摘要:
An implantable medical device includes, according to one embodiment, at least one radiopaque and MRI-compatible component comprising an oxide dispersion strengthened metal alloy, where the oxide dispersion strengthened metal alloy has a volume magnetic susceptibility of no greater than about 100×10−6 and a radiopacity greater than that of grade 304 stainless steel.
摘要:
An apparatus and method for splitting or otherwise separating and routing optical fibers are provided in which a splitter housing having first and second separable halves is mounted upon a plurality of optical fibers without having to cut all of the optical fibers. The splitter housing generally includes an inline portion and a branch portion. The inline portion defines an input port at one end for receiving a plurality of optical fibers and a primary output port at the opposed end through which at least one optical fiber exits. The branch portion extends outwardly from the inline portion at one end and defines a secondary output port at the opposed end. The branch portion is in communication with the inline portion such that at least one optical fiber that enters through the input port can be separated from the remainder of the optical fibers and routed through the branch portion.
摘要:
An apparatus is provided for strain relieving a communications cable having a non-cylindrical cross section and for optimally positioning a plurality of the cables. The apparatus includes at least two plates oriented adjacent one another. Each of the plates has at least one mounting surface and at least one strain relief surface. The strain relief surface may be angled relative to the mounting surface. At least one fastener draws the plates together to grip the cable between the strain relief surfaces. The apparatus may further include a plurality of laterally extending teeth depending from the strain relief surface of at least one of the plates. The teeth increase the gripping force applied to the cable. The cable may have an electrically conductive inner sheath that is pierced by the teeth on the strain relief surface and the apparatus may be further provided with a ground strap for grounding the cable.
摘要:
A system for endoluminally delivering and deploying a prosthesis includes a prosthesis comprising a self-expanding stent and a cover for retaining at least a portion of the self-expanding stent. The stent is biased into contact with an inner surface of the cover. The inner surface has a hardness that is equal to or greater than the hardness of the stent. Additional aspects of the invention are disclosed and include a method of manufacturing an endoluminal prosthesis delivery and deployment system.
摘要:
An intravascular stent is formed by utilizing the process of metal injection molding (MIM) applied to metal powder, ceramic powder and ceramic metal composite powder. The devices may have longitudinal/circumferential channels and/or depots molded into the tubing thereof to enable such devices to act as a functional drug delivery vehicle having adequate drug reservoir capability.
摘要:
The disclosure relates to a woven fabric for use in an implantable medical device. The woven fabric comprises shape memory element strands woven with textile strands. At least one of the shape memory element strands has at least one float of at least five textile strands between binding points.
摘要:
A method of loading a medical device into a delivery system includes providing a two-stage shape memory alloy at a temperature at which at least a portion of the alloy includes austenite. A stress which is sufficient to form R-phase from at least a portion of the austenite is applied to the medical device at the temperature. A delivery configuration of the medical device is obtained, and the medical device is loaded into a restraining member. Preferably, the delivery configuration of the medical device includes stress-induced R-phase.
摘要:
The present invention provides a wire guide (20) suitable for use in a body vessel, such as a peripheral vessel. The wire guide comprises a core member (22) and a first coiled member (40), each having proximal and distal ends. In one embodiment, the core member comprises at least one recessed portion (36), wherein the proximal end of the first coiled member is seated at least partially within the recessed portion to form a substantially flush exterior surface with the core member. The wire guide further preferably comprises a second coiled member (50) having proximal and distal ends, wherein the second coiled member is disposed distal to the first coiled member. The distal end of the first coiled member may be partially intertwined with the proximal end of. the second coiled member. A shaping ribbon (60) may be disposed substantially beneath the second coiled member to achieve a desired curvature at the distal tip of the wire guide.
摘要:
An occluding device designed for occlusion of fluid flow through a body cavity. The device comprises a coil and fibers attached to the coil. The coil has a proximal and distal portion, with variable rigidity along the length of the coil. The distal portion has greater rigidity than the proximal portion. The fibers extend from the coil at a length.
摘要:
A stent including a stent wire comprising a plurality of filaments twisted into a bundle having a helix, the stent wire bent into a pattern having a plurality of substantially straight wire sections separated by a plurality of bends. The pattern of the stent wire is spirally wound about a central axis in the same direction as the helix formed by the plurality of filaments. Each of the filaments in a bend have a cylindrical cross-section where at least one of the plurality of filaments is displaced and spaced from an immediately adjacent filament in the bend.