摘要:
A medical device for blood flow restoration and/or for use as an implantable member in a human vessel includes a self-expanding member, a guidewire, and a connection mechanism. The self-expanding member includes a plurality of cells and filaments having specific ranges of thicknesses, widths, and heights. The self-expanding member can take on a volume-reduced coiled form with overlapped edges, and can generate optimal radial forces against a vessel wall and/or thrombus when deployed and expanded.
摘要:
An implantable lumen filter is described. The filter may include a body formed from an elongate member. The body may include loops encircling an axis extending along the length of the body. The body may be sized to be implanted into a body lumen. The body may be capable of transitioning from a collapsed state to a deployed state. The filter may include a first group of a plurality of members positioned around at least one loop of said body. At least a portion of the plurality of members may be oriented towards the axis. The plurality of members may be arranged to capture and/or lyse particulates of a selected size and/or to inhibit the particulates from passing through the body. Methods of making, deploying, and retrieving the same are described.
摘要:
Methods are provided for descaling metallic components devices such as stents. The devices or components are cleaned under ultrasound in a cleaning solution of ammonium hydrogen fluoride at a temperature within a range of about 60° to 80° C., then rinsed at that temperature with an aqueous rinse containing a nonionic surfactant and rinsed again with purified water.
摘要:
A method for imaging an implantable device is described. The method may include positioning an implantable device within a patient. Ultrasonic energy may be transmitted toward the implantable device. The returning ultrasonic energy may be analyzed to determine a first characteristic of the implantable device. A method for manufacturing an implantable device is also described. The method may include selecting a first size dimension for a plurality of ultrasonically visible portions. The method may further include selecting a first spacing dimension for the plurality of ultrasonically visible portions. An implantable device may be formed. The plurality of ultrasonically visible portions may be formed into the first outer surface. An implantable device is also described. The implantable device may include a first outer surface. The first outer surface may include a first ultrasonically visible portion having a first size dimension.
摘要:
A modular endoprosthesis is configured to have improved flexibility during and after deployment by having separate endoprosthetic modules that are interconnected by flexible interconnectors. The modular endoprosthesis includes a plurality of separate endoprosthetic modules positioned adjacently so that a first end of a first endoprosthetic module is adjacent to an end of a second endoprosthetic module and a second end of the first endoprosthetic module is adjacent to an end of a third endoprosthetic module. Additionally, the modular endoprosthesis includes a plurality of flexible interconnectors coupled to the plurality of separate endoprosthetic modules so as to interconnect the first end of the first endoprosthetic module with the end of the second endoprosthetic module with a first flexible interconnector, and interconnect the second end of the first endoprosthetic module with the end of the third endoprosthetic module with a second flexible interconnector.
摘要:
An apparatus and method are provided for simultaneously electropolishing a plurality of metallic stents. A plurality of elongated members on the apparatus are movably engaged with a plate such that movement of the plate relative to the elongated members causes each of the elongated members to rotate on its respective longitudinal axis when immersed in an electrolytic solution. A continuous cathode is located in close proximity to each of the elongated members when they are immersed in the electrolytic solution.
摘要:
An intraluminal apparatus including a catheter and device is positionable at a junction of afferent and efferent vessels of a bifurcation having an aneurysm. After positioning the device to substantially conform the device to the shape of the junction, the device acts as a scaffolding to inhibit herniation of objects out of the aneurysm and the device permits perfusion to the efferent vessels. Positioning the device may include deployment and optional release from a catheter. Embolic material may be inserted in the aneurysm before or after positioning the device. The device may have a proximal end, a distal end, and a plurality of filaments extending between and coupled at the proximal end and the distal end. The device may include a central filament configured to reshape the device. The distal end of the device may include a covering. The device may be football shaped, pumpkin shaped, or acorn shaped.
摘要:
An implantable lumen filter (100) is described. The implantable lumen filter includes a proximal portion (103a) having a generally-tapered outer surface defined by a plurality of outer struts (106).The implantable lumen filter may also include a distal portion (103b) having a generally-tapered outer surface defined by a plurality of outer struts (106b) coupled together at the distal end (102b) of the distal portion. The implantable lumen filter may also include an apex (105) comprising the connection between the proximal and distal portions. The apex may define an outer dimension of the implantable lumen filter. The outer surface of the proximal portion is dimensioned to direct particulates towards the outer dimension.