CN110520181A - Continuing positive airway pressure unit - Google Patents
Continuing positive airway pressure unit Download PDFInfo
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- CN110520181A CN110520181A CN201880007344.1A CN201880007344A CN110520181A CN 110520181 A CN110520181 A CN 110520181A CN 201880007344 A CN201880007344 A CN 201880007344A CN 110520181 A CN110520181 A CN 110520181A
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- 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
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
- A61M16/209—Relief valves
-
- 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
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0666—Nasal cannulas or tubing
- A61M16/0672—Nasal cannula assemblies for oxygen therapy
- A61M16/0677—Gas-saving devices 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
- A61M16/20—Valves specially adapted to medical respiratory devices
-
- 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
- A61M16/0072—Tidal volume piston pumps
-
- 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
- A61M16/0078—Breathing bags
-
- 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
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means 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
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/16—Devices to humidify the respiration air
-
- 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
-
- 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
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
- A61M2016/0039—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the inspiratory circuit
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/02—Gases
- A61M2202/0208—Oxygen
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/82—Internal energy supply devices
- A61M2205/8206—Internal energy supply devices battery-operated
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- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Emergency Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Otolaryngology (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Provide a kind of continuous positive airway pressure (CPAP) device (100).The device (100) includes stablizing unit (102), the first gas source unit (104) and patient interface unit (106).First gas source unit (104) provides the input gas with variable flow by stablizing the ingress port (108) of unit (102).The manostat (110) for stablizing unit (102) receives input air-flow, and the manostat (110) expansion and contraction are changed with absorption pressure and provide the continuous flow under controlled pressure.Flowmeter (112) generates the output gas flow through adjusting based on preset flow.Output gas flow drains into patient interface unit (106) by stablizing the outlet port (118) of unit (102), which includes the nasal intubation (120) air-flow to be provided to patient and the valve (122) to maintain positive pressure.
Description
Technical field
The present invention relates to for providing the device of constant pressure and air-flow, and it is particularly directed to provide stable hold
The device of continuous Positive Airway Pressure.
Background technique
Respiratory distress syndrome (RDS) is a kind of respiratory disorder, and lung can be caused to collapse and exhale patient can not
It inhales.The treatment of these patients is provided by external Breathing Suppotion.For example, the surface reactive material of lung generates insufficient and lung
RDS may be suffered from birth by steeping undergrown premature.In general, providing outside using ventilator in the case where RDS
Breathing Suppotion.
Ventilator is a kind of trouble for being designed to for respirable aero-mechanical to be moveable into and out body and being unable to fully breathing
The machine of the lung of person.Ventilator has different types and remains raw using the distinct methods for providing Breathing Suppotion
Life.There are manual respirator such as capsule valve face cover (bag valvemask) and anesthesia air bag, manual respirator needs operator to use
Their hand keeps ventilator and maintains to breathe.Some ventilators such as mechanical respirator is usually computer-controlled and has
If the dry part being included in.In some cases, capsule valve face cover (BVM) is used as manual substitute, in the machine of breathing no more
When ventilation is provided in the short term.
Detailed description of the invention
Detailed description is provided with reference to attached drawing.In the accompanying drawings, the leftmost digital representation of appended drawing reference appended drawing reference
The attached drawing first appeared.Similar feature and component are quoted using identical appended drawing reference throughout the drawings.
Fig. 1 (a) shows the schematic diagram of continuous positive airway pressure (CPAP) device of the embodiment according to this theme.
Fig. 1 (b) shows continuous positive airway pressure (CPAP) device of the embodiment according to this theme.
Fig. 1 (c) shows continuous positive airway pressure (CPAP) device of the embodiment according to this theme.
Fig. 1 (d) shows the perspective view of continuous positive airway pressure (CPAP) device of the embodiment according to this theme.
Fig. 1 (e) shows the component for the stabilization unit of the embodiment according to this theme being externally arranged in room.
Fig. 1 (f) shows the perspective view of continuous positive airway pressure (CPAP) device of the embodiment according to this theme.
Fig. 2 shows according to the embodiment of this theme for providing the method for continuous positive airway pressure.
Fig. 3 (a) shows the pressure of the input air-flow of the CPAP device of the embodiment according to this theme and the figure of flow
Table.
Fig. 3 (b) shows the pressure of the output gas flow of the CPAP device of the embodiment according to this theme and the figure of flow
Table.
Fig. 3 (c) shows the CPAP dress of the manostat with T junction configuration of the embodiment according to this theme
The pressure for the output gas flow set and the chart of flow.
Fig. 3 (d) shows the output gas of the CPAP device without manostat of the embodiment according to this theme
The pressure of stream and the chart of flow.
