow therebetween when the shunting element is implanted. In some embodiments, the system further includes a flow control element to selectively control blood flow between the left atrium and the right atrium.

A fluidic system includes a cartridge having a brine subsystem, a contrast agent subsystem, and a vacuum subsystem. The fluidic system further includes a diverter and a first set of conduits coupled to the cartridge and the diverter, the first set of conduits having a single saline channel, a single contrast agent channel, and a single vacuum channel. The fluidic system further includes two or more hub assemblies, at least one of the two or more hub assemblies configured to have a third saline flow path, a third contrast agent flow path, and a third vacuum flow path, the two or more hub assemblies are coupled to one another to provide saline, contrast agent, and vacuum to a lumen of a catheter coupled to at least one of the two or more hub assemblies. The fluid system further includes a second tubing set having a plurality of tubing sets, each tubing set coupled to the diverter and one of the two or more hub assemblies.

A cardiac microperfusion device is disclosed that includes an integrated flow restrictor and a diverter from the left atrium to modulate flow within the blood vessel, particularly flow within the coronary sinus. Related methods and systems are also disclosed.

The present technology relates to adjustable shunting systems and methods. In some embodiments, the present technology includes an adjustable shunting system that includes a drainage element having an inflow portion configured for placement within a patient. The system can also include a flow control assembly having a gating element operably coupled to the outflow portion of the drainage element. The flow control assembly can further include a first actuation element and a second actuation element coupled to the gating element. The first and second actuation elements can be configured to selectively move the gating element relative to the outflow portion to control an amount of fluid flow therethrough. The first and second actuation elements can each extend less than entirely around a perimeter of the drainage element.

Endovascular assemblies may include a catheter, a shunt, and a wire. The shunt includes a frame and a liner secured about the frame. The wire extends through the catheter and is coupled to the shunt. The shunt is configured to move between a collapsed configuration and a radially expanded configuration in response to movement of the wire. Endovascular assemblies may be used to shunt a vessel.

To provide a shunt system and a method with tissue growth prevention.SOLUTION: A shunt comprises a central flow portion configured to fit at least partially within an opening in a tissue wall. The tissue wall is situated between a first anatomical chamber and a second anatomical chamber and the opening represents a blood flow path between the first anatomical chamber and the second anatomical chamber. The central flow portion is further configured to maintain the blood flow path from the first anatomical chamber to the second anatomical chamber. The shunt further comprises a barrier configured to alter growth of tissue around the shunt.SELECTED DRAWING: Figure 4

The invention is directed to a medical device, in particular a flow diverter, having a radially self-expandable lattice structure which is tubular at least in some regions and which is composed of a plurality of interwoven individual wires which form meshes of the lattice structure, wherein at least some of the individual wires have an X-ray visible core material and a superelastic mantle material, wherein a plurality of directly adjacent meshes in the circumferential direction of the lattice structure form a mesh ring in a fully self-expanded state, the lattice structure has an expansion diameter Dexp, the mesh ring has a mesh number n, and the core material has a core diameter dcore, and wherein for the core diameter dcore, the following holds:dcore=f·(Dexp / n)wherein the following holds for a visibility factor f:0.08≤f≤0.15.

Neurovascular flow diverter and delivery systems, and methods of using the same are described herein. The systems can include a customizing member including an introducer sheath, a catheter, a deployable flow diverter that can be contained in the introducer sheath or in the catheter, a core wire, and one or several deployment features coupled to the core wire and engaging the flow diverter. The customizing member includes a tubing extending along and around a distal portion of the introducer sheath. This tubing is cuttable and contains a distal end of the flow diverter. The length of the flow diverter can be customized by cutting through the tubing and the therein contained flow diverter.

A diverter that expands into a hourglass shape is described. When the diverter is expanded, the two ends of the diverter expand radially outward relative to the middle portion of the diverter, and the length of the diverter is shortened such that the expanded ends engage tissue around the puncture or hole within the tissue of the patient.

