Patent US3815593A successfully refreshed from Google Patents.
US3815593A
Expired / Lapsed
US
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Static respirator for artificial respiration
Assignee: LE MATERIEL MEDICAL SCIENT
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Filing: 1971-01-14
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Granted: 1974-06-11
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Expires: 1991-01-14
Abstract
Abstract A static respirator free of movable members having components to operate on demand by simple suction applied by a patient and components for automatic application of a controlled respiration to a patient. The apparatus is provided with components for setting respiratory parameters for individual patients.
Inventors
- 👤 G Baumont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:20
CPC Classifications
A; A61; A61M; A61M16/00; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/212
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
471 words
Static respirator for artificial respiration disposed in operation between a mouthpiece and a source of gas under pressure comprising: a monostable fluid amplifier having an inlet, two asymmetric outlets corresponding to inoperative and operative conditions of the amplifier, respectively, and first and second opposite control inlets disposed on the side of said outlets, respectively; a bistable fluid amplifier having an inlet, two symmetric outlets corresponding to the inoperative and operative conditions of the amplifier, respectively, and first and second opposite control inlets disposed on the side of said last-named outlets respectively, said amplifiers being both so disposed that their inlets are connectable in use to a source of gas under pressure and each operable to develop a main gas jet and deliver same from one of its outlets; means fluidally connecting one outlet of said monostable amplifier to the first control inlet of the same amplifier to form a control jet which, by interaction with the main jet, tends to deflect said main jet towards the other outlet of said monostable amplifier which corresponds to the operative condition thereof; means fluidally connecting said other outlet of said monostable amplifier to the first control inlet of said bistable amplifier; means connected to one outelt of said bistable amplifier for receiving therefrom the main jet and developing a control jet and applying same to said bistable amplifier after a predetermined time delay to deflect the main jet to the other outlet of said bistable amplifier; a pause timeadjustment valve connected to said bistable amplifier and cooperative with said last-mentioned means for adjusting the duration of said time delay; a non-return valve fluidally connected to the mouthpiece and having means therein defining an expiration orifice vented to the atmosphere; an inflatable bladder effective when inflated to seal said orifice; a fluid circuit comprising, in succession, a pneumatic power relay fluidally connected to said source of gas and having a control inlet, another valve for controlling the gas flow, and a venturi device having its outlet connected through a duct to said nonreturn valve; means fluidally connecting said other outlet of said bistable amplifier to both said control inlet of said pneumatic power relay and to the interior of said inflatable bladder; means fluidally interconnecting the two second control inlets of said amplifiers and providing direct communication between same and one of said venturi device and said non-return valve; and another valve for adjusting the demand effort exerted by a patient using the respirator and inserted in said means fluidally connecting said one outlet of said monostable amplifier to said first control inlet of the same amplifier, and wherein said means for developing a control jet comprises a control circuit having fluidally connected in series said pause timeadjustment valve, a pneumatic ON/OFF switch for controlling the automatic operation of the circuit and a constant-volume vessel.
Claim 2
Dependent Claim
471 words
Static respirator for artificial respiration disposed in operation between a mouthpiece and a source of gas under pressure comprising: a monostable fluid amplifier having an inlet, two asymmetric outlets corresponding to inoperative and operative conditions of the amplifier, respectively, and first and second opposite control inlets disposed on the side of said outlets, respectively; a bistable fluid amplifier having an inlet, two symmetric outlets corresponding to the inoperative and operative conditions of the amplifier, respectively, and first and second opposite control inlets disposed on the side of said last-named outlets respectively, said amplifiers being both so disposed that their inlets are connectable in use to a source of gas under pressure and each operable to develop a main gas jet and deliver same from one of its outlets; means fluidally connecting one outlet of said monostable amplifier to the first control inlet of the same amplifier to form a control jet which, by interaction with the main jet, tends to deflect said main jet towards the other outlet of said monostable amplifier which corresponds to the operative condition thereof; means fluidally connecting said other outlet of said monostable amplifier to the first control inlet of said bistable amplifier; means connected to one outelt of said bistable amplifier for receiving therefrom the main jet and developing a control jet and applying same to said bistable amplifier after a predetermined time delay to deflect the main jet to the other outlet of said bistable amplifier; a pause timeadjustment valve connected to said bistable amplifier and cooperative with said last-mentioned means for adjusting the duration of said time delay; a non-return valve fluidally connected to the mouthpiece and having means therein defining an expiration orifice vented to the atmosphere; an inflatable bladder effective when inflated to seal said orifice; a fluid circuit comprising, in succession, a pneumatic power relay fluidally connected to said source of gas and having a control inlet, another valve for controlling the gas flow, and a venturi device having its outlet connected through a duct to said nonreturn valve; means fluidally connecting said other outlet of said bistable amplifier to both said control inlet of said pneumatic power relay and to the interior of said inflatable bladder; means fluidally interconnecting the two second control inlets of said amplifiers and providing direct communication between same and one of said venturi device and said non-return valve; and another valve for adjusting the demand effort exerted by a patient using the respirator and inserted in said means fluidally connecting said one outlet of said monostable amplifier to said first control inlet of the same amplifier, and wherein said means for developing a control jet comprises a control circuit having fluidally connected in series said pause timeadjustment valve, a pneumatic ON/OFF switch for controlling the automatic operation of the circuit and a constant-volume vessel.