Fig. 4 shows the lung according to the expression of the embodiment of this theme during carrying out air-breathing using CPAP and exhaling
The waveform diagram of pressure change.
Fig. 5 a and Figure 5b shows that another embodiments according to the CPAP device of the embodiment of this theme.
Specific embodiment
This theme is related to a kind of for especially providing constant pressure and air-flow in the limited environment of resource to maintain
The device of continuous positive airway pressure.Although it should be understood that explaining disclosed below hair as an example with newborn
It is bright, but continuing air flue just as from it will be readily understood that in description, the present invention can be used for providing to the patient of age groups
Pressure.
Premature, particularly those babies being born before 28 weeks period of pregnancys have undergrown lung at birth
Bubble.Existing alveolar is often not mature enough and is not enough to normal operation, and baby suffers from as agenesis of lung, respiratory distress are comprehensive
The respiratory complication of simulator sickness (RDS), chronic lung disease etc..Respiratory Distress Syndrome(RDS) (RDS), which is that one kind is common in premature, exhales
Disease is inhaled, and is started soon after birth.RDS generates insufficient immature with structure mainly due to the surface reactive material of lung
It is caused.In addition, various factors exists as gene defect, mother increase RDS with diabetes, multifetation, quick delivery etc.
Risk in newborn.The shortage of surface reactive material leads to that lung collapses at the end of expiration and baby undergoes breathing tired
It is difficult.Baby may not suck enough oxygen to support the organ of body, this may be fatal.
If not providing treatment appropriate, anoxic may damage the brain and other organs of baby.It is short of breath, heart rate
It overruns, the wall of the chest bounces back, exhale sending grunt, nasal ala flap etc. are common RDS early symptoms.As symptom deteriorates, breathing
Complication deteriorates, for example stopping or apnea and lung collapse for a long time for breathing.In these cases, breathing branch is provided
It holds until generating enough surface reactive materials in alveolar and lung can independently be breathed.
Breathing Suppotion usually autonomous respiration or ventilation stop when or the offer when there is a possibility that respiratory failure.Ventilation is
Refer to actuating of the air via air-breathing and expiration between lung, and ventilator is that one kind is designed to respirable aero-mechanical
Ground is moveable into and out the machine of lung.Ventilator is connected to respiratory siphon, which is extended by the oral area or nose of patient
Enter tracheae to assist or replace autonomous respiration.
In general, ventilator is with many different types and has different operating methods.Some common ventilation moulds
Formula includes mechanical ventilation, continuous positive airway pressure (CPAP), auxiliary mode ventilation (trigger-type ventilation), pressure support ventilalion (PSV)
Etc..There are manual respirators --- such as capsule valve face cover and anesthesia air bag ---, and it needs user that ventilator is maintained at face
Portion or artificial airway simultaneously maintain to breathe with hand.
In addition, ventilator has many different components --- such as computing device, display, controller etc. ---, it is needed
It will be from the continuous detection and assistance of expert.In addition, these ventilators increase complexity, size and with complexity and at
This associated cost.
As described above, the ventilator for being used as Breathing Suppotion has big size, is related to complicated configuration and valuableness.Cause
This, these ventilators are not Major medical mechanisms that is portable and being limited to urban area, and not in infrastructure difference
Remote geographical location or when patient in transit when use.
According to this theme, describe for providing the device and method of continuous positive airway pressure.The device and method can be used
In by having the input air-flow of variable flow and pressure to provide constant pressure and constant gas.Constant pressure and air-flow are used
Positive pressure is maintained in the air flue in the patient with respiratory distress syndrome (RDS).The device can even not touch wall sky
It is used in the case where gas and oxygen, and oxygen tank or oxygen concentrator with increased pressure can be used and implement CPAP's
Lifesaving technology is to open alveolar.Therefore, disclosed device is provided for implementing the more of continuous positive airway pressure (CPAP) technology
The form of power low cost.
It include stablizing unit, nasal intubation and valve according to the device described in the text of this theme.Stablize unit include into
Mouth port, manostat and flowmeter.Ingress port is connected to for providing the input air-flow under the flow for being in variable
The first gas source unit.First gas source unit can be to generate input air-flow manual operation device, such as capsule valve face cover,
Piston pump or foot pump.
Manostat receives input air-flow by stablizing the ingress port of unit.Manostat can be the capsule of elasticity
Shape structure such as sacculus or bellows, there are two openings for manostat tool: the first opening and the second opening.First opening receives
Air-flow is inputted, and continuous flow is discharged in the second opening.Manostat expansion and contraction are to absorb any pressure for inputting air-flow
Change and the continuous flow under controlled pressure is provided.
