Valve systems and steering systems for catheters and methods of using the same.

A medical valve assembly includes a tube extending between proximal and distal tube ends. A plunger plate extends radially from the distal tube end, and a valve housing surrounds the tube and extends between proximal and distal valve housing ends. The valve housing includes a flange extending radially inwardly from the distal valve housing end and disposed in spaced relationship with the plunger plate to define a distance dimension D extending therebetween. An elastomeric seal is compressed between the plunger plate and the flange to establish a closed condition of the medical valve assembly. The elastomeric seal axially moves one of the valve housing and the tube relative to the other when a medical device is inserted into the medical valve assembly to automatically increase the distance dimension and establish an open and sealed condition of the medical valve assembly with the inserted medical valve.

A hemostasis valve for use with catheters in intravascular procedures. The hemostasis valve comprising a sealable fluid channel that bifurcates from a single distal lumen to two proximal lumens. An upper proximal lumen may include a funnel shaped opening to improve aspiration potential. Rotating locking mechanisms are attachable at the ends of the hemostasis valve to interlock coaxial devices or to form seals around coaxial devices. Injection molding may be used to manufacture a hemostasis valve and its components. A mold and core pins may impart external and internal shapes to a molten polymer. Once the polymer has cooled, the molded component is separated from any pins or molds and attached to other molded components to form an assembled hemostasis valve.

A medical connector for use in a fluid pathway includes a substantially transparent housing having a proximal end with a proximal opening and a distal end with a distal opening, and a cavity extending therebetween. The connector provides a substantially visible fluid flow path extending through a substantial portion of the connector.

Hemostasis valve devices and methods of use are disclosed. The hemostasis valve devices include a body member, a slide member, an introducer member, a valve cap, and a valve member. The body member and slide member can be gripped by a user's finger and thumb, respectively. The slide member can be distally displaced by the user's thumb to distally displace the introducer member through the valve member to open the valve member to allow passage of a medical appliance through the valve member. The introducer member can be selectively locked in a distal position to keep the valve open.

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.

According to one aspect of the disclosure, a delivery device may include a handle, a catheter sheath extending distally from the handle, and a hemostasis valve positioned within the handle. The hemostasis valve may be located proximal to the catheter sheath and distal to a proximal end of the handle. The delivery device may also include a hemostasis bypass assembly coupled to the handle. The hemostasis bypass assembly may include a bypass tube coupled to an actuator. The actuator may be configured to be transitioned between a first condition in which a distal end of the bypass tube is positioned proximal to the hemostasis valve and the hemostasis valve is closed, and a second condition in which the distal end of the bypass tube traverses the hemostasis valve and the hemostasis valve is opened.

A hemostasis valve hub for a sheath, such as an introducer sheath, includes a hub base including a first arm defining a first lumen and having a distal end and a proximal end and a second arm extending from the first arm and defining a second lumen and having a distal end and a proximal end, a seal positioned within the first lumen and adjacent a lock nut, the lock nut engaged with the proximal end of the first arm and positioned at least partially within the first lumen, a primary seal positioned adjacent the proximal end of the first arm, and a secondary seal positioned adjacent the proximal end of the second arm.

This patent document discloses devices and associated methods for catheter and guidewire management in a surgical setting. Implementations can include a hemostasis valve configured to prevent the backflow of blood during a medical procedure. The hemostasis valve can have a valve body defining an inner lumen extending from a proximal end of the body to a distal end of the body. The inner lumen can be configured to accommodate passage of one or more elongate interventional devices therethrough. An interventional device management component can be positioned at the proximal end of the valve body. The interventional device management component can comprise a body defining a first seal member lumen configured to receive a first elongate interventional device and a second seal member lumen configured to receive a second elongate interventional device. A narrow slit configured to receive a guidewire can connect the seal member lumens.

Aspects herein relate to a low-friction septum for providing a leak-resistant seal for use in a vascular access device. In an embodiment, a device for vascular access hemostasis is included having an enclosure defining a cavity and configured to at least partially receive a medical device. The device can include a first seal portion and a second seal portion, the cavity disposed between the first seal portion and the second seal portion. The device can include a barrel in structural communication with the second seal portion, the second seal portion including a septum seal. The second seal portion can define two or more discrete portions, each separated by one or more split lines. The discrete portions can include a mating surface to interface with mating surfaces of other discrete portions. The mating surface can include a surface topology including raised portions and depressions. Other embodiments are also included herein.