Abstract:
A stent graft delivery system (50) has a stent graft (74) retained on it.The stent graft has an exposed proximally extending self expanding stent (76) which is retained in a distally opening capsule (78) at the distal end of a nose cone dilator (58) on the delivery system. A trigger wire (80) extends from a release mechanism (82) the distal end of the delivery system into a first aperture (84) in the capsule, around a proximal bend (86) of the exposed stent and out of the first aperture in the capsule and extending proximally into a second aperture (88). The trigger wire prevents premature release of the exposed stent.
Abstract:
A balloon catheter is provided that may be used to dilate hardened regions of a stenosis. The balloon catheter is provided with one or more dilation elements (130, 320) that extend along a surface of a balloon (140, 311). Each dilation element (130, 320) is connected to an outer surface (140, 311) of the balloon by a connector (120, 330). The connector (120, 330) is sufficiently sized and designed to undergo stress-induced plastic deformation incurred during blow molding so that a significant portion of each of the dilation elements (130, 320) does not become absorbed into the wall of the final blow molded balloon (150), thereby maintaining the structural integrity of each of the dilation elements (130, 320).
Abstract:
Catheter balloon assemblies (10) for delivering a therapeutic agent to a body vessel are provided, as well as related methods of manufacturing and methods of treatment. The catheter balloon assemblies may include a concentrically disposed dual balloon assembly at the distal portion of the catheter having an inner balloon (44), a porous outer balloon (42) concentrically arrayed around the inner balloon and a catheter shaft (30) adapted to deliver a therapeutic agent to the body vessel through the apertures in the outer balloon. Radial outward expansion of the inner balloon may urge the outer balloon into contact with the wall of a body vessel, where the therapeutic agent may be delivered from the catheter shaft through apertures in the outer balloon directly to the wall of the body vessel. Preferably, the catheter balloon assemblies include a stiffening' member (210) within the proximal portion and/or a plurality of lumens lined with a fluorinated hydrocarbon to independently inflate the inner balloon, deliver the therapeutic agent through the outer balloon and house a wire guide (50). The catheter balloon assemblies may provide improved tractability and/or pushability characteristics.
Abstract:
An endoluminal prosthesis system for a branched body lumen comprises a branch vessel prosthesis (11 ). The branch vessel prosthesis (11 ) is deployable within a branch vessel body lumen and comprises a stent (48) having a generally tubular body portion (33), a flareable proximal end portion (36), and a coupling portion (38) disposed intermediate the body portion and the flareable portion. The coupling portion is preferably more crush-resistant than the body portion.
Abstract:
An elongate flexible catheter tip is disclosed herein. This catheter tip may include a longitudinal axis extending between a proximal end and a distal end. It may further comprise a corrugated region located between the proximal end and the distal end. The elongate flexible catheter tip, as disclosed herein, may be employed with a large variety of dilation catheters.
Abstract:
Delivery systems and methods of making delivery systems are provided. A delivery system facilitates hydration of an intraluminal medical device disposed within a device chamber of the delivery system.
Abstract:
A stent deployment device (110) is provided for deploying a stent in a lumen of a patient. The device can include a catheter (112), a first balloon (122) positioned near a distal end of the catheter and a second balloon (123) adjacent to the first balloon. Alternatively, the second balloon can be positioned over the first balloon. The device also includes an expandable stent (210) positioned over the first balloon and the second balloon. The first balloon comprises a semi-compliant material, a noncompliant material or a compliant material. Similarly, the second balloon comprises a semi-compliant material, a noncompliant material or a compliant material. The first balloon is expandable to a first diameter, while the second balloon can be expandable to a second diameter.
Abstract:
A balloon catheter device (1700) includes an elongate catheter shaft comprising multifilar cable tubing (1706) having a proximal portion and a distal portion. The proximal portion includes a coating (1708) that allows the shaft to provide a patent fluid passage. The distal cable tube end includes a connection structure (1723) configured to provide desirable strength, pushability, and trackability.
Abstract:
A swaged braided catheter (30) for use in various medical procedures is provided. The swaged braided catheter includes a tubular braid (32) formed from a plurality of braided wire members (38). A plurality of intersections (40) is formed by the braided wire members. The intersections are compressed defining a plurality of flattened regions along the tubular braid. The intersections have a first thickness (dl) before being compressed and a reduced second thickness (t2) after being compressed. The flattened regions with the reduced second thickness provide the swaged braided catheter with a reduced cross-sectional profile, and reduced catheter recoil.
Abstract:
An endoluminal prosthesis system for a branched body lumen comprises a branch vessel prosthesis (11 ). The branch vessel prosthesis (11 ) is deployable within a branch vessel body lumen and comprises a stent (48) having a generally tubular body portion (33), a flareable proximal end portion (36), and a coupling portion (38) disposed intermediate the body portion and the flareable portion. The coupling portion is preferably more crush-resistant than the body portion.