Flowmeter is connected to the second opening of manostat to receive continuous flow.Flowmeter provides output gas flow, should
Output gas flow has the flow through adjusting based on preset flow.Flowmeter may include the flow control valve for controlling air-flow
And actuator.For example, actuator can control flow control valve based on the difference between preset flow and gas flow, and provide
Output gas flow through adjusting.Output gas flow at the output section of flowmeter has constant flow and flows through going out for stable unit
Mouth port.
In one embodiment, stablizing unit includes the second entrance port for connecting the second gas source unit.Second
Gas source unit can be the air pump or air compressor by battery-powered.In another embodiment, third gas source unit
It can be compressed gas source or oxygen cylinder, to provide continuous flow by second entrance port.Continuous flow can be provided to flow
Meter is for generating the output gas flow through adjusting.In another embodiment, stablizing unit can be enclosed in outside cabin.It is external
Room can be configured to allow for operator cosily to keep the device during operation in a manner of meeting ergonomics.
In addition, the outlet port for stablizing unit is connected to nasal intubation and valve.Nasal intubation is light pipe, on one end
It is connected to the outlet port of stable unit and is divided into two pins being placed in nostril on the other end.Pipe reception comes from
Stablize the output gas flow of unit and output gas flow is conveyed to patient.In addition, valve can be pressure-control valve, pressure control
Valve is attached in conjunction with nasal intubation for maintaining positive pressure in the lung of patient.Pressure-control valve is breathed out by control from lung
Air-flow maintain positive pressure.In one embodiment, pressure-control valve connection has humidifier to couple to humidify and be supplied to patient
Output gas.
It in view of above-mentioned, provides for providing the device and method of continuous positive airway pressure (CPAP), device and method letter
It is single, cost-effective and easy to operate.CPAP device is portable and can be used in the limited environment of resource, such as door
Clinic and it possibly can not provide the emergency, such as in the car of ventilator.In addition, CPAP device is the dress of more power
It sets, and CPAP device can use in a manner of manually or electrically.CPAP device can also include as temperature monitoring module, oxygen
The independent individual module such as saturation block, pulse monitoring modular, so that each independent individual module has the control of oneself
Device, sensor, display and battery supply processed.In addition, the device does not need expert's auxiliary and can be in position from far-off regions
It sets and lacks and used in the region of medical infrastructure.
Fig. 1 (a) shows the schematic diagram of continuous positive airway pressure (CPAP) device 100 of the embodiment according to this theme,
And Fig. 1 (b) shows the figure of continuous positive airway pressure (CPAP) device 100.CPAP device 100 includes stablizing unit 102, first
Gas source unit 104 and patient interface unit 106.Stablize unit 102 include first entrance port 108, manostat 110 with
And flowmeter 112.First entrance port 108 is connected to for providing the first gas source of the input air-flow under the flow for being in variable
Unit 104.First gas source unit 104 can be the device of the manual operation to generate input air-flow, such as capsule valve face cover, work
Plug pump or foot pump.
Manostat 110 is connected to first entrance port 108 to receive input air-flow.In one embodiment, single
It can connect between the first gas source unit 104 and manostat 110 to valve.Manostat 110 can be the capsule of elasticity
Shape structure --- such as sacculus or bellows, there are two openings for the tool of manostat 110: the first opening and the second opening.First
Opening receives input air-flow, and continuous flow is discharged in the second opening.The expansion of manostat 110 and contraction are to absorb input air-flow
Any pressure change and the continuous flow under the controlled pressure is provided.In one embodiment, first opening and
Second opening can couple with collet to provide the secured connection with connecting pipe, and connecting pipe can be used for stable connection unit
102 component.
Flowmeter 112 is connected to the second opening of manostat 110 to receive continuous flow.Flowmeter 112 provides defeated
Air-flow out, the output gas flow have the flow through adjusting based on preset flow.Flowmeter 112 may include flow control valve and
Actuator, for controlling air-flow.
In one embodiment, the second opening of manostat 110 is connected with pressure reducing valve 114.Pressure reducing valve 114 ensures
Controlled pressure is maintained in CPAP device 100.When in the pressure in device, particularly route after manostat 110
Pressure anomaly when increasing or when generating excessively high pressure in route, a part of air is by bypass transfer or is discharged into
In atmosphere.This makes the part that do not discharge of excessively high pressure reduction and air flow to flowmeter 112.
In addition, flowmeter 112 can connect pressure gauge 116, which is used to measure the pressure of output gas flow application
Power.The output gas flow generated by flowmeter 112 has the flow of constant and flows through the outlet port of stable unit 102
118.In one embodiment, manostat 110, flowmeter 112, pressure reducing valve 114 and pressure gauge 116 may include
Stablize in unit 102.
