GB1391659A - Alarm system for breathing device - Google Patents
Alarm system for breathing deviceInfo
- Publication number
- GB1391659A GB1391659A GB2648472A GB2648472A GB1391659A GB 1391659 A GB1391659 A GB 1391659A GB 2648472 A GB2648472 A GB 2648472A GB 2648472 A GB2648472 A GB 2648472A GB 1391659 A GB1391659 A GB 1391659A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure chamber
- diaphragm
- switch
- breathing device
- pressure
- 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
- A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Emergency Medicine (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Percussion Or Vibration Massage (AREA)
Abstract
1391659 Alarm system for breathing device SANDOZ Ltd 7 June 1972 [11 June 1971] 26484/72 Heading AST [Also in Division H1] An alarm system for a breathing device comprises a pressure chamber 4 connected at 6 to a gas flow line of the breathing device, an interval timer 8 operating in conjunction with a response mechanism 10 which is responsive to pressure changes in the pressure chamber, and an alarm actuated by irregularly timed pressure changes in the pressure chamber. The response mechanism 10 consists of a flexible diaphragm 14 exposed on one side to the interior of the pressure chamber 4, a ferromagnetic rod 16 displaceable with displacement of the diaphragm, and an interval timer switch 18. The timer switch 18 comprises a pivotable switch arm 24 which may move between a first contact 26 and a second contact 28 of the switch 18, the switch arm being biassed towards the contact 26 by a spring (not shown). The switch arm is moved by a magnetised bar 20 held by magnetic force on the rod 16 so that its position is adjustable. In operation the diaphragm 14 oscillates regularly dependent, for example on the patients breathing. If, however, for some reason the pressure in the chamber 4 becomes greater or less than the normal limits or remains stationary then the switching interval is altered so actuating the alarm via the timer 8. As an alternative to the diaphragm 14, a piston having its working face exposed to the interior of the pressure chamber may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15238571A | 1971-06-11 | 1971-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1391659A true GB1391659A (en) | 1975-04-23 |
Family
ID=22542695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2648472A Expired GB1391659A (en) | 1971-06-11 | 1972-06-07 | Alarm system for breathing device |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS56173305U (en) |
| CA (1) | CA1020646A (en) |
| CH (1) | CH538286A (en) |
| DE (1) | DE2227066C2 (en) |
| FR (1) | FR2140601B1 (en) |
| GB (1) | GB1391659A (en) |
| IT (1) | IT956451B (en) |
| SU (1) | SU526277A3 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2473922A (en) * | 1949-06-21 | Breathing indicator | ||
| FR1329014A (en) * | 1962-04-25 | 1963-06-07 | Intertechnique Sa | Breathing circuit failure detector |
| US3333584A (en) * | 1964-06-18 | 1967-08-01 | Air Shields | Pressure breathing monitor |
| US3566387A (en) * | 1967-11-14 | 1971-02-23 | Mine Safety Appliances Co | Monitoring device for positive pressure breathing apparatus |
-
1972
- 1972-05-31 CH CH803372A patent/CH538286A/en not_active IP Right Cessation
- 1972-06-03 DE DE19722227066 patent/DE2227066C2/en not_active Expired
- 1972-06-07 GB GB2648472A patent/GB1391659A/en not_active Expired
- 1972-06-08 CA CA144,194A patent/CA1020646A/en not_active Expired
- 1972-06-09 FR FR7220764A patent/FR2140601B1/fr not_active Expired
- 1972-06-09 SU SU1795237A patent/SU526277A3/en active
- 1972-06-10 IT IT2553272A patent/IT956451B/en active
-
1981
- 1981-05-29 JP JP7767581U patent/JPS56173305U/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SU526277A3 (en) | 1976-08-25 |
| IT956451B (en) | 1973-10-10 |
| DE2227066A1 (en) | 1972-12-28 |
| FR2140601A1 (en) | 1973-01-19 |
| CA1020646A (en) | 1977-11-08 |
| CH538286A (en) | 1973-06-30 |
| JPS56173305U (en) | 1981-12-21 |
| FR2140601B1 (en) | 1977-12-23 |
| DE2227066C2 (en) | 1981-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |