CN106267497B - A kind of high-accuracy ventilation flow rate control system and medical breathing machine - Google Patents
A kind of high-accuracy ventilation flow rate control system and medical breathing machine Download PDFInfo
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- CN106267497B CN106267497B CN201610925331.5A CN201610925331A CN106267497B CN 106267497 B CN106267497 B CN 106267497B CN 201610925331 A CN201610925331 A CN 201610925331A CN 106267497 B CN106267497 B CN 106267497B
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- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 29
- 238000009423 ventilation Methods 0.000 title claims abstract description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 210000004072 lung Anatomy 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000001225 therapeutic effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 208000004756 Respiratory Insufficiency Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 201000004193 respiratory failure Diseases 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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. 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
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/202—Controlled valves electrically actuated
-
- 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
- A61M2016/0042—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the expiratory 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/10—General characteristics of the apparatus with powered movement mechanisms
-
- 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
- A61M2205/33—Controlling, regulating or measuring
Abstract
The invention discloses a kind of high-accuracy ventilation flow rate control system and medical breathing machines, it includes pedestal, and left upper end is provided with threeway seat；Threeway seat upper end is provided with threeway；Threeway includes the liberation port of the air inlet of left end, the pneumostome of upper end and right end；Threeway is fixed on by anchor ear on threeway seat；The upper right side of pedestal is provided with electric machine support；Electric machine support right end is provided with stepper motor；Stepper motor left end is connected with ball screw；Impeller-hub is connected on ball screw；The left end of impeller-hub is provided with the piston being connected to each other with liberation port；Piston is truncated cone-shaped structure, and is coaxial arrangement between liberation port.The object of the present invention is to provide a kind of high-accuracy ventilation flow rate control system and medical breathing machines, it is simple in structure, production cost is low, noise is small, gradually can adjust and maintain release gas discharge area, pressure and flow to lung ventilator realize accurate control, by pressure and flow-rate adjustment to optimum state, the therapeutic effect of lung ventilator is improved.
Description
Technical field
The invention belongs to medical instruments field, specially a kind of high-accuracy ventilation flow rate control system and medical breathing machine.
Background technology
In current clinical medicine, effective means of the lung ventilator as an energy artificial substituting expiratory positive airway pressure function is general
All over for the respiratory failure caused by a variety of causes, the anesthesia respiration management during major operation, Breathing Suppotion treatment and emergency resuscitation
In, highly important position is occupied in Modern Medical Field.Lung ventilator, which is one kind, can play prevention and treatment respiratory failure,
Complication is reduced, the vital Medical Devices of patients ' lives are saved and extend.
Traditional lung ventilator mostly uses greatly proportioning valve and controls output pressure and flow, its shortcoming is that, structure is multiple
Miscellaneous, production cost is high, and the gas discharge area of liberation port is non-adjustable, and the control accuracy of pressure and flow is low；In addition, most of ratios
Example valve controls liberation port using the larger solenoid valve of noise, influences the rest of patient；Work as patient flow or pressure simultaneously
When power demand is smaller, the gas of patient's exhalation can not be quickly excluded so that pressure deviates from setting value, shadow when patient exhales
Ring therapeutic effect.
By patent retrieval, following documents can be obtained：
Patent 1：
Application number：CN201110310467.2, the applying date：2011.10.13 applicant:Suzhou Kai Ditai medical science and technologies have
Limit company, publication date：2012.06.20.The invention discloses a kind of Electromagnetic Control three-way flowrate valve and medical breathing machine, electromagnetism
It includes port, liberation port and pneumostome to control three-way flowrate valve.It is provided with admission air valve between port and pneumostome, breathes
Mouthful and liberation port between be provided with expiration valve, admission air valve and expiration valve are adjusted with interaction relation, admission air valve and
Expiration valve is hollow out cylinder nested structure, including the fixed cylinder and sliding cylinder nested together, admission air valve and outlet valve
The sliding cylinder of door is connected with electromagnetic driver, to realize the synchronous control to admission air valve and expiration valve opening degree.It is medical
After lung ventilator is connected with above-mentioned Electromagnetic Control three-way flowrate valve, the unlatching journey of adjusting admission air valve and expiration valve can be passed through
Degree, controls the pressure and flow of air-breathing and expiration, real to maintain appropriate pressure or flow in air-breathing and expiration phase
Existing medical breathing machine double horizontal pressure controls and flow control, it is simple in structure, easy to use, control is accurate, saves power consumption.
