982results about "Haemostasis valves" patented technology

A hub assembly includes a mount being axially movable along a drive surface, a catheter hub having a catheter, the catheter hub removably couplable with the mount, and a fluidics connector in fluid communication with the mount and the catheter hub to provide fluid and vacuum through the connector to the catheter hub.

An introducer sheath for providing access in a patient's body comprises a tubular body with a distal portion and a proximal portion, the proximal portion being configured to be inserted into the patient's body to allow a medical device to be inserted through the introducer sheath into the patient's body. In order for the introducer sheath to be removable from the patient, it can be separated along its length in a longitudinal direction. The introducer sheath further comprises at least a first handle which is pivotable about a fulcrum. The first handle has a first end portion and a free second end portion so as to form a lever, such that pivoting the handle about the fulcrum causes a contacting portion of the handle to act on a respective counter portion that is operatively connected to the distal portion of the tubular body. This creates a breaking force that causes the distal portion of the tubular body to break.

An introducer can include an introducer needle and an introducer sheath having a transition therebetween that eases tissue over a distal end of the introducer sheath without catching tissue thereon tissue despite an excised portion of the introducer needle. The introducer needle can include a needle shaft having a longitudinal needle slot extending from a proximal portion of the needle shaft through a distal needle tip, which results in an excised portion of a heel of a bevel of the needle tip. The introducer sheath can include a sheath body and a tapered sheath tip. The sheath body can be over the needle shaft sealing the needle slot thereunder but for a sheath-body opening in a proximal portion of the sheath body for an access guidewire. The introducer can include the transition from the bevel of the needle tip to at least the taper of the sheath tip.

A fluidics management system includes a cassette configured to receive saline from a saline source, receive contrast from a contrast source, and receive vacuum from a vacuum source. The cassette includes a plurality of saline connectors, each of the plurality of saline connectors configured to couple to one of a plurality of catheters to provide saline thereto, a plurality of contrast connectors, each of the plurality of contrast connectors configured to couple to one of the plurality of catheters to provide contrast thereto, and a plurality of vacuum connectors, each of the plurality of vacuum connectors configured to couple to one of the plurality of catheters to provide vacuum thereto.

Systems and methods for the intravascular treatment of clot material within a blood vessel of a human patient are disclosed herein. A method in accordance with embodiments of the present technology can include, for example, engaging an interventional device of a catheter system with clot material in a blood vessel and withdrawing the interventional device and the portion of the clot material through a guide catheter. In some embodiments, the catheter system can include an attachment / valve member coupled to a proximal portion of the guide catheter, and the method can include unsealing the attachment / valve member to facilitate withdrawing the interventional device through the attachment / valve member without significant retention of clot material within the attachment / valve member. The method can further include resealing and aspirating the guide catheter before advancing another interventional device to the clot material to again engage and remove clot material from the blood vessel.

There is provided an introducer system for percutaneously delivering a first and a second medical device to a patient. The system may comprise an introducer sheath having a longitudinal axis and a lumen formed therein. The system may also comprise a bifurcated hub coupled to a proximal end of the sheath. The hub may comprise a first arm having a first lumen and a first hemostasis valve for the passage of the first medical device. The hub may also comprise a second arm coupled to the first arm and having a second lumen and a second hemostasis valve for the passage of the second medical device. Further, the hub may comprise a connection port such that the first lumen and the second lumen are in communication with the lumen of the introducer sheath for the passage of at least one of the first and second medical devices through the introducer sheath for delivery to the patient.

A sheath for producing a fully sealed access to the interior of a vessel of an animal or human body comprises a base sheath having a tubular body defining a pass-through channel. The base sheath is adapted to be inserted into the vessel through a vessel aperture. A wall of the tubular body of the base sheath has a through channel. This channel extends in the wall from the distal end towards the proximal end. The channel can be present separately from the pass-through channel of the base sheath or can form a sideways extension of the pass-through channel, at least at the distal end. Such through channel is adapted to conduct blood from the vessel to the proximal end of the sheath when the sheath has been inserted into a vessel.