Claim 3
Dependent Claim
44 words
A static respirator as set forth in claim 1 including a pressure regulator; and means connecting said inlet of said monostable amplifier to the outlet of said pressure regulator through a throttle passage permitting reducing the pressure at the inlet of said monostable amplifier.
Claim 4
Dependent Claim
31 words
A static respirator as set forth in claim 2 including a valve connecting said inlet of said monostable amplifier to the outlet of said pressure regulator for adjusting the insufflation pressure.
Claim 5
Dependent Claim
48 words
A static respirator as set forth in claim 3, wherein said venturi device comprises an atmospheric air intake, the atmospheric air being carried along by induction in order to provide at the outlet end of said venturi device a mixture comprising equal volumetric amounts of air and oxygen.
Claim 6
Dependent Claim
473 words
Static respirator for artificial respiration disposed in operation between a mouthpiece and a source of gas under pressure comprising: a monostable fluid amplifier having an inlet, Two asymmetric outlets corresponding to inoperative and operative conditions of the amplifier, respectively, and first and second opposite control inlets disposed on the side of said outlets, respectively; a bistable fluid amplifier having an inlet, two symmetric outlets corresponding to the inoperative and operative conditions of the amplifier, respectively, and first and second opposite control inlets disposed on the side of said last-named outlets respectively, said amplifiers being both so disposed that their inlets are connectable in use to a source of gas under pressure and each operable to develop a main gas jet and deliver same from one of its outlets; means fluidally connecting one outlet of said monostable amplifier to the first control inlet of the same amplifier to form a control jet which, by interaction with the main jet, tends to deflect said main jet towards the other outlet of said monostable amplifier which corresponds to the operative condition thereof; means fluidally connecting said other outlet of said monostable amplifier to the first control inlet of said bistable amplifier; means connected to one outlet of said bistable amplifier for receiving therefrom the main jet and developing a control jet and applying same to said bistable amplifier after a predetermined time delay to deflect the main jet to the other outlet of said bistable amplifier; a pause time-adjustment valve connected to said bistable amplifier and cooperative with said last-mentioned means for adjusting the duration of said time delay; a non-return valve fluidally connected to the mouthpiece and having means therein defining an expiration orifice vented to the atmosphere; an inflatable bladder effective when inflated to seal said orifice; a fluid circuit comprising, in succession, a pneumatic power relay fluidally connected to said source of gas and having a control inlet, another valve for controlling the gas flow, and a venturi device having its outlet connected through a duct to said non-return valve; means fluidally connecting said other outlet of said bistable amplifier to both said control inlet of said pneumatic power relay and to the interior of said inflatable bladder; means fluidally interconnecting the two second control inlets of said amplifiers and providing direct communication between same and one of said venturi device and said non-return valve; and another valve for adjusting the demand effort exerted by a patient using the respirator and inserted in said means fluidally connecting said one outlet of said monostable amplifier to said first control inlet of the same amplifier, and wherein said means for developing a control jet comprises a pneumatic relay connected to the outlet of said pause time-adjustment valve, and a duct connecting the inlet of said last-named valve to said one outlet of said monostable amplifier.
