CN104645470B - Respiratory Medicine respirator - Google Patents
Respiratory Medicine respirator Download PDFInfo
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- CN104645470B CN104645470B CN201510083210.6A CN201510083210A CN104645470B CN 104645470 B CN104645470 B CN 104645470B CN 201510083210 A CN201510083210 A CN 201510083210A CN 104645470 B CN104645470 B CN 104645470B
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- humidifier
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Abstract
The present invention relates to a kind of Respiratory Medicine respirator, it belongs to technical field of medical instruments.The Respiratory Medicine respirator of the present invention, including main body, mask and humidifier, main body is provided with cabinet, it is provided with respiratory disorder alarm lamp on the upside of cabinet, the respiratory disorder alarm lamp left side is provided with oxygen excess alarm lamp, the oxygen excess alarm lamp left side is provided with carbon dioxide excess alarm lamp, and the carbon dioxide excess alarm lamp left side is provided with poisonous impurities load alarm lamp, and the poisonous impurities load alarm lamp left side is provided with humidifier fixed mount.The present invention is multiple functional, easy to use, and when carrying out patients in respiratory department first aid process, time saving and energy saving, science is convenient, safe and efficient, alleviates the work difficulty of medical worker.
Description
Technical field
The invention belongs to technical field of medical instruments is and in particular to a kind of Respiratory Medicine respirator.
Background technology
Patients in respiratory department often deposits dyspnea, the phenomenon that pulmonary supplies hypoxgia often, easily causes acute exhaling
Inhale exhaustion, hypopnea and abundant expectoration and thick, expectoration difficulties, obstructing airway, conventional respirator can not understand miscellaneous in gas
Matter and harmful substance, and mask long periods of wear causes face uncomfortable, if things go on like this, can cause life danger, considerably increase
The work difficulty of medical worker.
Content of the invention
It is an object of the invention to provide when one kind carries out Respiratory Medicine treatment, time saving and energy saving, science is convenient, safely and efficiently
Respiratory Medicine respirator.
The technical scheme is that：A kind of Respiratory Medicine respirator, including main body, mask and humidifier, in main body
It is provided with cabinet, on the upside of cabinet, is provided with respiratory disorder alarm lamp, the respiratory disorder alarm lamp left side is provided with oxygen excess report
Warning lamp, the oxygen excess alarm lamp left side is provided with carbon dioxide excess alarm lamp, and the carbon dioxide excess alarm lamp left side is provided with poisonous
Impurity load alarm lamp, the poisonous impurities load alarm lamp left side is provided with humidifier fixed mount；
It is provided with nebulizer adapter, the nebulizer adapter left side is provided with key station, on key station on the upside of cabinet
Side is provided with respirator patten transformation button, and the respirator patten transformation button left side is provided with ventilation setting button, and the key station left side is provided with auxiliary
Help platform, secondary station is provided with humidity display window, the humidity display window left side is provided with humidity set button, the humidity set button left side sets
There is temperature setting button, the temperature setting button left side is provided with temperature display device；
It is provided with wire on the left of humidifier, connecting wire intubation on the left of wire, it is provided with host switch, main frame on the downside of wire socket
It is provided with louvre on the downside of switch, on the downside of louvre, is provided with power line, on the right side of power line, be provided with plug；
It is provided with gas outlet on the right side of cabinet, be provided with air inlet pipe switch valve on the downside of gas outlet, set on the downside of air inlet pipe switch valve
There is breather clip, the breather clip other end connects mask breather, the mask ventilation pipe other end connects mask；
Be provided with air inlet pipe on the left of body interior, on the upside of air inlet pipe, be provided with air-filtering membrane, be provided with the upside of air-filtering membrane into
Trachea switch valve, the air inlet pipe other end connects microprocessor, and microprocessor is connected with conduit A, and the conduit A other end connects heating
Device, is provided with heating cushion on the downside of heater, be provided with thermal insulation board on the downside of heating cushion, and the heater other end connects depurator, under depurator
Side connects oxygen detector, is provided with pressure flow sensor on the right of oxygen detector, connects and give vent to anger on the right of pressure flow sensor
Pipe, connects harmful toxic matter receptacle on the upside of depurator, harmful toxic matter receptacle lower right side is provided with unidirectional inflow piece, and pressure flow passes
Connect carbon dioxide indicator on the upside of sensor, on the right side of carbon dioxide indicator, connect escape pipe, be provided with title load-bearing on the downside of main body and prop up
