ELECTROMAGNETIC RESONANT CIRCUIT SLEEVE FOR IMPLANTABLE MEDICAL DEVICE
A medical device enables effective magnetic resonance imaging inside a lumen of a medical device. The medical device includes a plurality of conductive traces formed on a substrate. The conductive traces form an inductive-capacitance circuit or a resistive-inductive-capacitance circuit. The inductive-capacitance circuit or resistive-inductive-capacitance circuit is tuned to a frequency associated with magnetic resonance imaging, an operating frequency associated with a magnetic resonance imaging scanner, a harmonic of an operating frequency associated with a magnetic resonance imaging scanner, or a sub-harmonic of an operating frequency associated with a magnetic resonance imaging scanner.
1 . A device for enabling effective magnetic resonance imaging inside a lumen of a medical device, comprising:
a substantially cylindrical substrate;
a first plurality of conductive traces formed on said substantially cylindrical substrate; and
a second plurality of conductive traces formed on said substantially cylindrical substrate;
said first plurality of conductive traces forming a first plurality of loops to create a first spiraling inductive coil having two overlapping ends with a non-conductive material therebetween, adjacent loops of said first spiraling coil having a non-conductive material therebetween, the two overlapping ends with a non-conductive material therebetween and adjacent loops of said first spiraling coil having a non-conductive material therebetween forming a first capacitor;
said second plurality of conductive traces forming a second plurality of loops to create a second spiraling inductive coil having two overlapping ends with a non-conductive material therebetween, adjacent loops of said second spiraling coil having a non-conductive material therebetween, the two overlapping ends with a non-conductive material therebetween and adjacent loops of said second spiraling coil having a non-conductive material therebetween forming a second capacitor;
said first spiraling inductive coil and said second spiraling inductive coil being approximately orthogonally oriented on said substantially cylindrical substrate;
said first spiraling inductive coil and said first capacitor being tuned to a first frequency associated with magnetic resonance imaging;
said second spiraling inductive coil and said second capacitor being tuned to a first frequency associated with magnetic resonance imaging.
2 . The device as claimed in claim 1 , wherein said first spiraling inductive coil and said first capacitor are tuned to an operating frequency associated with a magnetic resonance imaging scanner.
3 . The device as claimed in claim 1 , wherein said first spiraling inductive coil and said first capacitor are tuned to a harmonic of an operating frequency associated with a magnetic resonance imaging scanner.
4 . The device as claimed in claim 1 , wherein said first spiraling inductive coil and said first capacitor are tuned to a sub-harmonic of an operating frequency associated with a magnetic resonance imaging scanner.
5 . The device as claimed in claim 1 , wherein said substrate is biodegradable.
6 . The device as claimed in claim 1 , wherein said substrate is thermally degradable.
7 . The device as claimed in claim 1 , wherein said substrate is chemically degradable.
8 . The device as claimed in claim 1 , wherein said substrate is optically degradable.
9 . The device as claimed in claim 1 , wherein said substrate is degradable.
10 . The device as claimed in claim 1 , wherein said conductive traces are expandable.
11 . The device as claimed in claim 1 , wherein said conductive traces are expandable without damage thereto.
12 . The device as claimed in claim 1 , wherein said conductive traces form a pattern.
13 . The device as claimed in claim 12 , wherein said pattern of conductive traces is expandable.
14 . The device as claimed in claim 12 , wherein said pattern of conductive traces is expandable without damage thereto.
15 . The device as claimed in claim 1 , wherein each loop of said spiraling coils has a distinct area.
16 . The device as claimed in claim 1 , wherein each loop of said spiraling coils has a distinct shape.
17 . The device as claimed in claim 1 , wherein each loop of said spiraling coils has a distinct area and a distinct shape.