Patent 2：
Application number：201410072610.2 the applying date：2014-02-28, applicant:Beijing friendship peace medical system share has
Limit company, publication date：2015-09-02.The invention discloses a kind of outlet valve and with its lung ventilator, which includes：
Valve body, vapour lock, stainless steel valve port, flap valve diaphragm and valve deck.It is formed with inlet channel in valve body and can be connected to inlet channel
Outlet passageway, and inlet channel has inlet channel air inlet and inlet channel gas outlet；Vapour lock is located in inlet channel；It is stainless
Steel valve port is located at the inlet channel gas outlet of valve body, and the inlet channel gas outlet of valve body is stretched out in one end of stainless steel valve port；
Flap valve diaphragm is movably located on valve body between the position for opening and closing stainless steel valve port；Valve deck is located on valve body, and
Valve deck compresses the edge of flap valve diaphragm with valve body cooperation, and valve deck is equipped with through-hole.Outlet valve according to the ... of the embodiment of the present invention improves
The sealing performance of flap valve diaphragm and stainless steel valve port, valve port open and close accurate and reliable, can accurately calculate outlet valve and exhale
Enter and breathe out tidal volume values, to patient with comfortable breathing pattern.
Patent 3：
Application number：201010562279.4 the applying date：2010.11.21 applicant:Zhejiang jade, which rises medical instrument share, to be had
Limit company, publication date：2011-03-09.The present invention relates to a kind of control valve for lung ventilator airline pressure and flow-rate adjustment,
It includes valve body, spool, distribution sliding sleeve, motor and wind turbine exhaust pipe, it is characterised in that motor is equipped with motor anti-vibration sleeve and electricity
Machine set, motor shaft are equipped with magnetosphere and Hall sensor, are equipped with distribution sliding sleeve on the outside of the spool, there is certain work therebetween
Gap is moved, rack is connected on distribution sliding sleeve, is equipped with guide rail below rack, which is meshed with motor gear, distribution sliding sleeve
It is equipped with alignment sensor and sealing ring and lid, partition board is equipped among the hollow spool, is distinguished on the spool of partition board both sides
It, can be with valve at least provided with two air distribution holes, the air distribution hole on the same circumference of distribution sliding sleeve equipped with gas vent and air admission hole
Gas vent and air admission hole difference on core is corresponding；With it is of simple structure and low cost, use when noise it is small, safe and reliable, energy
The advantages of realizing stepless voltage regulation.
Patent in documents does not disclose the technical solution of this patent, cannot destroy the novelty of this patent, simultaneously
The combination of the above documents can not destroy the creativeness of this patent.
Invention content
The purpose of the present invention is in view of the above problems, a kind of high-accuracy ventilation flow rate control system of offer and medical respiration
Machine, it is simple in structure, production cost is low, noise is small, gradually can adjust and maintain release gas discharge area, to lung ventilator
Pressure and flow realize accurate control, by pressure and flow-rate adjustment to optimum state, improve the therapeutic effect of lung ventilator.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of high-accuracy ventilation flow rate control system, it includes pedestal 1, and left upper end is provided with threeway seat 3；The threeway
The upper end of seat 3 is provided with threeway 2；The threeway 2 includes air inlet 201, the pneumostome 202 of upper end and the release of right end of left end
Mouth 203；The threeway 2 is fixed on by anchor ear 9 on threeway seat 3；The upper right side of the pedestal 1 is provided with electric machine support 4；It is described
The right end of electric machine support 4 is provided with stepper motor 5；The left end of the stepper motor 5 is connected with ball screw 6；The ball wire
Impeller-hub 7 is connected on bar 6；The left end of the impeller-hub 7 is provided with the piston 8 being connected to each other with liberation port 203；The piston 8
For truncated cone-shaped structure, and it is coaxial arrangement between liberation port 203.
Further, the impeller-hub 7 includes left axle section 701 and right axis section 702；The piston 8 is fixed on left axle section 701
Left end；The right end of the right axis section 702 is provided with circular hole 703；The ball screw 6 is arranged in circular hole 703.
