US2007198073A1PendingUtilityA1

Medical device with a mri-induced signal attenuating member

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Assignee: BIOPHAN TECHNOLOGIES INCPriority: Feb 20, 2001Filed: Nov 30, 2006Published: Aug 23, 2007
Est. expiryFeb 20, 2021(expired)· nominal 20-yr term from priority
Inventors:Stuart MacdonaldPatrick R. Connelly
A61N 1/37512A61N 1/37518H01R 2201/12H01R 13/5224H01R 13/6598A61N 1/056A61N 1/3718A61N 1/086H01R 13/6464H01R 13/719A61N 1/16
52
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Claims

Abstract

A lead includes a conductor having a distal end and a proximal end. The lead also includes a filter circuit in the conductor. The filter circuit filters out magnetic resonance imaging induced signals.

Claims

exact text as granted — not AI-modified
1 . A lead, comprising: 
 a conductor having a distal end and a proximal end; and    a filter circuit in said conductor;    said filter circuit filtering out magnetic resonance imaging induced signals.    
     
     
         2 . The lead as claimed in  claim 1 , wherein said filter circuit is located at said distal end of said conductor.  
     
     
         3 . The lead as claimed in  claim 1 , wherein said filter circuit is located at said proximal end of said conductor.  
     
     
         4 . The lead as claimed in  claim 1 , wherein said filter circuit is an inductor and a capacitor.  
     
     
         5 . The lead as claimed in  claim 4 , wherein said inductor and capacitor are connected in parallel.  
     
     
         6 . The lead as claimed in  claim 1 , wherein said filter circuit is a tank circuit.  
     
     
         7 . The lead as claimed in  claim 1 , wherein the conductor is a conductor in a bipolar pacing lead circuit.  
     
     
         8 . The lead as claimed in  claim 1 , wherein the conductor is a conductor in a unipolar pacing lead circuit.  
     
     
         9 . The lead as claimed in  claim 1 , wherein the conductor is a conductor in a cardiac defibrillator lead, a deep brain stimulating lead, or a conductor in a nerve stimulating lead.  
     
     
         10 . A lead, comprising: 
 a plurality of conductors, each conductor having a distal end and a proximal end; and    a plurality of filter circuits, each filter circuit being in a conductor, each filter circuit filtering out magnetic resonance imaging induced signals.    
     
     
         11 . The lead as claimed in  claim 10 , wherein each filter circuit is located at said distal end of said conductor.  
     
     
         12 . The lead as claimed in  claim 10 , wherein each filter circuit is located at said proximal end of said conductor.  
     
     
         13 . The lead as claimed in  claim 10 , wherein each filter circuit is an inductor/capacitor pair.  
     
     
         14 . The lead as claimed in  claim 13 , wherein each inductor/capacitor pair is an inductor connected in parallel with a capacitor.  
     
     
         15 . The lead as claimed in  claim 10 , wherein each filter circuit is a tank circuit.  
     
     
         16 . The lead as claimed in  claim 10 , wherein said conductors are conductors in a cardiac defibrillator lead, a deep brain stimulating lead, or a conductor in a nerve stimulating lead.  
     
     
         17 . A lead, comprising: 
 a conductor having a distal end and a proximal end;    an electrode connected to said distal end of said conductor; and    a filter circuit in said conductor;    said filter circuit being connected in series between said conductor and said electrode;    said filter circuit filtering out magnetic resonance imaging induced signals.    
     
     
         18 . The lead as claimed in  claim 17 , wherein said filter circuit is an inductor and a capacitor.  
     
     
         19 . The lead as claimed in  claim 18 , wherein said inductor and capacitor are connected in parallel.  
     
     
         20 . The lead as claimed in  claim 17 , wherein said filter circuit is a tank circuit.  
     
     
         21 . The lead as claimed in  claim 17 , wherein the conductor is a conductor in a bipolar pacing lead circuit.  
     
     
         22 . The lead as claimed in  claim 17 , wherein the conductor is a conductor in a unipolar pacing lead circuit.  
     
     
         23 . The lead as claimed in  claim 17 , wherein the conductor is a conductor in a cardiac defibrillator lead, a deep brain stimulating lead, or a conductor in a nerve stimulating lead.  
     
     
         24 . A lead, comprising: 
 a conductor having a distal end and a proximal end; and    a filter circuit in said conductor;    said filter circuit attenuating magnetic resonance imaging induced signals.    
     
     
         25 . The lead as claimed in  claim 24 , wherein said filter circuit is located at said distal end of said conductor.  
     
     
         26 . The lead as claimed in  claim 24 , wherein said filter circuit is located at said proximal end of said conductor.  
     
     
         27 . The lead as claimed in  claim 24 , wherein said filter circuit is an inductor and a capacitor.  
     
     
         28 . The lead as claimed in  claim 27 , wherein said inductor and capacitor are connected in parallel.  
     
     
         29 . The lead as claimed in  claim 24 , wherein said filter circuit is a tank circuit.  
     
     
         30 . The lead as claimed in  claim 24 , wherein the conductor is a conductor in a bipolar pacing lead circuit.  
     
     
         31 . The lead as claimed in  claim 24 , wherein the conductor is a conductor in a unipolar pacing lead circuit.  
     
     
         32 . The lead as claimed in  claim 24 , wherein the conductor is a conductor in a cardiac defibrillator lead, a deep brain stimulating lead, or a conductor in a nerve stimulating lead.  
     
