Title:
予め冷却された極低温アブレーションシステム
Document Type and Number:
Japanese Patent JP4195560
Kind Code:
B2
Abstract:
A method and apparatus for using a secondary refrigerant to precool and liquefy a primary refrigerant, then vaporizing and expanding the primary refrigerant to cool a cold tip 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 has a critical temperature above the critical temperature of the primary refrigerant, and a cooling temperature below the critical temperature of the primary refrigerant, thereby facilitating the use 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.
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Inventors:
Lihon
Application Number:
JP2001506426A
Publication Date:
December 10, 2008
Filing Date:
June 23, 2000
Export Citation:
Assignee:
Cryogen Incorporated
International Classes:
A61B18/02; F25D3/10; F25B9/02
Domestic Patent References:
| JP2001502788A |
Foreign References:
| WO1998017167A1 |
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda
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