Claim 7
Dependent Claim
473 words
Static respirator for artificial respiration disposed in operation between a mouthpiece and a source of gas under pressure comprising: a monostable fluid amplifier having an inlet, Two asymmetric outlets corresponding to inoperative and operative conditions of the amplifier, respectively, and first and second opposite control inlets disposed on the side of said outlets, respectively; a bistable fluid amplifier having an inlet, two symmetric outlets corresponding to the inoperative and operative conditions of the amplifier, respectively, and first and second opposite control inlets disposed on the side of said last-named outlets respectively, said amplifiers being both so disposed that their inlets are connectable in use to a source of gas under pressure and each operable to develop a main gas jet and deliver same from one of its outlets; means fluidally connecting one outlet of said monostable amplifier to the first control inlet of the same amplifier to form a control jet which, by interaction with the main jet, tends to deflect said main jet towards the other outlet of said monostable amplifier which corresponds to the operative condition thereof; means fluidally connecting said other outlet of said monostable amplifier to the first control inlet of said bistable amplifier; means connected to one outlet of said bistable amplifier for receiving therefrom the main jet and developing a control jet and applying same to said bistable amplifier after a predetermined time delay to deflect the main jet to the other outlet of said bistable amplifier; a pause time-adjustment valve connected to said bistable amplifier and cooperative with said last-mentioned means for adjusting the duration of said time delay; a non-return valve fluidally connected to the mouthpiece and having means therein defining an expiration orifice vented to the atmosphere; an inflatable bladder effective when inflated to seal said orifice; a fluid circuit comprising, in succession, a pneumatic power relay fluidally connected to said source of gas and having a control inlet, another valve for controlling the gas flow, and a venturi device having its outlet connected through a duct to said non-return valve; means fluidally connecting said other outlet of said bistable amplifier to both said control inlet of said pneumatic power relay and to the interior of said inflatable bladder; means fluidally interconnecting the two second control inlets of said amplifiers and providing direct communication between same and one of said venturi device and said non-return valve; and another valve for adjusting the demand effort exerted by a patient using the respirator and inserted in said means fluidally connecting said one outlet of said monostable amplifier to said first control inlet of the same amplifier, and wherein said means for developing a control jet comprises a pneumatic relay connected to the outlet of said pause time-adjustment valve, and a duct connecting the inlet of said last-named valve to said one outlet of said monostable amplifier.
Claim 8
Dependent Claim
122 words
A static respirator as set forth in claim 5, wherein said pneumatic relay comprises a body defining a chamber, said chamber enclosing an inflated valve-forming bladder and communicating normally through a plurality of holes with the surrounding atmosphere, a duct connected to said vent port opening into said chamber and closed by the valve-forming bladder when the latter is inflated, the interior of said bladder communicating with said pause time-adjustment valve and with another chamber connecting said bladder interior to the surrounding atmosphere through an orifice adapted to be closed by one face of a flexible membrane, the other face of said membrane being disposed in front of another chamber communicating via a duct with said one outlet of said bistable amplifier.
Claim 9
Dependent Claim
44 words
A static respirator as set forth in claim 6, including a pressure regulator; and means connecting said inlet of said monostable amplifier to the outlet of said pressure regulator through a throttle passage permitting reducing the pressure at the inlet of said monostable amplifier.
Claim 10
Dependent Claim
31 words
A static respirator as set forth in claim 7, including a valve connecting said inlet of said monostaBle amplifier to the outlet of said pressure regulator for adjusting the insufflation pressure.
Claim 11
Dependent Claim
48 words
A static respirator as set forth in claim 8, wherein said venturi device comprises an atmospheric air intake, the atmospheric air being carried along by induction in order to provide at the outlet end of said venturi device a mixture comprising equal volumetric amounts of air and oxygen.
Claim 12
Dependent Claim
56 words
A static respirator as set forth in claim 9, including a fitting provided for the ventilation output, said fitting being connected to the outlet end of said venturi device and comprising a branch pipe incorporating a humidifier having its outlet connected to said non-return valve and the outlet of said venturi device to said non-return valve.
Claim 13
Dependent Claim
77 words
A static respirator as set forth in claim 10, wherein said respirator comprises a casing having on a front face control means associated with said insufflation pressure adjustment valve, said pause time adjustment valve, said demand effort adjustment valve and said ventilatory output adjustment valve, respectively, said casing further comprising a pressure-vacuum gauge connected to the said amplifiers, to said venturi device, and said non-return valve, and a carrier handle disposed at the top of said casing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |