| http://www.w3.org/ns/prov#value | - In related embodiments, introducer 12 and/or member 18 can be configured to have stiffer proximal portions and more flexible distal portions so as to facilitate one or more of the following (i) introducer steerability and positioning of distal tip 16 at a selectable target tissue site 5???, (ii) reduced risk of perforation, abrasion and other trauma during the positioning the introducer to the tis
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