CA2464248A1 - Liquid cooled rf coagulation catheter - Google Patents

Liquid cooled rf coagulation catheter Download PDF

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Publication number
CA2464248A1
CA2464248A1 CA002464248A CA2464248A CA2464248A1 CA 2464248 A1 CA2464248 A1 CA 2464248A1 CA 002464248 A CA002464248 A CA 002464248A CA 2464248 A CA2464248 A CA 2464248A CA 2464248 A1 CA2464248 A1 CA 2464248A1
Authority
CA
Canada
Prior art keywords
lumen
energy transmission
transmission device
shaft
outer structure
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
CA002464248A
Other languages
French (fr)
Other versions
CA2464248C (en
Inventor
Huy D. Phan
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 CA2464248A1 publication Critical patent/CA2464248A1/en
Application granted granted Critical
Publication of CA2464248C publication Critical patent/CA2464248C/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
    • 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
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
    • A61B2017/003—Steerable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00867—Material properties shape memory effect
    • 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
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
    • 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
    • A61B2018/00059—Material properties
    • A61B2018/00071—Electrical conductivity
    • A61B2018/00083—Electrical conductivity low, i.e. electrically insulating
    • 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
    • A61B2018/00059—Material properties
    • A61B2018/00089—Thermal conductivity
    • A61B2018/00095—Thermal conductivity high, i.e. heat conducting
    • 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
    • A61B2018/0016—Energy applicators arranged in a two- or three dimensional array
    • 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
    • A61B2018/00166—Multiple lumina
    • 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
    • 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
    • A61B2018/00357—Endocardium
    • 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
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577—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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
    • A61B2018/00654—Sensing and controlling the application of energy with feedback, i.e. closed loop control with individual control of each of a plurality of energy emitting elements
    • 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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00791—Temperature
    • 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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00791—Temperature
    • A61B2018/00797—Temperature measured by multiple temperature sensors
    • 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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00791—Temperature
    • A61B2018/00821—Temperature measured by a thermocouple
    • 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
    • A61B2018/1405—Electrodes having a specific shape
    • A61B2018/1435—Spiral
    • A61B2018/1437—Spiral whereby the windings of the spiral touch each other such as to create a continuous surface
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/12—Shape memory

Abstract

The device is a coagulation catheter built using a long multilumen elongated structure of relatively high thermal conductivity having at its distal end a plurality of ablation electrodes that can be cooled off by a cooling recirculation liquid through at least two of the lumens of the structure.</S DOAB>

Claims (31)

1. A soft tissue coagulation device, comprising:
a shaft defining a distal end and including an outer structure formed from material that is relatively high in thermally conductivity and substantially electrically nonconductive;
at least one energy transmission device supported on the outer structure in spaced relation to the distal end of the shaft; and at least one fluid lumen defined by the outer structure and located such that a portion thereof is aligned with the at least one energy transmission device.
2. A device as claimed in claim 1, wherein the shaft is relatively short.
3. A device as claimed in claim 1, wherein at least a portion of the shaft is relatively stiff.
4. A device as claimed in claim 3, wherein the shaft includes a malleable mandrel and the outer structure is mounted on the malleable mandrel.
5. A device as claimed in claim 3, wherein the shaft includes a tubular member defining a distal end and the outer structure extends distally from the distal end of the tubular member.
6. A device as claimed in claim 1, wherein the shaft include a proximal portion and a distal portion, the device further comprising:
a steering apparatus that deflects the distal portion relative to the proximal portion.
7. A device as claimed in claim 1, wherein the shaft includes a pre-bent portion.
8. A device as claimed in claim 1, wherein the at least one fluid lumen comprises an inlet lumen and an outlet lumen.
9. A device as claimed in claim 8, wherein the inlet lumen and the outlet lumen define respective distal ends, the device further comprising:
a non-conductive tip member defining a lumen that connects the distal ends of the inlet lumen and outlet lumen.
10. A device as claimed in claim 1, wherein the at least one fluid lumen includes inner and outer lumen surfaces defining a distance therebetween, the outer structure includes a wall defining a wall thickness between the at least one energy transmission device and the at least one fluid lumen, and the distance between the inner and outer lumen surfaces is greater than the wall thickness.
11. A device as claimed in claim 1, wherein the at least one energy transmission device comprises a plurality of longitudinally spaced energy transmission devices.
12. A device as claimed in claim 1, wherein the at least one energy transmission device comprises an electrode.
13. A surgical probe as claimed in claim 1, wherein outer structure defines a perimeter, the at least one energy transmission device extends around less than the entire perimeter, the at least one fluid lumen comprises inlet and outlet lumens, and the inlet lumen is between a substantial portion of at least one the energy transmission device and the outlet lumen.
14. A surgical probe as claimed in claim 13, wherein the outlet lumen includes thermal insulation.
15. A soft tissue coagulation device, comprising:
a shaft defining a distal end and including an outer structure formed from material that is substantially electrically nonconductive;

