752results about "Haemostasis valves" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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 invention relates to the technical field of medical instruments, and provides a hemostasis valve structure and a sheathing canal assembly, and in the hemostasis valve structure, a valve body assembly is connected with a sheathing canal body. The two ends of the annular bag body are connected with the valve body assembly respectively, the middle of the annular bag body naturally droops, and the annular bag body is of a flexible inelastic bag body structure. And the liquid filling assembly is communicated with the annular bag body. When no instrument passes through the sheathing canal body, liquid is filled into the annular bag body through the liquid filling assembly, so that the annular bag body is expanded until the annular bag body is completely closed, and the sealing effect is achieved. When an instrument needs to be arranged in the sheathing canal body in a penetrating mode, liquid in the annular bag body does not need to be discharged, and the instrument can directly penetrate through the annular bag body in the expanded state. On one hand, operation is time-saving and labor-saving; on the other hand, due to the fact that the annular bag body is in the expansion state all the time, blood cannot flow out between the instrument and the annular bag body, and the blood loss risk is avoided.

A hemostasis valve may be used with a catheter such as an aspiration catheter. The hemostasis valve comprises a support, and at least a first lever, pivotably carried with respect to the support. A collapsible tubular sidewall defining a valve lumen is carried by the support. A filament is formed into a loop around the tubular sidewall, the filament having at least a first tail portion extending away from the loop to the first lever. A first spring may be configured to move the first lever in a direction that pulls the first tail portion away from the tubular sidewall, reducing the diameter of the valve lumen in response to reducing the diameter of the loop. A second tail portion may extend away from the loop to a second lever. Each tail portion may be attached to its respective lever, or may be slidably advanceable around a fulcrum on the lever and attached with respect to the support.

Provided are a valve and a medical device provided with the same. The hemostasis valve is a valve that is embedded into the valve container in the sheath hub (valve housing) of the sheath. Through the hemostasis valve, a tubular introduction member such as a dilator or a catheter is inserted. The hemostasis valve includes a first partition wall in a proximal side, a second partition wall in a distal side that is provided adjacently to the first partition wall, and a lubricant storage that is provided between the first partition wall and the second partition wall, the lubricant storage having capability of storing lubricant. The lubricant storage consists of a flat cylindrical concave formed on the inner (inside) face of the first partition wall in the central axial direction.

The present invention relates to a processing system for a medical device delivered into a patient's body during a medical procedure. The processing system can include a proximal valve configured to receive an intraluminal device, an optional distal valve configured to receive the intraluminal device, and a processing chamber configured to receive a portion of the intraluminal device.

The invention belongs to the technical field of medical instruments. In order to solve the problem that an existing device is tedious in operation, the multifunctional automatic injection system is designed and comprises an injector, an automatic injection device and an auxiliary Y valve, and the auxiliary Y valve is connected with a catheter, a guide wire and the automatic injection device. Therefore, the automatic injection device can inject the contrast agent, the medicine or the embolic agent in the injector, the contrast or treatment efficiency is improved, meanwhile, the guide wire can be rapidly fixed, the guide wire does not need to be completely withdrawn out of the catheter, the surgical operation difficulty is reduced, and the surgical time is shortened.

An aspiration control device can have an aspiration control valve and a switch, button, slider, trigger, grip, lever, rotating wheel, rotating valve, handle or other interface for resizing the aspiration control valve. The aspiration control interface can be conveniently positioned and configured to be manipulated while simultaneously stabilizing a catheter and / or retracting an elongated member. The aspiration control device can be integrated with a hemostasis valve, integrated with a wire gripping device, and / or attached to an inlet, outlet, hose, pump, or syringe in series with an aspiration flow path.

Disclosed are an interventional consumable delivery mechanism with a high-precision force sensing function and an interventional surgical robot slave device. Said interventional consumable delivery mechanism comprises a locking structure capable of locking or releasing interventional consumables, a rotational delivery mechanism capable of driving rotation and / or delivery of the locked interventional consumables, and a force sensing assembly capable of measuring an axial force and torsional moment applied to the interventional consumables. The rotational delivery mechanism comprises a rotating shaft driving seat and a rotating shaft that is mounted in the rotating shaft driving seat and rotatable in a forward or reverse direction. The locking structure is disposed on a first connection portion of the rotating shaft or the rotating shaft driving seat. An axial force sensing element measures the axial force applied to the interventional consumables, and a torsional moment sensing element measures the torsional moment applied to the interventional consumables around the axis, the axial force sensing element and the torsional moment sensing element both being connected to the rotating shaft. The present invention provides strong support for the force feedback technology of a master end, has high sensitivity, and exhibits convenient measurement, thereby ensuring the smooth progress of the surgery.

Biopsy caps and seals, and methods for making and using the same may be provided in conjunction with an endoscope assembly. A seal may include a main body including a circumferential outer wall surrounding a central lumen. The seal may include at least one support wall extending radially from the outer wall towards a center of the lumen, and at least one helical flap extending from the support wall helically downward along an inner surface of the outer wall, where the at least one helical flap defines an opening at the center of the lumen. The seal may alternatively include a plurality of projections extending radially inward from the outer wall towards a center of the lumen, where the plurality of projections are arranged in a series of circumferentially and angularly offset layers.

A needle protection device may include a hub, a housing disposed within the lumen of the hub, and a needle. The housing may include a tubular portion, which may include two arms coupled thereto. Each of the arms may include a first end coupled to the tubular portion, a second end disposed within the tubular portion, and a bent portion therebetween. The second end of the first arm and the second end of the second arm may form a duckbill valve. A needle may extend through the housing. Withdrawing a sharp distal tip of the needle in a proximal direction beyond the second end of each of the arms may close the duckbill valve and facilitate removal of the housing from the hub. Shielding the sharp distal tip of the needle in this manner may prevent blood spatter and exposure to blood and blood-borne pathogens.

The cyclical suction system produces an associated cyclical pressurization waveform of intermittent cyclical intervals of a vacuum pressure below atmospheric pressure and a positive pressure above the vacuum pressure. The system includes a vacuum pump that generates a vacuum pressure, a conduit connected in fluid communication to the vacuum pump, and a suction conduit connected in fluid communication to the conduit. Associated with the conduit is a positive pressure pulse generator mechanism that controls the vacuum pressure generated by the vacuum pump through the conduit via the vacuum pressure gating device and cyclically generates positive pressure pulses intermittently.

Disclosed is an access device for vascular grafts. The access device may allow two large-bore medical devices to be inserted simultaneously. The access device may include a body defining a common arm, a first proximal arm, and a second proximal arm. The common arm may include a common lumen extending from a distal end of the common arm to a proximal end of the common arm. The first arm may include a first lumen extending from a proximal end of the first arm to the common lumen. The second arm may include a second lumen extending from a proximal end of the second arm to the common lumen. The access device may include a plurality of hemostasis valves. A first hemostasis valve may be disposed at the proximal end of the first proximal arm. A second hemostasis valve may be disposed at the proximal end of the second proximal arm.

The present disclosure relates to a tearable sheath assembly, the tearable sheath assembly comprising: an introducer comprising an introducer body, a locking cap, and an introducer sheath, the introducer having a longitudinal axis and an internal cavity, the introducer body and the introducer sheath being provided with a weak portion in a direction of the longitudinal axis; and a hemostasis valve including a weakness, the hemostasis valve configured to prevent leakage of liquid to an exterior of the tearable sheath assembly. The present disclosure also relates to a hemostasis valve.