Title:
医療用ガス再循環システム
Document Type and Number:
Japanese Patent JP4563795
Kind Code:
B2
Abstract:
A medical device ( 103 ) is supplied ( 105 ) with a gas mixture from a higher pressure section of a main circuit ( 102 ) in which medical gas recirculates though the higher pressure section and a lower pressure section. Decontaminated spent gas is returned to the lower pressure section of the main circuit Pressure in the higher pressure section is maintained by a pressure maintaining valve ( 141 ) and gas flow in the main circuit is maintained by a volume regulator ( 145 ) in the lower pressure section. The composition of the recirculating gas mixture is maintained by addition of respective feed gases in response to concentration and/or volume variation measurement. The method has particular application to the feed of a binary oxygen/xenon mixture to a cardiopulmonary bypass oxygenator or an artificial ventilator.
Inventors:
Neil Alexander Downey
Car, Stuart Alexander
Car, Stuart Alexander
Application Number:
JP2004500957A
Publication Date:
October 13, 2010
Filing Date:
May 01, 2003
Export Citation:
Assignee:
AIR PRODUCTS AND CHEMICALS INCORPORATED
International Classes:
A61M16/00; A61M1/16; A61M16/12; A61M1/36; A61M16/10; A61M16/22
Foreign References:
| US6131571 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu
Masaya Nishiyama
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu
Masaya Nishiyama