CA2638963A1 - Coiled ablation catheter system - Google Patents

Coiled ablation catheter system Download PDF

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Publication number
CA2638963A1
CA2638963A1 CA002638963A CA2638963A CA2638963A1 CA 2638963 A1 CA2638963 A1 CA 2638963A1 CA 002638963 A CA002638963 A CA 002638963A CA 2638963 A CA2638963 A CA 2638963A CA 2638963 A1 CA2638963 A1 CA 2638963A1
Authority
CA
Canada
Prior art keywords
sheath
ablating element
shape
ablating
disposed
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
CA002638963A
Other languages
French (fr)
Other versions
CA2638963C (en
Inventor
David Keane
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.)
General Hospital Corp
Original Assignee
The General Hospital Corporation D/B/A Massachusetts General Hospital
David Keane
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
Priority claimed from US09/396,959 external-priority patent/US6607520B2/en
Priority claimed from US09/539,056 external-priority patent/US6632223B1/en
Application filed by The General Hospital Corporation D/B/A Massachusetts General Hospital, David Keane filed Critical The General Hospital Corporation D/B/A Massachusetts General Hospital
Publication of CA2638963A1 publication Critical patent/CA2638963A1/en
Application granted granted Critical
Publication of CA2638963C publication Critical patent/CA2638963C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
    • 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
    • A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
    • 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
    • A61B2018/00029—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids open
    • 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
    • A61B2018/00107—Coatings on the energy applicator
    • A61B2018/00136—Coatings on the energy applicator with polymer
    • 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
    • A61B2018/00375—Ostium, e.g. ostium of pulmonary vein or artery
    • 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
    • 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
    • A61B2018/1497—Electrodes covering only part of the probe circumference
    • 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
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2002/821—Ostial stents

Abstract

A cardiac ablation catheter (100) includes a coil-like ablating element (102 ) this is deployed from an elongate, flexible sheath (104). The ablating eleme nt (102), while in the deployed position, has a shape with at least one revolution oriented in a plane that is orthogonal to a longitudinal axis (108) of the sheath. The catheter system (100) is well-situated to ablate a circumferential region of tissue about a pulmonary vein or the posterior wall of the left atrium proximate the pulmonary vein os. The treat ed tissue regional electrically isolates the atria from the pulmonary vein.

Claims (19)

1. A cardiac catheter system, comprising:
an elongate, flexible sheath having an internal lumen, a distal end and a longitudinal axis;
an ablating element disposed within the sheath and selectively deployable therefrom so as to project from the sheath in a substantially coil-like shape having at least one revolution, wherein the ablating element, in a deployed condition, is oriented in a plane that is substantially orthogonal to the longitudinal axis of the sheath; and at least one exposed, conductive region disposed on at least a portion of the ablating element.
2. The system of claim 1, wherein the ablating element is self-expanding and assumes a predetermined shape upon deployment from the sheath.
3. The system of claim 2, wherein the ablating element is made from a shape-memory material.
4. The system of claim 3 wherein the shape-memory material is selected from the group consisting of nickel-titanium alloys and copper-based alloys.
5. The system of claim 3 wherein the shape-memory material is superelastic.
6. The system of claim 3, wherein the shape-memory material has a two-way shape memory.
7. The system of claim 1 wherein the ablating element further comprises a terminal which is connectable to an energy source selected from the group consisting of radio frequency energy, laser energy, microwave energy, ultrasonic energy, and cryogenic energy.
8. The system of claim 1, further comprising a guide wire disposed within and selectively deployable from the sheath.
9. The system of claim 8, wherein a leading end of the ablating element is secured to the guide wire.
10. The system of claim 9, wherein the ablating element is manually and selectively expandable from the sheath.
11. The system of claim 1 wherein the coil-like shape has a radius which expands as the ablating element advances from the sheath.
12. The system of claim 9 wherein the ablating element is expandable from the sheath by rotating the guide wire along the longitudinal axis of the sheath.
13. The system of claim 9, wherein the leading end of the ablating element is surrounded by an insulating material.
14. The system of claim 9, wherein a lagging end of the ablating element supports the coil-like shape of the ablating element.
15. The system of claim 1, further comprising a non-conductive, insulating element disposed within the sheath and selectively deployable therefrom, wherein the ablating element is deployable from within the non-conducting, insulating element.
16. The system of claim 15 wherein the ablating element is retractable into the non-conductive, insulating element.
17. The system of claim 1, wherein the at least one exposed, conductive region further comprises a plurality of discrete electrodes.
18. The system of claim 1, wherein the coil-like shape of the ablating member has a crenulated circumferential region.
19 A cardiac catheter system, comprising:
an elongate, flexible sheath having dimensions suitable for intravascular passage and a longitudinal axis;
a guide wire disposed within the sheath and selectively deployable from a distal end of the sheath;
an ablating element disposed within and selectively deployable from the distal end of the sheath in concert with the guide wire, the ablating element having a leading end secured to the guide wire and a trailing portion disposed within the sheath;
and an ablating element deployment mechanism that is effective to advance at least a portion of the trailing portion of the ablating element out of the distal end of the sheath by a predetermined distance to cause the ablating element to assume a coil-like shape.
CA2638963A 1999-09-15 2000-09-11 Coiled ablation catheter system Expired - Lifetime CA2638963C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09/396,959 1999-09-15
US09/396,959 US6607520B2 (en) 1999-09-15 1999-09-15 Coiled ablation catheter system
US09/539,056 2000-03-30
US09/539,056 US6632223B1 (en) 2000-03-30 2000-03-30 Pulmonary vein ablation stent and method
CA002388823A CA2388823C (en) 1999-09-15 2000-09-11 Coiled ablation catheter system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002388823A Division CA2388823C (en) 1999-09-15 2000-09-11 Coiled ablation catheter system

Publications (2)

Publication Number Publication Date
CA2638963A1 true CA2638963A1 (en) 2001-03-22
CA2638963C CA2638963C (en) 2012-03-20

Family

ID=27015709

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002388823A Expired - Lifetime CA2388823C (en) 1999-09-15 2000-09-11 Coiled ablation catheter system
CA2638963A Expired - Lifetime CA2638963C (en) 1999-09-15 2000-09-11 Coiled ablation catheter system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002388823A Expired - Lifetime CA2388823C (en) 1999-09-15 2000-09-11 Coiled ablation catheter system

Country Status (4)

Country Link
EP (1) EP1223876A4 (en)
JP (1) JP2003522561A (en)
CA (2) CA2388823C (en)
WO (2) WO2001019269A1 (en)

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AU2002327219B2 (en) 2001-07-06 2009-04-23 Syntach Ag Anti-arrhythmia devices and methods of use
DE10152066A1 (en) * 2001-10-25 2003-05-08 Curative Ag stent
US6656175B2 (en) * 2001-12-11 2003-12-02 Medtronic, Inc. Method and system for treatment of atrial tachyarrhythmias
US6814733B2 (en) * 2002-01-31 2004-11-09 Biosense, Inc. Radio frequency pulmonary vein isolation
DE10218426A1 (en) * 2002-04-24 2003-11-06 Biotronik Mess & Therapieg Ablation device for cardiac tissue, in particular for producing linear lesions between two vascular orifices in the heart
US20040106952A1 (en) * 2002-12-03 2004-06-03 Lafontaine Daniel M. Treating arrhythmias by altering properties of tissue
WO2004078066A2 (en) 2003-03-03 2004-09-16 Sinus Rhythm Technologies, Inc. Primary examiner
EP1605866B1 (en) 2003-03-03 2016-07-06 Syntach AG Electrical conduction block implant device
WO2005039689A2 (en) 2003-10-24 2005-05-06 Sinus Rhythm Technologies, Inc. Methods and devices for creating cardiac electrical blocks
SE526861C2 (en) 2003-11-17 2005-11-15 Syntach Ag Tissue lesion creation device and a set of devices for the treatment of cardiac arrhythmia disorders
US9398967B2 (en) 2004-03-02 2016-07-26 Syntach Ag Electrical conduction block implant device
US20050222672A1 (en) * 2004-04-01 2005-10-06 Cappella, Inc. Ostial stent
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EP2364118B1 (en) * 2008-10-04 2017-07-19 Boston Scientific Scimed, Inc. Loop structures for supporting diagnostic and/or therapeutic elements in contact with tissue
US8712550B2 (en) * 2008-12-30 2014-04-29 Biosense Webster, Inc. Catheter with multiple electrode assemblies for use at or near tubular regions of the heart
EP2395933B1 (en) * 2009-02-12 2016-05-04 UMC Utrecht Holding B.V. Ablation catheter for electrically isolating cardiac tissue
WO2013028993A2 (en) * 2011-08-24 2013-02-28 Boston Scientific Scimed, Inc. Device and methods for nerve modulation
US9179974B2 (en) 2013-03-15 2015-11-10 Medtronic Ardian Luxembourg S.A.R.L. Helical push wire electrode
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US9468407B2 (en) * 2014-05-30 2016-10-18 Biosense Webster (Israel) Ltd. Catheter with distal section having side-by-side loops
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Also Published As

Publication number Publication date
CA2388823C (en) 2008-11-18
JP2003522561A (en) 2003-07-29
CA2638963C (en) 2012-03-20
EP1223876A4 (en) 2003-05-02
WO2001019269A1 (en) 2001-03-22
WO2001019270A1 (en) 2001-03-22
CA2388823A1 (en) 2001-03-22
EP1223876A1 (en) 2002-07-24

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Effective date: 20200911