An introducer can include an introducer needle (134) and an introducer sheath (136) having a transition therebetween that eases tissue over a distal end of the introducer sheath without catching tissue thereon tissue despite an excised portion of the introducer needle. The introducer needle can include a needle shaft (140) having a longitudinal needle slot (146) extending from a proximal portion of the needle shaft through a distal needle tip (144), which results in an excised portion of a heel of a bevel (150) of the needle tip. The introducer sheath can include a sheath body (162) and a tapered sheath tip (170). The sheath body can be over the needle shaft sealing the needle slot thereunder but for a sheath-body opening (166) in a proximal portion of the sheath body for an access guidewire.

A delivery system for delivering an implantable medical device, such as a prosthetic heart valve, intravascularly to a target site, such as a heart valve annulus in a patient. The system includes a catheter assembly consisting of a plurality of concentrically arranged catheters positioned within an outer sheath and a handle assembly that includes a plurality of controls that selectively translate the catheters relative to one another to deploy the medical device from the outer sheath. An optional inflatable balloon on the catheter assembly helps to visualize the position of the medical device prior to deployment. The delivery system accommodates both the deployment of the medical device as well as re-sheathing should that become necessary.

Devices, systems, and methods for sealing medical devices, particularly during intravascular access, are disclosed herein. Some aspects relate to a hemostatic valve for sealing a wide range of medical devices, such as catheters, wires, embolectomy systems. The valve can include an elongate member having a first end, a second end, and a central lumen extending therebetween. A reinforcement structure extends along at least a portion of the elongate member and is coupled to the elongate member. A shell defining a first aperture and a second aperture may be included, which first and second apertures can be fluidly coupled by the elongate member. A tensioning mechanism is coupled to the shell and to the elongate member, the tensioning mechanism can be moveable between a first configuration wherein the tensioning mechanism is collapsed and the central lumen is sealed and a second configuration wherein the central lumen is open.

Systems and methods for the intravascular treatment of clot material within a blood vessel of a human patient are disclosed herein. A method in accordance with embodiments of the present technology can include, for example, engaging an interventional device of a catheter system with clot material in a blood vessel and withdrawing the interventional device and the portion of the clot material through a guide catheter. In some embodiments, the catheter system can include an attachment / valve member coupled to a proximal portion of the guide catheter, and the method can include unsealing the attachment / valve member to facilitate withdrawing the interventional device through the attachment / valve member without significant retention of clot material within the attachment / valve member. The method can further include resealing and aspirating the guide catheter before advancing another interventional device to the clot material to again engage and remove clot material from the blood vessel.

A catheter hub assembly. The catheter hub assembly includes a catheter hub body, a septum and a septum retainer, the catheter hub body having a distal end, a proximal and an internal wall defining an internal fluid passageway therebetween, the internal wall defining a transitional step within the internal fluid passageway, the septum positioned within the internal fluid passageway such that a distal end of the septum abuts up against the transitional step, the septum retainer at least partially receivable within the internal fluid passageway and having an outer wall shaped and sized to interlock with the inner wall of the catheter hub body, the outer wall including one or more lateral ribs configured to inhibit rotation of the septum retainer relative to the catheter hub body.

A neurovascular catheter is provided, such as for distal neurovascular access or aspiration. The catheter includes an elongate flexible tubular body, having a proximal end, a distal end and a side wall defining a central lumen. The side wall includes a tubular inner liner, a tie layer separated from the central lumen by the inner liner, a helical coil at least partially overlapping the tie layer, and a tubular braid. A first section of adjacent windings of the helical coil can be spaced farther apart from each other than a second section of adjacent windings of the helical coil.

Devices, systems, and methods for sealing medical devices, particularly during intravascular access, are disclosed herein. Some aspects relate to a hemostatic valve for sealing a wide range of medical devices, such as catheters, wires, embolectomy systems. The valve can include an elongate member having a first end, a second end, and a central lumen extending therebetween. A reinforcement structure extends along at least a portion of the elongate member and is coupled to the elongate member. A shell defining a first aperture and a second aperture may be included, which first and second apertures can be fluidly coupled by the elongate member. A tensioning mechanism is coupled to the shell and to the elongate member, the tensioning mechanism can be moveable between a first configuration wherein the tensioning mechanism is collapsed and the central lumen is sealed and a second configuration wherein the central lumen is open.

