Abstract: An aspiration sheath system for aspirating occlusive material from a blood vessel is disclosed. The aspiration sheath system may be configured to have the ability to be unclogged, while retaining the position of the aspiration sheath in the target vasculature. The system includes an aspiration sheath including an elongate shaft extending distally from a manifold, an aspiration sleeve having an elongate shaft slidably disposed within a lumen of the aspiration sheath, and a dilator having an elongate shaft slidably disposed within an aspiration lumen of the aspiration sleeve.

Abstract: An aspiration sheath system is disclosed. The aspiration sheath system includes an expandable sheath having a proximal end region, a distal end region and a lumen extending therebetween. The distal end region has a first diameter in a delivery configuration smaller than a first diameter of the proximal end region in the delivery configuration. The system further includes a dilator and an expansion sleeve insertable within the lumen of the expandable sheath. The dilator is insertable thought he lumen of the expandable sheath without expanding the proximal end region and the distal end region. The expansion sleeve insertable within the lumen of the expandable sheath upon removal of the dilator therefrom to expand the distal end region from the first diameter of the distal end region to a second diameter of the distal end region larger than the first diameter of the distal end region.

Abstract: An example catheter comprises a catheter shaft and a sheathed scoring element, the sheathed scoring element including: shape memory elements that are configured to move between an constrained condition and a radially expanded condition; scoring members located on a portion of the shape memory elements; and a deployment sheath that is configured to move relative to the scoring members and the shape memory elements between: a delivery condition where the scoring members and at least a portion of the shape memory elements are located in the deployment sheath; and a scoring condition where: at least the portion of the shape memory elements is located distal to a distal end of the deployment sheath and the shape memory elements are configured in the expanded condition; and the scoring members are located distal to a distal end of the deployment sheath and are configured to contact a target site.

Abstract: A medical assembly for ingesting a thrombus or embolus includes an outer catheter and a middle catheter that is slidingly disposed within the outer catheter. A funnel is coupled to the middle catheter. The funnel is adapted to fit within an outer catheter lumen when the middle catheter is moved proximally relative to the outer catheter and to extend out of the outer catheter lumen when the middle catheter is moved distally relative to the outer catheter. An inner catheter is slidingly disposed within the middle catheter lumen. An ingestion sleeve is coupled to the inner catheter and passes over the funnel periphery and extends proximally therefrom. Moving the middle catheter distally with respect to the inner catheter causes the ingestion sleeve to slide over the funnel periphery, thereby pulling the thrombus or embolus through the funnel and into the middle catheter lumen.

Abstract: Stent delivery systems and methods for making and using stent delivery systems are disclosed. An example stent delivery system may include an inner member having a stent receiving region, a stent disposed along the stent receiving region, a deployment sheath axially slidable relative to the inner member, the deployment sheath having a proximal end region, a handle coupled to the deployment sheath, a rod coupled to the handle, the rod having a distal end region, a proximal end region and a first threaded portion extending from the distal end region to the proximal end region and a coupling member configured to couple the rod to the deployment sheath, the coupling member having an engagement portion. Additionally, the first threaded portion of the rod is designed to engage the engagement portion of coupling member and rotation of the rod is designed to translate the coupling member along the rod.

Abstract: A stent delivery system is adapted to deliver and release a self-expanding stent with improved force transmission efficiency and reduced energy loss. The stent delivery system includes an inner member including a stent receiving region, a proximal member that includes a buckle-reducing member that is adapted to reduce collapsibility within the proximal member, and a deployment sheath that extends coaxially about the inner member and the proximal member and is movable between a position in which the deployment sheath constrains the self-expanding stent and a position in which the deployment sheath does not constrain self-expanding stent, the deployment sheath including a stretch-reducing member that is adapted to reduce stretchability within the deployment sheath, wherein a reduced collapsibility of the proximal member and a reduced stretchability of the deployment sheath together reduce energy loss within the stent delivery system.

Abstract: Stent delivery systems and methods for making and using stent delivery systems are disclosed. An example stent delivery system may include an inner member having a stent receiving region, a stent disposed along the stent receiving region, a deployment sheath axially slidable relative to the inner member, the deployment sheath having a proximal end region, a handle coupled to the deployment sheath, a rod coupled to the handle, the rod having a distal end region, a proximal end region and a first threaded portion extending from the distal end region to the proximal end region and a coupling member configured to couple the rod to the deployment sheath, the coupling member having an engagement portion. Additionally, the first threaded portion of the rod is designed to engage the engagement portion of coupling member and rotation of the rod is designed to translate the coupling member along the rod.