Frame, is provided with slipmat on the downside of support bracket；It is provided with humidifier connecting tube on the upside of main body, be provided with motor in main body, set on the downside of motor
There is damping noise abatement pad；
Mask is provided with plastic casing, is provided with dressing fixing groove, is placed with dressing, dressing in dressing fixing groove inside plastic casing
It is provided with breather, plastic casing is provided with headband, headband is provided with headband fixing card inside fixing groove；
Humidifier is provided with metal shell, is provided with humidifier access hole, sets on the right side of humidifier access hole on the upside of metal shell
There are access hole push-and-pull handss, on the right side of access hole push-and-pull handss, be provided with key mouth；
Humidifier inside left is provided with liquid container, is provided with water inlet pipe on the left of liquid container, and water inlet pipe is provided with to be opened into water
Close valve, be provided with water amount alarm device on the upside of water inlet pipe, be provided with liquid measure table on the downside of water inlet pipe, on the downside of liquid measure table, be provided with water outlet
Pipe, outlet pipe is provided with effluent switch valve, is provided with pressure alarm on the downside of outlet pipe, is provided with liquid impurity mistake on the downside of liquid container
Filter screen, is provided with metal gas tank on the right side of liquid impurity drainage screen, be provided with heat-transfer metal plate, heat-transfer metal plate on the downside of metal gas tank
Downside is provided with the downside of heating resistor heating resistor and is provided with thermal insulation board, connecting conduit B on the right side of metal gas tank, and the conduit B other end is even
Connect dampness tank, on the upside of dampness tank, connect air inlet pipe, air inlet pipe is provided with air inlet switch valve, and air inlet pipe is provided with protection gauze, enters
It is provided with humidifier switch on the downside of trachea, be provided with connection display lamp on the left of humidifier switch, on the downside of dampness tank, be provided with conduit C, conduit C
It is provided with clip.
It is provided with impurity filtering net on the right side of described heater.
It is provided with one-way air inlet film on the left of described pressure flow sensor.
Described air inlet pipe is provided with impurity filtering net.
It is provided with sensing nose support inside described mask.
It is provided with lower jaw memory pad inside described mask.
Described mask ventilation pipe is provided with harmful toxic matter drainage screen.
Described dampness tank is provided with wet gas purification piece below.
The invention has the beneficial effects as follows：Multiple functional, easy to use, when carrying out patients in respiratory department first aid process, save time
Laborsaving, science is convenient, safe and efficient, alleviates the work difficulty of medical worker.
Brief description
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 is body interior structural representation of the present invention.
Fig. 3 is face masks structural representation of the present invention.
Fig. 4 is humidifier internal structure schematic diagram of the present invention.
In figure：
1st, main body, 2, mask 3, humidifier, 4, cabinet, 5, respiratory disorder alarm lamp, 6, oxygen excess alarm lamp, 7,
Carbon dioxide excess alarm lamp, 8, poisonous impurities load alarm lamp, 9, humidifier fixed mount, 10, nebulizer adapter, 11,
Key station, 12, respirator patten transformation button, 13, ventilation setting button, 14, secondary station, 15, humidity display window, 16, humidity sets
Determine button, 17, temperature setting button, 18, temperature display device, 19, wire, 20, wire intubation, 21, host switch, 22, radiating
Hole, 23, power line, 24, plug, 25, gas outlet, 26, air inlet pipe switch valve, 27, breather clip, 28, mask ventilation pipe,
29th, air inlet pipe, 30, air-filtering membrane, 31, air inlet pipe switch valve, 32, microprocessor, 33, conduit, 34, heater, 35, heating
Pad, 36, thermal insulation board, 37, depurator, 38, oxygen detector, 39, pressure flow sensor, 340, escape pipe, 41, harmful toxic matter
Receptacle, 42, unidirectional inflow piece, 43, carbon dioxide indicator, 44, escape pipe, 45, support bracket, 46, slipmat, 47, plus
Wet device connecting tube, 48, motor, 49, damping noise abatement pad, 50, plastic casing, 51, dressing fixing groove, 52, dressing, 53, breather,
54th, headband, 55, headband fixing card, 56, metal shell, 57, humidifier access hole, 58, access hole push-and-pull handss, 59, key pipe,
60th, liquid container, 61, water inlet pipe, 62, water inlet switch valve, 63, water amount alarm device, 64, liquid measure table, 65, outlet pipe, 66,
Effluent switch valve, 67, pressure alarm, 68, liquid impurity drainage screen, 69, metal gas tank, 70, heat-transfer metal plate, 71, send out
Thermal resistance, 72, thermal insulation board, 73, conduit, 74, dampness tank, 75, air inlet pipe, 76, air inlet switch valve, 77, protection gauze, 78, plus
Wet device switch, 79, connect display lamp, 80, main body connecting conduit, 81, clip, 82, impurity filtering net, 83, one-way air inlet film,
84th, impurity filtering net, 85, sensing nose support, 86, lower jaw memory pad, 87, harmful toxic matter drainage screen, 88, wet gas purification piece.