Further, the piston 8 uses 35 degree of silica gel, it includes frustum cone side 801, round platform upper bottom surface 802 and round platform
Bottom surface 803；Multiple air channels 804 being evenly arranged are provided on the frustum cone side 801；The notch of the air channel 804
Size gradually collapses to a bit from round platform upper bottom surface 802 to the direction of round platform bottom surface 803.
Further, it is fixed with spring base 13 in the liberation port 203；The spring base 13 includes flange 1302 and connection
In the cylinder 1301 of 1302 left end of flange；It is provided with compressed spring between 2 inner wall of the pipe of outer wall and threeway of the cylinder 1301
12；12 right end of the compressed spring is connected with sliding block 11；The sliding block 11 and the inner wall of the pipe of threeway 2 contact with each other；The cunning
The right end of block 11 is provided with rubber pad 10.
Further, the sliding block 11 includes becket 1101 and rubber ring 1102；The rubber ring 1102 is arranged in gold
Belong to the inside of ring 1101, and is in be wholely set with becket 1101；The medial surface setting of the rubber ring 1102 is tapered, and should
Taper is consistent with the taper of 8 frustum cone side of piston to be matched.
Further, the rubber pad 10 is ring body structurc, and the ring body structurc is by lateral surface 1001,1002 and of interior right side
Interior left side 1003 forms；The lateral surface 1001 is fixed on the inner wall of threeway 2, the end face of right side and liberation port 203
Concordantly；The interior right side 1002 is arranged tapered, and the taper is consistent with the taper of 8 frustum cone side of piston matches；In described
Left side 1003 and the angle of horizontal direction are 3~5 °.
Further, the threeway seat 3 is rectangular parallelepiped structure, and the upper end is provided with three for positioning and locking for threeway 2
Logical fixing groove 301.
A kind of medical breathing machine, the medical breathing machine are connected with above-mentioned high-accuracy ventilation flow rate control system, this is medical to exhale
The gas vent of suction machine is connect with air inlet 201, and the breathing mask of the medical breathing machine is connect with pneumostome 202.
Further, it is provided with gas flow transducer in the pneumostome 202.
Further, the gas flow transducer in the pneumostome 202 is electrically connected with the control unit of the stepper motor 5.
Beneficial effects of the present invention：A kind of high-accuracy ventilation flow rate control system provided by the invention and medical breathing machine,
Simple in structure, production cost is low, can be by between the frustum cone side of step motor control piston and the liberation port end face of threeway
Respiratory flow and the opened loop control of pressure are realized in folding between folding and the frustum cone side and rubber annular conical surface of piston；Together
When release gas discharge area gradually can be adjusted and maintain, realize and be precisely controlled；Air channel sets on piston
It sets, gas is contributed to uniformly to be discharged, while having the function of reducing noise.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the partial enlarged view A in Fig. 1.
Fig. 3 is the structural schematic diagram of impeller-hub and piston in the present invention.
Fig. 4 is the schematic top plan view of piston in the present invention.
Fig. 5 is the cross section view B-B in Fig. 1.
Fig. 6 is the structural schematic diagram of threeway seat in the present invention.
Fig. 7 is the structural schematic diagram of spring base in the present invention.
Fig. 8 is the structural schematic diagram of sliding block in the present invention.
Fig. 9 is the structural schematic diagram of rubber pad in the present invention.
Label character described in figure is expressed as：1, pedestal；2, threeway；3, threeway seat；4, electric machine support；5, stepper motor；
6, ball screw；7, impeller-hub；8, piston；9, anchor ear；10, rubber pad；11, sliding block；12, compressed spring；13, spring base；
201, air inlet；202, pneumostome；203, liberation port；301, threeway fixing groove；701, left axle section；702, right axis section；703, circle
Hole；801, frustum cone side；802, round platform upper bottom surface；803, round platform bottom surface；804, air channel；1001, lateral surface；1002, interior
Right side；1003, interior left side；1101, becket；1102, rubber ring；1301, cylinder；1302, flange.
Specific implementation mode
In order to make those skilled in the art more fully understand technical scheme of the present invention, below in conjunction with the accompanying drawings to the present invention into
The description of row detailed description, this part is only exemplary and explanatory, should not there is any limitation to protection scope of the present invention
Effect.
