摘要:
A delivery device (10) for an implantable medical device (34, 36) includes an inner shaft (20) with a device-carrying region (28), an outer shaft (40) surrounding the inner shaft, a sheath (41) at a distal end of the outer shaft, and a sleeve (50). The outer shaft is movable relative to the inner shaft from an advanced position in which the sheath surrounds the device-carrying region to a retracted position in which the sheath exposes the device-carrying region. The sheath includes a proximal structure (44) having a cylindrical portion (44b) between first and second transition zones (44a, 44c). The sleeve surrounds the outer shaft and is movable relative to the outer shaft from an advanced position in which a distal end portion of the sleeve surrounds the cylindrical portion to a retracted position in which the distal end portion of the sleeve is spaced proximally from the cylindrical portion.
摘要:
The presently disclosed subject matter is directed to a multi-spiral, self-expanding stent. The disclosed stent is constructed from superposed individual spiral strands. Each spiral strand comprises a terminal bend that separates the strand into a first portion and a second portion. Particularly, the first portion of each strand bends in a first spiral direction to the terminal bend, and the second portion bends in the opposite direction after the terminal bend. Advantageously, the disclosed stent is able to change its shape, diameter, and length to accommodate the corresponding shape, diameter, and length of patient's diseased vessel.
摘要:
A delivery device can include several different features including, at least: a shuttle and trigger retraction of an outer sheath; an interlock device to prevent actuation of the trigger; a retraction override switch and lock; and an inner shaft adjuster to ensure correct alignment of the inner shaft and the outer sheath prior to device deployment. The inner shaft adjuster may include, at least: a proximal portion of the handle housing having slots therethrough: pins operatively fixed to the inner shaft and extending through and slidable within the slots: and a cap having an inner helical groove that mates with the pins. Rotation of the cap may push the pins and the inner shaft in a proximal-distal direction. The cap may have a distal lip configured to accept a proximal extension of the interlock and retain it in a locked position until the inner shaft has been adjusted or moved.
摘要:
An implantable biocompatible expander (1) suitable for implantation into a urinary duct, comprises an elongated sinusoidal ring comprising at least two proximal prongs (7) and at least two distal prongs (5), wherein the expander is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander is configured to exert an outward radial force against a wall of the urinary duct when /n-s/fx/within the urinary duct. In particular, the expander is suitable for treatment of benign prostatic hyperplasia and configured for implantation into the prostatic urethra between, and substantially spanning the prostatic urethra between, the bladder neck and external sphincter.
摘要翻译:一种适于植入尿道的植入式生物相容性扩张器(1),包括细长的正弦环,所述细长的正弦环包括至少两个近侧尖头(7)和至少两个远侧尖头(5),其中所述扩张器可从松弛的径向扩张 定向到适于通过泌尿管经腔递送的径向收缩定向。 扩张器构造成在泌尿管内的/ n-s / fx /时对泌尿管的壁施加向外的径向力。 特别地,扩张器适用于治疗良性前列腺增生并且被配置为植入前列腺尿道之间,并且基本上跨越膀胱颈和外括约肌之间的前列腺尿道。
摘要:
A delivery system for transcatheter implantation of a heart valve prosthesis. The delivery system includes an outer sheath component (106) defining a lumen therethrough, an elongate tube (136) having at least two flat wires (146) longitudinally extending from a distal end thereof, and self-expanding first and second frames (102, 104) disposed in series within a distal portion of the outer sheath component and held in a compressed delivery configuration therein. The elongate tube and the at least two flat wires are slidably disposed within the lumen of the outer sheath component. In the compressed delivery configuration the at least two flat wires longitudinally extend along exterior portions of the first and second frames and are woven through adjacent ends of the first and second frames to releasably couple them to each other. Proximal retraction of the at least two flat wires from the first and second frames releases at least the first frame from the delivery system.
摘要:
An implantable biocompatible expander suitable for implantation into a urinary duct, comprises an elongated sinusoidal ring comprising at least two proximal prongs and at least two distal prongs, wherein the expander is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander is configured to exert an outward radial force against a wall of the urinary duct when in-situ within the urinary duct. In particular, the expander is suitable for treatment of benign prostatic hyperplasia and configured for implantation into the prostatic urethra between, and substantially spanning the prostatic urethra between, the bladder neck and external sphincter.
摘要:
Endovascular treatment of, for example, delayed cerebral vasospasm involves the placing of a microcatheter in the affected vessels followed by the teachings of the instant disclosure, which is clinically improved with comparison to stow infusion of a vasodilating compound. Systems, processes and self-expanding designed stents and stent-like members are featured whereas as stents and stent-like members are retrieved, nothing is left in the vessel.