GB1459680A - Respirator- - Google Patents
Respirator-Info
- Publication number
- GB1459680A GB1459680A GB1812974A GB1812974A GB1459680A GB 1459680 A GB1459680 A GB 1459680A GB 1812974 A GB1812974 A GB 1812974A GB 1812974 A GB1812974 A GB 1812974A GB 1459680 A GB1459680 A GB 1459680A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- signal
- valve
- inhalation
- lamp
- 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
- A61M16/006—Tidal volume membrane pumps
-
- 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
- A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
-
- 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
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
-
- 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
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/105—Filters
- A61M16/106—Filters in a path
- A61M16/107—Filters in a path in the inspiratory path
-
- 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
- A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
- A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
- A61M2016/0021—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with a proportional output signal, e.g. from a thermistor
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)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
1459680 Respiratory appliances TECNA CORP 25 April 1974 [26 April 1973 4 Oct 1973] 18129/74 Heading A5T A respirator comprises a displacement chamber 61 with a coil 75 deflecting the position of a piston 71 relative to a surface (62) and producing a signal proportional thereto to actuate a valve 57 to control the flow of gas from a supply to the chamber to move the piston 71 against the action of springs (72) away from the surface, the chamber 61 being in communication with a patient airway 154. Compressed air from compressor 12 or reservoir 26 is fed to accumulator 36 of similar construction to chamber 61. An oxygen valve 88 and an air valve 57 are respectively opened and closed to supply compressed oxygen from source 83 to chamber 61 for a selected portion of the travel of piston 71 and air for the remaining portion. A signal from a tidal volume control 196 determining the quantity of gas for a single breathing cycle is fed to an air volume detector 194 with the instantaneous piston 71 position signal representing the volume of chamber 61. A signal from an oxygen to air ratio control 209 is fed to an oxygen volume detector 207 with the piston position signal. A signal from a control 253 for choosing the minimum volume of chamber 61 required to trigger the apparatus is fed to a chamber empty detector 251 with the piston position signal, the detector output 'being sent to an inflation hold timer 257 which delays the onset of the inflation portion of the cycle. When the chamber 61 is at its maximum volume, detector 194 sends a signal to an AND gate (267) with a signal triggered by the selected ratio of exhalation time to inhalation time. The AND gate (267) sends a signal to an inhalation gate (273) with a signal from a respiration rate timer (274), the inhalation gate (273) causing an inhalation valve 106 to open and allow the air and oxygen to pass from chamber 61 to airway 154 and thence to a patient's mask. After a timer (289) times out, inflation of chamher 61 recommences and a valve 179 is energised to largely exhaust a balloon 159 in an exhalation valve 157 so that the patient can exhale. A continuous Train of cycles can be performed. A manual or timed signal connects a deep breathing increment control 203 instead of control 196 to detector 194 so that a larger volume can be inhaled. An integrator (396) ensures the exhalation time exceeds the previous inhalation time, lighting a lamp (418) if this is not so. If the patient reduces the pressure in airway 154 for a sufficient time, he can initiate inhalation. A drop in oxygen pressure adjacent source 83 causes the oxygen to be shut off by valve 57 and a lamp (514) to be lit. A low pressure in airway 154 at the instant of commencement of exhalation lights a lamp (343). Exceeding the desired maximum inhalation pressure ends inhalation and lights a lamp (443). A continuously running timer (474) is normally reset at the end of exhalation, if not reset it times out and lights a lamp (484). Abnormal pressure in airway 154 at the end of expiration lights a lamp (507). A mains failure lights a lamp (526) via an auxiliary supply. All alarm lamps remain lit after being triggered and also trigger a common audible alarm. In a second embodiment (Figs. 10-12B, not shown), a valve (93') opens to admit atmospheric air if the pressure in chamber (61') is too low. A nebuliser (120') is provided and optionally fed by a compressor (124'). The inspiratory flow rate can be varied during a breathing cycle e.g. to decrease the flow rate as inspiration progresses. When a maximum inspiration. pressure is execeeded, a valve (431') exhausts the chamber (61') to atmosphere.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00354673A US3840006A (en) | 1973-04-26 | 1973-04-26 | Respirator |
US403508A US3916888A (en) | 1973-10-04 | 1973-10-04 | Respirator |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1459680A true GB1459680A (en) | 1976-12-22 |
Family
ID=26998514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1812974A Expired GB1459680A (en) | 1973-04-26 | 1974-04-25 | Respirator- |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5031694A (en) |
FR (1) | FR2227021A1 (en) |
GB (1) | GB1459680A (en) |
NL (1) | NL7405591A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1141115B (en) * | 1980-12-04 | 1986-10-01 | Lab Italia Spa X | GAS EVACUATOR, PARTICULARLY FOR INHALATION ANESTHESIA EQUIPMENT |
JPS58179802U (en) * | 1982-05-27 | 1983-12-01 | 株式会社小松製作所 | Electric drive vehicle brake system |
FR2873477A1 (en) * | 2004-07-21 | 2006-01-27 | Milano Carole | Video equipment perceived image quality degrading device for use in e.g. cinema theatre, has light intensity sensor to control powering and isolation of light source that emits light radiation in specific range of wave length |
-
1974
- 1974-04-25 GB GB1812974A patent/GB1459680A/en not_active Expired
- 1974-04-25 JP JP49046048A patent/JPS5031694A/ja active Pending
- 1974-04-25 NL NL7405591A patent/NL7405591A/xx unknown
- 1974-04-26 FR FR7414737A patent/FR2227021A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
NL7405591A (en) | 1974-10-29 |
JPS5031694A (en) | 1975-03-28 |
FR2227021A1 (en) | 1974-11-22 |
AU6828974A (en) | 1975-10-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
PCNP | Patent ceased through non-payment of renewal fee |