Specific embodiment
Downside referring to the drawings, is described in detail to the Respiratory Medicine respirator of the present invention.
As shown in figure 1, Respiratory Medicine respirator of the present invention, including main body 1, mask 2 and humidifier 3, main body 1 is provided with
Cabinet 4, is provided with respiratory disorder alarm lamp 5 on the upside of cabinet 4, respiratory disorder alarm lamp 5 left side is provided with oxygen excess report
Warning lamp 6, oxygen excess alarm lamp 6 left side is provided with carbon dioxide excess alarm lamp 7, and carbon dioxide excess alarm lamp 7 left side is provided with
Poisonous impurities load alarm lamp 8, poisonous impurities load alarm lamp 8 left side is provided with humidifier fixed mount 9；
As shown in figure 1, being provided with nebulizer adapter 10 on the upside of cabinet 4, nebulizer adapter 10 left side is provided with
Key station 11, is provided with respirator patten transformation button 12 on the upside of key station 11, respirator patten transformation button 12 left side is provided with ventilation
Setting button 13, key station 11 left side is provided with secondary station 14, and secondary station 14 is provided with humidity display window 15, humidity display window 15 left side
It is provided with humidity set button 16, humidity set button 16 left side is provided with temperature setting button 17, temperature setting button 17 left side sets
There is temperature display device 18；
As shown in figure 1, being provided with wire 19 on the left of humidifier 3, wire 19 left side connecting wire socket 20, under wire socket 20
Side is provided with host switch 21, is provided with louvre 22 on the downside of host switch 21, is provided with power line 23, power line 23 on the downside of louvre 22
Right side is provided with plug 24；
As shown in figure 1, being provided with gas outlet 25 on the right side of cabinet 4, being provided with air inlet pipe switch valve 26 on the downside of gas outlet 25, entering
It is provided with breather clip 27, breather clip 27 other end connects mask breather 28, mask on the downside of trachea switch valve 26
Breather 28 other end connects mask 2；
Main body 1 inside left is provided with air inlet pipe 29, and air inlet pipe 29 is provided with air-filtering membrane 30, on the upside of air-filtering membrane 30
It is provided with air inlet pipe switch valve 31, air inlet pipe 29 other end connects microprocessor 32, microprocessor 32 is connected with conduit A33, conduit
The A33 other end connects heater 34, is provided with heating cushion 35, is provided with thermal insulation board 36 on the downside of heating cushion 35 on the downside of heater 34, heating
Device 34 other end connects depurator 37, and depurator 37 connects oxygen detector 38 below, is provided with pressure on the right of oxygen detector 38
Flow transducer 39, pressure flow sensor 39 the right connects escape pipe 40, and depurator 37 upside connects harmful toxic matter receptacle
41, harmful toxic matter receptacle 41 lower right side is provided with unidirectional inflow piece 42, and pressure flow sensor 39 upside connects carbon dioxide inspection
Survey device 43, carbon dioxide indicator 43 right side connects escape pipe 44, is provided with title support bracket 45, support bracket 45 on the downside of main body 1
Downside is provided with slipmat 46；It is provided with humidifier connecting tube 47 on the upside of main body 1, be provided with motor 48 in main body 1, be provided with the downside of motor 48
Damping noise abatement pad 49；
