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US 7,792,568 B2Granted
MRI-visible medical devices
AssigneeBoston Scientific Scimed, Inc.
InventorsSheng-Ping Zhong, Ronald A. Sahatjian
Life of this patent
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Abstract
A medical device includes a body, a member in the body, and a contrast agent in the member. The device can be visible by magnetic resonance imaging.
Claims37
A medical device, comprising:
- a body formed of a polymer;
- a plurality of sealed members comprising a material different from the body, the members being embedded within the body, wherein the plurality of sealed members comprise relatively small fibers having a length-to-width aspect ratio of at least 3:1;
- and
- a contrast agent encapsulated within the sealed members, wherein the contrast agent is different than the sealed members;
- wherein the contrast agent is visible by magnetic resonance imaging,
- wherein the members are incorporated into the body by mixing the plurality of sealed members with the polymer to form a mixture prior to extrusion and extruding the mixture to form the body.
3 more elements
A medical tubing, comprising:
- a hollow body formed of a polymer;
- a plurality of sealed members comprising a material different from the body, the sealed members being embedded within the body, wherein the plurality of sealed members comprise relatively small fibers having a length-to-width aspect ratio of at least 3:1;
- and
- a contrast agent encapsulated within the sealed member, wherein the contrast agent is different than the sealed members;
- wherein the contrast agent is visible by magnetic resonance imaging,
- wherein the members are incorporated into the body by mixing the members with the polymer to form a mixture prior to extrusion and extruding the mixture to form the body.
3 more elements
A method of making a medical device, the method comprising:
- extruding a body comprising a polymer, and a plurality of sealed members comprising a material different from the body and having a contrast agent encapsulated within the member, wherein the contrast agent is different than the sealed members, wherein the sealed members comprise relatively short fibers having a length-to-width aspect ratio of at least 3:1;
- wherein the sealed members are embedded within the body and the device is visible by magnetic resonance imaging.
A method of making a medical device, the method comprising:
- forming a mixture comprising a first polymer, and a plurality of sealed members comprising a material different from the first polymer and having a contrast agent that is different from the sealed members and encapsulated within the sealed members, wherein the sealed members are relatively short fibers having a length-to-width aspect ratio of at least 3:1;
- and
- forming the mixture into the medical device;
- wherein the members are embedded within the first polymer.
1 more element
Dependencies are inferred from the claim text.