Precision of xenon content measurement in a ventilatory anesthesia apparatus
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-005/08
A61M-016/01
A61M-016/10
A61M-016/20
A61M-016/12
G01N-033/00
A61M-016/00
A61M-016/22
A61M-016/08
출원번호
US-0994022
(2009-05-12)
등록번호
US-8870784
(2014-10-28)
우선권정보
FR-08 53430 (2008-05-27)
국제출원번호
PCT/FR2009/050859
(2009-05-12)
§371/§102 date
20110111
(20110111)
국제공개번호
WO2009/153468
(2009-12-23)
발명자
/ 주소
Blandin, Richard
Cariou, Bernard
Daviet, Christian
Dussud, Sophie
Kissi, Noureddine
출원인 / 주소
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
대리인 / 주소
White, Allen E.
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
The invention relates to an apparatus for the ventilatory anaesthesia of a patient by administration of a gas containing gaseous xenon that comprises a main gas circuit (CP) and a means for determining the xenon content (S6, M1) adapted for and capable of determining the gaseous xenon content in the
The invention relates to an apparatus for the ventilatory anaesthesia of a patient by administration of a gas containing gaseous xenon that comprises a main gas circuit (CP) and a means for determining the xenon content (S6, M1) adapted for and capable of determining the gaseous xenon content in the main circuit (CP), and comprising at least one hot wire sensor (S6-E) including at least one electrically conducting wire (FC1) in direct contact with at least a portion of the xenon-containing gaseous flow. At least one hot wire sensor (S6-E) including at least one conducting wire (FC1) is arranged on a gas-supply main line (LP) including a bypass line (BP) fluidically connected to said gas-supply main line (LP) upstream and downstream from said at least one conducting wire (FC1) and taking into account the gas flow direction in said main line (LP), and at least a first electrovalve (EV1) is provided at the upstream connection of the bypass line (BP) to said main line (LP) in order to direct the xenon-containing gaseous flow either towards the main line (LP) on which said at least one conducting wire (FC1) is provided, or towards the bypass line (BP).
대표청구항▼
1. An apparatus for ventilatory anesthesia of a patient by administration of a gas containing gaseous xenon, said apparatus comprising: a main gas circuit (CP) in the form of an open or closed circuit having an inhalation branch (16) for supplying a gaseous mixture containing xenon to the patient an
1. An apparatus for ventilatory anesthesia of a patient by administration of a gas containing gaseous xenon, said apparatus comprising: a main gas circuit (CP) in the form of an open or closed circuit having an inhalation branch (16) for supplying a gaseous mixture containing xenon to the patient and an exhalation branch (18) for conveying the gaseous mixture containing xenon exhaled by the patient, andmeans (S6, M1) for determining the concentration of xenon, which are designed and able to determine the gaseous xenon content in at least part of the main circuit (CP), said means (S6, M1) for determining the concentration of xenon comprising a first hot-wire sensor (S6-E) having a first electrically conductive wire (FC1) in direct contact with at least part of the gaseous flow containing the xenon, wherein:the first hot-wire sensor (S6-E) having the first conductive wire (FC1) further comprises a gas-supply main line (LP) having a first bypass line (BP) connected fluidically to said gas-supply main line (LP) upstream and downstream from said first conductive wire (FC1), as seen in the direction of circulation of the gas in the main line (LP), andat least a first solenoid valve (EV1) is arranged in the area of the upstream connection of the first bypass line (BP) to said main line (LP) in such a way as to direct the gaseous flow containing the xenon either to the main line (LP), on which said first conductive wire (FC1) is arranged, or to the first bypass line (BP). 2. The apparatus of claim 1, wherein the gas-supply main line (LP) and the first bypass line (BP) are ramifications of a second bypass line (S1, S3, S5) communicating fluidically with the main circuit (CP), and in that the first solenoid valve (EV1) is arranged at the intersection of said second bypass line (S1, S3, S5), the gas-supply main line (LP) and the first bypass line (BP), and the connection of the second bypass line (S1, S3, S5) to the main circuit (CP) is made on the inhalation branch (16) and/or on the exhalation branch (18) and/or at a site located in immediate proximity to the patient's mouth. 3. The apparatus of claim 2, wherein the connection of the second bypass line (S1, S3, S5) to the main circuit (CP) is made in the area of a connection site (17) between the inhalation branch (16) and the exhalation branch (18) of said main circuit (CP). 4. The apparatus of claim 3, wherein at least a second solenoid valve (EV2) is arranged in the area of the downstream connection of the first bypass line (BP) to said main line (LP). 