Mask 2 is provided with plastic casing 50, is provided with dressing fixing groove 51, is placed with dressing fixing groove 51 inside plastic casing 50
Dressing 52, is provided with breather 53 inside dressing fixing groove 51, plastic casing 50 is provided with headband 54, and headband 54 is provided with headband and fixes
Card 55；
Humidifier 3 is provided with metal shell 56, is provided with humidifier access hole 57, humidifier access hole on the upside of metal shell 56
It is provided with access hole push-and-pull handss 58 on the right side of in the of 57, on the right side of access hole push-and-pull handss 58, be provided with key mouth 59；
Humidifier 3 inside left is provided with liquid container 60, is provided with water inlet pipe 61, water inlet pipe 61 sets on the left of liquid container 60
There is water inlet switch valve 62, be provided with water amount alarm device 63 on the upside of water inlet pipe 61, on the downside of water inlet pipe 61, be provided with liquid measure table 64, liquid
It is provided with outlet pipe 65, outlet pipe 65 is provided with effluent switch valve 66, is provided with pressure alarm on the downside of outlet pipe 65 on the downside of measurement table 64
Device 67, is provided with liquid impurity drainage screen 68, is provided with metal gas tank 69 on the right side of liquid impurity drainage screen 68 on the downside of liquid container 60,
It is provided with heat-transfer metal plate 70 on the downside of metal gas tank 69, be provided with heating resistor 71 on the downside of heat-transfer metal plate 70, under heating resistor 71
Side is provided with thermal insulation board 72, metal gas tank 69 right side connecting conduit B73, connects dampness tank 74, on dampness tank 74 on the right side of conduit B73
Side connects air inlet pipe 75, and air inlet pipe 75 is provided with air inlet switch valve 76, and air inlet pipe 75 is provided with protection gauze 77, under air inlet pipe 75
Side is provided with humidifier switch 78, is provided with connection display lamp 79, is provided with conduit C80 on the downside of dampness tank 74 on the left of humidifier switch 78,
Conduit C80 is provided with clip 81.When patient is treated using respirator, plug 24 is inserted power supply, open main frame and open
Close 21, open humidifier switch 78, connect display lamp 79 and light, then adjust respirator patten transformation button 12 successively, adjust logical
Tolerance arranges button 13, humidity set button 16, temperature setting button 17, then wears mask 2 to patient, is treated.
It is provided with impurity filtering net 82 on the right side of described heater 34.So setting can clear up the miscellaneous of the humidity of humidifier manufacture
Matter is it is ensured that the quality of humidity.
It is provided with one-way air inlet film 83 on the left of described pressure flow sensor 39.So arrange, it is to avoid gas backstreaming is it is ensured that gas
Body quality.
Described air inlet pipe 44 is provided with impurity filtering net 84.So arrange, remove the gaseous impurity entering humidifier, protect
The normal operation of card humidifier.
In described mask, 2 sides are provided with sensing nose support 85.So arrange, it is to avoid mask extrudes nasal cavity for a long time, it is to avoid breathing is not
Freely.
It is provided with lower jaw memory pad 86 inside described mask 2.So arrange, increase mask comfort level, reduce patient because
The sense of discomfort that long periods of wear is brought.
Described mask ventilation pipe 28 is provided with harmful toxic matter drainage screen 87.So arrange, suction gas can be purified again,
Filtering exhalation is it is ensured that the quality of gas.
Described dampness tank 74 is provided with wet gas purification piece 88 below.So arrange, purify harmful substance in dampness it is ensured that wet
The quality of gas.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
For member, on the premise of without departing from the technology of the present invention principle, some improvement can also be made and replace, these improve and replace
Also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of Respiratory Medicine respirator, including main body (1), mask (2) and humidifier (3) it is characterised in that：
Main body (1) is provided with cabinet (4), is provided with respiratory disorder alarm lamp (5), respiratory disorder report on the upside of cabinet (4)
Warning lamp (5) left side is provided with oxygen excess alarm lamp (6), and oxygen excess alarm lamp (6) left side is provided with carbon dioxide excess alarm lamp
(7), carbon dioxide excess alarm lamp (7) left side is provided with poisonous impurities load alarm lamp (8), poisonous impurities load alarm lamp (8)
The left side is provided with humidifier fixed mount (9)：
It is provided with nebulizer adapter (10), nebulizer adapter (10) left side is provided with key station on the upside of cabinet (4)
(11), it is provided with respirator patten transformation button (12) on the upside of key station (11), respirator patten transformation button (12) left side is provided with ventilation
Amount setting button (13), key station (11) left side is provided with secondary station (14), and secondary station (14) is provided with humidity display window (15), humidity
Display window (15) left side is provided with humidity set button (16), and humidity set button (16) left side is provided with temperature setting button (17),
Temperature setting button (17) left side is provided with temperature display device (18)；
It is provided with wire (19) on the left of humidifier (3), connecting wire socket (20) on the left of wire (19), wire socket sets on the downside of (20)
There is host switch (21), on the downside of host switch (21), be provided with louvre (22), on the downside of louvre (22), be provided with power line (23), electricity
It is provided with plug (24) on the right side of source line (23)；
It is provided with gas outlet (25) on the right side of cabinet (4), be provided with air inlet pipe switch valve (26) on the downside of gas outlet (25), air inlet pipe is opened
Close and on the downside of valve (26), be provided with breather clip (27), breather clip (27) other end connects mask breather (28), face
Cover breather (28) other end connects mask (2)；
Main body (1) inside left is provided with air inlet pipe (29), and air inlet pipe (29) is provided with air-filtering membrane (30), air-filtering membrane
(30) be provided with air inlet pipe switch valve (31) on the upside of, air inlet pipe (29) other end connects microprocessor (32), microprocessor (32) with
Conduit A (33) connects, and conduit A (33) other end connects heater (34), is provided with heating cushion (35) on the downside of heater (34), heating
It is provided with thermal insulation board (36), heater (34) other end connects depurator (37), depurator (37) connects oxygen below on the downside of pad (35)
Gas detector (38), is provided with pressure flow sensor (39), on the right of pressure flow sensor (39) on the right of oxygen detector (38)
Connect escape pipe (40), on the upside of depurator (37), connect harmful toxic matter receptacle (41), harmful toxic matter receptacle (41) lower right side
It is provided with unidirectional inflow piece (42), on the upside of pressure flow sensor (39), connects carbon dioxide indicator (43), carbon dioxide detects
Connect escape pipe (44) on the right side of device (43), be provided with title support bracket (45) on the downside of main body (1), be provided with anti-on the downside of support bracket (45)
Skidding (46)；It is provided with humidifier connecting tube (47) on the upside of main body (1), in main body (1), is provided with motor (48), motor sets on the downside of (48)
There is damping noise abatement pad (49)；
Mask (2) is provided with plastic casing (50), is provided with dressing fixing groove (51) inside plastic casing (50), in dressing fixing groove (51)
It is placed with dressing (52), inside dressing fixing groove (51), is provided with breather (53), plastic casing (50) is provided with headband (54), headband
(54) it is provided with headband fixing card (55)；
Humidifier (3) is provided with metal shell (56), is provided with humidifier access hole (57) on the upside of metal shell (56), and humidifier is examined
Repair and on the right side of mouth (57), be provided with access hole push-and-pull handss (58), on the right side of access hole push-and-pull handss (58), be provided with key mouth (59)；
Humidifier (3) inside left is provided with liquid container (60), is provided with water inlet pipe (61), water inlet pipe on the left of liquid container (60)
(61) it is provided with water inlet switch valve (62), on the upside of water inlet pipe (61), is provided with water amount alarm device (63), water inlet pipe is provided with the downside of (61)
Liquid measure table (64), is provided with outlet pipe (65) on the downside of liquid measure table (64), outlet pipe (65) is provided with effluent switch valve
(66), it is provided with pressure alarm (67) on the downside of outlet pipe (65), on the downside of liquid container (60), be provided with liquid impurity drainage screen (68),
It is provided with metal gas tank (69), metal gas tank is provided with heat-transfer metal plate on the downside of (69) on the right side of liquid impurity drainage screen (68)
(70), it is provided with heating resistor (71) on the downside of heat-transfer metal plate (70), on the downside of heating resistor (71), be provided with thermal insulation board (72), metal system
Connecting conduit B (73) on the right side of gas tank (69), connects dampness tank (74) on the right side of conduit B (73), connects air inlet on the upside of dampness tank (74)
Pipe (75), air inlet pipe (75) is provided with air inlet switch valve (76), and air inlet pipe (75) is provided with protection gauze (77), air inlet pipe (75)
Downside is provided with humidifier switch (78), is provided with connection display lamp (79) on the left of humidifier switch (78), and dampness tank sets on the downside of (74)
Conduit C (80), conduit C (80) is had to be provided with clip (81).
