| http://www.w3.org/ns/prov#value | - The pattern will typically correspond to the opening pattern of a particular stent but may also be in the form of one or more, regularly or irregularly shaped and/or positioned: hubs, knobs, engagement members, troughs, valleys, channels or other physical elements suitable for providing the catheter with a textured surface 16 such as is shown in FIGS. 1 and 2.
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