US3881480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breathing aid apparatus
Assignee: ARM BIOMEDICAL SA ZONE INDUSTRIELLE INTERNATIONALE SOFCAR RUE DE MONTREAL F-74100 VILLE-LA-GRAND FRANCE A CORP OF FRANCE
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Filing: 1973-03-07
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Granted: 1975-05-06
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Expires: 1993-03-07
Abstract
Abstract An artificial respiration apparatus comprising a tip connectable to a source of gas under pressure, said tip including a bore hole; a valve seat at the end of said bore hole facing away from the source; an outlet connectable to the respiratory system of a patient; a movable valve member cooperating with said valve seat to close said bore hole, a spring cooperating with said movable valve member and biasing the same against said valve seat, a housing including a first chamber communicating with said source of gas and also with said outlet when the moving valve member is not in contact with the valve seat; and a second chamber in which said spring is housed, one wall of said second chamber being formed of said movable valve member, a channel communicating said first chamber with said second chamber, a pellet of porous material disposed in said channel which produces a loss of pressure therein; and a pressure screw cooperating with said pellet for varying the compression thereof, thereby adjusting the flow of gas from said first chamber to said second chamber.
Inventors
- 👤 Jean-Michel Lafourcade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:52
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0003; A61M16/0009; A61M16/0012; A61M16/10; A61M16/12; A61M16/122; A61M16/125; A61M16/127; A61M16/20; A61M16/201; A61M2202/00; A61M2202/02; A61M2202/0208; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/785; Y10T137/7852
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
239 words
An artificial respiration apparatus comprising: a tip connectable to a source of gas under pressure, said tip including a bore hole; a valve seat at the end of said bore hole facing away from the source; an outlet connectable to the respiratory system of a patient; and means for controlling the flow of gas permitting it to pass from the source of gas to said outlet during the inhalation phase of the patient but preventing said flow during the exhalation phase of the patient, said means comprising a movable valve member cooperating with said valve seat to close said bore hole, a spring cooperating with said movable valve member and biasing the same against said valve seat, a housing including a first chamber communicating with said source of gas and also with said outlet when the moving valve member is not in contact with the valve seat; and a second chamber in which said spring is housed, one wall of said second chamber being formed of said movable valve member, channel means causing said first chamber and said second chamber to communicate with each other, a pellet of poroUs material disposed in said channel means, said pellet introducing a loss of pressure in the channel means; and a pressure screw cooperating with said pellet for varying the compression thereof, variation of the compression of the pellet permitting adjustment of the flow of gas between said first and second chambers.
Claim 2
Dependent Claim
239 words
An artificial respiration apparatus comprising: a tip connectable to a source of gas under pressure, said tip including a bore hole; a valve seat at the end of said bore hole facing away from the source; an outlet connectable to the respiratory system of a patient; and means for controlling the flow of gas permitting it to pass from the source of gas to said outlet during the inhalation phase of the patient but preventing said flow during the exhalation phase of the patient, said means comprising a movable valve member cooperating with said valve seat to close said bore hole, a spring cooperating with said movable valve member and biasing the same against said valve seat, a housing including a first chamber communicating with said source of gas and also with said outlet when the moving valve member is not in contact with the valve seat; and a second chamber in which said spring is housed, one wall of said second chamber being formed of said movable valve member, channel means causing said first chamber and said second chamber to communicate with each other, a pellet of poroUs material disposed in said channel means, said pellet introducing a loss of pressure in the channel means; and a pressure screw cooperating with said pellet for varying the compression thereof, variation of the compression of the pellet permitting adjustment of the flow of gas between said first and second chambers.
Claim 3
Dependent Claim
188 words
The apparatus according to claim 1 wherein said outlet is formed by the throat portion of a venturi, the apparatus further comprising a nozzle between said outlet and a neck portion of the venturi, said nozzle having an orifice directed towards said neck portion, a channel connecting said nozzle to said bore hole, and means interposed in said channel for selectively interrupting and establishing pneumatic communication between said bore hole and said nozzle, said means including an annular third chamber of adjustable length surrounding said bore hole, a displaceable member defining one of transverse walls of said third chamber for modifying the length thereof, and two toroidal gaskets in said third chamber, said gaskets being movable by the action of pressure forces, placement of said two gaskets in contact with each other interrupting said pneumatic communication when said movable valve member is out of engagement with said valve seat, said communication being open when said movable valve member is in engagement with said valve seat whereby a flow of gas in the direction opposite that during the inhalation phase is established in the venturi during the exhalation phase.
