[특허]Leak determination in a breathing assistance system

Leak determination in a breathing assistance system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-011/00 A61M-016/00 A61M-016/08 A61M-016/04 A61M-016/06 A61M-016/20
출원번호	US-0570106 (2014-12-15)
등록번호	US-9254369 (2016-02-09)
발명자 / 주소	Jourdain, Cedric Bernadet, Olivier
출원인 / 주소	COVIDIEN LP
대리인 / 주소	Merchant & Gould, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 229

초록 ▼

Systems and methods for estimating a leak flow in a breathing assistance system including a ventilation device connected to a patient are provided. Data of a flow waveform indicating the flow of gas between the ventilation device and the patient is accessed. A specific portion of the flow waveform is identified, and a linear regression of the identified portion of the flow waveform is performed to determine an estimated leak flow in the breathing assistance system.

대표청구항 ▼

1. A breathing assistance system including a ventilation device for delivering respiratory gases to a patient, the breathing assistance system having a controller for estimating a leak flow by: monitoring a flow of gas between the ventilation device and the patient, wherein the monitored flow of gas is represented by a flow waveform;determining a first representative flow rate for a first period of the flow waveform;determining a second representative flow rate for at least a second period of the flow waveform;defining a steady phase portion of the flow waveform to include the first period and the second period when the second representative flow rate varies from the first representative flow rate by less than a predetermined amount; andperforming an interpolation of the steady phase portion of the flow waveform to determine an estimated leak flow. 2. The breathing assistance system according to claim 1, in response to determining the estimated leak flow, the controller is further configured to control at least one of one or more operational parameters of the breathing assistance system. 3. The breathing assistance system according to claim 1, further comprising: identifying a specific portion of the flow waveform comprising the first period and the second period by determining that a flow variation in the flow waveform falls within a predetermined variation threshold. 4. The breathing assistance system according to claim 1, further comprising: determining a third representative flow rate for a third period of the flow waveform; anddefining the steady phase portion to include the first period, the second period, and the third period when the third representative flow rate varies from the first representative flow rate by less than the predetermined amount. 5. The breathing assistance system according to claim 1, wherein the second period immediately precedes the first period. 6. The breathing assistance system according to claim 4, wherein the third period immediately precedes the second period, and wherein the second period immediately precedes the first period. 7. The breathing assistance system according to claim 1, further comprising: determining a third representative flow rate for a third period of the flow waveform; anddefining the steady phase portion to include the first period and the second period when the third representative flow rate varies from the first representative flow rate by more than the predetermined amount. 8. The breathing assistance system according to claim 1, wherein the interpolation is linear regression. 9. A method for estimating a leak flow in a breathing assistance system including a ventilation device connected to a patient, the method comprising: monitoring a flow of gas between the ventilation device and the patient, wherein the monitored flow of gas is represented by a flow waveform;determining a first representative flow rate for a first period of the flow waveform;determining a second representative flow rate for at least a second period of the flow waveform;defining a steady phase portion of the flow waveform to include the first period and the second period when the second representative flow rate varies from the first representative flow rate by less than a predetermined amount; andperforming an interpolation of the steady phase portion of the flow waveform to determine an estimated leak flow in the breathing assistance system. 10. The method according to claim 9, further comprising: in response to determining the estimated leak flow, controlling at least one operational parameter of the ventilation device. 11. The method according to claim 9, wherein identifying the specific portion of the flow waveform comprises: determining that the steady phase portion of the flow waveform has a flow variation within a predetermined variation threshold. 12. The method according to claim 9, further comprising: determining a third representative flow rate for a third period of the flow waveform; anddefining the steady phase portion to include the first period, the second period, and the third period when the third representative flow rate varies from the first representative flow rate by less than the predetermined amount. 13. The method according to claim 9, wherein the second period immediately precedes the first period. 14. The method according to claim 12, wherein the third period immediately precedes the second period, and wherein the second period immediately precedes the first period. 15. The method according to claim 9, further comprising: determining a third representative flow rate for a third period of the flow waveform; anddefining the steady phase portion to include the first period and the second period when the third representative flow rate varies from the first representative flow rate by more than the predetermined amount. 16. The method according to claim 9, wherein the interpolation is linear regression. 17. A ventilation device comprising: at least one processor; andat least one memory storing computer-readable instructions that when executed by the at least one processor cause the ventilation device to: monitor a flow of gas between the ventilation device and the patient, wherein the monitored flow of gas is represented by a flow waveform;determine a first representative flow rate for a first period of the flow waveform;determine a second representative flow rate for at least a second period of the flow waveform;define a steady phase portion of the flow waveform to include the first period and the second period when the second representative flow rate varies from the first representative flow rate by less than a predetermined amount; andperform an interpolation of the steady phase portion of the flow waveform to determine an estimated leak flow in the ventilation device. 18. The ventilation device according to claim 17, the computer-readable instructions further causing the ventilation device to: in response to determining the estimated leak flow, control at least one of one or more operational parameters of the ventilation device. 19. The ventilation device according to claim 17, the computer-readable instructions further causing the ventilation device to: determine a third representative flow rate for a third period of the flow waveform; anddefine the steady phase portion to include the first period, the second period, and the third period when the third representative flow rate varies from the first representative flow rate by less than the predetermined amount. 20. The ventilation device according to claim 19, wherein the third period immediately precedes the second period, and wherein the second period immediately precedes the first period.

