An indwelling device 1 is provided with: a sheath 20 that is capable of housing a stent graft 10; and a long shaft 30 that is configured to be capable of advancing or retreating inside the sheath along the axial direction. The shaft has a fixing tool 34 and a hollow tube 35 that are respectively engaged with a connection part 14 and a blood vessel wall fixing part 15 of the stent graft to restrict movement of an opening end 11a of the stent graft in the radial direction. The indwelling device is configured to be capable of releasing engagement between the connection part and the fixing tool and engagement between the blood vessel wall fixing part and the hollow tube independently of each other by displacing the shaft with respect to the stent graft in the axial direction.

Devices for loading intravascular treatment devices into a sheath and associated systems and methods are disclosed herein. A sheathing tool may include, for example, a first channel extending to a first opening, the first channel configured to receive a treatment device in a constrained state therethrough. The treatment device may include an elongated member and a first element and a second element at a distal region of the elongated member. The second channel may extend to a second opening, the second opening surrounded by a sidewall and configured to receive the treatment device in the constrained state therethrough, wherein the second opening is spaced apart from the first opening by a gap, and wherein a length of the gap is great enough to allow the first element to self-expand over the sidewall while the second element generally maintains its diameter in the constrained state while crossing the gap.

The techniques of this disclosure generally relate to a modular assembly including first and second stent-grafts. The first stent-graft includes a body portion having a first diameter and a waist portion having a second diameter less than the first diameter. The waist portion is at a distal end of the first stent-graft. The second stent-graft includes a captured proximal portion configured to be located within the first stent-graft. The captured proximal portion includes a seated portion configured to be located proximal to the waist portion. The seated portion has a third diameter greater than the second diameter to form a mechanical interlock between the first stent-graft and the second stent-graft.

Aspects of an expandable sheath can be used in conjunction with a catheter assembly to introduce a prosthetic device, such as a heart valve, into a patient. Such aspects can minimize trauma to the vessel by allowing for temporary expansion of a portion of the introducer sheath to accommodate the delivery apparatus, followed by a return to the original diameter once the prosthetic device passes through. Some aspects can include a sheath with a variable diameter inner liner wound in a spiral slidable configuration and an outer layer. The disclosed sheath is configured to expand from a predetermined rest diameter d.sub.r to an expanded diameter d.sub.e during application of a radial outward force by passage of a medical device through the sheath.

A delivery device can provide sequential delivery of a plurality of intraluminal devices held in a compressed state on the delivery device. Delivery platforms on the delivery device can hold an intraluminal device in a compressed position and be positioned between pusher bands that may also be radiopaque markers. A post deployment dilation device can be included. The post deployment dilation device can be a plurality of expansion filaments, a bellows, or a balloon. An intravascular device deployment method can include allowing a self-expanding intravascular device to expand, aligning the post deployment dilation device under the intravascular device, and causing the post deployment dilation device to expand radially to push outward on the intravascular device.

A delivery device can provide sequential delivery of a plurality of intraluminal devices held in a compressed state on the delivery device. Delivery platforms on the delivery device can hold an intraluminal device in a compressed position and be positioned between pusher bands that may also be radiopaque markers. A post deployment dilation device can be included. The post deployment dilation device can be a plurality of expansion filaments, a bellows, or a balloon. An intravascular device deployment method can include allowing a self-expanding intravascular device to expand, aligning the post deployment dilation device under the intravascular device, and causing the post deployment dilation device to expand radially to push outward on the intravascular device.

The invention discloses a stent delivery system capable of accurately positioning. The system comprises a movable sheathing canal, a fixed sheathing canal and a stent, the fixed sheathing canal is used for fixing stent, the movable sheathing canal comprises a handle, a stent length buckle, an inner sheathing canal, a sheathing canal inclined part, an outer sheathing canal and an outer sheathing positioning marking part, and the sheathing canal inclined part and the outer sheathing canal are integrally formed, and are arranged at front end of inner sheathing canal. The invention provides an accurate-positioning proximal end pre-release stent delivery system and method, which is simple in structure and convenient to use. The invention can realize accurate positioning of the proximal-end of the stent, that is, the invention can prevent stent from being too long or too short due to proximal-end inaccurate release of the stent through proximal-end accurate positioning.

The present embodiments relate generally to devices, systems, and methods for delivery systems including nose cones. A delivery system may include a handle and an elongate shaft coupled to the handle. The delivery system may include a nose cone having a distal opening at a distal end and a proximal opening at a proximal end, the proximal opening configured to receive the distal end of the elongate shaft. Projections or threads may couple the nose cone to the distal end of the elongate shaft.

A method and device include attaching a tether portion of a sleeve to a distal end of a catheter, placing the distal end of the catheter into a selected position within a vessel, moving a stent through a lumen of the catheter, retentively engaging a first end of the stent with a distal end of the sleeve, and detaching the sleeve about the tether portion such that the sleeve covers at least a portion of the stent at the selected position within the vessel.

A method and device include attaching a tether portion of a sleeve to a distal end of a catheter, placing the distal end of the catheter into a selected position within a vessel, moving a stent through a lumen of the catheter, retentively engaging a first end of the stent with a distal end of the sleeve, and detaching the sleeve about the tether portion such that the sleeve covers at least a portion of the stent at the selected position within the vessel.