CN208756733U - A kind of anti-infection mask of breathing endoscope diagnosis and treatment - Google Patents
A kind of anti-infection mask of breathing endoscope diagnosis and treatment Download PDFInfo
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- CN208756733U CN208756733U CN201820113704.3U CN201820113704U CN208756733U CN 208756733 U CN208756733 U CN 208756733U CN 201820113704 U CN201820113704 U CN 201820113704U CN 208756733 U CN208756733 U CN 208756733U
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- mounting base
- mask
- shell
- sputum aspirator
- operating space
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Abstract
The utility model discloses a kind of anti-infection masks of breathing endoscope diagnosis and treatment, including mask body, air inlet in mask body is connected with oxygen cylinder, gas outlet is connected with receiving flask, the receiving flask is provided with filter layer and negative pressure device, collect the gas of patient's exhalation, filter device is filtered collection processing to the gas of exhalation, mask body includes operating space, operating space is provided with the extraneous sealing shroud of isolation, the sealing shroud is in can deformation, its operating space is by being arranged the first mounting base protruded into for scope, second mounting base of spatula and the third mounting base of installation sputum aspirator are installed, it enables the surgeon to opposite mask isolation and does endoscopy, doctor or auxiliary nurse can be directly outside masks to spatula in operation, scope and sputum aspirator are operated, to solve to need to take down mask in endoscopic technic in the past, it keeps away Exempt to be polluted in scope operating process by the droplet that patient's cough generates.
Description
Technical field
The utility model relates to area of medical devices, the anti-infection faces of more particularly to a kind of breathing endoscope diagnosis and treatment
Cover.
Background technique
A basic diagnosis and treatment method of the Bronchofiberscope as respiratory disease, at present clinical using more and more extensive.
With the development of operation horizontal raising and medical instrument, some patients for needing surgical operation therapy of script, in Bronchofiberscope mirror
Under can be completed treatment, and damage small, patient restores fast, but when row branchofiberoscope diagnosis and treatment, airway wall intranasal or mouth
Chamber enters air flue, and due to the stimulation to tunica mucosa tracheae, patient has violent, expectoration, and pathogenic microorganisms easily pollutes consulting room, hands over
Fork infection medical worker and other patients, especially passes through respiratory infectious disease patient, and when cough generates a large amount of droplets, this
A little droplets carry a large amount of highly pathogenic microorganisms, such as bacterium, virus, mycoplasma, in the prior art when doing breathing scope,
Patient carries out often through common medical mask is worn, and still has part droplet in its cough and runs out of.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of anti-senses of breathing endoscope diagnosis and treatment
Mask is contaminated, communicable disease when preventing sufferer from coughing keeps consulting room air cleaning.
To achieve the above object, the utility model provides following technical solution: a kind of anti-infection of breathing endoscope diagnosis and treatment
Mask, including mask body are provided with air inlet and air outlet in mask body, and air inlet is connected with oxygen cylinder, and gas outlet connects
It connects and is provided with receiving flask, which is provided with filter layer, and receiving flask is provided with negative pressure device behind filter layer outgassing direction,
Air inlet is provided with breather cheek valve, and gas outlet is provided with expiratory one-way valve, and mask body includes operating space, operating space setting
There is opening, which is provided with the isolation external world and deformable sealing shroud, is provided with first protruded into for scope on the sealing shroud
Mounting base is provided with annular groove on the inner wall of the first mounting base, is provided in the annular groove for close with scope sealing cooperation
Seal is provided with the second mounting base on sealing shroud, which is provided with the spatula that oral cavity is protruded into for endoscope
Component is provided with the third mounting base for installing sputum aspirator on sealing shroud.
