CA2438687A1 - Intravascular temperature sensor - Google Patents

Intravascular temperature sensor Download PDF

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Publication number
CA2438687A1
CA2438687A1 CA002438687A CA2438687A CA2438687A1 CA 2438687 A1 CA2438687 A1 CA 2438687A1 CA 002438687 A CA002438687 A CA 002438687A CA 2438687 A CA2438687 A CA 2438687A CA 2438687 A1 CA2438687 A1 CA 2438687A1
Authority
CA
Canada
Prior art keywords
catheter
temperature sensor
balloon
elongate shaft
cowls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002438687A
Other languages
French (fr)
Other versions
CA2438687C (en
Inventor
Jaydeep Y. Kokate
Eric M. Dobrava
Marwane S. Berrada
Scott Kimmel
Suzana Prstic
Michael F. Hoey
Avram Bar-Cohen
Paul A. Iaizzo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boston Scientific Ltd Barbados
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2438687A1 publication Critical patent/CA2438687A1/en
Application granted granted Critical
Publication of CA2438687C publication Critical patent/CA2438687C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6852—Catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6852—Catheters
    • A61B5/6853—Catheters with a balloon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6852—Catheters
    • A61B5/6858—Catheters with a distal basket, e.g. expandable basket
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6852—Catheters
    • A61B5/6859—Catheters with multiple distal splines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6885—Monitoring or controlling sensor contact pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00022—Sensing or detecting at the treatment site
    • A61B2017/00084—Temperature
    • A61B2017/00101—Temperature using an array of thermosensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22051—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation

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 adpated to contact inner surface of the blood vessel. In another preferred embodiment, at least one temperatre sensor is disposed within a channel defined by a body member that is disposed about the elongate shaft.

Claims (33)

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.
2. The catheter of claim 1, wherein the at least one temperature sensor is adapted to measure the temperature of blood passing through the flow channel.
3. The catheter of claim 1, wherein the at least one temperature sensor is adapted to measure the temperature of blood passing through the flow channel;
and 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.
4. The catheter of claim 1, wherein the temperature sensor comprises a resistance temperature device.
5. The catheter of claim 1, wherein the temperature sensor comprises a thermocouple.
6. The catheter of claim 1, wherein the temperature sensor comprises a thermistor.
7. The catheter of claim 1, wherein the temperature sensor comprises a microbolometer.
8. The catheter of claim 1, further comprising an interstitial member disposed between the at least one cowl and the elongate shaft.
9. The catheter of claim 1, further comprising a balloon disposed between the at least one cowl and the elongate shaft.
10. The catheter of claim 9, wherein the balloon has an inflated state and a deflated state.
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.
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.
13 13. The catheter of claim 1, further comprising a plurality of cowls radially disposed about the elongate shaft.
14. A catheter for mapping vulnerable plaque deposits within a blood vessel, comprising;

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.
15. The catheter of claim 14, wherein each temperature sensor comprises a resistance temperature device.
16. The catheter of claim 14, wherein each temperature sensor comprises a thermocouple.
17. The catheter of claim 14, wherein each temperature sensor comprises a thermistor.
18. The catheter of claim 14, wherein each temperature sensor comprises a microbolometer.
19. The catheter of claim 14, further comprising an interstitial member disposed between the cowls and the elongate shaft.
20. The catheter of claim 14, further comprising a balloon disposed between the plurality of cowls and the elongate shaft.
21. The catheter of claim 20, wherein the balloon has an inflated state and a deflated state.
22. The catheter of claim 21, wherein the balloon is configured such that the flow of blood around the cowls is precluded when the balloon is in the inflated state.
23. The catheter of claim 21, wherein the balloon is configured such that the cowls are urged radially away from the elongate shaft when the balloon is in the inflated state.
24. A catheter for mapping vulnerable plaque deposits within a blood vessel, comprising;

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.
25. The catheter of claim 24, wherein each temperature sensor comprises a resistance temperature device.
26. The catheter of claim 24, wherein each temperature sensor comprises a thermocouple.
27. The catheter of claim 24, wherein each temperature sensor comprises a thermistor.
28. The catheter of claim 24, wherein each temperature sensor comprises a microbolometer.
29. The catheter of claim 24, wherein the means for radially expanding the array of cowls comprises a hydraulic mechanism.
30. The catheter of claim 29, wherein the hydraulic mechanism comprises a balloon.
31. The catheter of claim 30, wherein the balloon is configured such that flow of blood around the cowls is precluded when the balloon is in an inflated state.
32. The catheter of claim 24, wherein the means for radially expanding the array of cowls comprises a mechanical mechanism.
33. The catheter of claim 24, wherein the means for radially expanding the array of cowls comprises a plurality of resilient arms.
CA2438687A 2001-02-13 2002-02-07 Intravascular temperature sensor Expired - Fee Related CA2438687C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/782,502 2001-02-13
US09/782,502 US6514214B2 (en) 2001-02-13 2001-02-13 Intravascular temperature sensor
PCT/US2002/003712 WO2002069795A1 (en) 2001-02-13 2002-02-07 Intravascular temperature sensor

Publications (2)

Publication Number Publication Date
CA2438687A1 true CA2438687A1 (en) 2002-09-12
CA2438687C CA2438687C (en) 2011-04-26

Family

ID=25126252

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2438687A Expired - Fee Related CA2438687C (en) 2001-02-13 2002-02-07 Intravascular temperature sensor

Country Status (8)

Country Link
US (2) US6514214B2 (en)
EP (1) EP1359840B1 (en)
JP (1) JP4124654B2 (en)
AT (1) ATE297686T1 (en)
CA (1) CA2438687C (en)
DE (1) DE60204663T2 (en)
ES (1) ES2240695T3 (en)
WO (1) WO2002069795A1 (en)

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CA2438687C (en) 2011-04-26
EP1359840A1 (en) 2003-11-12
ATE297686T1 (en) 2005-07-15
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US20020111560A1 (en) 2002-08-15
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DE60204663T2 (en) 2006-05-18
JP4124654B2 (en) 2008-07-23
WO2002069795A1 (en) 2002-09-12
US6514214B2 (en) 2003-02-04
JP2004528878A (en) 2004-09-24
EP1359840B1 (en) 2005-06-15

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