468results 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.

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.

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

A 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 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.

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 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.

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.

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 utility model discloses an intervention conveying device, which particularly relates to the medical field and comprises a conveying sheath tube seat, an external thread end ring is arranged at one end of the conveying sheath tube seat, a conveying sheath tube is connected to the inner side of the external thread end ring, and a developing ring is mounted at the end of the conveying sheath tube. An external thread is arranged at the other end of the conveying sheath tube and located in the external thread end ring, a tilting part is arranged at one end of the external thread end ring, the external thread of the external thread end ring is connected with a nut, a hemostasis valve is installed at the other end of the conveying sheath tube seat, and one end of the hemostasis valve is communicated with a connecting tube. A locking structure is designed after the conveying sheathing canal is in threaded connection with the external thread end ring, the stability when the conveying sheathing canal is connected with the external thread end ring is improved, the phenomenon of loosening is not prone to occurring, comfort when an operator holds the conveying sheathing canal and the external thread end ring is improved conveniently, and the conveying sheathing canal can be locked when the conveying sheathing canal and the external thread end ring are loosened and placed after connection is completed. And the collision strength with a placement surface during placement is buffered, and the placement stability is improved.

Methods and apparatuses for blood clot aspiration. Described are fluid management components and assemblies for blood clot extraction from a patient's body and for filtering blood and recirculating blood back into the patient's body.

A medical device assembly includes a medical device and a detachable hemostasis valve. The medical device includes a hub that defines a lumen extending through the hub, and a normally open seal that is disposed within the hub, and an access sheath cap that is adapted to reversibly close the normally open seal. The normally open seal includes an aperture extending through the normally open seal that is coaxial with the lumen. The detachable hemostasis valve includes a valve hub that is adapted to be removably secured to the access sheath cap and a normally closed seal assembly that is disposed within the valve hub.

Devices and methods for providing a hemostatic valve fluid seal within a guide catheter are disclosed. A delivery apparatus can include a handle including a proximal segment including one or more fluid seals mounted within the proximal segment, an intermediate segment disposed adjacent and distal to the proximal segment, the intermediate segment including an inner surface defining a first lumen having a first inner diameter, and a distal segment disposed adjacent and distal to the intermediate segment, a shaft extending distally from the handle, the shaft including a second lumen extending between a distal end and a proximal end of the shaft, the second lumen including a second inner diameter that is smaller than the first inner diameter of the first lumen, and a fluid seal that is a circular elastomeric silicone comprising two perpendicular cross-hair cuts at the center of the seal and extending partially through the seal.

Improved securement devices for use with intracardiac blood pump assemblies are provided. The present technology provides securement devices that may be used with a sheath assembly (e.g., an introducer sheath assembly, repositioning sheath assembly), and which are configured to restrict movement of an object (e.g., the catheter of the pump assembly) within the sheath assembly except when a mechanism (e.g., button) of the securement device is actively being actuated (e.g., pressed, held, etc.).

An introducer sheath including a valve hub and an elongate shaft extending from the valve hub. The valve hub defines a main port and a side port. The main port includes a hub body, a compressible seal disposed within the hub body, a pusher at least partially positioned within the hub body and slidably movable relative thereto, and a lock nut surrounding the pusher. The lock nut is threadably engaged with the hub body such that rotation of the lock nut moves the pusher axially toward and / or away from the compressible seal.

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

A kit of parts for an exhaled breath condensate collection device. The kit comprises an assembly including a mouthpiece module. The kit further comprises a collection vessel configured to be cooled in use and configured for insertion into the assembly. The collection vessel defines a sealed and resealable chamber for collecting exhaled breath condensate in use. The collection vessel has a vessel breath inlet for admitting exhaled breath into the chamber. The kit of parts is configured such that the collection vessel is removable from the device in a sample containment configuration in which the collection vessel chamber is resealed. One or more parts of the kit of parts is configured and / or operable such that the collection vessel is caused to be resealed into the sample containment configuration after sample collection before the collection vessel is fully removed from the device.

A system for insertion into a vasculature of a patient is disclosed. The system utilizes a primary tubular sheath body coupled to a distal portion of an intermediate tubular sheath body, and a hub coupled to a proximal portion of the intermediate tubular sheath. The hub may be couplable to a dilator via an interaction between a dilator cap and the hub, and the hub may contain a hemostatic valve with a foam member having one or more visibly identifiably regions.

