MEDICAL DEVICE WITH MAGNETIC RESONANCE VISIBILITY ENHANCING STRUCTURE
First Claim
Patent Images
1. A stent comprising:
- a generally tubular structure having a plurality of electrically conductive structural members; and
a coating of insulating material applied to at least one of the plurality of electrically conductive members such that the at least one of the plurality of electrically conductive members is spaced apart from at least one other of the plurality of electrically conductive members by the coating.
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Accused Products
Abstract
A medical device that inhibits distortion of medical resonance images taken of the device. In particular, various structures are utilized to allow visibility proximate, and inside of, a tubular member, such as a stent. In one embodiment, the stent does not contain electrically conductive loops. In an alternative embodiment, rings in the stent are arranged such that current in one ring portion is opposed by current in another ring portion.
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Citations
52 Claims
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1. A stent comprising:
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a generally tubular structure having a plurality of electrically conductive structural members; and
a coating of insulating material applied to at least one of the plurality of electrically conductive members such that the at least one of the plurality of electrically conductive members is spaced apart from at least one other of the plurality of electrically conductive members by the coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A stent having an outer periphery adapted to engage a lumen, a ring comprising:
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a first ring portion disposed about the outer periphery and including a first end spaced apart from a second end;
a second ring portion disposed about the outer periphery and including a first end spaced apart from a second end;
a first connector connecting the first end of the first ring portion to the first end of the second ring portion; and
a second connector connecting the second end of the first ring portion to the second end of the second ring portion, wherein the first connector and the second connector define a gap about the outer periphery. - View Dependent Claims (16, 17, 18)
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19. A stent comprising:
a generally tubular structure having a plurality of electrically conductive structural members formed such that magnetic field changes in a region immediately proximate the generally tubular structure, induced by a magnetic resonance imaging process, are substantially unobstructed by the generally tubular structure. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A stent comprising:
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a ring curved to have a plurality of peaks and troughs and disposed about a central axis to form a generally tubular structure, wherein the ring forms a plurality of rows of structural material spaced apart from each other in a direction generally parallel to the central axis; and
a plurality of connectors, comprised of insulating material, connecting the rows of the structural material. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48)
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49. A stent comprising:
a generally tubular structure having a plurality of structural members extending axially from a first end of the tubular structure to a second end of the tubular structure, wherein at least one of the plurality of structural members comprises an electrically conductive material and at least one of the plurality of structural members comprises an insulating material. - View Dependent Claims (50, 51, 52)
Specification