Puncture and anchor devices are disclosed that facilitate puncturing through a wall of a second vessel from a first vessel. The anchor can be delivered in a catheter or other delivery device and then released after puncturing through the vessel walls. The anchor can remain in the tissue, acting as a shunt. The devices and methods disclosed herein relate to a puncture device that includes a sharpened coil; a needle configured to extend from the distal end of the catheter through a central axis of the sharpened coil, wherein the sharpened coil anchors the catheter to the targeted tissue to facilitate puncturing of the targeted tissue with the needle. The needle comprises a dilation device that is configured to open the tissue and to create a conduit between both vessels. The sharpened coil is detachable from the catheter.

Embodiments described herein relate to a shunt for treating an aortic aneurysm and a robotic insertion system for implanting the shunt. In some embodiments, the shunt may include a central portion, an arterial sealing structure, and a venous sealing. In some embodiments, the venous sealing structure may have a lateral length in its deployed configuration, and the arterial sealing structure having a lateral length in its deployed configuration that is greater than the lateral length of the venous sealing structure. The shunt may be advanced robotically in a delivery configuration through a venous puncture site of a vein to access an arterial puncture site of the artery, and then deployed, thereby enabling blood flow through the shunt from the artery to the vein.

Depicted and described is a flow diverter (1) for use in a pharmaceutical process comprising: a diverter element (2) for diverting at least in sections a flow direction of a fluid, and at least one insert (3), preferably at least two inserts (3), for inserting into at least one fluid conduit (4), wherein the at least one insert (3), preferably the at least two inserts (3), respectively comprises a first end (5) arranged adjacent to, preferably connected to, the diverter element (2) and a second end (6) distanced from the diverter element (2), wherein the at least one insert (3), preferably the at least two inserts (3), respectively comprises a fastening section (7) for fastening the flow diverter (1) to the at least one fluid conduit (4), and wherein the at least one insert (3), preferably the at least two inserts (3), respectively has on the inside a hollow section (8) for conveying a fluid. In order to simplify the reduction of foam formation when conveying liquids, preferably in a pharmaceutical process, into a storage element (36) of a fluid vessel (35) the described flow diverter (1) is proposed.

The invention relates to a water segregator device for controlling fluid diversion, and relates to the technical field of pipeline water supply equipment.The water segregator device is characterized in that water diversion valves are installed above a water segregator branch and a water collector branch respectively, each water diversion valve comprises a valve body and a valve rod, a ball core is installed in each valve body, and each ball core can rotate in the corresponding valve body; the water segregator device integrates a multi-channel flow dividing function, flexible switching of the flow direction of a medium is achieved through rotation of the ball body, and the fluid resistance is reduced by about 30% compared with a traditional water segregator; meanwhile, a first valve seat and a second valve seat are arranged in the valve body, the first valve seat is mounted at the top of the ball core, and the second valve seat is mounted at the bottom of the ball core. The first valve seat and the second valve seat are elastic supporting valve seats, the pressure self-sealing effect is adopted, namely, the pressure of flowing media can further push the second valve seat to press the ball core, the higher the pressure in the system is, the larger the sealing specific pressure is, the better the sealing effect is, and therefore the high sealing performance in the water segregator device is achieved.

The invention relates to a new arteriovenous access system which can be used in vessels (arteries, veins and a dialysis shunt). The invention relates to an arteriovenous access system for blood vessels, comprising: - a tube-shaped tubular body (1), - having a slot (2) in the longitudinal direction (3), with respect to the tube shape, which divides the tubular body (1) into a left portion (2a) and a right portion (2b) with an axis of reflection (2c) therebetween; - at least four cutouts (4) in the tubular body, of which at least two are arranged in the left portion and at least two are arranged in the right portion; and - a hollow connecting piece (5) on the tubular body for connection to a blood vessel, the hollow connecting piece being connected to the tubular body at an acute angle (α) not equal to 90°, wherein the angle (α) is measured in the longitudinal direction. The invention also relates to an associated kit having this access system.

A method including: introducing a shunt into a vascular system, wherein the shunt includes an inlet aperture in an inlet region and an outlet aperture in an outlet region; positioning the inlet region into an epidural or intervertebral vein; with a stylet, puncturing a wall of the epidural or intervertebral vein, traversing an interstitial space, and puncturing a thecal sac, wherein the stylet includes a wire extending through the shunt; moving the shunt to cause the inlet region to extend through a wall of the epidural or intervertebral vein; moving the shunt to cause the inlet region to extend into an interstitial space; and moving the shunt to cause the inlet region to extend through the thecal sac, such that the inlet region is positioned in an intradural space, and such that the outlet region is positioned in a venous pathway.

