GB781747A - Lung ventilating apparatus particularly for administering anaesthetics - Google Patents
Lung ventilating apparatus particularly for administering anaestheticsInfo
- Publication number
- GB781747A GB781747A GB34756/55A GB3475655A GB781747A GB 781747 A GB781747 A GB 781747A GB 34756/55 A GB34756/55 A GB 34756/55A GB 3475655 A GB3475655 A GB 3475655A GB 781747 A GB781747 A GB 781747A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- pressure
- gas
- diaphragm
- rod
- 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
- A61M16/0057—Pumps therefor
- A61M16/0081—Bag or bellow in a bottle
-
- 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
- A61M16/0009—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2496—Self-proportioning or correlating systems
- Y10T137/2544—Supply and exhaust type
- Y10T137/2546—Vacuum or suction pulsator type [e.g., milking machine]
- Y10T137/2549—With trip linkage or snap action
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)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
781,747. Administering anaesthetics. AIRSHIELDS, Inc. Dec. 5, 1955 [Jan. 31, 1955], No. 34756/55. Class 81 (2). A portable lung ventilation apparatus for use in administering anaesthetics and operated by compressed air or gas comprises a chamber 12, Fig. 1, of transparent material, e.g. glass or plastic, in which succeeding phases of position and negative pressure are effected by a bellows 43 and enclosing a flexible bag 17 containing anaesthetic gas and connected by tubes 18, 18a, and an intermediate fitting having a pressuregauge 20 with a two-way valve 21 connected bv a flexible tube 25 to the anaesthesia machine and to a flexible bag 17a also containing anaesthetic gas, and which may be operated manually in the event of failure of the compressed air means operating the bag 17. The duration of the pressure phases in the chamber are controlled by a timing device 50 operated by compressed air or gas, and the magnitude of the positive and negative pressures are maintained at pre-set values by valves 27 and 28 mounted on the chamber, said valves controlling respectively the discharge of air from and the admission of air to the chamber. The timing device comprises superposed sections 56, 57, 58, Figs. 6, 7, having between the sections 56, 57 a chamber 65 and between the sections 57, 58 a chamber divided into compartments 67, 68 by a snap-over diaphragm 69 loaded by an adjustable spring 70. The chamber 65 communicates through an aperture 64 in a fitting 61 controlled by a spring-loaded ball valve 63 and radial ports 62 with a bore 60 connected to a constant pressure gas regulator 53 of known type having a pressure gauge 55 and connected by a pipe 52 with a compressed oxygen tank 51. The chamber 65 also communicates through a pipe 49 with the lower end of a cylinder 48 having a piston with a rod 46 connected to the heavy movable end-plate 45 of the bellows 43, the upper apertured endplate of which is secured to the correspondingly apertured base-plate 16 supporting the chamber 12. The chamber 65 also communicates through a bore 76 in a rod 73 secured to and extending through the diaphragm with the compartment 68, which is open to the atmosphere through a duct 77 in the section 58, and with the compartment 67 through a passage 79 in the section 57 controlled by a needle valve 81. With the diaphragm 69 in the position shown in Fig. 6, the ball valve 63 is displaced from the aperture 64 by the rod 73 and oxygen flows from the tank 51 into the chamber 65 and thence via pipe 49 to the cylinder 48 thus raising the piston rod 46 and closing the bellows 43 and increasing the pressure in the chamber 12, thus forcing gas from the bag 17 to the lungs of a patient. During this time, oxygen bleeds from the chamber 65 through the passage 79 into the chamber 67, the pressure in which builds up until the diaphragm snaps over into the position shown in dotted lines 69a in Fig. 7. At this moment, the rod 73 is raised out of contact with the ball valve which closes on the aperture 64, thus shutting off the flow of oxygen to the chamber 65 the pressure in which falls immediately to atmospheric. The pressure beneath the piston in the cylinder 48 also falls to the same value and the piston descends under the weight of the plate 45 of the bellows which opens and reduces the pressure in the chamber 12 so that the bag 17 expands and withdraws gas from the patient's lungs. During this time, the pressure in the compartment 67 slowly falls until a point is reached at which the diaphragm 69 snaps over into its lower position and by displacing the ball valve from the aperture 64 initiates automatically another positive pressure phase in the chamber 12. The total period of succeeding positive and negative pressures in the chamber is regulated by the needle valve 81, and the length of these phases by the loading on the spring 70. The maximum positive pressure in the chamber 12 is determined by the spring loading on a disc 31, Fig. 3, covering a port 30 in the top of the chamber, while the maximum negative pressure is regulated by a spring-loaded disc 37, Fig. 4, which opens when the pressure in the chamber exceeds a desired value and permits the admission of atmospheric air through a port 36 in the disc chamber and ports 42 in the disc chamber and the top of the chamber 12.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US485229A US2880719A (en) | 1955-01-31 | 1955-01-31 | Lung ventilators and timing devices therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
