1310results 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.

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.

An introducer sheath assembly for percutaneously delivering a medical device that maintains hemostasis in a patient. The assembly has a hub, a hub cap and a hemostasis valve. The introducer sheath assembly has a longitudinal axis and a lumen formed therein. The hemostasis valve has a frame portion and a valve portion, the valve portion having a plurality of slits that are offset through the thickness of the valve portion therein and an extension of the frame portion formed from an incompressible material. The extension of the frame portion is received by a valve seat feature in the hub, when the valve is received by the hub. The valve seat feature also receives a seating portion of the hub cap as the hub and hub cap are advanced into engagement, the seating portion of the hub cap advanced into the valve seat feature subjecting the incompressible extension of the frame portion to a compressive force.

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 extension set may include a tube having an outer surface. An instrument, such as a tubing or a probe, may be disposed within the tube and may include a proximal end and a distal end. A translation handle may be coupled to the outer surface of the tube and may move along the outer surface between a proximal position and a distal position to translate the distal end of the instrument between a retracted position and an advanced position. In the advanced position, the distal end of the instrument may extend beyond the distal end of the tube and into a catheter assembly and / or vasculature of a patient.

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.

A thrombus engagement tool having a flexible shaft, a clot engagement tip, and a handle. The engagement tip may include one or more radially outwardly extending structures such as a helical thread. The helical thread can be advanced through a catheter to engage a clot. The handle may be configured to be rotated by hand. When the handle is rotated, the helical thread of the engagement tip can rotate in the same direction thereby allowing the helical threat to engage the clot. The helical thread can wrap around the flexible shaft at least about one, two, or four or more full revolutions, but in some cases no more than about ten or no more than about six revolutions.

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.

Hemostatic springs and hemostatic seals comprising hemostatic springs facilitate introducing a surgical device into the vasculature of a patient during a surgical procedure. Each hemostatic spring comprises a radial array of spring segments positioned on a circular path about a central axis. Each hemostatic seal is configured to reduce an axial length of the hemostatic spring to constrict the radial array of spring segments to reduce a cross-sectional area of the central passage. Methods include axially inserting the surgical device into the hemostatic seal while compression from the hemostatic seal minimizes fluid leakage. Methods can further include reducing a frictional force of inserting the device into the hemostatic seal by reducing the axial compression to dilate the hemostatic spring.

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.

The present invention discloses an introducer system comprising an introducer sheath, a valve assembly, and a medical device passage. The valve assembly includes a flexible material with an inner surface exposed along a portion of the medical device passage and an outer surface defining a valve membrane chamber. Additionally, a compliance chamber within the valve assembly is in communication with the valve membrane chamber and houses a piston assembly movable between positions to accommodate inflation media.

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.

Valve assemblies having improved ability to selectively control flow of fluids through the catheter and prevent leakage of fluids from the proximal end of a catheter that is positioned within a patient. Such improved catheter valve assemblies also prevent leakage of fluids after repeated insertion and removal of medical instruments through the valve.

The utility model provides a blood vessel puncture sheath. The blood vessel puncture sheath comprises an outer sheath tube, a hemostasis valve, a three-way valve, a connecting tube, a thread hanging device and a dilator. The hemostasis valve is fixedly connected with the near end of the outer sheath tube; the dilator penetrates through the hemostasis valve and enters the outer sheath tube; the three-way valve is communicated with the hemostasis valve through a connecting pipe; the outer sheath tube is sleeved with the suture hanging device, the suture hanging device is close to the far end of the outer sheath tube, the far end of the outer sheath tube penetrates through the suture hanging device to be exposed, and a suture hanging hole and / or a suture hanging groove used for fixing a suture line are / is formed in the suture hanging device. The situation that the outer sheath tube is inserted too deep and makes contact with the opposite side blood vessel wall, and blood vessel injuries are caused is avoided. And the condition that the whole blood vessel puncture sheath is pushed out by blood pressure due to high blood pressure of the main artery is prevented. The situation that the whole blood vessel puncture sheath falls off due to the fact that the whole blood vessel puncture sheath is touched carelessly is avoided. In addition, the utility model further provides a blood vessel sheath set.

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

Intravascularly delivered blood pumps and associated devices, systems, and methods, are disclosed herein. A method of intravascularly delivering a blood pump in accordance with embodiments of the present technology can include, for example, advancing an elongated delivery dilator through a patient's vasculature such that a first portion of the elongated delivery dilator is externally accessible proximate to the subclavian artery and a second portion of the elongated delivery dilator is externally accessible proximate to the femoral artery. The method can further include attaching the second portion of the elongated delivery dilator to a driveline, which is coupled to a balloon at the opposite end, and then pulling on the first portion of the elongated delivery dilator to move the driveline and the balloon through the patient's vasculature to a target site with the balloon positioned within the aorta.

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.

A flushing and hemostasis apparatus for a trans-catheter surgical procedure may be provided with an elongated body. A seal assembly may be located at a proximal end of the elongated body and configured to receive a distal end of an implant loading tool therethrough. A valve assembly may be located at a distal end of the elongated body and may include a flush port. In some embodiments, the valve assembly is configured to move between an open position in which the flush port is in fluid communication with the mid-section of the elongated body and a closed position in which the distal end of the elongated body is sealed off from the mid-section. A mid-section of the elongated body may be configured to receive an element protruding from the distal end of the implant loading tool. Other flushing and hemostasis tools and methods of use are also provided.

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.