Third mounting base and sputum aspirator dismantling connection, the third mounting base are as a further improvement of the utility model,
Adjustable valve body, third mounting base include shell, spool, mounting plate, the first spring part, and casing center is provided with " convex " font
Through-hole, which reduces towards mask body lateral surface direction aperture, which is provided with first at the diminution of aperture
Boss, spool are mutually contradicted with first boss, spool be in through-hole coincide " convex " type, first spring part one end connection plate,
The first spring part other end connects spool, and the first spring part keeps spool and first boss to contradict, and mounting plate includes mounting ring
And sliding block, sliding slot is provided on shell, and sliding block is slidably connected with sliding slot, and sliding block passes through sliding slot and stretches out housing exterior walls, housing exterior walls
It is provided with second boss, is contradicted between the sliding block and second boss and is connected with second spring part, housing exterior walls are provided with receiving envelope
The rubber sleeve of second spring part and sliding block is closed, sputum aspirator is provided with for being mounted on the fixation being fixedly mounted in third mounting base
Part.
Be inlaid on spool and the contact surface of inner walls as a further improvement of the utility model, for in shell
First O-ring of wall contact.
As a further improvement of the utility model, the outer wall of shell towards mask body lateral surface be provided with for suction
Second O-ring of phlegm device interference fit.
Spatula component includes spatula and operating stick as a further improvement of the utility model, which fixes
The second mounting base is mounted on towards mask body medial surface side, the second mounting base is provided with towards mask body lateral surface side
Blind hole, operating stick and blind hole grafting.
Operating space includes endoscopic technic area, spatula operating space and sputum aspirator as a further improvement of the utility model,
Sealing shroud is respectively set in operating space, endoscopic technic area, spatula operating space and sputum aspirator operating space, and sealing shroud is provided with scalable
Bellows, the bellows and opening be tightly connected, and the material of bellows is rubber.
The lower end of mask body is arranged in gas outlet as a further improvement of the utility model, and receiving flask includes upper layer
And lower layer, receiving flask upper layer offer the air inlet of connection gas outlet and the venthole of connection negative pressure device, filter layer setting exists
Receiving flask lower layer, filter layer include the active carbon filtration layer set gradually and the filter cotton layer for being adsorbed with thimerosal, receiving flask
Air inlet is provided with the tracheae for protruding into filter cotton layer.
The utility model has the following beneficial effects: by by mask designs at when being worn to patient facial region, forming an envelope
The space closed and the snout that patient is isolated, mask is connected with the receiving flask of negative pressure device when in use, collects patient and exhales
Gas out, filter device are filtered collection processing to the gas of exhalation, and connect oxygen cylinder on mask and supply oxygen for patient,
By being arranged operating space on mask, operating space is by being arranged the of the first mounting base protruded into for scope, installation spatula
The third mounting base of two mounting bases and installation sputum aspirator enables the surgeon to opposite mask isolation and does endoscopy, in operation
Doctor or auxiliary nurse can operate spatula, scope and sputum aspirator directly outside mask, to solve to exist in the past
It needs to take down mask when endoscopic technic, avoids the droplet coughed and generated by patient in scope operating process and pollute.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model the first mounting base and scope；
Fig. 3 is the structural schematic diagram of the utility model third mounting base and sputum aspirator；
Fig. 4 is the structural schematic diagram of the utility model the second mounting base and spatula component；
Fig. 5 is the structural schematic diagram of third mounting base use state once；
Fig. 6 is the structural schematic diagram under third mounting base use state two.
1, mask body；2, air inlet；3, gas outlet；4, oxygen cylinder；5, receiving flask；6, filter layer；7, negative pressure device；8,
Breather cheek valve；9, expiratory one-way valve；10, it is open；11, sealing shroud；12, the first mounting base；13, annular groove；14, sealing ring；
15, the second mounting base；16, spatula component；17, third mounting base；18, sputum aspirator；19, shell；20, spool；21, it installs
Plate；22, the first spring part；23, through-hole；24, first boss；25, mounting ring；26, sliding block；27, sliding slot；28, second boss；
29, second spring part；30, rubber sleeve；31, fixing piece；32, the first O-ring；33, the second O-ring；34, spatula；35, it operates
Bar；36, blind hole；37, endoscopic technic area；38, spatula operating space；39, sputum aspirator operating space；40, bellows；41, air inlet；
42, venthole；43, active carbon filtration layer；44, filter cotton layer；45, tracheae.