To provide systems, devices and methods for capturing stone fragments from lithotripsy systems.SOLUTION: A lithotripsy device comprises a handpiece, a probe, an energization source to deliver energy, a suction passage, and a capture device. The device comprises a container and a capture element. The container comprises a storage space, an entry port to couple to the handpiece at the suction passage, and an exit port. The capture element is connected to the container and configured to facilitate capture of stone fragments within the storage space.SELECTED DRAWING: Figure 3

The invention discloses an interventional robot slave end device for driving double guide wires and a single catheter, which is characterized in that a first port control module, a first clamping rotation and port control module and a second clamping rotation mechanism are sequentially arranged on a first linear rail group, and a third clamping rotation mechanism is arranged on a second linear rail group; the rear portion of the first guide pipe is arranged on the first port control module, the rear portion of the first port control module is connected with the orbital transfer pipe or the rear portion of the first port control module is aligned with the orbital transfer pipe, and the front portion of the second guide pipe is directly inserted into the first guide pipe or inserted into the first guide pipe through a forked section of the orbital transfer pipe. The rear end of the second catheter is installed on the first clamping rotation and port control module, the first guide wire is installed in the second clamping rotation mechanism, and simultaneous driving of the double guide wires and the single catheter is achieved through the orbital transfer guiding function of the orbital transfer pipe. Convergence of the guide wires and / or the guide pipes is achieved in an orbital transfer pipe mode, and therefore the multiple guide wires and the multiple guide pipes move in place in a coordinated mode.

Systems and methods are adapted for treating the carotid artery. The systems include interventional catheters and blood vessel access devices that are adapted for transcervical insertion into the carotid artery. Embodiments of the systems and methods can be used in combination with embolic protection systems including blood flow reversal mechanisms, arterial filters, and arterial occlusion devices.

An extravascular system is provided which includes a catheter adapter having a blood control septum configured to control flow of a fluid through the catheter adapter, the catheter adapter further having a catheter configured for intravenous insertion. The extravascular system further includes a septum activator slidably inserted within the catheter adapter and configured for advancement through the blood control septum to provide a fluid pathway through the blood control septum. Further still, the extravascular system includes an external safety mechanism comprising a needle hub and a needle shield interconnected via a tether, wherein the needle shield includes a safety clip that is configured to retain a sharpened end of the introducer needle within the needle shield. Some implementations further comprise an access port forming a portion of the catheter adapter and providing selective access to the lumen of the catheter adapter.

A hemostasis valve capable of controlling a flow of fluid in a tube or catheter to and from a vasculature of a human patient or animal subject. An exemplary embodiment of the hemostasis valve includes a valve member having a lumen with a proximal end and a distal end for receiving flexible tubing or a catheter. The hemostasis valve includes one or more constricting wires that are tensioned by connections to valve member components. The hemostasis valve includes one or more force receiving contact surfaces connected to at least one of the one or more constricting wires configured to cause the contracting wires to constrict the flexible tube or catheter passing therethrough, when the one or more force receiving contact surfaces are in flow restricting state. The force receiving contact surfaces cause the constricting wires to release the flexible tube or catheter passing therethrough, when the one or more force receiving contact surfaces are in a not is a flow restricting state.

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.

Systems are provided including a sheath and cannula combination device for permitting a user to select between directing blood flow through a first cannula portion of the combination device in a cannula mode and enabling an interventional medical procedure through a second sheath portion of the combination device in a sheath mode, or performing both modes simultaneously. The combination device may include a connector hub configured to auto-washout stasis regions of blood within the first cannula portion. The system may include a series of removable caps for temporarily sealing the first and / or second portions of the combination device, such that the user may seamlessly select when to use the combination device in the cannula mode, the sheath mode, both the cannula and sheath modes simultaneously, or neither the cannula mode nor the sheath mode.

A sheath for producing a fully sealed access to the interior of a vessel of an animal or human body comprises a base sheath having a tubular body defining a pass-through channel. The base sheath is adapted to be inserted into the vessel through a vessel aperture. A wall of the tubular body of the base sheath has a through channel. This channel extends in the wall from the distal end towards the proximal end. The channel can be present separately from the pass-through channel of the base sheath or can form a sideways extension of the pass-through channel, at least at the distal end. Such through channel is adapted to conduct blood from the vessel to the proximal end of the sheath when the sheath has been inserted into a vessel.

The invention relates to a valve used in medical procedures. More specifically the invention relates to an introducer sheath valve used in minimally invasive and conventional surgical procedures. The valve may accommodate a wide range of surgical implement diameters, shapes, and multiple implements without imposing the high frictional forces of known valves.

An introducer sheath may include a valve hub and an elongate shaft extending from the valve hub. The valve hub may include a proximal end defining a first port having a first port entry opening and a second port having a second port entry opening. The introduce sheath may include a first seal disposed at the first port and aligned with the first port entry opening and a second seal disposed at the second port and aligned with the second port entry opening. The first port may be parallel with the second port. The valve hub may couple with a stabilizer configured to couple with and axially fix a medical device extending through one or both of the first port and the second port.

Devices and methods establish and facilitate retrograde or reverse flow blood circulation in the region of the carotid artery bifurcation in order to limit or prevent the release of emboli into the cerebral vasculature such as into the internal carotid artery. The methods are particularly useful for interventional procedures performed through a transcarotid approach or transfemoral into the common carotid artery.

The utility model relates to the technical field of arterial sheathing canals, in particular to a femoral artery sheathing canal with a fixing patch, which solves the technical problems that two persons cooperatively control the femoral artery sheathing canal in the prior art, time and labor are wasted, and the operation time is prolonged, and comprises a sheathing canal body, a hemostasis sheathing canal seat, a three-way valve and a flexible fixing patch, the middle of the flexible fixing patch is fixedly connected with a hard special-shaped clamping groove, and the hard special-shaped clamping groove is matched with the hemostasis sheath tube base, the end of the sheath tube body connected with the hemostasis sheath tube base and the end of the connecting tube. A notch is formed in the flexible fixing patch, and after the hemostasis sheath tube base is clamped and matched with the hard special-shaped clamping groove, the end of the hemostasis sheath tube base corresponds to the notch in position; the lower surface of the flexible fixing patch is provided with a bonding layer used for being pasted on the skin. The femoral artery sheath tube can ensure that necessary passages of a femoral artery approach nerve interventional operation are smooth, manpower resource waste in clinical work is reduced, the probability that the femoral artery sheath tube is disengaged is greatly reduced, and it is ensured that the nerve interventional operation is carried out safely and smoothly.

There is provided an introducer system for percutaneously delivering a first and a second medical device to a patient. The system may comprise an introducer sheath having a longitudinal axis and a lumen formed therein. The system may also comprise a hub coupled to a proximal end of the sheath. The hub may comprise a first arm having a first lumen and a first hemostasis valve for the passage of the first medical device. The hub may also comprise a second arm coupled to the first arm and having a second lumen and a second hemostasis valve for the passage of the second medical device. Further, the hub may comprise a connection port such that the first lumen and the second lumen are in communication with the lumen of the introducer sheath for the passage of at least one of the first and second medical devices through the introducer sheath for delivery to 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 lithotripsy device includes a handpiece, a probe extending therefrom, an excitation source delivering energy to a distal end of the probe, an aspiration passage extending from the probe distal end through the handpiece, and a capture device, the device including a container and a capture element, the container including a storage space, an inlet port connecting to the handpiece at the aspiration passage, and an outlet port, the capture element connected to the container to facilitate capture of stone fragments in the storage space. A method may include fragmenting stones with the lithotripsy device, drawing a vacuum through the device to pull the stone fragments and waste fluid therethrough, drawing a vacuum through the stone capture device connected to the lithotripsy device, depositing the stone fragments in the stone capture device using the capture element, and drawing a vacuum through the device.

The disposable tearable catheter sheath comprises a sheath tube and an expansion tube penetrating through the interior of the sheath tube, a sheath tube connector is arranged at the insertion rear end of the sheath tube, tearing marks are arranged on the two sides of the surface of the sheath tube in the axis direction, and an expansion tube connector is arranged at the insertion rear end of the expansion tube. And a sealing assembly is arranged between the sheath tube joint and the expansion tube joint. The hemostasis valve is simple in structure and reasonable in design, it is guaranteed that a doctor can tear the sheath conveniently and rapidly, a torn opening is smooth, damage to blood vessels and nerves of a patient is reduced, and the firmness of the hemostasis valve is guaranteed.