EP0274996A2
Expired / Lapsed
EP
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Constant flow pressure-responsive pulmotor
Assignee: ELMED GINEVRI Srl
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Filing: 1987-12-21
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Granted: —
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Expires: 2007-12-21
Abstract
Abstract A constant flow and controlled ventilation, pressure responsive pulmotor comprising in a single unit mixing means for proportioning the amounts of air and oxygen, means for regulating the flow fed (2) to the inhalation conduit (3) on which some valve means are provided for intercepting the flow at a previously established maximum or peak value of the inhalation pressure, and humidifying and heating means (5) controlled by a servo system (6), solenoid valve means (12) inserted in the expiration conduit (8) which is provided at its discharge end with valve means (13) for discharging air at a minimum pressure value, an electronic unit for the conversion of keyed parameters into control parameters, keyboard means (31,32) for keying said keyed parameters, monitoring means (11) for visualizing said controlled parameters and printing means (15) for the transcription of said controlled parameters, said electronic processing unit being provided with an information file for keying and correctly running the ventilation operations.
Inventors
- 👤 Giorgio Ginevri
- 👤 Corrado Moretti
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 01:00
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0051; A61M16/021; A61M16/022; A61M16/024; A61M16/10; A61M16/1075; A61M16/109; A61M16/12; A61M16/08; A61M16/0808; A61M16/0003; A61M2016/0027; A61M2205/00; A61M2205/50; A61M2205/502; A61M2205/58; A61M2205/581; A61M2230/00; A61M2230/04; A61M2230/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
167 words
A constant flow pressure responsive pulmotor characterized in that it comprises in a single unit mixing means for the proportioning of amounts of air and oxygen, means for the regulation of the flowrate fed to the ventilation conduit in which some valve means are provided for intercepting the flow at a maximum value previously set forth of the inhalation pressure (V MAX ) and humidifying and heating means controlled by a servo system, solenoid valve means inserted in the expiration conduit provided at its discharge end with valve means for discharging the expiration air at a value of the pressure corresponding to a minimum value (V MIN ), an electronic processing unit for the conversion of the keyed parameters into control parameters, keyboard means for keying said keyed parameters, monitoring means for the visualization of said controlled parameters and printing unit means for the transcription of said controlled parameters, said electronic processing unit being proviede with an information file for keying and running correctly the ventilation operation.
Claim 2
Dependent Claim
167 words
A constant flow pressure responsive pulmotor characterized in that it comprises in a single unit mixing means for the proportioning of amounts of air and oxygen, means for the regulation of the flowrate fed to the ventilation conduit in which some valve means are provided for intercepting the flow at a maximum value previously set forth of the inhalation pressure (V MAX ) and humidifying and heating means controlled by a servo system, solenoid valve means inserted in the expiration conduit provided at its discharge end with valve means for discharging the expiration air at a value of the pressure corresponding to a minimum value (V MIN ), an electronic processing unit for the conversion of the keyed parameters into control parameters, keyboard means for keying said keyed parameters, monitoring means for the visualization of said controlled parameters and printing unit means for the transcription of said controlled parameters, said electronic processing unit being proviede with an information file for keying and running correctly the ventilation operation.
Claim 3
Dependent Claim
112 words
A pressure responsive pulmotor according to claim 1, wherein the control board of said processing unit comprises knob means for the regulation of the oxygen percentage in the air-oxygen mixture and for the regulating of the flowrate of said mixture, push button means for keying the values of the inhalation pressure of the expiration pressure intended for the regulation of said valves V MAX and V MIN , knob means for the keying of the inhalation and the expiration times, knob means for keying the alarm values respectively for the maximum and the minimum pressure, and key means for the activation and disactivation of the video image and of the printing unit.
Claim 4
Dependent Claim
49 words
A pressure responsive pulmotor according to claim 2, wherein said knob means for keying the oxygen percentage in the air-oxygen mixture and of the flowrate of said mixture are previously set forth for values of the oxygen percentage from 21 to 100 % and from 0 to 20 l/min.
Claim 5
Dependent Claim
43 words
A pressure responsive pulmotor according to claim 3, wherein sound alarm means are provided which became active when the difference in the pressure level between the two circuits coming from the air source and the oxygen source exceeds the value of one atmosphere.
Claim 6
Dependent Claim
43 words
A pressure responsive pulmotor according to each one of the claims 1-4 wherein said solenoid valve means are made up of a pinchcock solenoid valve which can be rapidly substituted and exerts its action on the outer surface of the expiration air conduit.
Claim 7
Dependent Claim
23 words
A pressure responsive pulmotor according to claim 5 wherein some spare solenoid valve means are provided to be employed in case of faults.
Claim 8
Dependent Claim
38 words
A pressure responsive pulmotor according to each one of claims 1-6, wherein a bottle is provided in the expiration air conduit, at a point downstream said valve V MIN , said bottle being intended for collecting the condensate.
Claim 9
Dependent Claim
147 words
A pressure responsive pulmotor according to claims 1-7, wherein the screen of said monitoring means shows in its upper portion a subdivision into small boxes, in which boxes the values of the following parameters are visualized: - breathing rate (Rate) - inhalation time (Ti) - expiration time (Te) - I/E ratio - level of P MAX (PIP) - value of the mean inhalation pressure and mean pressure in the whole respiratory cycle (MIP-MAP) - the pressure of the expiration end PEEP - ventilation time and in its lower portion, the space for visualizing on a pressure-time diagram, the pressure waveform as a function of time between the successive inhalation and expiration phases, said pressure wave giving in real time the value of the average pressure in the breathing apparatus during a whole respiratory cycle (MAP) and the average value of pressure during the inhalation time only (MIP).
Claim 10
Dependent Claim
33 words
A pressure responsive pulmotor according to claim 8, wherein key means are provided on the control board for changing the representation scale of the pressure wave on the screen of the monitoring means.
Claim 11
Dependent Claim
52 words
A pressure responsive pulmotor according to claims 1-9 wherein said electronic processing unit contain an information file relating to the operations for the patient's preparation to ventilation, as well as to the operations of intubation and connection to the pulmotor and relating to the prescriptions of rapid intervention during the working cycle.
Claim 12
Dependent Claim
25 words
A pressure responsive pulmotor according to claims 1-10, wherein a connection is provided with a heart rate meter for automatic intervention in case of bradycardia.
Claim 13
Dependent Claim
23 words
A pressure responsive pulmotor according to claims 1-11 which is of the constant flow, controlled ventilation type, substantially as disclosed and illustrated above.
References Cited (Backward Citations)
No citation records indexed.
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