Low profile, self-expanding endovascular prostheses having a Ni-Ti alloy stent structure that is particularly well-suited for accessing and traversing narrow anatomical passageways and providing physiologically acceptable radial or hoop strength and longitudinal flexibility.

The present invention provides a bio-electrode composition including a silicone bonded to a sulfonamide salt, wherein the sulfonamide salt is shown by the following general formula (1): ##STR00001##
wherein R.sup.1 represents a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms optionally having an aromatic group, an ether group, or an ester group, or an arylene group having 6 to 10 carbon atoms; Rf represents a linear, branched, or cyclic alkyl group having 1 to 4 carbon atoms and containing at least one fluorine atom; M.sup.+ is an ion selected from a lithium ion, a sodium ion, a potassium ion, and a silver ion. This can form a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, light-weight, manufacturable at low cost, and free from large lowering of the electric conductivity even though it is wetted with water or dried.

An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.

Devices used to restrict flow within a blood vessel are disclosed. Devices within the scope of this disclosure include a braided lattice of nitinol wires that form self-expanding enclosures of an embolic structure. The devices may further include embolic particles disposed within the enclosures. Methods of deploying the devices with the embolic particles are disclosed. Methods of manufacturing the devices with the embolic particles disposed within the enclosures are disclosed.

Implantable medical devices, such as embolic devices and blood flow filters are disclosed, the devices being made at least partially out of a platinum-tungsten alloy, wherein a percentage of tungsten in the alloy is equal to or greater than about 10% of the alloy by weight.

The present invention relates to a medical Pt—W alloy, containing 10 mass % or more and 15 mass % or less of W, with the balance being Pt and inevitable impurities, in which a Zr content is 1000 ppm or less. Limiting the Zr content can improve workability, particularly workability at the stage of hot working. Regarding impurity control, further limiting a Ca content to 250 ppm or less can provide more suitable workability. The present invention is good in workability in processing into a wire included in an embolic coil, a guide wire or the like.

An object of the present invention is to provide a Zr—Nb-based alloy material as a low-magnetic susceptibility alloy having a high corrosion resistance while maintaining a magnetic susceptibility equivalent to or less than the magnetic susceptibility of the biological alloy of the related art, a method for manufacturing the alloy material, and a Zr—Nb-based alloy product. The Zr—Nb-based alloy material according to the present invention includes, as a chemical composition, 3% by mass or more and 18% by mass or less of Nb, 12% by mass or less of Ti, 6% by mass or less of Cr, 6% by mass or less of Cu, 5% by mass or less of Bi, and a remainder consisting of Zr and unavoidable impurities, in which isothermal ω phase particles are dispersed and precipitated in β phase crystal grains of a parent phase.

The present technology is directed to adjustable flow glaucoma shunts and methods for making and using such devices. In many of the embodiments described herein, the shunts include a generally flat frame. The frame can include an elongated portion having a lumen extending therethrough and a bladder portion defining an interior chamber that is in fluid communication with the lumen. When implanted in a patient's eye, aqueous can drain from the anterior chamber to a target outflow location via the lumen and interior chamber. In some embodiments, the shunts include a flow control assembly positioned within the interior chamber of the bladder portion to control the flow of aqueous through the lumen.

An exemplary needle defines a lumen and includes a proximal portion and a distal portion. The proximal portion defines a first port of the lumen, the distal portion defines at least one second port of the lumen, and the lumen extends between and connects the first port and the at least one second port. The distal portion also defines a tip portion configured for insertion into patient skin. In certain embodiments, the distal portion includes a compressible region including at least one slit. In certain embodiments, the distal portion includes an opening and a ramp configured to urge patient tissue within the distal portion toward the opening during insertion of the distal portion into patient tissue. In certain embodiments, the needle is formed of nitinol.

A tattoo needle structure is provided. A tattoo needle has a plurality of needle tips, an ink holding space is formed by the arrangement of the needle tips, and a multi-component alloy film is deposited on each needle tip of the tattoo needle by sputtering technology, so that when the tattoo needle is dipped into the tattoo ink, the tattoo ink does not stick to the surface of the multi-component alloy film by the hydrophobic property of the multi-component alloy film, and the tattoo ink is contained in the ink holding space by the cohesive property of the tattoo ink. Thus, when the tattoo needle is dipped into the tattoo ink and the tattoo process is performed, the dyeing area of the skin with the tattoo ink is the cross-sectional area of the ink holding space, thereby achieving the technical effect of improving the contouring resolution of a tattoo.