5. The apparatus of claim 4, wherein at least a second sensor with conductive wire (FC2) is arranged on the first bypass line (BP) and measures the xenon concentration, during the exhalation phase, while the first conductive wire (FC1) measures the concentration during the inhalation phase, or vice versa. 6. The apparatus of claim 5, wherein the first and second solenoid valves (EV1, EV2) are controlled by control means (3) or by an independent interface. 7. The apparatus of claim 3, wherein at least one nonreturn valve (CR) is arranged on the gas-supply main line (LP), between the first conductive wire (FC1) and a downstream connection of the first bypass line (BP) to said main line (LP). 8. The apparatus of claim 7, wherein at least a second sensor with conductive wire (FC2) is arranged on the first bypass line (BP) and measures the xenon concentration, during the exhalation phase, while the first conductive wire (FC1) measures the concentration during the inhalation phase, or vice versa. 9. The apparatus of claim 2, wherein the connection of the second bypass line (S1, S3, S5) to the main circuit (CP) is made in the area of a Y-shaped connector piece or of a bacteriological filter arranged on the main circuit (CP). 10. The apparatus of claim 2, wherein at least a second solenoid valve (EV2) is arranged in the area of the downstream connection of the first bypass line (BP) to said main line (LP). 11. The apparatus of claim 10, wherein at least a second sensor with conductive wire (FC2) is arranged on the first bypass line (BP) and measures the xenon concentration, during the exhalation phase, while the first conductive wire (FC1) measures the concentration during the inhalation phase, or vice versa. 12. The apparatus of claim 11, wherein the first and second solenoid valves (EV1, EV2) are controlled by control means (3) or by an independent interface. 13. The apparatus of claim 2, wherein at least one nonreturn valve (CR) is arranged on the gas-supply main line (LP), between the first conductive wire (FC1) and a downstream connection of the first bypass line (BP) to said main line (LP). 14. The apparatus of claim 13, wherein at least a second sensor with conductive wire (FC2) is arranged on the first bypass line (BP) and measures the xenon concentration, during the exhalation phase, while the first conductive wire (FC1) measures the concentration during the inhalation phase, or vice versa. 15. The apparatus of claim 14, wherein the first and second solenoid valves (EV1, EV2) are controlled by control means (3) or by an independent interface. 16. The apparatus of claim 1, wherein the first hot-wire sensor is arranged directly on the inhalation (16) or exhalation (18) branch of the main circuit (CP), and in that the gas-supply main line (LP) and the bypass line (BP) are ramifications of the inhalation (16) or exhalation (18) branch of the main circuit (CP), and in that the first solenoid valve (EV1) is arranged at the intersection of the inhalation (16) or exhalation (18) branch, the main line (LP) and the first bypass line (BP). 17. The apparatus of claim 16, wherein the first hot-wire sensor is arranged on the inhalation branch (16), upstream or downstream from an inhalation flowrate sensor (11), so as to permit measurement of the inhaled fraction of xenon. 18. The apparatus of claim 16, wherein the first hot-wire sensor is arranged on the exhalation branch (18), upstream or downstream from an exhalation flowrate sensor (12), so as to permit measurement of the exhaled fraction of xenon. 19. The apparatus of claim 1, wherein at least a second solenoid valve (EV2) is arranged in the area of the downstream connection of the first bypass line (BP) to said main line (LP). 20. The apparatus of claim 19, wherein the first and second solenoid valves (EV1, EV2) are controlled by control means (3) or by an independent interface. 21. The apparatus of claim 1, wherein at least one nonreturn valve (CR) is arranged on the gas-supply main line (LP), between the first conductive wire (FC1) and the downstream connection of the first bypass line (BP) to said main line (LP). 22. The apparatus of claim 1, wherein at least a second sensor with conductive wire (FC2) is arranged on the first bypass line (BP) and measures the xenon concentration during the exhalation phase while the first conductive wire (FC1) measures the concentration during the inhalation phase, or vice versa.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (6)
Wallroth Carl F.,DEX ; Scharmer Ernst Gunter,DEX ; Schroder Jurgen, Anesthesia respirator.
Bunke, Claus; Manigel, Jürgen; Panitz, Gerald; Dittmann, Ralf, Apparatus and method for supplying respiratory gas to a patient in which respiratory gas components are metered with great accuracy.
Bathe Duncan P. L. (Madison WI) Kohlmann Thomas S. (McFarland WI) Pinkert John R. (Madison WI) Tham Robert Q. (Middleton WI), Nitric oxide delivery system.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.