As shown in figs. 1 to 9, concrete structure of the invention is：
A kind of high-accuracy ventilation flow rate control system, it includes pedestal 1, and left upper end is provided with threeway seat 3；The threeway
The upper end of seat 3 is provided with threeway 2；The threeway 2 includes air inlet 201, the pneumostome 202 of upper end and the release of right end of left end
Mouth 203；The threeway 2 is fixed on by anchor ear 9 on threeway seat 3；The upper right side of the pedestal 1 is provided with electric machine support 4；It is described
The right end of electric machine support 4 is provided with stepper motor 5；The left end of the stepper motor 5 is connected with ball screw 6；The ball wire
Impeller-hub 7 is connected on bar 6；The left end of the impeller-hub 7 is provided with the piston 8 being connected to each other with liberation port 203；The piston 8
For truncated cone-shaped structure, and it is coaxial arrangement between liberation port 203.
Preferably, the impeller-hub 7 includes left axle section 701 and right axis section 702；The piston 8 is fixed on left axle section 701
Left end；The right end of the right axis section 702 is provided with circular hole 703；The ball screw 6 is arranged in circular hole 703.
Preferably, the piston 8 uses 35 degree of silica gel, it includes under frustum cone side 801, round platform upper bottom surface 802 and round platform
Bottom surface 803；Multiple air channels 804 being evenly arranged are provided on the frustum cone side 801；The notch of the air channel 804 is big
It is small gradually to be collapsed to a bit from round platform upper bottom surface 802 to the direction of round platform bottom surface 803.
Preferably, it is fixed with spring base 13 in the liberation port 203；The spring base 13 includes flange 1302 and is connected to
The cylinder 1301 of 1302 left end of flange；It is provided with compressed spring 12 between 2 inner wall of the pipe of outer wall and threeway of the cylinder 1301；
12 right end of the compressed spring is connected with sliding block 11；The sliding block 11 and the inner wall of the pipe of threeway 2 contact with each other；The sliding block 11
Right end be provided with rubber pad 10.
Preferably, the sliding block 11 includes becket 1101 and rubber ring 1102；The rubber ring 1102 is arranged in metal
The inside of ring 1101, and be in be wholely set with becket 1101；The medial surface setting of the rubber ring 1102 is tapered, and the cone
Degree is consistent with the taper of 8 frustum cone side of piston to be matched.
Preferably, the rubber pad 10 is ring body structurc, and the ring body structurc is by lateral surface 1001, interior right side 1002 and interior
Left side 1003 forms；The lateral surface 1001 is fixed on the inner wall of threeway 2, and right side and the end face of liberation port 203 are flat
Together；The interior right side 1002 is arranged tapered, and the taper is consistent with the taper of 8 frustum cone side of piston matches；The interior left side
Side 1003 and the angle of horizontal direction are 3~5 °.
Preferably, the threeway seat 3 is rectangular parallelepiped structure, and the upper end is provided with the threeway for positioning and locking for threeway 2
Fixing groove 301.
A kind of medical breathing machine, the medical breathing machine are connected with above-mentioned high-accuracy ventilation flow rate control system, this is medical to exhale
The gas vent of suction machine is connect with air inlet 201, and the breathing mask of the medical breathing machine is connect with pneumostome 202.
Preferably, it is provided with gas flow transducer in the pneumostome 202.
Preferably, the gas flow transducer in the pneumostome 202 is electrically connected with the control unit of the stepper motor 5.
A kind of operation principle when high-accuracy ventilation flow rate control system expiration, as shown in figs 1-9, liberation port gas pressure
And flow, in discharge, stepper motor rotates forward, and ball screw drives impeller-hub and piston to move right, and makes the frustum cone side of piston
It is detached from the end face that threeway is located at liberation port, sliding block under the action of compression spring elastic force, makes rubber while piston moves right
The rubber ring moment keeps the frustum cone side with piston to contact with each other and squeeze, and gas is released from the air channel of piston；Work as work
When plug continues to move right, sliding block moves right simultaneously, but the interior left side of sliding block and its right end rubber pad generates extruding, squeezes
The frictional force of generation hinders sliding block to move right so that the speed that sliding block moves right slows down, sliding block and piston while slowing down
Frustum cone side relative movement, gradually increase the area of release gas discharge, gas still discharges by air channel；When piston after
Continuous when moving right, the interior left side of sliding block and its right end rubber pad continues to squeeze, and the frictional force generated when squeezed is enough to hinder
When keeping off the elastic force of compressed spring, sliding block stops movement, and sliding block disconnects with piston, realizes the gas release of bigger；It can see above
Go out, liberation port gas emissions are gradually become larger by small, and pressure gradually reduces, and reach accurate control；The gas of liberation port simultaneously
In discharge, uniform diffusion is obtained by air channel, has reduced noise；A kind of high-accuracy ventilation flow rate control system air-breathing
When operation principle it is contrary to the above.
A kind of operation principle of medical breathing machine：Gas is provided by the wind turbine in medical breathing machine, enters height from air inlet
In accurate ventilation flow rate control system.
When pneumostome being needed to provide pressure of inspiration(Pi), stepper motor reversion, piston is moved to the left, when piston is moved to and threeway
When being fully sealed positioned at liberation port end face, maximum stream flow and pressure supply are realized；To the respirator system of closed-loop control, according to
The feedback signal of pneumostome interior air-flow sensor can control the forward and reverse for implementing stepper motor, be finally reached target
Pressure and flow.
When pneumostome being needed to provide breath pressure, stepper motor rotates forward, and piston moves right, when piston is moved to and threeway
Liberation port when completely disengaging, realize the release of maximum stream flow and pressure；Equally, to the respirator system of closed-loop control, according to
The feedback signal of pneumostome interior air-flow sensor can control the forward and reverse for implementing stepper motor, be finally reached target
Pressure and flow.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment including a series of elements includes not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.
Principle and implementation of the present invention are described for specific case used herein, the explanation of above example
It is merely used to help understand the method and its core concept of the present invention.The above is only a preferred embodiment of the present invention, it answers
When pointing out due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for the common skill of the art
For art personnel, without departing from the principle of the present invention, several improvement, retouching or variation can also be made, can also incited somebody to action
Above-mentioned technical characteristic is combined in the right way；These improve retouching, variation or combination, or the not improved structure by invention
Think and technical solution directly applies to other occasions, is regarded as protection scope of the present invention.
Claims (9)
1. a kind of high-accuracy ventilation flow rate control system, which is characterized in that it includes pedestal（1）, left upper end is provided with threeway
Seat（3）；The threeway seat（3）Upper end be provided with threeway（2）；The threeway（2）Air inlet including left end（201）, upper end
Pneumostome（202）With the liberation port of right end（203）；The threeway（2）Pass through anchor ear（9）It is fixed on threeway seat（3）On；It is described
Pedestal（1）Upper right side be provided with electric machine support（4）；The electric machine support（4）Right end be provided with stepper motor（5）；It is described
Stepper motor（5）Left end be connected with ball screw（6）；The ball screw（6）On be connected with impeller-hub（7）；The promotion
Axis（7）Left end be provided with and liberation port（203）The piston being connected to each other（8）；The piston（8）For truncated cone-shaped structure, and with release
Put mouth（203）Between for coaxial arrangement；The piston（8）Using 35 degree of silica gel, it includes frustum cone side（801）, bottom on round platform
Face（802）With round platform bottom surface（803）；The frustum cone side（801）On be provided with multiple air channels being evenly arranged（804）；
The air channel（804）Notch size from round platform upper bottom surface（802）To round platform bottom surface（803）Direction gradually collapse to one
Point.
2. a kind of high-accuracy ventilation flow rate control system according to claim 1, which is characterized in that the impeller-hub（7）
Including left axle section（701）And right axis section（702）；The piston（8）It is fixed on left axle section（701）Left end；The right axis section
（702）Right end be provided with circular hole（703）；The ball screw（6）It is arranged in circular hole（703）It is interior.