Neurovascular flow diverter and delivery systems, and methods of using the same are described herein. The systems can include an introducer sheath, a catheter, a deployable flow diverter that can be contained in the introducer sheath or in the catheter, a core wire, and one or several deployment features coupled to the core wire and engaging the flow diverter. The system includes a tubing extending along and around a distal portion of the introducer sheath. This tubing is cuttable and contains a distal end of the flow diverter. The length of the flow diverter can be customized by cutting through the tubing and the therein contained flow diverter.

An apparatus for shunting blood includes a flow-indication chamber shaped to define an entry port and an exit port, one or more moveable objects disposed within the flow-indication chamber and configured to move in response to a flowing of the blood from the entry port to the exit port, at least a portion of a wall of the flow-indication chamber being transparent so as to expose the moveable objects to sight, a pushable element passing through a wall of the flow-indication chamber and configured to cover a port selected from the group consisting of: the entry port and the exit port, upon being pushed into the flow-indication chamber, and a spring coupled to the pushable element and to an inner wall of the flow-indication chamber, and configured to inhibit the pushable element from covering the port in an absence of any pushing force applied to the pushable element.

The utility model discloses a rubber sealing assembly for multilayer shunt, including sealing rubber, the inside position department of sealing rubber is provided with the support ring, the upper end position department of sealing rubber is provided with the compression ring, the inside position department of compression ring is provided with the sliding slot, the inside position department of sliding slot is provided with the inner groove, movable mounting block is installed to the compression ring through the sliding slot at the position department of outside, the inside position department of movable mounting block is fixed with T type pole, the inside position department of T type pole is sleeved with the ball, and the movable mounting block of the present device moves through T type pole, and T type pole moves at the inside position department of sliding slot, so that movable mounting block moves at the outer wall position department of compression ring, and at the same time, T type pole makes movement more flexible through the ball, when movable mounting block moves, the hole diameter of mounting hole is aligned with the hole diameter of external installation position, so that sealing assembly can adapt to different installation environment.

Medical device, in particular stent or flow diverter, with a mesh structure, in particular with a self-expanding mesh structure, wherein the network structure has at least one network structure element (10) which is, in particular completely, encased by a nanostructure coating formed from fibrin nanofibers (11, 12), characterized by the fact that The nanostructured coating comprises a first layer (L1) forming a matrix of interconnected fibrin fibers (11), in particular a felt-like or nonwoven-like matrix, wherein some fibrin fibers (12) protrude freely over the first layer (L1) and form a second layer (L2) of a single-fiber structure, in particular a nap-like structure, and wherein the The nanostructured coating additionally contains an HO-1 activator that is integrated into the first layer (L1) and / or the second layer (L2).

The utility model relates to medical instrument technical field, specifically disclose a skull repair device of integrated cerebrospinal fluid shunt, including artificial bone plate, be used for repairing skull defect, the outer surface of artificial bone plate is equipped with positioning recess, the positioning recess is used for accommodating cerebrospinal fluid shunt, and the positioning recess is equipped with the fixing assembly for fixing shunt. The utility model embeds the main part of cerebrospinal fluid shunt into artificial bone plate, makes shunt main part can accommodate in the thickness range of repair device itself, thereby significantly reduced the overall profile height of implant, effectively reduced the pressure and tension generated to scalp, can prevent the scalp erosion, breakage, necrosis and other serious complications caused by implant profile too high, simultaneously, through the fixing assembly to the shunt fixation, can effectively prevent the shunt from turning over or displacement after operation, guarantee the long-term stability and safety of drainage system, and simplify the operation.

The present technology is directed to systems for treating medical conditions, such as glaucoma, and associated devices and methods. For example, in some embodiments the present technology includes an adjustable flow shunt and a sensor. When implanted in a patient, the adjustable flow shunt can be configured to fluidly couple a first body region with a second body region such that it directs the flow of fluid from the first body region to the second body region. When implanted in the patient, the sensor can measure a physiologic parameter, such as intraocular pressure. The adjustable flow shunt can be adjusted based on the measurements taken by the sensor.