A hemostasis valve for use in a medical device. The hemostasis valve may include a generally cylindrical body having a proximal side, a distal side, and a thickness extending therebetween. The proximal side may include a tapered central region having a surface sloped towards a center of the body and the distal side may include a distally extending curved central region.

A securement device configured to secure an external portion of a medical device to the skin surface of a patient after an internal portion of the device has been placed in the patient is disclosed. The securement device includes a retainer that is employed to securely retain the external portion of the medical device in place. The retainer is attached to a base, such as an adhesive pad that adhesively attaches to the skin surface. In one embodiment, therefore, a retainer comprises a body defining a channel configured to receive therein a portion of the medical device, and at least one foot extending from the body that is configured to stabilize the retainer with respect to a skin surface. The retainer body further includes a nose that is configured to deflect a portion of the external portion of the medical device toward the skin insertion site.

A sheath valve housing including: an input port disposed on a proximal side of the sheath valve housing; an output port disposed on a distal side of the sheath valve housing, the input port and output port defining a longitudinal axis extending therethrough; a chamber disposed within the sheath valve housing between the input port and the output port and centered on the longitudinal axis, a catheter pathway being defined within the sheath valve housing through the chamber between the input port and the output port; and a plurality of ribs disposed about the chamber so that a member is aligned with the longitudinal axis upon insertion into the chamber.

A hub defines a lumen with a longitudinal axis along the length of the hub. An outer surface of a distal portion of the hub tapers inwardly toward the longitudinal axis as the distal portion extends distally. A strain relief includes a proximal portion configured to receive the distal portion of the hub. The strain relief defines a lumen that substantially aligns with the hub lumen when the proximal portion receives the hub. The hub and/or strain relief are configured to be fixedly attached to a catheter body such that a catheter body lumen substantially aligns with the hub lumen and the strain relief lumen when the strain relief receives the distal portion of the hub. Outer surfaces of the strain relief and hub define substantially similar distances to the longitudinal axis along an interface between the two outer surfaces when the strain relief receives the hub.

Catheters that includes inner and outer elongate shafts, each of which is secured relative to an end of an inflatable member. Balloon bonding locations may be disposed radially inward relative to an outer dimension of the outer elongate shaft.

A medical device includes an elongate shaft including a multifilar coil comprising a first strand and a second strand wound in the same winding direction, the multifilar coil comprising a first section having a first end and a second end wherein the first strand and the second strand are wound with identical pitch patterns between the first end and the second end of the first section, the multifilar coil further comprising a second section having a first end and a second end, wherein the first strand and the second strand are wound with different pitch patterns from each other between the first end and second end of the second section, and a polymeric tubular member coextending with the multifilar coil.

An intravenous (IV) catheter system may include a catheter adapter having a proximal end and a distal end. The IV catheter system may also include a cannula extending through the catheter adapter. A proximal end of the cannula may include a notch. The IV catheter system may also include a needle hub, which may be coupled to the proximal end of the catheter adapter. The needle hub may include a flashback chamber, which may be in fluid communication with the notch when the IV catheter system is in an insertion configuration.

Catheters are described that have improved flow characteristics that may be particularly helpful when delivering embolic agents within a blood vessel. One catheter includes a fluid flow modifier that is configured to create laminar fluid flow out of a distal end of the catheter to help reduce turbulence and achieve predictable fluid movement. Another catheter includes scavenging ports that are configured to suction in embolic agents that have refluxed proximally back from a distal end of the catheter.

Intraluminal imaging devices and methods of assembling the intraluminal imaging devices are provided. For example, an intraluminal imaging device can include a flexible elongate catheter body and a rigid imaging assembly coupled to a distal portion of the elongate catheter body. A distal portion of the inner member is positioned within a lumen of the imaging assembly, and the flexible elongate member comprises a strain relief layer positioned around the inner member. A distal portion of the strain relief layer is positioned radially between the inner member and the imaging assembly, and a proximal end of the strain relief layer is positioned distally of a proximal end of the inner member, forming a transition region. The transition region can prevent bending or kinking of the flexible elongate catheter body when the intraluminal imaging device is navigating tortuous regions of the patient's anatomy.

Fluid delivery systems comprising catheters used to deliver a fluid into a medical device to which the catheter is attached. Methods and devices for eliminating the effects angular strain on the catheters that lead to kinking and pinching of the catheter.