3. a kind of high-accuracy ventilation flow rate control system according to claim 1, which is characterized in that the liberation port
（203）Inside it is fixed with spring base（13）；The spring base（13）Including flange（1302）Be connected to flange（1302）Left end
Cylinder（1301）；The cylinder（1301）Outer wall and threeway（2）Compressed spring is provided between inner wall of the pipe（12）；The pressure
Contracting spring（12）Right end is connected with sliding block（11）；The sliding block（11）With threeway（2）Inner wall of the pipe contact with each other；The sliding block
（11）Right end be provided with rubber pad（10）.
4. a kind of high-accuracy ventilation flow rate control system according to claim 3, which is characterized in that the sliding block（11）Packet
Include becket（1101）And rubber ring（1102）；The rubber ring（1102）It is arranged in becket（1101）Inside, and with gold
Belong to ring（1101）In being wholely set；The rubber ring（1102）Medial surface setting it is tapered, and the taper and piston（8）Round platform
The taper of side unanimously matches.
5. a kind of high-accuracy ventilation flow rate control system according to claim 4, which is characterized in that the rubber pad（10）
For ring body structurc, the ring body structurc is by lateral surface（1001）, interior right side（1002）With interior left side（1003）Composition；It is described outer
Side（1001）It is fixed on threeway（2）Inner wall on, right side and liberation port（203）End face it is concordant；The interior right side
（1002）Tapered, and the taper and piston are set（8）The taper of frustum cone side unanimously matches；The interior left side（1003）With
The angle of horizontal direction is 3~5 °.
6. a kind of high-accuracy ventilation flow rate control system according to claim 1, which is characterized in that the threeway seat（3）
For rectangular parallelepiped structure, the upper end is provided with for threeway（2）The threeway fixing groove of positioning and locking（301）.
7. a kind of medical breathing machine, which is characterized in that the medical breathing machine is connected with described in any one of claim 1-6
High-accuracy ventilation flow rate control system, the gas vent and air inlet of the medical breathing machine（201）Connection, the medical breathing machine
Breathing mask and pneumostome（202）Connection.
8. a kind of medical breathing machine according to claim 7, which is characterized in that the pneumostome（202）Inside it is provided with gas
Flow sensor.
9. a kind of medical breathing machine according to claim 8, which is characterized in that the pneumostome（202）Interior air-flow passes
Sensor and the stepper motor（5）Control unit electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN104874084A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Exhalation valve and respirator provided with same |
| CN206424395U (en) * | 2016-10-24 | 2017-08-22 | 湖南万脉医疗科技有限公司 | A kind of high-accuracy ventilation flow rate control system and medical breathing machine |
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| US5072729A (en) * | 1986-11-04 | 1991-12-17 | Bird Products Corporation | Ventilator exhalation valve |
| CN101121054A (en) * | 2006-08-11 | 2008-02-13 | 深圳迈瑞生物医疗电子股份有限公司 | Expiratory valve |
| CN101468224A (en) * | 2007-12-29 | 2009-07-01 | 北京谊安医疗系统股份有限公司 | Flow regulating and controlling valve |
| CN101983738A (en) * | 2010-07-20 | 2011-03-09 | 浙江玉升医疗器械股份有限公司 | Pressure control valve for breathing machine |
| CN102500030A (en) * | 2011-10-13 | 2012-06-20 | 苏州凯迪泰医学科技有限公司 | Electromagnetically controlled tee-joint flow valve and medical breathing machine |
| CN103192412A (en) * | 2013-03-28 | 2013-07-10 | 浙江大学 | Bionic eye device with zooming characteristics |
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| CN206424395U (en) * | 2016-10-24 | 2017-08-22 | 湖南万脉医疗科技有限公司 | A kind of high-accuracy ventilation flow rate control system and medical breathing machine |
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| CN106267497A (en) | 2017-01-04 |
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Denomination of invention: A high-precision ventilation flow control system and medical ventilator Effective date of registration: 20220901 Granted publication date: 20181023 Pledgee: China Construction Bank Corporation Shaoyang Jianshe Road Sub-branch Pledgor: HUNAN VENT MEDICAL TECHNOLOGY Co.,Ltd. Registration number: Y2022980014316 |
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Date of cancellation: 20231205 Granted publication date: 20181023 Pledgee: China Construction Bank Corporation Shaoyang Jianshe Road Sub-branch Pledgor: HUNAN VENT MEDICAL TECHNOLOGY Co.,Ltd. Registration number: Y2022980014316 |