GB1248302A - Improvements in or relating to closed circuit medical respirators - Google Patents

Improvements in or relating to closed circuit medical respirators

Info

Publication number
GB1248302A
GB1248302A GB5110/69A GB511069A GB1248302A GB 1248302 A GB1248302 A GB 1248302A GB 5110/69 A GB5110/69 A GB 5110/69A GB 511069 A GB511069 A GB 511069A GB 1248302 A GB1248302 A GB 1248302A
Authority
GB
United Kingdom
Prior art keywords
bellows
valve
closed circuit
gas
return valve
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
Application number
GB5110/69A
Inventor
B J Kipling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pye Electronic Products Ltd
Original Assignee
Pye Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pye Ltd filed Critical Pye Ltd
Priority to GB5110/69A priority Critical patent/GB1248302A/en
Priority to NL7001028A priority patent/NL7001028A/xx
Priority to ZA700541A priority patent/ZA70541B/en
Priority to DE19702003538 priority patent/DE2003538A1/en
Priority to SE7000998A priority patent/SE375238B/en
Priority to JP45007292A priority patent/JPS4911834B1/ja
Priority to US6845A priority patent/US3695263A/en
Priority to FR7003312A priority patent/FR2029721B1/fr
Priority to CA073502A priority patent/CA929067A/en
Publication of GB1248302A publication Critical patent/GB1248302A/en
Expired legal-status Critical Current

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
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • 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
    • 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
    • A61M16/0057—Pumps 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
    • A61M16/06—Respiratory or anaesthetic masks
    • 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
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • 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
    • A61M16/0075—Bellows-type
    • 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
    • A61M2016/0024—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with an on-off output signal, e.g. from a switch
    • 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
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter

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

1,248,302. Closed circuit respirators. PYE Ltd. 2 Jan., 1970 [30 Jan., 1969], No. 5110/69. Heading AST. In a closed circuit medical respirator comprising an expiratory line 6 including a non- return valve NR3, a purifier 15 a non-return valve NR1 and a bellows P and an inspiratory line 3 by which the purified air is returned to the patient via non-return valve NR2 is a pressure sensor 10 having adjustable bias means for controlling the drive means of the bellows during an expiratory phase. The bias means comprises a gas inlet 17 and a pressure regulator PR4. The output from the sensor 10 is fed into an amplifier 13 and thence to a controller 8 which regulates the flow of drive gas from a gas inlet L3 to a cylinder V containing a piston U which is mechanically linked to the bellows P. Further respiratory gas to charge the closed system may be applied at port N and passed through a spring loaded valve R2 into the system. The bellows are alternately expanded and constructed for inducing respiration by a fluidoperated multivibrator 18 which operates change over valves C02 and CO3 which alternately supply drive gas to ports V 2 and V 1 respectively of cylinder V and which are respectively connected to actuating cylinders Z 2 of valve R2 and Z of valve R associated with fase mask FM respectively.
GB5110/69A 1969-01-30 1969-01-30 Improvements in or relating to closed circuit medical respirators Expired GB1248302A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB5110/69A GB1248302A (en) 1969-01-30 1969-01-30 Improvements in or relating to closed circuit medical respirators
NL7001028A NL7001028A (en) 1969-01-30 1970-01-24
ZA700541A ZA70541B (en) 1969-01-30 1970-01-26 Improvements in or relating to closed circuit medical respirators
DE19702003538 DE2003538A1 (en) 1969-01-30 1970-01-27 Medical closed circuit breathing apparatus
SE7000998A SE375238B (en) 1969-01-30 1970-01-27 Respirator with closed circuit
JP45007292A JPS4911834B1 (en) 1969-01-30 1970-01-28
US6845A US3695263A (en) 1969-01-30 1970-01-29 Closed circuit medical respirators
FR7003312A FR2029721B1 (en) 1969-01-30 1970-01-30
CA073502A CA929067A (en) 1969-01-30 1970-01-30 Closed circuit medical respirators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5110/69A GB1248302A (en) 1969-01-30 1969-01-30 Improvements in or relating to closed circuit medical respirators

Publications (1)

Publication Number Publication Date
GB1248302A true GB1248302A (en) 1971-09-29

Family

ID=9789904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5110/69A Expired GB1248302A (en) 1969-01-30 1969-01-30 Improvements in or relating to closed circuit medical respirators

Country Status (9)

Country Link
US (1) US3695263A (en)
JP (1) JPS4911834B1 (en)
CA (1) CA929067A (en)
DE (1) DE2003538A1 (en)
FR (1) FR2029721B1 (en)
GB (1) GB1248302A (en)
NL (1) NL7001028A (en)
SE (1) SE375238B (en)
ZA (1) ZA70541B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951137A (en) * 1974-11-20 1976-04-20 The United States Of America As Represented By The Secretary Of The Air Force Rebreathing system
SE430213B (en) * 1981-03-10 1983-10-31 Siemens Elema Ab RESPIRATOR INTENDED TO BE CONNECTED TO THE HUMAN OR ANIMAL PATIENTS
US4928685A (en) * 1988-10-05 1990-05-29 Cairns & Brother Inc. Closed-circuit positive pressure breathing apparatus with pneumatically operated storage chamber
WO2000053247A1 (en) * 1999-03-06 2000-09-14 Glaxo Group Limited Medicament delivery system
US8302602B2 (en) 2008-09-30 2012-11-06 Nellcor Puritan Bennett Llc Breathing assistance system with multiple pressure sensors
US9364624B2 (en) 2011-12-07 2016-06-14 Covidien Lp Methods and systems for adaptive base flow
US9498589B2 (en) 2011-12-31 2016-11-22 Covidien Lp Methods and systems for adaptive base flow and leak compensation
US8844526B2 (en) 2012-03-30 2014-09-30 Covidien Lp Methods and systems for triggering with unknown base flow
US9981096B2 (en) 2013-03-13 2018-05-29 Covidien Lp Methods and systems for triggering with unknown inspiratory flow
US9808591B2 (en) 2014-08-15 2017-11-07 Covidien Lp Methods and systems for breath delivery synchronization
US9950129B2 (en) 2014-10-27 2018-04-24 Covidien Lp Ventilation triggering using change-point detection
US9925346B2 (en) 2015-01-20 2018-03-27 Covidien Lp Systems and methods for ventilation with unknown exhalation flow
DE102017006655A1 (en) * 2017-07-13 2019-01-17 GRÜNDLER GmbH Respiratory support system and patient set for this
US11324954B2 (en) 2019-06-28 2022-05-10 Covidien Lp Achieving smooth breathing by modified bilateral phrenic nerve pacing

Also Published As

Publication number Publication date
JPS4911834B1 (en) 1974-03-19
FR2029721B1 (en) 1975-12-26
DE2003538A1 (en) 1970-08-27
SE375238B (en) 1975-04-14
CA929067A (en) 1973-06-26
NL7001028A (en) 1970-08-03
FR2029721A1 (en) 1970-10-23
ZA70541B (en) 1971-08-25
US3695263A (en) 1972-10-03

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