Abstract: A vascular stent having one or more channels in the outer surface. The channel(s) provide increased flexibility, enhanced perfusion, increased chronic positional stability, and convenient dispensing of a medication. Preferably the stent is machined into a mesh-like pattern and the channel(s) are machined into the stent elements of the pattern. The channels may be oriented in a variety of ways. Parallel orientation tends to provide greater enhancement of perfusion whereas perpendicular orientation provides differential flexibility. For greater control of differential flexibility, the channel may be further machined in the stent element, producing a regain of greater flexibility.

Abstract: A vascular stent having one or more channels in the outer surface. The channel(s) provide increased flexibility, enhanced perfusion, increased chronic positional stability, and convenient dispensing of a medication. Preferably the stent is machined into a mesh-like pattern and the channel(s) are machined into the stent elements of the pattern. The channels may be oriented in a variety of ways. Parallel orientation tends to provide greater enhancement of perfusion whereas perpendicular orientation provides differential flexibility. For greater control of differential flexibility, the channel may be further machined in the stent element, producing a regain of greater flexibility.

Abstract: In a process of electroplating a metal work piece with thin dense chromium, the steps of submerging the metal work piece in a 35% sulfuric acid solution having about 4 ounces per gallon HF as ammonium biflouride salts, and subsequently submerging the metal work piece in a thin dense chromium plating bath having an initial direct current of about 3 volts, the amperages being at about 1.5-2.5 amps per square inch of cathode area, is provided.

Abstract: A movable joint has a first portion and a second portion and at least a deposition of chromium material forming an interface between the first and second portions. The first portion has an outer surface. The second portion also has an outer surface. The deposition of chromium material forms an interface between the outer surface of the first portion and the outer surface of the second portion.