In addition, the outlet port 118 for stablizing unit 102 is connected with nasal intubation 120 and valve 122.Nasal intubation 120 is lightweight
Pipe, is connected to the outlet port 118 of stable unit 102 on one end and is divided on the other end and be placed in nostril
In two pins.Pipe receives the output gas flow for carrying out self-stabilization unit 102 and output gas flow is conveyed to patient.In addition, valve
122 can be pressure-control valve, which is attached to be connected with nasal intubation 120 to maintain just in the lung of patient
Pressure.Pressure-control valve maintains positive pressure by controlling the air-flow breathed out from lung.In one embodiment, pressure-control valve joins
Humidifier is connected to humidify the output gas for being provided to patient.
Fig. 1 (c) shows the CPAP device 100 according to the embodiment of this theme.CPAP device 100 includes stablizing unit
102, the first gas source unit 104 and patient interface unit 106.In one embodiment, the first gas source unit 104 includes mentioning
One of capsule valve face cover, oxygen cylinder and piston pump assembly for input air-flow or more person.In one example, the first gas
Source unit 104 includes receiving gas from oxygen cylinder and piston pump assembly and providing the mixing of oxygen and air to unit 102 is stablized
The Venturi tube of object.And hence it is also possible to be rich in the air of oxygen by the supply of the first gas source unit 104.
In one embodiment, stablizing unit 102 can be enclosed in outside cabin 124.Outside cabin 124 can be with symbol
The mode for closing ergonomics is configured to allow for operator cosily to keep CPAP device 100 during operation.As shown,
The fenced stable unit 102 of outside cabin 124, pressure reducing valve 114 and pressure gauge 116.In addition, in one embodiment, pressure is steady
Determining device 110 can be enclosed in interior chamber 126.Interior chamber can also include input flow rate indicator (not shown in FIG.),
The input flow rate indicator may include moveable baffle plate, multiple labels and form, as being discussed later.
In one embodiment, E module 128 can be used dismountable mechanism and be connected to outside cabin 124.E module 128
It may include the air compressor 130 for being connected to battery 132 and electric interfaces (not shown in FIG.).Air compressor 130 can
To be attached to the second entrance port 134 of stable unit 102 and provide the continuous flow with minimum pressure variation.At one
In example, air-flow can be provided directly to flowmeter 112 via engagement port 136.Engagement port 136 may include a pair of unidirectional
Valve --- a check valve is used to provide the connection between manostat 110 and flowmeter 112 and another check valve is used
Connection between offer second entrance port and flowmeter 112.Check valve is prevented by manostat 110 and/or the second gas
The reverse flow for the air that source unit 130 provides.
The output gas flow generated by flowmeter 112 has the flow of constant and flows through the outlet of stable unit 102
Port 118.As previously mentioned, the outlet port 118 for stablizing unit 102 is connected to patient interface unit for providing just to patient
Pressure.E module 128 can be used in combination with the first gas source unit 104 or E module 128 can be used independently.
Fig. 1 (d) shows the perspective view of the CPAP device of the embodiment according to this theme.As shown, outside cabin 124
The component of fenced stable unit 102, these components by compactly connect and it is fenced, with provide have optimization size, shape and
The design for meeting ergonomics of weight.Outside cabin 124 is provided with the handle 138 at the top of outside cabin 124, to
Lift CPAP device 100.Since CPAP device 100 includes such as manostat, flowmeter, pressure gauge etc. not heavy component,
Therefore handle 138 is enabled the operator to the smallest power lifting device.
In addition, outside cabin 124 is provided with form 140, for providing the clearly visual field of manostat 110.One
In a embodiment, form 140 may include positioning indicator (not shown in FIG.).Positioning indicator may include moving
Baffle plate and multiple labels, to be used to indicate the state of manostat 110.Manostat 110 can be placed in and be connected to
Below the removable baffle plate of multiple labels.Each label can indicate the state of manostat.
For example, the label with different colours can serve to indicate that the volume of air inside manostat 110.First is red
Colour code label can serve to indicate that the volume of air inside manostat 110 is less than minimum threshold amount, and the second red-ticket can be with
It is used to indicate the volume of air inside manostat 110 and is greater than max-thresholds amount, and green-ticket can serve to indicate that pressure
Volume of air inside power stabilizer 110 is in desired working range, that is, is greater than minimum threshold amount and is less than max-thresholds
Amount.