     
         33 . A lead, comprising: 
 a plurality of conductors, each conductor having a distal end and a proximal end; and    a plurality of filter circuits, each filter circuit being in a conductor, each filter circuit attenuating magnetic resonance imaging induced signals.    
     
     
         34 . The lead as claimed in  claim 33 , wherein each filter circuit is located at said distal end of said conductor.  
     
     
         35 . The lead as claimed in  claim 33 , wherein each filter circuit is located at said proximal end of said conductor.  
     
     
         36 . The lead as claimed in  claim 33 , wherein each filter circuit is an inductor/capacitor pair.  
     
     
         37 . The lead as claimed in  claim 36 , wherein each inductor/capacitor pair is an inductor connected in parallel with a capacitor.  
     
     
         38 . The lead as claimed in  claim 33 , wherein each filter circuit is a tank circuit.  
     
     
         39 . The lead as claimed in  claim 33 , wherein said conductors are conductors in a cardiac defibrillator lead, a deep brain stimulating lead, or a conductor in a nerve stimulating lead.  
     
     
         40 . A lead, comprising: 
 a conductor having a distal end and a proximal end;    an electrode connected to said distal end of said conductor; and    a filter circuit in said conductor;    said filter circuit being connected in series between said conductor and said electrode;    said filter circuit attenuating magnetic resonance imaging induced signals.    
     
     
         41 . The lead as claimed in  claim 40 , wherein said filter circuit is an inductor and a capacitor.  
     
     
         42 . The lead as claimed in  claim 41 , wherein said inductor and capacitor are connected in parallel.  
     
     
         43 . The lead as claimed in  claim 40 , wherein said filter circuit is a tank circuit.  
     
     
         44 . The lead as claimed in  claim 40 , wherein the conductor is a conductor in a bipolar pacing lead circuit.  
     
     
         45 . The lead as claimed in  claim 40 , wherein the conductor is a conductor in a unipolar pacing lead circuit.  
     
     
         46 . The lead as claimed in  claim 40 , wherein the conductor is a conductor in a cardiac defibrillator lead, a deep brain stimulating lead, or a conductor in a nerve stimulating lead.  
     
     
         47 . A lead, comprising: 
 a conductor having a distal end and a proximal end; and    a filter circuit in said conductor;    said filter circuit limiting magnetic resonance imaging induced signals.    
     
     
         48 . The lead as claimed in  claim 4 , wherein said filter circuit is located at said distal end of said conductor.  
     
     
         49 . The lead as claimed in  claim 47 , wherein said filter circuit is located at said proximal end of said conductor.  
     
     
         50 . The lead as claimed in  claim 47 , wherein said filter circuit is an inductor and a capacitor.  
     
     
         51 . The lead as claimed in  claim 50 , wherein said inductor and capacitor are connected in parallel.  
     
     
         52 . The lead as claimed in  claim 47 , wherein said filter circuit is a tank circuit.  
     
     
         53 . The lead as claimed in  claim 47 , wherein the conductor is a conductor in a bipolar pacing lead circuit.  
     
     
         54 . The lead as claimed in  claim 47 , wherein the conductor is a conductor in a unipolar pacing lead circuit.  
     
     
         55 . The lead as claimed in  claim 47 , wherein the conductor is a conductor in a cardiac defibrillator lead, a deep brain stimulating lead, or a conductor in a nerve stimulating lead.  
     
     
         56 . A lead, comprising: 
 a plurality of conductors, each conductor having a distal end and a proximal end; and    a plurality of filter circuits, each filter circuit being in a conductor, each filter circuit limiting magnetic resonance imaging induced signals.    
     
     
         57 . The lead as claimed in  claim 56 , wherein each filter circuit is located at said distal end of said conductor.  
     
     
         58 . The lead as claimed in  claim 56 , wherein each filter circuit is located at said proximal end of said conductor.  
     
     
         59 . The lead as claimed in  claim 56 , wherein each filter circuit is an inductor/capacitor pair.  
     
     
         60 . The lead as claimed in  claim 59 , wherein each inductor/capacitor pair is an inductor connected in parallel with a capacitor.  
     
     
         61 . The lead as claimed in  claim 56 , wherein each filter circuit is a tank circuit.  
     
     
         62 . The lead as claimed in  claim 56 , wherein said conductors are conductors in a cardiac defibrillator lead, a deep brain stimulating lead, or a conductor in a nerve stimulating lead.  
     
     
         63 . A lead, comprising: 
 a conductor having a distal end and a proximal end;    an electrode connected to said distal end of said conductor; and    a filter circuit in said conductor;    said filter circuit being connected in series between said conductor and said electrode;    said filter circuit limiting magnetic resonance imaging induced signals.    
     
     
         64 . The lead as claimed in  claim 63 , wherein said filter circuit is an inductor and a capacitor.  
     
     
         65 . The lead as claimed in  claim 64 , wherein said inductor and capacitor are connected in parallel.  
     
     
         66 . The lead as claimed in  claim 63 , wherein said filter circuit is a tank circuit.  
     
     
         67 . The lead as claimed in  claim 63 , wherein the conductor is a conductor in a bipolar pacing lead circuit.  
     
     
         68 . The lead as claimed in  claim 63 , wherein the conductor is a conductor in a unipolar pacing lead circuit.  
     
     
         69 . The lead as claimed in  claim 63 , wherein the conductor is a conductor in a cardiac defibrillator lead, a deep brain stimulating lead, or a conductor in a nerve stimulating lead.

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