| http://www.w3.org/ns/prov#value | - For example, catheter 10 may become increasingly flexible in a distal direction by having distal segment 34 comprise a material that is softer than the material of proximal segment 32, and by having soft tip 18 comprise a material that is softer than the material of distal segment 34. [0017] Hollow core 20 and/or outer jacket 30 may comprise polymeric materials such as polyolefins, thermoplastic p
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