GB437709A - Improvements in or relating to apparatus for artificial respiration - Google Patents
Improvements in or relating to apparatus for artificial respirationInfo
- Publication number
- GB437709A GB437709A GB1022635A GB1022635A GB437709A GB 437709 A GB437709 A GB 437709A GB 1022635 A GB1022635 A GB 1022635A GB 1022635 A GB1022635 A GB 1022635A GB 437709 A GB437709 A GB 437709A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pressure
- compartment
- valves
- housing
- 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
-
- 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
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)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
437,709. Valves. SVENSKA AKTIEBOLAGET GASACCUMULATOR, Lidingo, near Stockholm. April 2, 1935, No. 10226. Convention date, April 5, 1934. [Class 135] [See also Group VI] Artificial respiration apparatus particularly for use during chest operations, comprises a gas cylinder 1 connected through a reducing valve 2, a pressure governor 3, and equalizer 4, and a conduit 5 having a throttle control 6, to a valve housing 7, containing a main supply valve 8, and, in a separate compartment 7<c> a main escape valve 9. The housing 7 is connected by a pipe 17 to a housing 18 for a valve 29 itself connected by a pipe 31 and a mouthpiece 32 with the lungs 33. The mouthpiece 32 is connected by a pipe 35 to a housing 20 for a valve 22 and thence by a pipe 19 to the compartment 7<c>. The valves 29, 22 are actuated by diaphragms 23<a>, 24<a>, adjustably spring-loaded to respond respectively to a predetermined minimum lung-pressure, slightly above atmospheric, and a predetermined maximum lung-pressure, the diaphragm compartments 23, 24 being connected by pipes 36, 34 with the pipes 35, 31 respectively. The main valves 8, 9 are interconnected by a spindle 12 passing into a compartment 10 communicating with housing 7 by a non-return valve 13. The compartment 10 contains a throw - over mechanism, comprising interconnected levers 50, 51 connected to the spindle 12 and through a spring 52 with a diaphragm 53, and communicates with atmosphere through a pipe 14 having an adjustable throttle 15. In use gas passes into housing 7 at a rate determined by the setting of throttle 6, passes through valves 8 and 29 and inflates the lungs. The rising pressure acting through pipe 34 causes valve 22 to open, valve 9 remaining closed. The maximum lung pressure when reached acts through pipes 35 and 36 to close valve 29, thus terminating inhalation; thereafter pressure building up in housing 7 opens valve 13 (which is suitably loaded), and gas flowing into compartment 10 actuates the throw-over mechanism 11 to close valve 8 and open valve 9 thus permitting air to escape from the lungs. With falling pressure, valve 29 is opened (valve 8 remaining closed), and finally valve 22 is closed, thus terminating exhalation ; pressure in compartment 10 falls at a rate regulated by throttle 15 until mechanism 11 returns valves 8 and 9 to the position shown, thus completing the cycle. In order to synchronize the apparatus with the patient's breathing after irregularities such as spasmodic inhalations or coughs, the valve 22 is connected to the diaphragm 24a through a lever 47, one end of which is connected to a valve 46 controlling an outlet 48 from the compartment 10, the valve being opened subsequent to the closing of valve 22. A spasmodic inhalation when valves 22 and 9 are open reduces the pressure in pipes 31, 34, closes valve 22, opens valve 46 and empties compartment 10 thus causing mechanism 11 to close valve 9, open valve 8 and commence an inhalation phase ; on the other hand a cough during an inhalation phase closes valve 29 and opens valve 22 by the pressure impulses transmitted through pipes 35, 36 and 31, 34, valve 46 being simultaneously closed if open ; closure of valve 29 results in change over of valves 8, 9, as described above. To enable the apparatus to be used for resuscitation, levers 42, 43 are provided, operation of which controllably increases the loading of valve 29 by a spring 44 and holds valve 22 permanently open, the action of valve 46 being unaffected ; the apparatus then works between a higher maximum, and atmospheric, pressure. The levers 42, 43 may be held in desired position by ratchet mechanism.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE437709X | 1934-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB437709A true GB437709A (en) | 1935-11-04 |