In operation, input air-flow is depended on, a label in multiple labels can be seen by form 140.For example,
Initially, indicate that the volume of air in manostat 110 may be visible less than the first red-ticket of minimum threshold.When
When receiving input air-flow, as manostat 110 expands, baffle plate displacement is moved, and correspondingly, label is mobile,
So that green-ticket becomes visible after volume of air increases to greater than minimum threshold.As manostat 110 is further swollen
Swollen, label can be moved further, be become so that instruction volume of air has increased for the second red-ticket more than max-thresholds
It obtains visible.
As it will be appreciated, the volume of air in manostat 110 depends on the pressure of input air-flow.Therefore, work as label
Volume of air is indicated when except working range, operator can change input stream pressure so that volume of air is in working range
It is interior.Therefore, the input flow rate indicator in form 140 with simple and compact arragement construction can enable the operator to
The input air-flow to provide by the first gas source unit 104 is provided.
In another embodiment, positioning indicator may include switching device and a pair of of baffle plate.Manostat 110
It can be placed between vertical a pair of of the baffle plate for being spaced apart and disposing generally parallel to each other.Being spaced between baffle plate
Manostat 110 increases when expanding, and reduces when manostat 110 is shunk.If manostat is due to high pressure
And expanding singularly more, then in baffle plate a baffle plate can be contacted with soft-touch control to indicate manostat
Big volume of air present in 110.
Fig. 1 (e) shows the portion for the stabilization unit 102 of the embodiment according to this theme being externally arranged in room 124
Part.As shown, the component of CPAP device 100 is compactly arranged and is connected.In addition, the physical parameter of component can be in device
Operation during additional benefit is provided to operator.
For example, manostat 110 can most preferably occupy outside cabin 124 with oval shape, the elliptical shape
Volume and therefore arrange that other component compactly.In other embodiments, manostat 110 can be in other shapes
Shape, such as spherical shape, cylindricality etc..In addition, manostat 110 can be by caoutchouc latex, neoprene or elastic material system
At to provide higher elongation, tensile strength and extended service life.
For example, Tables 1 and 2 shows the relaxation for determining manostat 110 based on the use of manostat 110
Henan time and the one group of experimental result carried out.Relaxation time, which refers to, provides the time quantum of constant pressure by manostat.
As it appears from the above, manostat 110 experienced a large amount of circulation (about 1000 times), still, manostat 110
45 seconds minimum relaxation times are produced in the case where no failure.
As it appears from the above, even if 25 times expansion and shrink circulation after, manostat 110 also no failure/collapse simultaneously
And meets all functional requirements in the case where thickness reduction maximum 25% and work.
In one embodiment, as shown in Fig. 1 (f), the different components of CPAP device are similar to as referring to Fig.1 (d)
As Fig. 1 (e) description, but it is arranged to form approximate horizontal shell.In addition, it includes pallet 135 that CPAP device, which has,
Profile, newborn is maintained on device.This makes CPAP device 100 be easier to use during transportation.
Fig. 2 shows for providing the method 200 of continuous positive airway pressure.Described method 200 is about CPAP above-mentioned
Device 100 is consistent, it being understood, however, that, this method 200 can also be implemented in other devices.
At frame 202, input air-flow is supplied by the first gas source unit 104 to manostat 110.Input air-flow has
It variable flow and can be supplied by piston pump assembly.Input air can flow to entering for stable unit 102 by check valve
Mouth port.
At frame 204, stablize the flow of input air-flow by stablizing unit 102.Manostat 110 has first to open
Mouthful, which receives the input air-flow from the first gas source unit 104 and absorbs input air-flow by expanding and shrinking
Changes in flow rate.Continuous flow of the second opening release of manostat 110 under controlled pressure.
At frame 206, flowmeter 112 generates the output gas flow through adjusting based on preset flow.From manostat 110
The air of release flows to flowmeter 112.Flowmeter 112 includes flow control valve, and the flow control valve is according to air mass flow and in advance
If the difference between flow provides controlled output gas flow by means of actuator.Output gas of the flow through adjusting is generated based on this
Stream.
At frame 208, output gas flow is conveyed to patient by nasal intubation 120 from the outlet port 118 for stablizing unit 102.
Nasal intubation 120, which can be, provides the light pipe of the smallest friction to output gas flow.
At frame 210, the valve 122 by being connected to nasal intubation 120 maintains positive pressure.Nasal intubation 120 could be attached to humidification
Device is to humidify output gas flow.Valve 122 maintains the positive pressure in lung by the air capacity that patient breathes out by control.
In addition, the merging number obtained from different experimental analyses has been disclosed referring to the above embodiment of this theme
According to.Experimental analysis be related to by change CPAP device configuration come measure as pressure, flow, volume parameter.