Abstract: Stent delivery systems and methods for making and using stent delivery systems are disclosed. An example stent delivery system may include an inner member having a stent receiving region, a stent disposed along the stent receiving region, a deployment sheath axially slidable relative to the inner member, the deployment sheath having a proximal end region, a handle coupled to the deployment sheath, a rod coupled to the handle, the rod having a distal end region, a proximal end region and a first threaded portion extending from the distal end region to the proximal end region and a coupling member configured to couple the rod to the deployment sheath, the coupling member having an engagement portion. Additionally, the first threaded portion of the rod is designed to engage the engagement portion of coupling member and rotation of the rod is designed to translate the coupling member along the rod.

Abstract: The present invention relates generally to medical devices and, in particular, to an introducer sheath that includes a shaft including a tubular portion, an expandable portion coupled to the tubular portion and a longitudinal axis. Additionally, the expandable portion includes a first pair of leaflets and a second pair of leaflets and both the first pair of leaflets and the second pair of leaflets extend along the longitudinal axis. Additionally, the second pair of leaflets are spaced radially inward of an inner surface of the first pair of leaflets and the expandable portion is designed to shift between a first configuration and a second radially expanded configuration.

Abstract: Medical devices, medical device systems, and methods for making and using the same are disclosed. An example medical device may include an inner shaft having a stent receiving region. A bumper shaft may be disposed about the inner shaft. A deployment sheath may be slidably disposed about the inner shaft. The deployment sheath may have a body region and a distal stent covering region. The distal stent covering region may have an outer diameter that is smaller than an outer diameter of the body region.

Abstract: Stent delivery systems as well as methods for making and using stent delivery systems are disclosed. An example stent delivery system may include an elongate shaft including an inner member having a stent receiving region and a deployment sheath slidably disposed along the inner member. A handle may be coupled to the elongate shaft. A rack member may be coupled to the deployment sheath. At least a portion of the rack member may be designed to extend within the handle. The rack member may include a base portion and a displaceable portion that is displaceable relative to the base portion.

Abstract: Stent delivery systems and methods for making and using stent delivery systems are disclosed. An example stent delivery system may include an inner member having a stent receiving region, a stent disposed along the stent receiving region, a deployment sheath axially slidable relative to the inner member, the deployment sheath having a proximal end region, a handle coupled to the deployment sheath, a rod coupled to the handle, the rod having a distal end region, a proximal end region and a first threaded portion extending from the distal end region to the proximal end region and a coupling member configured to couple the rod to the deployment sheath, the coupling member having an engagement portion. Additionally, the first threaded portion of the rod is designed to engage the engagement portion of coupling member and rotation of the rod is designed to translate the coupling member along the rod.

Abstract: An example introducer and method of use is disclosed. The example introducer sheath includes a shaft including a tubular portion, an expandable portion coupled to the tubular portion and a longitudinal axis. Additionally, the expandable portion includes a first pair of leaflets and a second pair of leaflets and both the first pair of leaflets and the second pair of leaflets extend along the longitudinal axis. Additionally, the second pair of leaflets are spaced radially inward of an inner surface of the first pair of leaflets and the expandable portion is designed to shift between a first configuration and a second expanded configuration.

Abstract: Stent delivery systems as well as methods for making and using stent delivery systems are disclosed. An example stent delivery system may include an elongate shaft including an inner member having a stent receiving region and a deployment sheath slidably disposed along the inner member. A handle may be coupled to the elongate shaft. A rack member may be coupled to the deployment sheath. At least a portion of the rack member may be designed to extend within the handle. The rack member may include a base portion and a displaceable portion that is displaceable relative to the base portion.

Abstract: Medical devices, medical device systems, and methods for making and using the same are disclosed. An example medical device may include an inner shaft having a stent receiving region. A bumper shaft may be disposed about the inner shaft. A deployment sheath may be slidably disposed about the inner shaft. The deployment sheath may have a body region and a distal stent covering region. The distal stent covering region may have an outer diameter that is smaller than an outer diameter of the body region.

Abstract: A drug delivery device that uses centrifugal force to deliver a drug to a body lumen wall. The drug delivery device comprises an impeller that includes an impeller shaft; an impeller head at the distal end of the impeller shaft; a drug lumen; an impeller housing; and a housing shaft attached to the impeller housing. In use, the drug is advanced along the drug lumen to the impeller head; at least the impeller head is rotated so that when drug exits the drug lumen, the centrifugal force of the rotating impeller causes the drug to move radially outward from the drug delivery device, towards and into the body lumen wall.