Stent designs which enable the visibility of the inside of the stent during MRI
First Claim
Patent Images
1. A medical device for use within a body cavity, the medical device having a visualization region in which visualization using magnetic resonance imaging (MRI) is desired, the medical device comprising:
- structural material defining a primary structure having a wall with openings therein and a periphery, the structural material being configured such that any closed path, in the visualization region, extending about at least one of the periphery or an opening in the wall, passes through at least two materials.
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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 is constructed such that any closed path encircling at least a circumference of the stent will pass through at least two materials to reduce or eliminate electrical loops formed in the stent.
169 Citations
41 Claims
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1. A medical device for use within a body cavity, the medical device having a visualization region in which visualization using magnetic resonance imaging (MRI) is desired, the medical device comprising:
structural material defining a primary structure having a wall with openings therein and a periphery, the structural material being configured such that any closed path, in the visualization region, extending about at least one of the periphery or an opening in the wall, passes through at least two materials. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A medical device for use within a body cavity, comprising:
a primary structure formed of a plurality of substructures, the substructures forming a wall of the primary structure and defining openings in the wall, the primary structure having a visualization region in which magnetic resonance imaging (MRI) visualization of the body cavity adjacent the visualization region is desired, the substructures in the visualization region being formed with sufficiently low magnetic susceptibility material that the body cavity adjacent the visualization region can be seen using MRI. - View Dependent Claims (31, 32, 33, 34, 35)
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36. A stent for use in a body cavity, comprising:
a primary structure formed of a plurality of substructures, the substructures forming a wall of the primary structure and defining openings in the wall, the primary structure having a visualization region in which magnetic resonance imaging (MRI) visualization of the body cavity adjacent the visualization region is desired, the substructures in the visualization region being formed with sufficiently low magnetic susceptibility material that the body cavity adjacent the visualization region can be seen using MRI. - View Dependent Claims (37, 38, 39, 40, 41)
Specification