CA2496575A1 - Cryo ablation coil - Google Patents

Cryo ablation coil Download PDF

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Publication number
CA2496575A1
CA2496575A1 CA002496575A CA2496575A CA2496575A1 CA 2496575 A1 CA2496575 A1 CA 2496575A1 CA 002496575 A CA002496575 A CA 002496575A CA 2496575 A CA2496575 A CA 2496575A CA 2496575 A1 CA2496575 A1 CA 2496575A1
Authority
CA
Canada
Prior art keywords
accordance
therapy apparatus
cryo
tube
distal end
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
CA002496575A
Other languages
French (fr)
Other versions
CA2496575C (en
Inventor
Daniel M. Lafontaine
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 CA2496575A1 publication Critical patent/CA2496575A1/en
Application granted granted Critical
Publication of CA2496575C publication Critical patent/CA2496575C/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
    • A61B18/02—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
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00022—Sensing or detecting at the treatment site
    • A61B2017/00084—Temperature
    • 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
    • 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
    • A61B2018/00017—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids with gas
    • 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
    • A61B2018/0022—Balloons
    • 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
    • A61B2018/0022—Balloons
    • A61B2018/0025—Multiple balloons
    • A61B2018/00255—Multiple balloons arranged one inside another
    • 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
    • A61B2018/0212—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques using an instrument inserted into a body lumen, e.g. catheter
    • 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
    • A61B2018/0231—Characteristics of handpieces or probes
    • A61B2018/0262—Characteristics of handpieces or probes using a circulating cryogenic fluid

Abstract

The present invention pertains to devices for causing cold-induced necrosis or apoptosis. The present invention includes a cryo therapy apparatus including a core member; a cryoplasty tube coupled to the core member, the cryoplasty tu be having a proximal end and a distal end; wherein the distal end includes a co il disposed about at least a portion of the tubular sheath, the coil including at least one opening; an outer tube disposed over at least a portion of the cryoplasty tube; and a cooling member disposed over the coil and coupled to the outer tube. A method of causing cold-induced necrosis is also disclosed.

Claims (38)

1. A cryo therapy apparatus, comprising:

an elongate core member;
a cryo tube disposed adjacent to the core member, the cryo tube having a proximal region and a distal region;
wherein the distal region includes a coil disposed about at least a portion of the core member, the coil including at least one opening;
an outer tube disposed over at least a portion of the cryo tube; and a cooling member disposed over the coil and coupled to the outer tube.
2. The cryo therapy apparatus in accordance with claim 1, further comprising a core wire and wherein the core member comprises a tubular sheath adapted to be slidably disposed about the core wire.
3. The cryo therapy apparatus in accordance with claim 1, wherein at least a portion of the coil comprises gold.
4. The cryo therapy apparatus in accordance with claim 1, wherein the coil includes one or more openings.
5. The cryo therapy apparatus in accordance with claim 4, where the openings are frusto-conical in shape.
6. The cryo therapy apparatus in accordance with claim 1, further comprising a tube disposed within the outer tube, the tube having a distal end disposed within the cooling member.
7. The cryo therapy apparatus in accordance with claim 5, wherein the tube further comprises a temperature sensor.
8. The cryo therapy apparatus in accordance with claim 1, wherein the outer tube includes a support member.
9. The cryo therapy apparatus in accordance with claim 8, wherein the support member includes a braid.
10. The cryo therapy apparatus in accordance with claim 1, wherein the cooling member includes a support member.
11. The cryo therapy apparatus in accordance with claim 10, wherein the support member includes a braid.
12. The cryo therapy apparatus in accordance with claim 1, wherein the cooling member comprises a balloon.
13. The cryo therapy apparatus in accordance with claim 1, further comprising an outer member disposed over the cooling member.
14. The cryo therapy apparatus in accordance with claim 13, further comprising a second outer tube disposed over the outer tube, and wherein the outer member is coupled to the second outer tube.
15. The cryo therapy apparatus in accordance with claim 1, further comprising a pull wire having a proximal and a distal end, wherein at least a portion of the proximal end is disposed within the outer tube and wherein the distal end is coupled proximate to a distal end of the coil.
16. A cryo therapy apparatus, comprising:
an elongate shaft having a proximal end and a distal end;
a tubular sheath disposed about and slidable along the shaft;
a cryo tube disposed adjacent to the tubular sheath, the cryo tube having a proximal end and a distal end;