The present disclosure relates to a seal assembly of a surgical access assembly. The access assembly includes an instrument valve housing and a valve assembly disposed within a lumen of the instrument valve housing. The valve assembly includes a guard assembly and a seal assembly disposed distal of the guard assembly. In embodiments, the seal assembly includes a plurality of seal segments in an overlapping configuration. Each seal segment of the plurality of seal segments includes a seal portion having a smooth surface and a ribbed surface. The ribbed surface includes a plurality of ribs extending in a radial direction.

A medical device assembly includes a medical device and a detachable hemostasis valve. The medical device includes a hub that defines a lumen extending through the hub, and a normally open seal that is disposed within the hub, and an access sheath cap that is adapted to reversibly close the normally open seal. The normally open seal includes an aperture extending through the normally open seal that is coaxial with the lumen. The detachable hemostasis valve includes a valve hub that is adapted to be removably secured to the access sheath cap and a normally closed seal assembly that is disposed within the valve hub.

Disclosed herein is a puncturable septum (1) for use in drug reservoirs and infusion sets. The puncturable septum (1) comprises an elastic core (11) from a core material and a periphery (10) from a periphery material, the periphery material being more rigid than the core material. The elastic core (11) is entirely embedded within the periphery (10).

A catheter assembly (10) comprises a catheter (22), a needle (12) having a sharp distal tip disposed in the catheter (22), a catheter hub (14) housing the catheter (22) and the needle (12), the catheter hub (14) having a collar (34) including a notch (36), a needle shield (20) connected to the catheter hub (14) when the needle (12) is in a first position, and a clip (40) disposed in the needle shield (20) that cooperates with the needle (12), wherein the clip (40) engages the catheter hub (14) in the first position of the needle (12), and the clip (40) disengages the catheter hub (14) via the notch (36) when the needle (12) is retracted to a second position to enclose at least a portion of the needle (12). The clip (40) is mounted in the outer housing (38) of the needle shield (20) via a spade (66) having an outer wall (70) exposed to the outside of the needle shield (20), in order to reduce the overall width of the needle shield (20).

[Problem] To provide a medical instrument which enables selective switching of a hemostatic valve assembly between an open state and a closed state by means of a simple operation, and which makes it possible to smoothly insert a dilator or a medical device even in the closed state. [Solution] A housing member 210 of a hemostatic valve assembly 200 comprises: a cylindrical region 215d that is positioned closer to the distal end side than a push-in member 220; and an inclined region 215c that continuously extends from the distal end of the cylindrical region toward the distal end side, and that has a first through hole 217 having a diameter which decreases from the base end toward the distal end. The push-in member is configured to be movable between a first position P1 at which the base end portion 233 of a seal member 230 is positioned in the cylindrical region, and a second position P2 which is positioned closer to the distal end side of the cylindrical region in comparison to the first position and at which at least a portion of the distal end portion 231 of the seal member is pushed into the inclined region. The diameter of an insertion hole 237 of the seal member decreases from the base end surface 233a toward the distal end surface 231a, and the inclination angle θ1 of the inclined region is more obtuse than the inclination angle θ2 of the insertion hole.

A connector (120, 300) and sheath (100, 200) assembly is configured to be releasably disposed over a medical device. The connector and sheath assembly can include a valve connector (120, 300) including a first body portion (302), a second body portion (304), and a lumen (310) extending therethrough, and an elongate shaft (206) including a lumen (208) and a joint (212). The lumen and the joint can extend from a proximal end (202) to a distal end (250) of the elongate shaft. The elongate shaft can be releasably coupled to the valve connector. The joint can be movable from an interlocked configuration configured to maintain the elongate shaft in a generally tubular configuration, and an open configuration defining an opening extending along a length of the elongate shaft.

The present invention provides a device and method for providing an internal balloon sheath. [Solution] One device includes a sheath (400) for insertion through a patient's arterial incision. The sheath comprises a tubular sheath body (402) having a longitudinal axis, a proximal opening, a distal opening, an outer surface, and an inner surface that defines a lumen between the proximal and distal ends for the catheter device to pass through. The sheath also comprises an inflatable balloon (410) positioned within the lumen. The inflatable balloon provides a longitudinal space within the lumen between the inner surface of the sheath body and the catheter device (422) when the catheter device is positioned within the sheath and the balloon is inflated. It is configured to occupy the space and to fluidly seal the lumen.

A dynamic radial seal for Touhy-Borst adapters is provided. The seal has a breaking pressure above typical pressure regimes encountered in vivo in the blood of human subjects. A Touhy-Borst adapter is also provided which incorporates the dynamic radial seal.