Needle assemblies and related methods in which a valve opener is used to push into a valve to open one or more slits on the valve to open the valve. The needle assemblies each includes a needle hub with a needle, a catheter tube with a catheter hub and the valve and valve opener positioned in the interior cavity of the catheter hub. The valve can have a valve skirt and a nose section of the valve opener can locate therein. One or more reliefs can be provided with the valve opener so that an elbow or diagonal section on a needle guard can project from a holding space within the valve opener through the relief.

The present disclosure provides at least one hemostasis valve, an introducer, and a retrieval device. The hemostasis valve may include a sealing member, a pressing assembly and a rotary motion assembly. The sealing member may be configured to define a sealing cavity which is transversely contractible. The pressing assembly is disposed at an outer periphery of the sealing member. The pressing assembly is configured for linear motion in a transverse direction of the sealing cavity to change a dimension of the sealing cavity. The rotary motion assembly is coupled to the pressing assembly, and the rotary motion assembly may be configured to convert rotary motion into the linear motion of the pressing assembly through the coupling. The hemostasis valve of the present disclosure can perform active hemostasis sealing for one or more medical devices and is convenient to use.

A catheter is provided with a collection chamber located between a seal and a cap. The seal is located distal from the collection chamber, and the cap is located proximal from the collection chamber. The seal may be opened and closed to alternately allow the passage of material into the collection chamber and prevent fluid from escaping from the shaft lumen. The cap may be opened and closed to allow the removal of a mass from the collection chamber and to prevent fluid from escaping during collection of the mass.

A seal assembly is provided for reception of an elongated surgical instrument, which comprises a body having at least one opening configured and dimensioned to permit entry of an elongated surgical instrument and defining a central longitudinal axis; a seal member formed of a resilient material and defining an aperture therein, the aperture being configured and dimensioned such that insertion of the surgical instrument into the aperture causes the resilient material defining the aperture to resiliently contact the outer surface of the surgical instrument in a substantially fluid tight manner, the seal member further including a peripheral flange element which contacts a surface of the body to form a contact seal therewith; and a fabric layer juxtaposed relative to the resilient material. The seal assembly may further include a coating applied to the seal member to reduce friction between the seal member and surgical instrumentation inserted therein. The coating is preferably a hydrocyclosiloxane membrane prepared by plasma polymerization process.

Aspects herein relate to a medical device for providing a leak-resistant seal for use in a vascular access device. In various embodiments, a device for vascular access hemostasis is included. The device can include an enclosure configured to at least partially receive a medical device, the enclosure defining a cavity. The enclosure can have a first seal portion and a second seal portion, the cavity disposed between the first seal portion and the second seal portion. The enclosure can include the second seal portion comprising a split, septum seal. The enclosure can include a barrel in structural communication with the second seal portion. The device can include a constriction ring disposed around the barrel, the constriction ring interfacing with the second seal portion to limit movement of the split, septum seal.

A delivery device for an implantable medical device may include an inner shaft configured to retain the implantable medical device at its distal end, an outer shaft slidably disposed about the inner shaft, and a locking hub affixed to the outer shaft. The locking hub may include a housing, a piston element in the housing, an actuator operatively coupled to the piston element, and a clamping gasket made of a compressible material and disposed in the housing. The actuator may be movable relative to the housing between unlocked and locked conditions. The clamping gasket may have a lumen defining a first diameter with the actuator in the unlocked condition and a second diameter with the actuator in the locked condition, the second diameter being less than the first diameter. The outer shaft and the locking hub may be fixed to the inner shaft with the actuator in the locked condition.

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.

A hemostasis valve assembly includes a housing, hemostasis valve, through-member, actuator, and pin. The through-member is slidable along a first direction between a first position that closes a hemostasis valve, and a second position that opens the valve. The actuator can displace the through-member distally along the first direction by sliding along a second direction transverse to the first direction. A motion restricting groove on the through-member includes a closed position portion in which the pin is disposed when the through-member is in the first position; a first top portion in which the pin is disposed when the through-member reaches a position distal of the second position; an open holding portion in which the pin is disposed when the through-member is in the second position; and a second top portion in which the pin is disposed when the through-member reaches a position distal of the second position.

The present invention relates to an introducer assembly. The introducer assembly includes a sheath and a hub assembly interconnected with the proximal end of the sheath, the hub assembly including a body defining an interior passageway in fluid communication with the lumen of the sheath, the body having a proximal end and a distal end. A valve assembly is positioned within the interior passageway of the body, the valve assembly having a valve member, the valve member being at least partially movable from a first position to a second position with respect to the valve collar. A vacuum chamber positioned distal to the valve assembly and in fluid communication with the interior passageway of the body and the lumen of the sheath, the vacuum chamber including a vacuum port.

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.