이 특허에 인용된 특허 (229)

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Estes Mark C. (Irwin PA) Cattano Janice M. (Gibsonia PA), Sleep apnea treatment apparatus.
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Estes Mark C. ; Cattano Janice M., Sleep apnea treatment apparatus.
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Estes, Mark C.; Cattano, Janice M., Sleep apnea treatment apparatus.
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Estes,Mark C.; Cattano,Janice M., Sleep apnea treatment apparatus.
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Mark C. Estes ; Janice M. Cattano, Sleep apnea treatment apparatus.
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Estes Mark C. (Irwin PA) Cattano Janice M. (Gibsonia PA) Mechlenburg Douglas M. (Pittsburgh PA), Sleep apnea treatment apparatus having multiple ramp cycles.
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Estes Mark C. ; Cattano Janice M., Sleep apnea treatment apparatus with a therapy delay circuit arrangement.
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Estes Mark C. ; Cattano Janice M., Sleep apnea treatment apparatus with minimum leakage assurance circuit.
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Estes Mark C. (Irwin PA) Cattano Janice M. (Gibsonia PA), Sleep apnea treatment apparatus with reset circuitry.
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Estes Mark C. ; Cattano Janice M., Sleep apnea treatment apparatus with reset feature.
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Winter David P., Spring piloted safety valve with jet venturi bias.
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Winter David P., Spring piloted safety valve with jet venturi bias.
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Winter David P., Spring piloted safety valve with jet venturi bias.
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Babkes Mitch ; Ranford Alan B. ; Yaeger Kurt E., Sputum trap manifold with nested caps.
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Froehlich James P. (Berlin PA) Mitchell Joseph N. (Rockwood PA) Jones Stephen M. (Turtle Creek PA), Standby control for CPAP apparatus.
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Jones Michael B. (Excelsior MN), Steering wheel control attachment apparatus.
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Schlawin Craig ; Lura David B., Switch overlay in a piston ventilator.
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Isaza Fernando J., System and method for adjustable disconnection sensitivity for disconnection and occlusion detection in a patient venti.
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Isaza, Fernando J.; Wong, Stanley; Verona, Itzhak; Doyle, Peter, System and method for adjustable disconnection sensitivity for disconnection and occlusion detection in a patient ventilator.
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Isaza,Fernando J.; Wong,Stanley Y.; Doyle,Peter, System and method for adjustable disconnection sensitivity for disconnection and occlusion detection in a patient ventilator.
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Isaza Fernando J. ; Wong Stanley Y., System and method for closed loop airway pressure control during the inspiratory cycle of a breath in a patient ventilat.
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Isaza Fernando J. (San Marcos CA) Wong Stanley Y. (Oceanside CA), System and method for controlling a periodically actuated ventilation flow system.
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Charles L. Wallace ; Warren G. Sanborn ; David Arnett ; Howard L. Ferguson ; Jay Butterbrodt, System and method for controlling the start up of a patient ventilator.
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Wallace Charles L. ; Sanborn Warren G. ; Arnett David ; Ferguson Howard L. ; Butterbrodt Jay, System and method for controlling the start up of a patient ventilator.
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Jafari,Mehdi Matthew, System and method for estimating oxygen concentration in a mixed gas experiencing pressure fluctuations.
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Kimm Gardner J. (Carlsbad CA) Gee Glen N. (Encinitas CA) Fennema Paul J. (Fallbrook CA) Sanborn Warren G. (Escondido CA), System and method for flow triggering of breath supported ventilation.
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Kimm Gardner J. (Carlsbad CA) Gee Glen N. (Encinitas CA) Fennema Paul J. (Fallbrook CA) Sanborn Warren G. (Escondido CA), System and method for flow triggering of pressure supported ventilation.
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Kimm Gardner J. (Carlsbad CA) Gee Glen N. (Encinitas CA) Fennema Paul J. (Fallbrook CA) Sanborn Warren G. (Escondido CA), System and method for flow triggering of pressure supported ventilation by comparison of inhalation and exhalation flow.
상세보기
Gilman, John; Halsey, Eric F.; Raymer, Michael E., System and method for graphic creation of a medical logical module in the arden syntax file format.
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Latorraca Gary (San Diego CA), System and method for operating a respirator compressor system under low voltage conditions.
상세보기
Wallace Charles L. ; Sanborn Warren G. ; Arnett David ; Butterbrodt Jay ; Ferguson Howard L. ; Teel H. Clay, System and method for setting and displaying ventilator alarms.
