MRI compatible guide wire
First Claim
Patent Images
1. An elongated intracorporeal member that is MRI compatible, comprising:
- an elongated core having an electrically non-conductive proximal core section and an essentially non-magnetic metallic distal core section;
a non-conductive connecting element securing together a distal end of the proximal core section and a proximal end of the distal core section; and
a metallic coil that is at least in part disposed about the distal core section.
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Accused Products
Abstract
An improved intracorporeal device such as a guide wire or other guiding member for use within a patient'"'"'s body that is at least in part visible under magnetic resonance imaging (MRI) but is not detrimentally affected by the imaging is disclosed. The intracorporeal device has a non-conductive proximal core section, an essentially non-magnetic metallic distal core section that is preferably more flexible than the proximal core section, and that has an MRI visible member or coil in the distal section.
93 Citations
38 Claims
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1. An elongated intracorporeal member that is MRI compatible, comprising:
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an elongated core having an electrically non-conductive proximal core section and an essentially non-magnetic metallic distal core section;
a non-conductive connecting element securing together a distal end of the proximal core section and a proximal end of the distal core section; and
a metallic coil that is at least in part disposed about the distal core section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An elongated guide wire for intraluminal delivery of therapeutic or diagnostic devices, comprising:
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an elongated core having an electrically non-conductive, non-metallic proximal core section having proximal and distal ends;
an essentially non-magnetic metallic distal core section having proximal and distal ends;
a torque transmitting junction between the distal end of the proximal core section and the proximal end of the distal core section; and
an essentially non-magnetic MRI visible coil that is at least in part secured to the distal core section. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method of performing an intracorporeal procedure within a patient, comprising:
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providing a guide wire having an elongated core with a non-conductive proximal core section, an essentially non-magnetic distal core section, and an MRI visible marker on the distal core section;
introducing the guide wire into a body lumen of the patient;
advancing the guide wire therein under MRI until the MRI visible member on the distal core section is disposed within a desirable location within the patient; and
advancing a therapeutic or diagnostic device over the guide wire until an operative portion of the device is disposed at a location in which a therapeutic or diagnostic procedure is to be performed.
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26. A method of performing an intracorporeal procedure within a patient, comprising:
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providing an elongated intracorporeal device having an elongated non-conductive proximal section, a non-magnetic distal section and an MRI visible marker on the distal section;
introducing the intracorporeal device into a patient'"'"'s body;
advancing the intracorporeal device therein under MRI until the MRI visible marker on the distal core section is disposed within a desirable location within the patient; and
performing a therapeutic or diagnostic procedure.
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27. An elongated intracorporeal member that is MRI compatible, comprising:
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an elongated core having an electrically non-conductive proximal core section, an essentially non-magnetic metallic distal core section dimensioned to exhibit negligible heating when exposed to MRI, ad a polymer material joining the distal end of the proximal core section to the proximal end of the distal core section;
a metallic coil disposed at least in part about the distal core section, the metallic coil having a low volumetric magnetic susceptibility enabling visualization when subjected to MRI. - View Dependent Claims (28, 29, 30, 31, 32)
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33. An elongated intracorporeal member comprising:
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an elongated core having at least two different metallic core sections connected by a non-conductive joint separating the two core sections, wherein the non-conductive joint connects the distal end of one metallic core section to the proximal end of the other metallic core section, and a metallic coil disposed at least in part about one of the core sections, the metallic coil having a low volumetric magnetic susceptibility enabling visualization when subjected to MRI. - View Dependent Claims (34, 35, 36, 37, 38)
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Specification