| http://www.w3.org/ns/prov#value | - ve embodiment, sleeve 21 may be made of a soft, compressible material, such as silicone, so that a stent mounted thereover becomes partially embedded therein and cannot easily slide proximally relative thereto during deployment. [0055] Referring back to FIGS. 2 and 3, system 11 additionally comprises a self-expandable stent 31 (shown separately in FIG. 5).
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