GB781747A true GB781747A (en) | 1957-08-21 |
Family
ID=23927399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34756/55A Expired GB781747A (en) | 1955-01-31 | 1955-12-05 | Lung ventilating apparatus particularly for administering anaesthetics |
Country Status (3)
Country | Link |
---|---|
US (1) | US2880719A (en) |
DE (1) | DE1106457B (en) |
GB (1) | GB781747A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113833902A (en) * | 2021-10-26 | 2021-12-24 | 宣博精工科技(南通)有限公司 | Valve component of hydrogen energy automobile hydrogen storage device |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3058460A (en) * | 1957-01-08 | 1962-10-16 | Stephenson Corp | Method and apparatus for supplying and exhausting or exchanging a controlled volume of gas |
US3057346A (en) * | 1958-07-09 | 1962-10-09 | Stephenson Corp | Apparatus for selectively providing controlled breathing or assisted breathing |
DE1250057B (en) * | 1958-07-16 | 1968-03-21 | West Haven Conn Frederick Franz (V St A) | Ventilator |
US3068857A (en) * | 1958-11-19 | 1962-12-18 | British Oxygen Co Ltd | Apparatus for controlling or assisting respiration |
US3088456A (en) * | 1960-02-08 | 1963-05-07 | Philip L Stanton | Anesthetizing and gas therapy apparatus |
US3307542A (en) * | 1963-02-05 | 1967-03-07 | Air Shields | Lung ventilating equipment |
DE1270225B (en) * | 1963-02-07 | 1968-06-12 | Air Shields | Lung ventilator |
FR2297639A1 (en) * | 1975-01-20 | 1976-08-13 | Minerve Sa | VOLUMETRIC RESPIRATOR, IN PARTICULAR FOR ASSISTED ANESTHESIA AND LONG-TERM RESUSCITATION |
US5072729A (en) * | 1986-11-04 | 1991-12-17 | Bird Products Corporation | Ventilator exhalation valve |
EP0282675A3 (en) * | 1986-11-04 | 1990-01-03 | Bird Products Corporation | Flow control valve for a medical ventilator |
US5474062A (en) * | 1987-11-04 | 1995-12-12 | Bird Products Corporation | Medical ventilator |
EP1205203B1 (en) * | 1994-10-14 | 2004-09-29 | Bird Products Corporation | Exhalation valve with flow transducer |
US5676133A (en) * | 1995-06-14 | 1997-10-14 | Apotheus Laboratories, Inc. | Expiratory scavenging method and apparatus and oxygen control system for post anesthesia care patients |
US5662099A (en) * | 1996-03-29 | 1997-09-02 | Ohmeda Inc. | Detection of bellows collapsed condition in medical ventilator |
US6135967A (en) * | 1999-04-26 | 2000-10-24 | Fiorenza; Anthony Joseph | Respiratory ventilator with automatic flow calibration |
US6240919B1 (en) | 1999-06-07 | 2001-06-05 | Macdonald John J. | Method for providing respiratory airway support pressure |
CN105597210B (en) * | 2016-02-25 | 2018-05-11 | 深圳市诺然美泰科技股份有限公司 | The anesthesiaing system of compatible ascending manner and descending manner bellows breathing circuit |
US11717634B2 (en) | 2018-10-02 | 2023-08-08 | MaxxO2, LLC | Therapeutic oxygen breathing apparatus and exercise system |
CN112587776B (en) * | 2021-01-10 | 2021-08-13 | 郑州澍青医学高等专科学校 | Artificial respiration device for clinical medicine based on data acquisition |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2223570A (en) * | 1937-12-31 | 1940-12-03 | Robert M Mcmillin | Apparatus for producing artificial respiration |
US2498483A (en) * | 1945-09-20 | 1950-02-21 | Westinghouse Air Brake Co | Safety control apparatus |
GB649229A (en) * | 1948-11-11 | 1951-01-24 | John Henry Blease | Improvements in apparatus for the control of respiration, resuscitation and anaesthesia |
US2582210A (en) * | 1949-07-05 | 1952-01-08 | E & J Mfg Co | Apparatus for positive respiration during gas anesthesia |
US2699163A (en) * | 1950-06-26 | 1955-01-11 | Carl-Gunnar D Engstrom | Respirator |
US2737178A (en) * | 1952-12-15 | 1956-03-06 | E & J Mfg Co | Breathing machine |
DE929637C (en) * | 1953-04-04 | 1955-06-30 | Draegerwerk Ag | Device for artificial respiration, preferably for anesthetic purposes |
-
1955
- 1955-01-31 US US485229A patent/US2880719A/en not_active Expired - Lifetime
- 1955-12-05 GB GB34756/55A patent/GB781747A/en not_active Expired
-
1956
- 1956-01-26 DE DEA24188A patent/DE1106457B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113833902A (en) * | 2021-10-26 | 2021-12-24 | 宣博精工科技(南通)有限公司 | Valve component of hydrogen energy automobile hydrogen storage device |
CN113833902B (en) * | 2021-10-26 | 2022-05-06 | 宣博精工科技(南通)有限公司 | Valve component of hydrogen energy automobile hydrogen storage device |
Also Published As
Publication number | Publication date |
---|---|
DE1106457B (en) | 1961-05-10 |
US2880719A (en) | 1959-04-07 |
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