wherein the distal end includes a coil disposed about at least a portion of the tubular sheath, the coil including one or more openings;
an outer tube disposed over at least a portion of the cryo tube;
a cooling member disposed over the coil and coupled to the outer tube; and a tube disposed within the outer tube, the tube having a distal end disposed within the cooling member.
17. The cryo therapy apparatus in accordance with claim 16, wherein at least a portion of the coil comprises gold.
18. The cryo therapy apparatus in accordance with claim 16, wherein the openings have the shape of a flow directing nozzle.
19. The cryo therapy apparatus in accordance with claim 16, wherein the tube further comprises a temperature sensor.
20. The cryo therapy apparatus in accordance with claim 16, wherein the outer tube includes a support member.
21. The cryo therapy apparatus in accordance with claim 20, wherein the support member includes a braid.
22. The cryo therapy apparatus in accordance with claim 16, wherein the cooling member includes a support member.
23. The cryo therapy apparatus in accordance with claim 22, wherein the support member includes a braid.
24. The cryo therapy apparatus in accordance with claim 16, wherein the cooling member comprises a balloon.
25. The cryo therapy apparatus in accordance with claim 16, further comprising an outer cooling member disposed over the cooling member.
26. The cryo therapy apparatus in accordance with claim 25, further comprising a second outer tube disposed over the outer tube, and wherein the outer cooling member is coupled to the second outer tube.
27. The cryo therapy apparatus in accordance with claim 16, further comprising a pull wire having a proximal and a distal end, wherein at least a portion of the proximal end is disposed within the outer tube and wherein the distal end is coupled proximate to a distal end of the coil.
28. A method of causing cold-induced necrosis or apoptosis, comprising the steps of:
advancing across a target site a cryo therapy apparatus including an elongate shaft having a proximal end and a distal end; a tubular sheath disposed about and slidable upon the shaft; a cryo tube coupled to the tubular sheath, the cryo tube having a proximal end and a distal end; wherein the distal end includes a coil disposed about at least a portion of the tubular sheath, the coil including at least one opening; an outer tube disposed over at least a portion of the cryo tube; and a cooling member disposed over the coil and coupled to the outer tube;
delivering coolant through the cryo tube, wherein coolant passes through openings within the coil and is sprayed onto an interior surface of the cooling member;
and cooling cells within the target site.
29. The method in accordance with claim 28, wherein the target site is a chamber of the heart.
30. The method in accordance with claim 28, wherein the target site is an artery.
31. The method in accordance with claim 28, wherein the target site is a vein.
32. The method in accordance with claim 28, wherein the target site is the esophagus.
33. The method in accordance with claim 28, wherein the target site is the trachea.
34. The method in accordance with claim 28, wherein the target site is an intestine.
35. The method in accordance with claim 28, wherein the cryo therapy apparatus further comprises a pull wire having a proximal and a distal end, wherein at least a portion of the proximal end is disposed within the outer tube and wherein the distal end is coupled proximate to a distal end of the coil.
36. The method in accordance with claim 35, further comprising the step of deflecting the cryo therapy apparatus by pulling on the pull wire.
37. The method in accordance with claim 28, wherein the cryo therapy apparatus further comprises a tube disposed within the outer tube, the tube having a distal end disposed within the cooling member.
38. The method in accordance with claim 37, further comprising the step of draining coolant from the cooling member through the tube.
CA2496575A 2002-08-30 2003-07-31 Cryo ablation coil Expired - Fee Related CA2496575C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/231,738 2002-08-30
US10/231,738 US6929639B2 (en) 2002-08-30 2002-08-30 Cryo ablation coil
PCT/US2003/024129 WO2004019798A1 (en) 2002-08-30 2003-07-31 Cryo ablation coil

Publications (2)

Publication Number Publication Date
CA2496575A1 true CA2496575A1 (en) 2004-03-11
CA2496575C CA2496575C (en) 2012-02-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2496575A Expired - Fee Related CA2496575C (en) 2002-08-30 2003-07-31 Cryo ablation coil

Country Status (7)

Country Link
US (2) US6929639B2 (en)
EP (1) EP1531747B1 (en)
JP (1) JP4416654B2 (en)
AT (1) ATE540632T1 (en)
AU (1) AU2003268047A1 (en)
CA (1) CA2496575C (en)
WO (1) WO2004019798A1 (en)

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US6929639B2 (en) 2005-08-16
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