CA2594853A1 - System and method for the treatment of heart tissue - Google Patents

System and method for the treatment of heart tissue Download PDF

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Publication number
CA2594853A1
CA2594853A1 CA002594853A CA2594853A CA2594853A1 CA 2594853 A1 CA2594853 A1 CA 2594853A1 CA 002594853 A CA002594853 A CA 002594853A CA 2594853 A CA2594853 A CA 2594853A CA 2594853 A1 CA2594853 A1 CA 2594853A1
Authority
CA
Canada
Prior art keywords
heart
infarct
scar
catheter
heater
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
CA002594853A
Other languages
French (fr)
Other versions
CA2594853C (en
Inventor
Michael D. Laufer
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.)
CO-REPAIR Inc
Original Assignee
Co-Repair, Inc.
Michael D. Laufer
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 Co-Repair, Inc., Michael D. Laufer filed Critical Co-Repair, Inc.
Publication of CA2594853A1 publication Critical patent/CA2594853A1/en
Application granted granted Critical
Publication of CA2594853C publication Critical patent/CA2594853C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/12—Devices for heating or cooling internal body cavities
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345—Vascular system
    • A61B2018/00351—Heart
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1475—Electrodes retractable in or deployable from a housing

Abstract

A device is disclosed for locating and treating an infarct scar in a heart.
The device includes a catheter, a collapsible heater and energizing means connected to the collapsible heater for energizing the collapsible heater to raise the temperature of the infarct scar to a temperature sufficient to reduce the surface area of the infarct scar.

Claims (23)

1. A method for treating an infarct scar in a heart, comprising the steps of:
introducing a catheter into the heart;

placing a heating element through the catheter and adjacent to the infarct scar;
and, energizing the heating element to raise the temperature of the infarct scar.
2. A method according to claim 1 wherein the step of energizing the heating element comprises controllably energizing the heating element to raise the temperature of the scar to a controlled temperature.
3. A method according to claim 1 further comprising the steps of repeating the placing and energizing steps to treat the entire infarct scar surface.
4. A method according to claim 1 wherein the step of energizing the heating element raises the temperature of the infarct scar to a temperature sufficient to reduce the surface area of the infarct scar.
5. A method according to claim 1 wherein said heating element is placed in contact with the infarct scar.
6. The method of claim 1 wherein the heating element is energized by applying radio frequency energy.
7. The method of claim 1 wherein the heating element is energized by resistive heating.
8. The method of claim 1 wherein the scar is energized to a temperature in the range of about 40 degrees Celsius to about 75 degrees Celsius.
9. A device for treating an infarct scar in a heart, comprising:
a catheter;

a collapsible heater connected to said catheter; and, energizing means connected to said collapsible heater for energizing at least a portion of the collapsible heater to raise the temperature of the infarct scar.
10. A device according to claim 9 wherein said collapsible heater is connected to the distal end of a cable.
11. A device according to claim 10 wherein said cable is slideable in a lumen of said catheter.
12. A device according to claim 9 wherein said collapsible heater is constructed and arranged to be sildeable through the lumen of said catheter when in a collapsed state.
13. A device according to claim 9 wherein said collapsible heater is constructed to expand to a deployed state in which said collapsible heater occupies greater volume than when said collapsible heater is in the collapsed state.
14. A device according to claim 9 wherein said collapsible heater comprises a feedback system to enable a user to determine the extent to which heating of the scar has been completed.
15. A device according to claim 14 wherein said collapsible heater comprises struts and said feedback system comprises strain gauges connected to said struts.
16. A device according to claim 9 wherein said collapsible heater further comprises:
a support connected to said catheter;

a plurality of struts connected to said support;
a mylar sheet connected to said struts; and, a plurality of electrodes connected to said struts.
17. A device for treating an infarct scar in a heart, comprising:
a catheter;
18 a self-positioning heater connected to said catheter; and, energizing means connected to said collapsible heater for energizing at least a portion of the collapsible heater to raise the temperature of the infarct scar.

18. A device according to claim 17 wherein said self-positioning heater is constructed to be movable by blood flow within the heart.
19. A device according to claim 17 wherein said self-positioning heater comprises a flexible cable connected to said catheter.
20. A device according to claim 18 wherein said self positioning heater comprises a collapsible heater which can expand to a deployed state having a volume greater than when in its collapsed state.
21. A system for determining the position of an infarct scar in a heart, comprising:
an infarct locator which can be placed inside the heart and which is movable by the blood flow in the heart toward the infarct scar; and, an external locating device which can be located external to the body wherein the heart is located and which permits a user to determine the location of said infarct locator.
22. A process for determining the position of an infarct scar in a heart, comprising:

placing in infarct locator inside the heart;

allowing the infarct locator to be moved by the blood flow in the heart to a location adjacent to the infarct scar; and, determining the location of the infarct locator using an external locating device located external to the body wherein the heart is located.
23. A method for treating an infarct scar in a heart, comprising the steps of:

introducing a catheter into the heart;

locating an infarct scar of the heart;

placing a heating element through the catheter and adjacent to the infarct scar;
and, energizing the heating element to raise the temperature of the infarct scar.
CA2594853A 2005-01-14 2006-01-05 System and method for the treatment of heart tissue Expired - Fee Related CA2594853C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/035,657 US7455670B2 (en) 2005-01-14 2005-01-14 System and method for the treatment of heart tissue
US11/035,657 2005-01-14
PCT/US2006/000530 WO2006076234A2 (en) 2005-01-14 2006-01-05 System and method for the treatment of heart tissue

Publications (2)

Publication Number Publication Date
CA2594853A1 true CA2594853A1 (en) 2006-07-20
CA2594853C CA2594853C (en) 2010-11-23

Family

ID=36678096

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2594853A Expired - Fee Related CA2594853C (en) 2005-01-14 2006-01-05 System and method for the treatment of heart tissue

Country Status (6)

Country Link
US (3) US7455670B2 (en)
EP (1) EP1838260A4 (en)
JP (1) JP2008526429A (en)
AU (1) AU2006205167B2 (en)
CA (1) CA2594853C (en)
WO (1) WO2006076234A2 (en)

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WO2006076234A3 (en) 2007-11-01
EP1838260A2 (en) 2007-10-03
JP2008526429A (en) 2008-07-24
WO2006076234A2 (en) 2006-07-20
EP1838260A4 (en) 2011-05-25
CA2594853C (en) 2010-11-23
AU2006205167B2 (en) 2010-04-15
AU2006205167A1 (en) 2006-07-20
US7455670B2 (en) 2008-11-25
US20090287204A1 (en) 2009-11-19
US20060161229A1 (en) 2006-07-20
US20140018891A1 (en) 2014-01-16

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