US3913458A - Respirator actuating mechanism - Google Patents

Respirator actuating mechanism Download PDF

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Publication number
US3913458A
US3913458A US450477A US45047774A US3913458A US 3913458 A US3913458 A US 3913458A US 450477 A US450477 A US 450477A US 45047774 A US45047774 A US 45047774A US 3913458 A US3913458 A US 3913458A
Authority
US
United States
Prior art keywords
motor
swinging member
stroke
pumps
connecting 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 - Lifetime
Application number
US450477A
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English (en)
Inventor
Guy Foures
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3913458A publication Critical patent/US3913458A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0072—Tidal volume piston pumps

Definitions

  • variable speed motor for driving said pumps 180 out [56] References Cited of phase, and adjustable linkage means for altering the UNITED STATES PATENTS stroke imparted to said pumps by said motor.
  • the apparatus has the effect of eliminating dead spaces in the ventilation which is particularly valuable in infantile ventilation.
  • the apparatus also has the advantage of dividing up the respiratory cycle with great precision.
  • the apparatus comprises a variable speed motor controlling a mechanical assembly which actuates at least two pumps having spherical pistons, one for inhalation and one for exhalation, operating continuously and 180 out of phase. Valves are used to distribute the ventilation in accordance with the selected respiratory cycle and are program controlled.
  • an electrical variable-speed motor I adjusted to the respiratory rhythm of the patient or to one selected by the physician, is mounted on a support pivotally attached at 2 to the base of apparatus. It is equipped with a program disc 3 at one end of its shaft and a crank 4 at its other end, which crank carries a ball and socket joint 5 attached to a connecting rod 6 which transmits the movement of the motor to a swinging member '7 through a ball and socket joint 8.
  • the variation in the movement of .the ball and socket joint 8 is dependent on the position of the motor support on the sector on which it turns. It may be electrically or manually positioned and locked in the selected position.
  • the swinging member 7 is fixed to two arms 9 each carrying at one end a pivotal joint 10.
  • Pivots 11 permit an alternating angular rotation of the assembly comprising the swinging member 7 and the arms 9, said pivots being fixed to the framework of the apparatus.
  • the pivotal joints of the two arms 9 are attached to piston rods 12 which carry the spherical pistons 13, the shape of which avoids any disadvantage resulting from a change in the angular position of the rods which carry them, so that these changes in angle due to movement of the arms 9 does not prevent the ability of the pistons to stay in sealing contact with the walls of the pump chambers 14.
  • the ventilation is distributed by means of valves 15 controlled by a program disc 3 during the respiratory cycle.
  • Various electrical or fluid control points are provided on the periphery of the disc.
  • the selection of the cycle is made by a switch on a control panel. This means of controlling the respiratory cycle makes it possible to obtain diverse functions such as self-initiated respiration, various warnings, etc.
  • a digital counter for the frequency is mounted on the motor shaft.
  • a pressure responsive device having a memory awaits the moment at which the programming device is in a position to start inhalation in order to deliver a respiratory cycle to the patient.
  • the choice of various phases in the action of said respiratory cycle may be adjusted by an operator or by electrical signals received from auxiliary apparatus carrying out continuous physiological analyses.
  • the assembly of the apparatus may be constructed on a modular 19 inch base to facilitate its integration with a monitoring and indicating panel.
  • the present invention may be used in any medical or other service requiring respiratory assistance and particularly in the case where prolonged respiratory assistance is necessary.
  • Apparatus for providing respiratory assistance comprising a support carrying a variable speed electric motor connected to actuate spherical pistons in two pumps through appropriate linkage, one pump being connected to provide inhalation and the other exhalation, said motor carrying a crank at one end of its shaft which actuates said linkage, and said linkage comprising a connecting rod.

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  • 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)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US450477A 1973-03-15 1974-03-12 Respirator actuating mechanism Expired - Lifetime US3913458A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7310425A FR2221155B1 (enExample) 1973-03-15 1973-03-15

Publications (1)

Publication Number Publication Date
US3913458A true US3913458A (en) 1975-10-21

Family

ID=9116735

Family Applications (1)

Application Number Title Priority Date Filing Date
US450477A Expired - Lifetime US3913458A (en) 1973-03-15 1974-03-12 Respirator actuating mechanism

Country Status (4)

Country Link
US (1) US3913458A (enExample)
DE (1) DE2412328A1 (enExample)
FR (1) FR2221155B1 (enExample)
GB (1) GB1469274A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6162023A (en) * 1996-05-15 2000-12-19 Newman; Graeme Harold Reciprocating cam actuation mechanism for a pump

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177311A (en) * 1985-07-02 1987-01-21 Duncan Mackay Geddes Ventilatory apparatus
US4832014A (en) * 1985-10-02 1989-05-23 Perkins Warren E Method and means for dispensing two respirating gases by effecting a known displacement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1710567A (en) * 1926-10-14 1929-04-23 John Robson Hydraulic pump, motor, brake, transmission gear, and the like
US1815828A (en) * 1930-08-16 1931-07-21 Walter J Brightwell Air compressing machine
US3443521A (en) * 1967-01-26 1969-05-13 Carl H Stender Pumping equipment and operating mechanism
US3716310A (en) * 1970-03-09 1973-02-13 Gun Web Ltd Direct drive ball piston compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1710567A (en) * 1926-10-14 1929-04-23 John Robson Hydraulic pump, motor, brake, transmission gear, and the like
US1815828A (en) * 1930-08-16 1931-07-21 Walter J Brightwell Air compressing machine
US3443521A (en) * 1967-01-26 1969-05-13 Carl H Stender Pumping equipment and operating mechanism
US3716310A (en) * 1970-03-09 1973-02-13 Gun Web Ltd Direct drive ball piston compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6162023A (en) * 1996-05-15 2000-12-19 Newman; Graeme Harold Reciprocating cam actuation mechanism for a pump

Also Published As

Publication number Publication date
FR2221155B1 (enExample) 1978-07-13
GB1469274A (en) 1977-04-06
DE2412328A1 (de) 1974-09-19
FR2221155A1 (enExample) 1974-10-11

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