2. Respiratory Medicine respirator according to claim 1 it is characterised in that：It is provided with miscellaneous on the right side of described heater (34)
Matter drainage screen (82).
3. Respiratory Medicine respirator according to claim 1 it is characterised in that：Described pressure flow sensor (39) is left
Side is provided with one-way air inlet film (83).
4. Respiratory Medicine respirator according to claim 1 it is characterised in that：Described air inlet pipe (44) is provided with impurity
Drainage screen (84).
5. Respiratory Medicine respirator according to claim 1 it is characterised in that：It is provided with sensing inside described mask (2)
Nose support (85).
6. Respiratory Medicine respirator according to claim 1 it is characterised in that：It is provided with lower jaw inside described mask (2)
Memory pad (86).
7. Respiratory Medicine respirator according to claim 1 it is characterised in that：Set on described mask ventilation pipe (28)
Poisonous and harmful substances drainage screen (87).
8. Respiratory Medicine respirator according to claim 1 it is characterised in that：Described dampness tank (74) is provided with wet below
Gas purifying tablets (88).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510083210.6A CN104645470B (en) | 2015-02-11 | 2015-02-11 | Respiratory Medicine respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510083210.6A CN104645470B (en) | 2015-02-11 | 2015-02-11 | Respiratory Medicine respirator |
Publications (2)
| Publication Number | Publication Date |
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| CN104645470A CN104645470A (en) | 2015-05-27 |
| CN104645470B true CN104645470B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510083210.6A Active CN104645470B (en) | 2015-02-11 | 2015-02-11 | Respiratory Medicine respirator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273172B (en) * | 2018-03-23 | 2020-12-08 | 刘加福 | A breathing machine for treating breathe internal medicine disease |
| CN108853664A (en) * | 2018-05-10 | 2018-11-23 | 公维亮 | A kind of pulmonary drug fusion respiratory therapy machine |
| CN110604858A (en) * | 2019-08-28 | 2019-12-24 | 重庆医科大学附属第一医院 | Humidifier of breathing machine and control method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002371827A (en) * | 2001-06-18 | 2002-12-26 | Denso Corp | Exhaust emission control device for engine |
| CN2638755Y (en) * | 2003-05-16 | 2004-09-08 | 天津大学 | Respirator with collecting sterilizing purifying treatment apparatus for exhalation |
| CN202961422U (en) * | 2012-12-17 | 2013-06-05 | 王德泉 | Respirator for cardiology department |
| CN203971102U (en) * | 2014-06-28 | 2014-12-03 | 田飞飞 | Simply respirator |
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Inventor after: Dai Lihua Inventor before: Gu Lili |
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Effective date of registration: 20170110 Address after: 264000 Yantai infectious disease hospital, Yantai Road, Zhifu District, Shandong, eight, China Applicant after: Dai Lihua Address before: 272000 Yanzhou people s Hospital of Shandong Applicant before: Gu Lili |
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Effective date of registration: 20191014 Address after: 226100 Fuxing Road, Yuet Lai Town, Haimen, Nantong, Jiangsu, 18 Patentee after: Haimen Zhi Zhou Industrial Design Co., Ltd. Address before: 264000 Yantai infectious disease hospital, Yantai Road, Zhifu District, Shandong, eight, China Patentee before: Dai Lihua |