Disclosed herein is a system for treatment including a sheath introducer and a catheter or other device. The system can have a floating hemostasis valve comprising a seal through which the shaft of the catheter can extend. The floating hemostasis valve can have elastic bellows which can allow the seal to move orthogonal to the longitudinal axis of the sheath introducer in response to an orthogonal movement of the shaft of the catheter. The elastic bellows can be configured to deform to allow the orthogonal movement of the floating hemostasis valve.

Disclosed are introducer adapters, introducer assemblies, and methods. In an example, an introducer assembly can include a syringe, a needle, and an introducer adapter fluidly coupled therebetween. The introducer adapter can include a primary conduit, a secondary conduit extending from a side of the primary conduit, and a valve including an elastomeric septum sealing a proximal portion of the primary conduit or the secondary conduit. An access guidewire is optionally loaded in the introducer adapter and sealed therein by the valve. In another example, a method can include a method for securing vascular access with the foregoing introducer assembly. Such a method can include obtaining the introducer assembly, establishing a needle tract from an area of skin to a blood-vessel lumen of a patient with the needle, and advancing at least a guidewire tip of the access guidewire into the blood-vessel lumen for the securing of the vascular access.

A catheter delivery device includes a hollow longitudinal body, a fluidic bypass, and a hemostasis valve. The hollow longitudinal body includes a clamping portion and a guide catheter. The guide catheter has a distal end for access into a vessel of a patient and a proximal end coupled to the clamping portion. The clamping portion has a distal end coupled to the guide catheter, a proximal end coupled to the hemostasis valve, and a guidewire securing section. When the guidewire securing section of the clamping portion is securing the guidewire, the fluidic bypass maintains fluid communication between the guide catheter and the hemostasis valve. In some cases, the guidewire securing section and the fluidic bypass are separated by material within the hollow longitudinal body. In some cases, the fluidic bypass is separate from the guidewire securing section outside of the hollow longitudinal body.

A hemostasis valve, a catheter sheath, and a method for sealing an interventional instrument (9), the hemostasis valve comprising a housing (1,100) and a sealing film (2,130) which is installed within the housing (1,100) and which is a tubular structure; an inner cavity (21) of the tubular structure serves as an instrument channel (11,131) and penetrates the housing (1,100); driving chambers (12,150) which are located on the periphery of the sealing film (2,130) and which are used for being filled with a fluid are provided within the housing (1,100); the hemostasis valve further comprises an energy storage mechanism (3) that can link with the fluid; the energy storage mechanism (3) correspondingly stores or releases energy when the state of the sealing film (2,130) changes; and the sealing film (2,130) is driven to seal the instrument channel (11,131) during energy release. By means of the design of the energy storage mechanism (3), deformation energy of the sealing film (2,130) is stored, thereby achieving good compatibility and a good sealing effect when different instruments pass through; in addition, by means of the configuration of parameters of the sealing film (2,130), the configuration of parameters of an energy storage structure, and the cooperation between the two, the advantages of good drawing operation feeling and small operating force changes of an instrument are achieved, and a structural basis is provided for other functions.

A method of performing a medical procedure in a cerebral vessel of a patient including advancing a first catheter system towards an embolus within a cerebral blood vessel and a second catheter system towards the embolus through the first catheter, applying aspiration pressure through the lumen of the second catheter; anchoring a distal end of the second catheter onto the embolus via the aspiration pressure; applying a proximally-directed force on the second catheter; and advancing the first catheter over the second catheter towards the embolus while the distal end of the second catheter remains anchored onto the embolus; and automatically applying aspiration pressure within the first catheter upon the second catheter portion entering into the first catheter.

The present invention relates to a multiple-use intravenous (IV) catheter assembly septum and septum actuator. In particular, the present invention relates to an IV catheter assembly having a stationary septum actuator and a blood control septum, wherein the blood control septum is configured to slide within a catheter adapter of the IV catheter assembly between a compressed state and an uncompressed state. When in the compressed state, a slit of the blood control septum is opened and the septum comprises stored compressive potential energy. When the septum is released from the compressed state, the stored compressive potential energy is release and the blood control septum is restored to its original shape, thereby closing the septum's slit.

The disclosure relates to a catheter device (1) comprising a catheter (2) and a hypodermic introducer needle (3) further comprising a levering member (23) adapted to be removably attached to the catheter (2) and further adapted to motion the catheter from a retracted proximal position to an advanced distal position in an axial direction in relation to the introducer needle (3), further comprising indicators to indicate at least the advanced positions of the catheter (2) being advanced a distance d, said distance d corresponding to the length of the bevelled tip (18) of the needle (3), and the catheter (2) being advanced a distance D, said distance D corresponding to > the length of the bevelled tip of the needle (3).

Biomedical device for carrying out an arterial catheterization comprising a catheter assembly, a Seldinger assembly, an outer sheath assembly configured to contain thereinside both said catheter assembly and said Seldinger assembly when the device is assembled before its use, at least a cannula-needle integral to the Seldinger assembly, valve means to avoid blood backflow and safety means for needle clamping, protection means for the needle, said catheter assembly comprising a thin tube, a nearly cylindrically shaped end provided with a couple of side wings, an inner cavity obtained in said end, said device being characterized in that said valve means and said safety means are located inside said outer sheath assembly in the inner cavity obtained in said cylindrical seat of the catheter assembly.

A guiding sheath has a braided layer for improved deflection characteristics and ring electrodes for electrical sensing, mapping and visualization, wherein lead wires for the ring electrodes are passed through lumened tubing position under the braided layer in a proximal portion of the guiding sheath shaft and above the braided layer in a distal portion of the guiding sheath shaft. Moreover, the hemostatic valve includes an improved friction ring with air vents to reduce the risk of air being introduced into the valve.

An apparatus includes a hemostasis valve; a base having a clamp releasably coupling a catheter to the base; a base drive member moving the base relative to the hemostasis valve along a first path; and a mechanism maintaining the position of an elongated medical device relative to the hemostasis valve while the catheter is being moved along the first path.