Claim 4
Dependent Claim
213 words
An artificial respiration apparatus comprising: a tip connectable to a source of gas under pressure, said tip including a bore hole; a valve seat at the end of said bore hole facing away from said source, the axis of said valve seat being coaxial with the axis of said bore hole; an outlet connectable to the respiration system of a patient; and means for controlling the flow of gas, said means permitting the gas flow to pass from the source of gas to said outlet during the inhalation phase of the patient but preventing said flow during the exhalation phase of the patient, said means including a servo-controlled valve, said valve comprising a movable member cooperating with said valve seat, elastic means biasing said movable member toward said valve seat to close said bore hole in response to the action of said movable member being subjected to the pressure of gas from said source of gas and to the action of a differential pressure acting in the same direction as the elastic means, said differential pressure being obtained from said source of gas by means introducing an adjustable loss of pressure in a flow circuit provided between said valve seat and the face side of the movable member upon said elastic means acts.
Claim 5
Dependent Claim
213 words
An artificial respiration apparatus comprising: a tip connectable to a source of gas under pressure, said tip including a bore hole; a valve seat at the end of said bore hole facing away from said source, the axis of said valve seat being coaxial with the axis of said bore hole; an outlet connectable to the respiration system of a patient; and means for controlling the flow of gas, said means permitting the gas flow to pass from the source of gas to said outlet during the inhalation phase of the patient but preventing said flow during the exhalation phase of the patient, said means including a servo-controlled valve, said valve comprising a movable member cooperating with said valve seat, elastic means biasing said movable member toward said valve seat to close said bore hole in response to the action of said movable member being subjected to the pressure of gas from said source of gas and to the action of a differential pressure acting in the same direction as the elastic means, said differential pressure being obtained from said source of gas by means introducing an adjustable loss of pressure in a flow circuit provided between said valve seat and the face side of the movable member upon said elastic means acts.
Claim 6
Dependent Claim
61 words
The apparatus according to claim 3 wherein said elastic means is a spring, the apparatus comprising further means for adjusting the force developed by said spring, said spring force controlling the ratio of the duration of engagement of said movable valve member with said valve seat relative to the duration of non-engagement of said movable valve member with said valve seat.
Claim 7
Dependent Claim
48 words
The apparatus according to claim 3 wherein said movable valve member comprises a piston tightly slidable in a further chamber, said elastic means being disposed in said further chamber, and said flow circuit including said means for introducing an adjustable loss of pressure discharges into said further chamber.
Claim 8
Dependent Claim
47 words
The apparatus according to claim 3 wherein said movable valve member comprises a deformable diaphragm forming an end wall of a further chamber in which said elastic means is disposed and into which discharges said flow circuit including said means for introducing an adjustable loss of pressure.
Claim 9
Dependent Claim
157 words
The apparatus according to claim 3 further comprising: a. means for controlling the flow of gas fed to the patient, said means being interposed between said bore hole and said outlet and including a first rotary barrel having a plurality of cHannels of different cross-sectional area, a member for setting said barrel and means for indexing the position of the barrel in order to adjust the flow to a value selected from among a plurality of predetermined values; and b. means for controlling the number of phases of inhalation per unit of time, said means comprising a second rotary barrel interposed in said flow circuit and provided with a plurality of means for introducing an adjustable loss of pressure, an operating member, and means for indexing the position of said second barrel so that said number of phases of inhalation per unit of time is adjustable to a value selected from among a plurality of predetermined values.
Claim 10
Dependent Claim
32 words
The apparatus according to claim 3 further comprising a non-return valve disposed between said bore hole and said outlet, and an adjustable leak means for adjusting the flow through said non-return valve.
Claim 11
Dependent Claim
114 words
The apparatus according to claim 3, comprising further a chamber disposed in the gas flow and having a venturi neck upstream in the direction of flow of the gas from the source of gas towards said outlet, a thin capillary tube; a tank of liquid for moistening the gas coming from the source of gas, and a connection connecting said tank to said tube the discharge end of which into the apparatus is substantially flush with the axis of said venturi neck so that the flow of gas coming from said source obtains a high speed atomizing said liquid thereby producing a fine mist of liquid particles in the gas fed to the patient.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |