GB1466620A - Method and apparatus for controlling the pressure variation of a respirator - Google Patents
Method and apparatus for controlling the pressure variation of a respiratorInfo
- Publication number
- GB1466620A GB1466620A GB4468274A GB4468274A GB1466620A GB 1466620 A GB1466620 A GB 1466620A GB 4468274 A GB4468274 A GB 4468274A GB 4468274 A GB4468274 A GB 4468274A GB 1466620 A GB1466620 A GB 1466620A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blood
- pulse
- timing
- valve
- patient
- 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.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
- A61M2016/0039—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the inspiratory circuit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2230/00—Measuring parameters of the user
- A61M2230/04—Heartbeat characteristics, e.g. ECG, blood pressure modulation
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Percussion Or Vibration Massage (AREA)
Abstract
1466620 Artificial respiration F HOFFMANN-LA-ROCHE & CO AG 15 Oct 1974 [21 Nov 1973] 44682/74 Heading A5T A device, used in conjunction with respiration apparatus, for reducing the pressure of the gas supplied to a patient during the propagation period of a blood-pulse wave in the pulmonary alveolar blood-flow path comprises timing means which respond to blood-pulsesynchronised electrical signals, and pressurecontrol means controlled by said timing means to operate during said propagation period. In a first embodiment (Fig. 1) blood-pulsesynchronised electrical signals are generated by an electracardiograph 8 and fed to a timing circuit 9. The blood-pulse-synchronised signal triggers a first timing signal having a duratior correspondng to the length of time required for said blood-pulse wave to reach the pulmon ary alveolar blood system. The termination of the first timing signal triggers a second timing signal !having a duration corresponding to said blood-pulse-wave propagation period. The second timing signal is fed from timing circuit 9 to an amplifier 10 and is then used to oper. ate the pressure-control means whch comprises a two-way valve 4 in a gas duct 3 connecting a respirator 2 with a patient 1. When the valve 4 is in position I (Fig. 1) the lungs of the patient are connected with the resiprator 2 For the duration of the second timing signal the valve 4 is in position II (Fig. 1), the lungs of the patient then being in communication with the ambient atmosphere, thus causing a pressure decrease in the lungs. Termination of the second timing signal returns the valve 4 to position I. Instead of connecting the lungs of the patient to the ambient atmosphere during the second timing pulse, a vacuum chamber 18 and/or pump 19 may alternatively be used. In a second embodiment (Fig. 4, not shown) the valve 4 is replaced by a pump (20) which draws gas from the duct between the patient and the respirator for the duration of the second timing signal and returns said gas at the end of said signal. In a third embodiment (Fig. 5 not shown) the respiratory frequency is controlled by the heart-beat frequency. The respirator in this embodiment comprises a source (21) of gas at elevated pressure, a valve (22) for regulating flow of gas and a pneumatic switch (23) which discharges exhaled air. Blood-pulse-synchronised signals are fed via conductor (31) to control device (28) which operates valve (22) to give inhalation and exhalation times which are multiples of the heart-beat period and which generates timing pulses to operate valve (22) during said blood-pulse-wave propagationperiod. A measuring head (26) generates signals, representing gas flow and/or pressure, which are fed to control device (28) which controls these parameters to set levels. An embodiment is described in which the patient (an infant) is subjected to an overall constant pressure which is reduced for the duration of said blood-pulse-wave propagation-period. The blood-pulse-synchronised signal may be obtained by direct or indirect means for determining stresses of the heart or blood pressure, flow, flow velocity or flow acceleration. In all the embodiments described the duration of both the first and the second timing signals are variable for use with different patients or blood-pulse-signal generating means. Specification 1432572 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1642973A CH571868A5 (en) | 1973-11-21 | 1973-11-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1466620A true GB1466620A (en) | 1977-03-09 |
Family
ID=4417296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4468274A Expired GB1466620A (en) | 1973-11-21 | 1974-10-15 | Method and apparatus for controlling the pressure variation of a respirator |
Country Status (7)
Country | Link |
---|---|
US (1) | US3923055A (en) |
JP (1) | JPS5830059B2 (en) |
CH (1) | CH571868A5 (en) |
DE (1) | DE2454330C2 (en) |
FR (1) | FR2251340B1 (en) |
GB (1) | GB1466620A (en) |
NL (1) | NL175702C (en) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1585091A (en) * | 1976-02-10 | 1981-02-25 | Venegas J G | Remedial apparatus for use in assisting the breathing of living creatures |
US4203434A (en) * | 1978-04-05 | 1980-05-20 | Brooks Lula M | Timing assembly for oxygen respiration units |
SE430213B (en) * | 1981-03-10 | 1983-10-31 | Siemens Elema Ab | RESPIRATOR INTENDED TO BE CONNECTED TO THE HUMAN OR ANIMAL PATIENTS |
US5007420A (en) * | 1981-08-10 | 1991-04-16 | Bird F M | Ventilator having an oscillatory inspiratory phase and method |
JPS59101159A (en) * | 1982-11-30 | 1984-06-11 | 泉工医科工業株式会社 | Artificial respirator having double-barreled jet pipe |
GB2194892B (en) * | 1986-03-31 | 1990-05-09 | Puritan Bennett Corp | Computer gated positive expiratory pressure system |
US5150291A (en) * | 1986-03-31 | 1992-09-22 | Puritan-Bennett Corporation | Respiratory ventilation apparatus |
US4915103A (en) * | 1987-12-23 | 1990-04-10 | N. Visveshwara, M.D., Inc. | Ventilation synchronizer |
US5020516A (en) * | 1988-03-31 | 1991-06-04 | Cardiopulmonary Corporation | Circulatory assist method and apparatus |
US5020528A (en) * | 1990-05-30 | 1991-06-04 | Myers Phillip R | Method and apparatus for permitting medical personnel to attend to a patient situated in a hazardous location remote therefrom |
US5133346A (en) * | 1990-12-03 | 1992-07-28 | Arvee Medical, Incorporated | Apnea monitor data system |
US5377671A (en) * | 1991-04-26 | 1995-01-03 | Cardiopulmonary Corporation | Cardiac synchronous ventilation |
US5335650A (en) * | 1992-10-13 | 1994-08-09 | Temple University - Of The Commonwealth System Of Higher Education | Process control for liquid ventilation and related procedures |
US5899203A (en) * | 1992-12-24 | 1999-05-04 | Defares; Peter Bernard | Interactive respiratory regulator |
DE9406407U1 (en) * | 1994-04-18 | 1995-08-17 | Schneider Peter | Oxygen therapy device |
US5931160A (en) * | 1995-12-08 | 1999-08-03 | Cardiopulmonary Corporation | Ventilator control system and method |
US6158432A (en) * | 1995-12-08 | 2000-12-12 | Cardiopulmonary Corporation | Ventilator control system and method |
US6463930B2 (en) | 1995-12-08 | 2002-10-15 | James W. Biondi | System for automatically weaning a patient from a ventilator, and method thereof |
DE29622321U1 (en) * | 1996-12-21 | 1997-03-06 | Medicap Medizintechnik Gmbh | Device for dosed gas supply to users |
DE19716166A1 (en) * | 1997-04-18 | 1998-10-22 | Meier Bernd Horst Dr | Artificial respiration machine |
US6962155B1 (en) * | 1999-07-30 | 2005-11-08 | Universite De Montreal | Target drive ventilation gain controller and method |
WO2005079897A1 (en) * | 2004-02-25 | 2005-09-01 | Resmed Limited | Cardiac monitoring and therapy using a device for providing pressure treatment of sleep disordered breathing |
US20090118580A1 (en) * | 2004-07-02 | 2009-05-07 | Wei-Zen Sun | Image-type intubation-aiding device |
US20080202519A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting mandatory mechanical ventilation parameters based on patient physiology |
US20080202520A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting mandatory mechanical ventilation parameters based on patient physiology |
US20080202522A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting mandatory mechanical ventilation parameters based on patient physiology |
US20080202518A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting mandatory mechanical ventilation parameters based on patient physiology |
US20080202517A1 (en) * | 2007-02-23 | 2008-08-28 | General Electric Company | Setting madatory mechanical ventilation parameters based on patient physiology |
US20080230060A1 (en) * | 2007-03-23 | 2008-09-25 | General Electric Company | Setting inspiratory time in mandatory mechanical ventilation based on patient physiology, such as when tidal volume is inspired |
US20080230064A1 (en) * | 2007-03-23 | 2008-09-25 | General Electric Company | Setting inspiratory time in mandatory mechanical ventilation based on patient physiology, such as when forced inhalation flow ceases |
US20080230061A1 (en) * | 2007-03-23 | 2008-09-25 | General Electric Company | Setting expiratory time in mandatory mechanical ventilation based on a deviation from a stable condition of end tidal gas concentrations |
US20080230063A1 (en) * | 2007-03-23 | 2008-09-25 | General Electric Company | Setting inspiratory time in mandatory mechanical ventilation based on patient physiology, such as forced inhalation time |
US8402970B2 (en) * | 2008-03-14 | 2013-03-26 | General Electric Company | System and method for integrated high frequency oscillatory ventilation |
TW201012429A (en) * | 2008-09-19 | 2010-04-01 | Univ Nat Taiwan | Endoscope examination system |
CN105688316B (en) * | 2015-12-31 | 2018-05-01 | 台培春 | A kind of new filter oxygen breathing equipment of Emergence |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3212496A (en) * | 1962-08-21 | 1965-10-19 | United Aircraft Corp | Molecular physiological monitoring system |
US3452739A (en) * | 1966-08-15 | 1969-07-01 | Avco Corp | Heart pump synchronizing apparatus |
US3587562A (en) * | 1968-02-01 | 1971-06-28 | Becton Dickinson Co | Physiological monitoring system |
DE1766589B1 (en) * | 1968-06-19 | 1971-08-05 | Heyer Gmbh Carl | Ventilator |
US3730173A (en) * | 1970-02-02 | 1973-05-01 | Ahldea Corp | Stimulation method and apparatus for attempting to return a physiological parameter of a patient to normal |
-
1973
- 1973-11-21 CH CH1642973A patent/CH571868A5/xx not_active IP Right Cessation
-
1974
- 1974-09-26 NL NLAANVRAGE7412720,A patent/NL175702C/en not_active IP Right Cessation
- 1974-10-15 GB GB4468274A patent/GB1466620A/en not_active Expired
- 1974-11-15 DE DE2454330A patent/DE2454330C2/en not_active Expired
- 1974-11-15 US US524172A patent/US3923055A/en not_active Expired - Lifetime
- 1974-11-18 FR FR7437926A patent/FR2251340B1/fr not_active Expired
- 1974-11-20 JP JP49133489A patent/JPS5830059B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5085195A (en) | 1975-07-09 |
CH571868A5 (en) | 1976-01-30 |
NL175702B (en) | 1984-07-16 |
DE2454330A1 (en) | 1975-05-22 |
US3923055A (en) | 1975-12-02 |
DE2454330C2 (en) | 1984-07-19 |
FR2251340A1 (en) | 1975-06-13 |
FR2251340B1 (en) | 1978-03-24 |
NL175702C (en) | 1984-12-17 |
NL7412720A (en) | 1975-05-23 |
JPS5830059B2 (en) | 1983-06-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |