CA2378054A1 - Precooled cryogenic ablation system - Google Patents

Precooled cryogenic ablation system Download PDF

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Publication number
CA2378054A1
CA2378054A1 CA002378054A CA2378054A CA2378054A1 CA 2378054 A1 CA2378054 A1 CA 2378054A1 CA 002378054 A CA002378054 A CA 002378054A CA 2378054 A CA2378054 A CA 2378054A CA 2378054 A1 CA2378054 A1 CA 2378054A1
Authority
CA
Canada
Prior art keywords
primary refrigerant
refrigerant
tissue
critical temperature
precooled
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
CA002378054A
Other languages
French (fr)
Other versions
CA2378054C (en
Inventor
Hong Li
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.)
AMS Research LLC
Original Assignee
Cryogen, Inc.
Hong Li
American Medical Systems Gynecology, Inc.
Ams Research Corporation
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23350491&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2378054(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cryogen, Inc., Hong Li, American Medical Systems Gynecology, Inc., Ams Research Corporation filed Critical Cryogen, Inc.
Publication of CA2378054A1 publication Critical patent/CA2378054A1/en
Application granted granted Critical
Publication of CA2378054C publication Critical patent/CA2378054C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • 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
    • 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

A method and apparatus for using a secondary refrigerant (14) to precool and liquefy a primary refrigerant (12), then vaporizing and expanding the primary refrigerant to cool a cold tip (20) of a cryosurgical instrument for ablation of biological tissue, such as cardiovascular tissue, in particular endocardiac tissue and tissue inside a cardiac blood vessel. The secondary refrigerant (14) has a critical temperature above the critical temperature of the primary refrigerant (12), and a cooling temperature below the critical temperature of the primary refrigerant, thereby facilitating the use of of the precooling step to provide liquid primary refrigerant in an operating room environment in which the primary refrigerant could not otherwise be provided in the liquid phase.
CA002378054A 1999-06-25 2000-06-23 Precooled cryogenic ablation system Expired - Fee Related CA2378054C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/344,423 US6237355B1 (en) 1999-06-25 1999-06-25 Precooled cryogenic ablation system
US09/344,423 1999-06-25
PCT/US2000/017349 WO2001001049A1 (en) 1999-06-25 2000-06-23 Precooled cryogenic ablation system

Publications (2)

Publication Number Publication Date
CA2378054A1 true CA2378054A1 (en) 2001-01-04
CA2378054C CA2378054C (en) 2006-05-09

Family

ID=23350491

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002378054A Expired - Fee Related CA2378054C (en) 1999-06-25 2000-06-23 Precooled cryogenic ablation system

Country Status (9)

Country Link
US (2) US6237355B1 (en)
EP (1) EP1192396B1 (en)
JP (1) JP4195560B2 (en)
AT (1) ATE297535T1 (en)
AU (1) AU754357B2 (en)
CA (1) CA2378054C (en)
DE (1) DE60020705T2 (en)
ES (1) ES2242623T3 (en)
WO (1) WO2001001049A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8298219B2 (en) 2009-09-02 2012-10-30 Medtronic Cryocath Lp Cryotreatment device using a supercritical gas

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Also Published As

Publication number Publication date
AU5886200A (en) 2001-01-31
EP1192396A1 (en) 2002-04-03
WO2001001049A1 (en) 2001-01-04
ES2242623T3 (en) 2005-11-16
JP2003503123A (en) 2003-01-28
CA2378054C (en) 2006-05-09
DE60020705T2 (en) 2006-05-24
US6237355B1 (en) 2001-05-29
DE60020705D1 (en) 2005-07-14
EP1192396A4 (en) 2003-05-07
EP1192396B1 (en) 2005-06-08
JP4195560B2 (en) 2008-12-10
USRE40049E1 (en) 2008-02-12
ATE297535T1 (en) 2005-06-15
AU754357B2 (en) 2002-11-14

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