at least one energy transmission device supported on the outer structure in spaced relation to the distal end of the shaft; and at least one fluid lumen defined by the outer structure such that a wall having a wall thickness is between the at least one fluid lumen and the at least one energy transmission device, located such that a portion thereof is aligned with the at least one energy transmission device, and including inner and outer lumen surfaces defining a distance therebetween that is greater than the wall thickness.
16. A device as claimed in claim 15, wherein the shaft is relatively short.
17. A device as claimed in claim 15, wherein at least a portion of the shaft is relatively stiff.
18. A device as claimed in claim 15, wherein the shaft includes a malleable mandrel and the outer structure is mounted on the malleable mandrel.
19. A device as claimed in claim 15, wherein the shaft includes a tubular member defining a distal end and the outer structure extends distally from the distal end of the tubular member.
20. A device as claimed in claim 15, wherein the shaft include a proximal portion and a distal portion, the device further comprising:
a steering apparatus that deflects the distal portion relative to the proximal portion.
21. A device as claimed in claim 15, wherein the shaft includes a pre-bent portion.
22. A device as claimed in claim 15, wherein the at least one fluid lumen comprises an inlet lumen and an outlet lumen.
23. A device as claimed in claim 22, wherein the inlet lumen and the outlet lumen define respective distal ends, the device further comprising:
a non-conductive tip member defining a lumen that connects the distal ends of the inlet lumen and outlet lumen.
24. A device as claimed in claim 15, wherein the at least one energy transmission device comprises a plurality of longitudinally spaced energy transmission devices.
25. A device as claimed in claim 15, wherein the at least one energy transmission device comprises an electrode.
26. A surgical probe as claimed in claim 15, wherein outer structure defines a perimeter, the at least one energy transmission device extends around less than the entire perimeter, the at least one fluid lumen comprises inlet and outlet lumens, and the inlet lumen is between a substantial portion of at least one the energy transmission device and the outlet lumen.
27. A surgical probe as claimed in claim 26, wherein the outlet lumen includes thermal insulation.
28. A surgical probe as claimed in claim 15, wherein the distance between the inner and outer lumen surfaces is at least two times greater than the wall thickness.
29. A method of coagulating soft tissue with an apparatus including an elongate energy transmission device and an inner lumen, comprising the steps of:
positioning the elongate energy transmission device in electrical contact with tissue;
transmitting energy to the tissue with the energy transmission device; and passing fluid through the inner lumen such that heat is transferred from the energy transmission device to the fluid.
30. A method as claimed in claim 29, wherein the step of positioning the elongate energy transmission device comprises positioning a plurality of spaced electrodes in electrical contact with tissue.
31. A method as claimed in claim 29, wherein the step of passing fluid through the inner lumen comprises passing fluid through an inlet lumen and an outlet lumen.
CA2464248A 2001-10-22 2002-09-04 Liquid cooled rf coagulation catheter Expired - Fee Related CA2464248C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/045,669 2001-10-22
US10/045,669 US6939350B2 (en) 2001-10-22 2001-10-22 Apparatus for supporting diagnostic and therapeutic elements in contact with tissue including electrode cooling device
PCT/US2002/028088 WO2003034932A1 (en) 2001-10-22 2002-09-04 Liquid cooled rf coagulation catheter

Publications (2)

Publication Number Publication Date
CA2464248A1 true CA2464248A1 (en) 2003-05-01
CA2464248C CA2464248C (en) 2011-08-02

Family

ID=21939241

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2464248A Expired - Fee Related CA2464248C (en) 2001-10-22 2002-09-04 Liquid cooled rf coagulation catheter

Country Status (7)

Country Link
US (1) US6939350B2 (en)
EP (1) EP1437976B1 (en)
JP (1) JP4286139B2 (en)
AT (1) ATE367125T1 (en)
CA (1) CA2464248C (en)
DE (1) DE60221263T2 (en)
WO (1) WO2003034932A1 (en)

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CA2464248C (en) 2011-08-02
WO2003034932A1 (en) 2003-05-01
JP4286139B2 (en) 2009-06-24
US20030078644A1 (en) 2003-04-24
DE60221263T2 (en) 2008-04-10
US6939350B2 (en) 2005-09-06
EP1437976B1 (en) 2007-07-18
EP1437976A1 (en) 2004-07-21
DE60221263D1 (en) 2007-08-30
JP2005506872A (en) 2005-03-10

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