Medical Devices for Magnetic Resonance Imaging and Related Methods

A medical device useful in interventional procedures performed under magnetic resonance imaging, said medical device comprising:

• an outer sheath member;
• an elongate member slidably disposed within the outer sheath member;
• and
• a tubular marker attached to one of the outer sheath member and the elongate member, the marker having a mass of between about 0.1 mg and about 1.37 mg and comprising work-hardened stainless steel having an ultimate tensile strength of between about 100 KSI and about 225 KSI.

A medical device useful in interventional procedures performed under magnetic resonance imaging, said medical device comprising:

• an outer sheath member;
• an elongate member slidably disposed within the outer sheath member;
• a first marker attached to the outer sheath member, the first marker comprising work-hardened stainless steel having an ultimate tensile strength of between about 100 KSI and about 225 KSI and defining a first marker lumen;
• and
• a second marker attached to the elongate member, the second marker comprising work-hardened stainless steel having an ultimate tensile strength of between about 100 KSI and about 225 KSI.