| http://www.w3.org/ns/prov#value | - The groove may be defined by forming an indentation in the tube or tubes or cylinder of material that is used to form the main body of catheter 12, may be formed by adding additional spacers, rings or other structures over the outer circumference of the core 18, may be formed by attaching a specially formed tip having an integral groove portion, or may be formed using other suitable approaches or
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