| http://www.w3.org/ns/prov#value | - sent invention. [0022]FIG. 2 is a cross-sectional side view of the apparatus of FIG. 1, showing an inner tubular body extending distally relative to an outer tubular body. [0023]FIG. 3 is a cross-sectional side view of a variation of the apparatus of FIG. 1, showing the apparatus including an electrode carried at its distal end. [0024]FIG. 4 is a cross-sectional detail of a variation of the appara
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