상세보기
Wallace Charles L. ; Sanborn Warren G. ; Arnett David ; Butterbrodt Jay ; Ferguson Howard L. ; Teel H. Clay, System and method for setting and displaying ventilator alarms.
상세보기
Isaza Fernando J., System and method for transient response and accuracy enhancement for sensors with known transfer characteristics.
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Isaza, Fernando J., System and method for transient response and accuracy enhancement for sensors with known transfer characteristics.
상세보기
Isaza, Fernando J., System and method for transient response and accuracy enhancement for sensors with known transfer characteristics.
상세보기
Andrieux, Claude, System and process for supplying respiratory gas under pressure or volumetrically.
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Sanchez, Gabriel; Doyle, Peter; Leone, Kenneth; Cleveland, Donna; Palmer, Marc; Hyde, David, System status display.
상세보기
Perine, Philippe; Gentner, Julien; Desfossez, Benjamin; Nicolazzi, Pascal; Gaudard, Yves; Nadjafizadeh, Hossein, Systems and methods for managing pressure in a breathing assistance system.
상세보기
Farbarik, John M., Systems and methods for providing active noise control in a breathing assistance system.
상세보기
Farbarik, John M., Systems and methods for providing noise leveling in a breathing assistance system.
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Farbarik,John M., Systems and methods for regulating power in a medical device.
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Ross, Christopher G., Tank holder.
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Sinderby, Christer, Target drive ventilation gain controller and method.
상세보기
Figueiredo, David Luis; Davis, Michael K.; Seetharaman, Mahesh K.; Upham, Gail Frances, Three-dimensional waveform display for a breathing assistance system.
상세보기
Graboi, Daniel G.; Hinson, Chester, Tilt sensor for use with proximal flow sensing device.
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McWilliams Roger D. (San Diego CA), Triggering of patient ventilator responsive to a precursor signal.
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Winter, David Phillip; Sanborn, Warren G., Valve body with integral flow meter for an exhalation module.
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Holscher Russell L. (Olathe KS), Valve for use with inhalation/exhalation respiratory phase detection circuit.
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Power John S. (Galway IEX), Ventilator airway fluid collection system.
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Wallace Charles L. ; Sanborn Warren G. ; Arnett David ; Butterbrodt Jay ; Ferguson Howard L., Ventilator breath display and graphic user interface.
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Wallace Charles L. ; Sanborn Warren G. ; Arnett David ; Butterbrodt Jay ; Ferguson Howard L., Ventilator breath display and graphic user interface.
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Wallace, Charles L.; Sanborn, Warren G.; Arnett, David; Butterbrodt, Jay; Ferguson, Howard L., Ventilator breath display and graphic user interface.
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Wallace, Charles L.; Sanborn, Warren G.; Arnett, David; Butterbrodt, Jay; Ferguson, Howard L., Ventilator breath display and graphic user interface.
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Wallace,Charles L.; Sanborn,Warren G.; Arnett,David; Butterbrodt,Jay; Ferguson,Howard L., Ventilator breath display and graphic user interface.
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Wallace,Charles L.; Sanborn,Warren G.; Arnett,David; Butterbrodt,Jay; Ferguson,Howard L., Ventilator breath display and graphic user interface.
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Takabayashi Susumu ; Ellestad Raymond A., Ventilator compressor system having improved dehumidification apparatus.
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Forare Lester (San Diego CA) Fennema Paul (Fallbrook CA) Gagne Roger (Carlsbad CA), Ventilator control system for mixing and delivery of gas.
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Isaza Fernando J. (San Marcos CA) Wong Stanley Y. (Oceanside CA), Ventilator control system that generates, measures, compares, and corrects flow rates.
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Skidmore, John P.; Ross, Christopher, Ventilator display screen with a user interface.
상세보기
Skidmore, John P.; Brecht, Mark; Fissel, Jim, Ventilator display screen with an alarm icon.
상세보기
Kee Kok-Hiong (St. Louis MO) Schneider James G. (St. Louis MO), Ventilator manifold with accessory access port and adaptors therefore.
상세보기
Hansen, Gary, Ventilator with dual gas supply.
상세보기
Hansen,Gary, Ventilator with dual gas supply.
상세보기
Remmers, John E.; Hajduk, Eric A.; Platt, Ronald S., Ventilatory stabilization technology.
상세보기
Remmers,John E.; Hajduk,Eric A.; Platt,Ronald S., Ventilatory stabilization technology.
상세보기
Sanborn, Warren G.; Doyle, Peter R., Work of breathing display for a ventilation system.
상세보기

IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Leak determination in a breathing assistance system 원문보기

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연합인증

Leak determination in a breathing assistance system 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

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