Intravascular temperature sensor
First Claim
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1. A catheter for mapping vulnerable plaque deposits within a blood vessel, comprising;
- an elongate shaft having a proximal end and a distal end;
at least one cowl fixed to the elongate shaft proximate the distal end thereof;
the at least one cowl defining an inlet port, an outlet port, and a fluid flow channel extending therebetween; and
at least one temperature sensor disposed within the flow channel defined by the at least one cowl.
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Abstract
Devices and methods for detecting vulnerable plaque within a blood vessel are disclosed. A catheter in accordance with the present invention includes an elongate shaft having a proximal end, a distal end, and an outer surface. At least one temperature sensor is disposed proximate to the distal end of the elongate shaft. In one preferred embodiment, the at least one temperature sensor is adapted to contact an inner surface of the blood vessel. In another preferred embodiment, at least one temperature sensor is disposed within a channel defined by a body member that is disposed about the elongate shaft.
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Citations
33 Claims
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1. A catheter for mapping vulnerable plaque deposits within a blood vessel, comprising;
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an elongate shaft having a proximal end and a distal end;
at least one cowl fixed to the elongate shaft proximate the distal end thereof;
the at least one cowl defining an inlet port, an outlet port, and a fluid flow channel extending therebetween; and
at least one temperature sensor disposed within the flow channel defined by the at least one cowl. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
the at least one cowl is configured such that the temperature of the blood passing through the flow channel is reflective of the temperature of an inner surface of the blood vessel proximate the distal end;
of the catheter.
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4. The catheter of claim 1, wherein the temperature sensor comprises a resistance temperature device.
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5. The catheter of claim 1, wherein the temperature sensor comprises a thermocouple.
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6. The catheter of claim 1, wherein the temperature sensor comprises a thermistor.
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7. The catheter of claim 1, wherein the temperature sensor comprises a microbolometer.
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8. The catheter of claim 1, further comprising an interstitial member disposed between the at least one cowl and the elongate shaft.
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9. The catheter of claim 1, further comprising a balloon disposed between the at least one cowl and the elongate shaft.
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10. The catheter of claim 9, wherein the balloon has an inflated state and a deflated state.
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11. The catheter of claim 10, wherein the balloon is configured such that flow of blood around the at least one cowl is precluded when the balloon is in the inflated state.
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12. The catheter of claim 10, wherein the balloon is configured such that the at least one cowl is urged radially away from the elongate shaft when the balloon is in the inflated state.
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13. The catheter of claim 1, further comprising a plurality of cowls radially disposed about the elongate shaft.
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14. A catheter for mapping vulnerable plaque deposits within a blood vessel, comprising;
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an elongate shaft having a proximal end and a distal end;
a plurality of cowls radially disposed about the elongate shaft proximate the distal end thereof;
each cowl defining an inlet port, an outlet port, and a fluid flow channel extending therebetween; and
a temperature sensor disposed within each flow channel. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A catheter for mapping vulnerable plaque deposits within a blood vessel, comprising;
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an elongate shaft having a proximal end and a distal end;
an array of cowls radially disposed about the elongate shaft proximate the distal end thereof;
each cowl of the array of cowls defining an inlet port, an outlet port, and a fluid flow channel extending therebetween;
a temperature sensor disposed within each flow channel; and
a means for radially expanding the array of cowls. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification
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Current AssigneeBoston Scientific Scimed, Inc. (Boston Scientific Corporation)
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Original AssigneeScimed Life Systems Incorporated (Boston Scientific Corporation)
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InventorsPrstic, Suzana, Kimmel, Scott, Bar-Cohen, Avram, DoBrava, Eric M., Iaizzo, Paul A., Hoey, Michael F., Kokate, Jaydeep Y., Berrada, Marwane S.
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Primary Examiner(s)Shaver; Kevin
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Assistant Examiner(s)MARMOR II, CHARLES ALAN
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Application NumberUS09/782,502Publication NumberTime in Patent Office721 DaysField of Search600/407,585,433-435,473,474,479,549,504,505 604/96.01,915 374/100,112US Class Current600/549CPC Class CodesA61B 2017/00101 using an array of thermosen...A61B 2017/22051 with an inflatable part, e....A61B 5/01 Measuring temperature of bo...A61B 5/6852 CathetersA61B 5/6853 with a balloonA61B 5/6858 with a distal basket, e.g. ...A61B 5/6859 with multiple distal splinesA61B 5/6885 Monitoring or controlling s...