Family
ID=20309938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1022635A Expired GB437709A (en) | 1934-04-05 | 1935-04-02 | Improvements in or relating to apparatus for artificial respiration |
Country Status (2)
Country | Link |
---|---|
US (1) | US2121311A (en) |
GB (1) | GB437709A (en) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2418034A (en) * | 1943-05-29 | 1947-03-25 | Gen Electric X Ray Corp | Respiration apparatus |
US2567224A (en) * | 1943-08-17 | 1951-09-11 | Mckee | Oxygen administration system |
US2439016A (en) * | 1943-10-19 | 1948-04-06 | Scott Aviation Corp | Breathing apparatus |
US2436853A (en) * | 1944-04-10 | 1948-03-02 | Edwin D Coleman | Respiration apparatus |
US2567225A (en) * | 1944-04-14 | 1951-09-11 | Albert E Mckee | Oxygen administration |
US2593046A (en) * | 1944-05-29 | 1952-04-15 | Albert E Mckee | Oxygen administration |
US2453475A (en) * | 1945-09-14 | 1948-11-09 | Cornelius A Tobias | Resuscitation apparatus |
US2770232A (en) * | 1954-05-26 | 1956-11-13 | Smith Welding Equipment Corp | Respirator system |
US3033195A (en) * | 1957-09-16 | 1962-05-08 | Air Reduction | Respirator apparatus and method |
US3225758A (en) * | 1959-12-30 | 1965-12-28 | Morch Ernst Trier | Piston type respirator |
US3138152A (en) * | 1962-07-03 | 1964-06-23 | Mine Safety Appliances Co | Positive pressure breathing apparatus |
US3396725A (en) * | 1964-01-17 | 1968-08-13 | Drager Otto H | Respirator with negative pressure limiting valve |
US3362404A (en) * | 1964-11-16 | 1968-01-09 | Bennett Respiration Products I | Respiration apparatus for administering intermittent positive pressure breathing therapy |
US3349796A (en) * | 1965-03-17 | 1967-10-31 | Scholin | Fluid flow control unit |
US3434471A (en) * | 1966-04-06 | 1969-03-25 | Smithkline Corp | Therapeutic intermittent positive pressure respirator |
US3610236A (en) * | 1966-11-22 | 1971-10-05 | Globe Safety Products Inc | Resuscitator device |
SE389020B (en) * | 1973-11-13 | 1976-10-25 | Aga Ab | DEVICE FOR VENTILATION OF A PATIENT THROUGH A LUNG FAN |
US3949749A (en) * | 1974-02-24 | 1976-04-13 | Bio-Med Devices Inc. | Pediatric respirator |
US3903881A (en) * | 1974-04-12 | 1975-09-09 | Bourns Inc | Respirator system and method |
USRE29778E (en) * | 1974-06-07 | 1978-09-26 | Bio-Med Devices, Inc. | Pediatric respirator |
US3985131A (en) * | 1974-11-20 | 1976-10-12 | Searle Cardio-Pulmonary Systems Inc. | Infant and pediatric ventilator |
FR2297639A1 (en) * | 1975-01-20 | 1976-08-13 | Minerve Sa | VOLUMETRIC RESPIRATOR, IN PARTICULAR FOR ASSISTED ANESTHESIA AND LONG-TERM RESUSCITATION |
US4007736A (en) * | 1975-03-12 | 1977-02-15 | N.A.D., Inc. | Fluidic controlled ventilator |
US4020834A (en) * | 1975-05-16 | 1977-05-03 | Bird F M | Respirator and method |
US4041943A (en) * | 1975-08-25 | 1977-08-16 | Miller Bruce B | Control apparatus for variable regulation of lung inflation hold time |
US4054133A (en) * | 1976-03-29 | 1977-10-18 | The Bendix Corporation | Control for a demand cannula |
US4207884A (en) * | 1976-12-20 | 1980-06-17 | Max Isaacson | Pressure controlled breathing apparatus |
IT1096151B (en) * | 1978-03-16 | 1985-08-17 | Savelli Aulo | AUTOMATIC ARTIFICIAL RESPIRATOR, IN PARTICULAR FOR RESUSCITATION ROOMS AND FOR ANESTHESIA |
US4284075A (en) * | 1978-06-17 | 1981-08-18 | Alan Krasberg | Diving headgear for use in return-line diving systems |
USRE31785E (en) * | 1978-08-07 | 1985-01-01 | Figgie International, Inc. | Breathing valve assembly with diaphragm control of the exhaust ports |
GB9000371D0 (en) * | 1990-01-08 | 1990-03-07 | Neotronics Medical Ltd | Breathing apparatus |
IT1304345B1 (en) * | 1998-02-20 | 2001-03-15 | Htm Sport Spa | DISPENSER WITH BY-PASS |
EP0997168A1 (en) * | 1998-10-23 | 2000-05-03 | IMT Technologies Limited | Inspiratory muscle training device with variable loading |
-
1935
- 1935-04-01 US US1399635 patent/US2121311A/en not_active Expired - Lifetime
- 1935-04-02 GB GB1022635A patent/GB437709A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2121311A (en) | 1938-06-21 |
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