Fig. 3 (a) and Fig. 3 (b) respectively illustrates the pressure of the pressure of input air-flow and the variation of flow and output gas flow
With the variation of flow.In one embodiment, gas source unit 104 is manual pumping unit, and manostat 110 is ball
Capsule.The output end of manual pumping unit is connected to the pressure of measurement input fluid and the pressure gauge 116 and flowmeter of flow
112.The measured value of the pressure and flow at different location in device is shown in the table 1, table 2 and table 3 of lower section.In this point
In analysis, the variation of pressure and flow is checked by repeating 5 record measured values of experiment.
As shown in table and Fig. 3 (a) and Fig. 3 (b), the variation of output pressure and output flow is controlled, and
Constant pressure limit and range of flow are realized at the output section of sacculus.It is connected to the flowmeter 112 of the second opening of sacculus
Generate flow and pressure through adjusting.Therefore, CPAP device 100 provides the output gas flow with constant pressure and flow, should
Output gas flow is from the input air-flow with variable pressure and flow.
In another experimental analysis, triple valve can be used in CPAP device 100.Triple valve is provided at remaining port
It connects manual pumping unit, stablize the flowmeter 112 of unit 102 and the T junction configuration of sacculus.By being connected to gas source unit
The input pressure and inlet flow for the input air-flow that 104 pressure gauge 116 and flowmeter 112 measurement is provided by manual pumping unit
Amount.Fig. 3 (c) shows the variation of the pressure and flow realized by the CPAP device 100 with T junction configuration, and table 4
Provide the measured value of pressure and flow at input unit and output section.In the analysis, by repeating to test 5 record measurements
Value checks the variation of pressure and flow.
Pressure and flow are measured by applying 30 strokes per minute in manual pumping unit.It is mentioned when by gas source unit
When for input gas, sacculus only partially expansion or shrinkage.Therefore, the output of pulsation is generated by the device, that is, pressure and flow
It is not constant and cannot act as Breathing Suppotion.
In another experimental analysis, sacculus is removed to study the performance of CPAP device.Fig. 3 (d), which is shown, not to press
The variation of the pressure and flow in CPAP device 100 in the case where power stabilizer 110 i.e. sacculus.By being connected to manual pumping
The pressure gauge 116 and flowmeter 112 of unit measures input pressure and input flow rate.It is per second in manual pumping unit to apply 30
Pressure and flow are measured in the case where secondary stroke.In the following, table 5 provides the measurement of pressure and flow at input unit and output section
Value.
Manostat 110 provides the mechanism of absorption pressure variation and provides the lasting stream under controlled pressure.Cause
This, in the case where lacking such pressure and flow absorbing mechanism, CPAP device 100 provides the output of pulsation.
In addition, having carried out another experimental analysis to compare the performance of capsule valve face cover Yu manual pumping unit.Capsule valve face cover tool
There are the three types based on its capacity classified: adult type capsule valve face cover, child form capsule valve face cover and infantilism capsule valve face cover.It exhales
Suction air is used as manostat 110 in analysis.In addition, breathing bag can be latex type or non-dairy glue-type.
Experimental analysis has been determined by the maximum pressure of capsule valve face cover and the offer of manual pumping unit.In addition, experimental analysis is also
Extruding or number of stroke and the relaxation time needed for generating constant pressure has been determined.
Manual pumping unit provides maximum pressure and relaxation time.In addition, manual pumping unit needs less number of stroke
So that CPAP device provides constant pressure and air-flow, although manual pumping unit has relatively small volume.Although baby
Type capsule valve face cover is easy to squeeze, but when infantilism capsule valve face cover is as gas source unit 104, CPAP device 100 can not be provided
Constant pressure.
In addition, the volume of different pressures stabilizer 102 has been determined in another experimental analysis.The analysis is by comparing conduct
The sacculus of manostat is executed with breathing bag, and data are shown in table 7 and table 8.In an experiment, pumping is single manually
Member is connected to sacculus or breathing bag, and the sacculus or breathing bag are connected to flowmeter 112 and pressure gauge 116.
The volume of gas present in sacculus and breathing bag is calculated by perfect gas law.It is fixed according to perfect gas
Rule,
PV=nRT, or
V=nRT/P
Wherein,
P is the pressure of gas,
V is the volume of gas,
N is the amount (also referred to as molal quantity) of the substance of gas
R is ideal gas constant or universal gas constant, is equal to multiplying for Boltzmann constant and avogadros constant
Product.
T is the temperature of gas.
In addition, the pressure in sacculus is calculated by pressure gauge 116.Pressure gauge 116 can connect to the second opening of sacculus
To measure the pressure of the air in sacculus.
The expansion of both sacculus and breathing bag and contraction are changed with absorption pressure and are provided under controlled pressure
Continuous flow.However, sacculus can store bigger volume of air than breathing bag, and breathing bag can be subjected to more than sacculus
Big air pressure.
