Polymeric stent suitable for imaging by MRI and fluoroscopy
First Claim
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1. A stent for implantation within a body lumen of a patient, comprising:
- a body defined by a pattern of interconnected strut;
a wherein the struts are made from polymeric material;
a radiopaque material; and
an MRI material designed to remain permanently in a body lumen;
wherein the stent is imageable both under x-ray based fluoroscopy and MRI when placed in the body lumen and wherein the radiopaque material and the MRI material is compounded into the body of the stent.
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Abstract
An endovascular implant, stent or other medical device formed from a polymeric material, compounded with one or more materials to render the stent visible under both magnetic resonance imaging and x-ray based fluoroscopy procedures. The stent is adaptable to be placed in any body lumen and is contemplated to be a permanent or a biodegradeable implant.
557 Citations
49 Claims
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1. A stent for implantation within a body lumen of a patient, comprising:
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a body defined by a pattern of interconnected strut;
a wherein the struts are made from polymeric material;
a radiopaque material; and
an MRI material designed to remain permanently in a body lumen;
wherein the stent is imageable both under x-ray based fluoroscopy and MRI when placed in the body lumen and wherein the radiopaque material and the MRI material is compounded into the body of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent for implantation within a vessel lumen of a patient, which is visible under magnetic resonance imaging and fluoroscopy, comprising:
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a pattern of struts interconnected to form a structure that contacts the lumen to maintain the patency thereof, wherein the struts are made from a polymeric material;
a material designed to remain permanently in a body lumen, compounded into the stent, to generate a magnetic susceptibility artifact of the stent; and
a material, compounded into the stent, to enhance radiopacity of the stent. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A stent for implantation within a vessel lumen of a patient, which is visible under magnetic resonance imaging and fluoroscopy, comprising:
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a plurality of cylindrical rings interconnected to form the stent, each cylindrical ring having a first delivery diameter and a second expanded diameter;
each cylindrical ring having a proximal end and a distal end and a cylindrical wall extending circumferentially between the proximal end and the distal end of the cylindrical ring;
at least one connecting link attaching each cylindrical ring to an adjacent cylindrical ring;
the cylindrical rings and connecting links being formed from a polymeric material;
a first material designed to remain permanently in a body lumen to generate a magnetic susceptibility artifact of the stent; and
a second material to enhance radiopacity of the stent;
wherein one of the first material and the second material is compounded into the stent. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A system including a medical device, the medical device comprising:
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a body including struts made from a polymeric material;
a first material;
a second material;
wherein the first material guarantees a magnetic susceptibility artifact and the second material enhances the radiopacity of the device, and wherein one of the first material and second material is compounded into the body of the medical device.
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Specification