Fig. 4 shows the waveform for indicating lung's pressure change during air-breathing and expiration.Waveform 402 is indicated in no CPAP
Lung's pressure change in the case where device 100 during breath cycle.Respiratory is the pressure change and volume change of lung
Result.As lung's pressure reduces, the volume of lung increases and air is flowed into lung from atmosphere.On the other hand, by
It is retracted in the elasticity of lung tissue, leads to the increase of lung's pressure and the reduction of volume, to generate the process of expiration.Cause
This, air flows out to atmosphere from lung.In waveform 402, indicated by the posivtive spike duty pressure that lung's expiration applies by E, and
The negative peak duty pressure of air-breathing is indicated by I.
Waveform 404 indicates lung's pressure change with CPAP device 100 during breath cycle.CPAP dress
Set 100 maintains positive pressure to prevent the alveolar collapse in lung in lung.In waveform 404, minimum positive pressure is indicated by I.Therefore,
Positive pressure is maintained at expiration end by CPAP device.
Fig. 5 (a) and Fig. 5 (b) show the another embodiment of the CPAP device 500 according to the embodiment of this theme.
Fig. 5 (a) shows the external view of device, and Fig. 5 (b) shows the interconnection of component and component.Fig. 5 (a) and Fig. 5
(b) device 500 shown in corresponds to another embodiment of foregoing device 100.
As shown in Fig. 5 (a), device 500 includes input port 504 and output port 506, and input port 504 can connect
To ambu bag (Ambubag) or other manual oxygen/air input units, output port 506 can be used for providing to baby
Forced air/oxygen.Device 500 has various shells, such as upper body 508-1, aft case 508-2, bottom shell
508-3, front shell 508-4 and airbag housing 508-5, these shells form the outer circumferential of device 500.Power switch
510 can be used for turning on/off device 500.516 monitoring device of flowmeter 512, LED panel 514 and pressure gauge can be used
Work.It is manually entered source manually to be connected to other than being manually entered source or replace furthermore, it is possible to which oxygen gas port 518 is arranged
Pressurised oxygen gas source.Fig. 5 (b) shows the various parts of device 500 --- including ambu bag, oxygen cylinder, various valves and
Manostat such as sacculus --- between interconnection.
It should be understood that the CPAP device as described in various embodiments above can also have in addition to about various
Various other features except those features described in embodiment.For example, the device can have built-in oxygen concentration
Device and air-oxygen mixer/mixing machine.In addition, the device can have built-in active humidifier to provide heat to newborn
Humidification gas.Other than using pressure gauge, which can also be detected lung's resistance and be controlled using pressure sensor
The outflow or/and pressure of product.In addition, the device can have electronic/mechanical control intermediate pressure and flow export with
And the cpap pressure control based on built-in bubble.
Device according to various embodiments can be used for the recovery of newborn and pediatric population.Although referring to some
This theme has been described in detail in example and these example embodiments, but other embodiments are also possible.In this way,
The range of this theme is not limited to the description of preferable example and embodiment wherein included.
Claims (22)
1. a kind of continuous positive airway pressure (CPAP) device (100), comprising:
Stablize unit (102), the stable unit (102) includes:
First entrance port (108), the first entrance port (108) receive the input air-flow under changeable flow；
Manostat (110), the manostat (110) are used to stablize the pressure of the input air-flow, wherein the pressure
Power stabilizer (110) receives the input air-flow, and the manostat by the first entrance port (108)
(110) pressure change that the input air-flow is absorbed by expanding and shrinking, to provide holding under controlled pressure
Continuous air-flow；And
Flowmeter (112), the flowmeter (112) receive the air from the manostat (110) and by described
The outlet port (118) for stablizing unit (102) provides output gas flow of the flow through adjusting based on preset flow；
Nasal intubation (120), the nasal intubation (120) are connected to the outlet port (118) of the stable unit (102) to connect
Receive the output gas flow；And
Valve (122), the valve (122) are connected to the nasal intubation (120) to maintain end-expiratory positive pressure.
2. CPAP device (100) according to claim 1 further includes the first gas for being connected to the ingress port (108)
Source unit (104), wherein first gas source unit (104) operates into offer under changeable flow in a manual fashion
The input air-flow.
3. CPAP device (100) according to claim 2, wherein first gas source unit (104) includes to from oxygen
Gas cylinder and piston pump assembly receive gas and provide the venturi of the mixture of oxygen and air to the stable unit (102)
Pipe.
4. CPAP device (100) according to claim 2, wherein first gas source unit (104) is piston pump group
One of part, capsule valve face cover and foot pump or more person.
5. CPAP device (100) according to claim 2 further includes being located at the stable unit (102) and described first
Check valve between gas source unit (104).
6. CPAP device (100) according to claim 1, wherein the stable unit (102) includes to receiving air-flow
Second entrance port (134).
7. CPAP device according to claim 6 further includes E module (128), wherein the E module (128) includes:
Battery (132)；And
Second gas source unit (130), second gas source unit (130) are energized by the battery (132) and are connected to institute
Second entrance port (134) is stated for providing the continuous flow being under controlled pressure.
8. CPAP device (100) according to claim 7, wherein second gas source unit (130) includes air compression
At least one of device or air pump.
9. CPAP device (100) according to claim 1, further includes third gas source unit, wherein the third gas source list
Member includes oxygen cylinder or compressed gas source.
10. CPAP device (100) according to claim 1, wherein the flowmeter (112) includes:
Flow control valve, the flow control valve control the flow of the output gas flow；And
Actuator, the actuator are based on the preset flow and activate the flow control valve.
11. CPAP device (100) according to claim 1, wherein the manostat (110) includes:
First opening, first opening receive the input air-flow；And
Second opening, the second opening discharge continuous flow.
12. CPAP device (100) according to claim 11, wherein the stable unit (102) includes pressure reducing valve
(114), the pressure reducing valve (114) is connected to second opening of the manostat (110) so that the CPAP device
(100) excess pressure in reduces.
13. CPAP device (100) according to claim 1, wherein the stable unit (102) includes pressure gauge
(116), the pressure gauge (116) is connected to the flowmeter (112) to measure the pressure of the output gas flow.
14. CPAP device (100) according to claim 1, wherein the valve (122) is pressure-control valve, the pressure
Control valve is connected to the nasal intubation (120) to maintain 5cm H2The end-expiratory positive pressure of O.
15. CPAP device (100) according to claim 14, wherein the pressure-control valve is connected with humidifier to add
The wet output gas flow.
16. one kind is for providing the method for continuous positive airway pressure (CPAP), which comprises
It selects gas source unit (104,130)；
When selecting the first gas source unit (104), by first gas source unit (104) by the input gas with changeable flow
Stream is supplied to manostat (110)；
Changed by the expansion and contraction of the manostat (110) with absorption pressure and is provided under controlled pressure
Continuous flow stablize the input air-flow；
Output gas flow of the flow through adjusting is generated based on preset flow by flowmeter (112)；
The output gas flow generated by the flowmeter (112) is conveyed to patient by nasal intubation (120)；And
The pressure for being equivalent to end-expiratory positive pressure is maintained by valve (122).
17. according to the method for claim 16, wherein when selecting the second gas source unit (130), pass through air compressor
Or air pump provides the input air-flow of constant flow rate.
18. according to the method for claim 16, wherein when selecting third gas source unit, pass through oxygen cylinder or compressed gas
The input air-flow of source offer constant flow rate.
19. according to the method for claim 16, wherein the input air-flow by being operably connected to institute in a manual fashion
It states first gas source unit (104) of manostat (110) and supplies.
20. according to the method for claim 16, wherein the expansion and contraction of the manostat (110) absorb by
The excess pressure that the input air-flow applies.
21. according to the method for claim 16, wherein the output gas flow of the flow through adjusting passes through the flowmeter
(112) aperture generates.
22. according to the method for claim 16, wherein end-expiratory positive pressure is tieed up by controlling the air-flow breathed out from lung
It holds.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN201741002181 | 2017-01-19 | ||
| IN201741002181 | 2017-01-19 | ||
| PCT/IN2018/050029 WO2018134849A1 (en) | 2017-01-19 | 2018-01-19 | Continuous positive airway pressure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110520181A true CN110520181A (en) | 2019-11-29 |
Family
ID=62908461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880007344.1A Pending CN110520181A (en) | 2017-01-19 | 2018-01-19 | Continuing positive airway pressure unit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110520181A (en) |
| WO (1) | WO2018134849A1 (en) |
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| CN106039518B (en) * | 2010-04-27 | 2020-01-10 | 费雪派克医疗保健有限公司 | Water shortage alarm |
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| DE2107129A1 (en) * | 1970-04-13 | 1971-10-28 | Siemens Ag | Device for generating gas flows |
| EP0744184A1 (en) * | 1995-05-24 | 1996-11-27 | Siemens-Elema AB | Reservoir for a gas in a ventilator/anaesthetic system |
| CN1498124A (en) * | 2001-04-12 | 2004-05-19 | Continuous positive airway pressure device | |
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|---|---|
| WO2018134849A1 (en) | 2018-07-26 |
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