Specific embodiment
The utility model is described in further detail below in conjunction with embodiment given by attached drawing.
Referring to Fig.1 shown in -6, a kind of breathing endoscope diagnosis and treatment anti-infection mask, including mask body disclosed in the present embodiment
1, air inlet 2 and gas outlet 3 are provided in mask body 1, and air inlet 2 is connected with oxygen cylinder 4, and gas outlet 3 is connected with receipts
Collect bottle 5, which is provided with filter layer 6, and receiving flask 5 is provided with negative pressure device 7, air inlet behind 6 outgassing direction of filter layer
Mouth 2 is provided with breather cheek valve 8, and breather cheek valve 8 prevents the gas breathed out on the inside of mask from by air inlet 2, gas outlet 3
It is provided with expiratory one-way valve 9, expiratory one-way valve 9 prevents the gas in receiving flask 5 from entering on the inside of mask, and mask body 1 is wrapped
Operating space is included, operating space is provided with opening 10, which is provided with the isolation external world and deformable sealing shroud 11, sealing shroud
11 material can choose as transparent plastic film, when so as to doctor operating observation panel good for preferred material with light transmission
Chamber inner case is provided with the first mounting base 12 protruded into for scope on the sealing shroud 11, sets on the inner wall of the first mounting base 12
It is equipped with annular groove 13, the sealing ring 14 for cooperating with scope sealing is provided in the annular groove 13, is provided on sealing shroud 11
Second mounting base 15, second mounting base 15 are provided with the spatula component 16 that oral cavity is protruded into for endoscope, sealing shroud 11
On be provided with third mounting base 17 for installing sputum aspirator 18, when in use doctor push scope by the first mounting base 12 into
Enter nasal cavity or oral cavity, when by oral cavity, when needing spatula component 16, control spatula component 16 suppresses the root of the tongue, in addition
Since spatula 34 and scope can generate sputum to the stimulation of mucous membrane of mouth, throat and tracheae 45 during endoscopic views, lead to
It crosses sputum aspirator 18 and export is attracted to intraoral sputum, increase the comfort of patient.
Pass through the mouth and nose for mask designs at when being worn to patient facial region, being formed into a closed space with patient being isolated
Portion, mask is connected with the receiving flask 5 of negative pressure device 7 when in use, collects the gas of patient's exhalation, filter device is to exhalation
Gas be filtered collection processing, and on mask connect oxygen cylinder 4 be patient supply oxygen, pass through on mask setting operation
Area, operating space is by being arranged the first mounting base 12, the second mounting base 15 and installation of installation spatula 34 that protrude into for scope
The third mounting base 17 of sputum aspirator 18 enables the surgeon to opposite mask isolation and does endoscopy, in operation doctor or auxiliary
Help nurse that can operate directly outside mask to spatula 34, scope and sputum aspirator 18, to solve to grasp in scope in the past
As when need to take down mask, avoid in scope operating process by patient cough generate droplet pollute.
As a kind of improved specific embodiment, third mounting base 17 and 18 dismantling connection of sputum aspirator, third installation
Seat 17 is adjustable valve body, and third mounting base 17 includes shell 19, spool 20, mounting plate 21, the first spring part 22, shell 19
It is provided centrally with the through-hole 23 of " convex " font, which reduces towards 1 lateral surface direction aperture of mask body, in the shell 19
Portion is provided with first boss 24 at the diminution of aperture, and spool 20 and first boss 24 mutually contradict, and spool 20 is in kiss with through-hole 23
" convex " type of conjunction, 22 one end connection plate 21 of the first spring part, 22 other end of the first spring part connect spool 20, the first spring
Part 22 keeps spool 20 and first boss 24 to contradict, and mounting plate 21 includes mounting ring 25 and sliding block 26, is provided with cunning on shell 19
Slot 27, sliding block 26 are slidably connected with sliding slot 27, and sliding block 26 stretches out 19 outer wall of shell by sliding slot 27, and 19 outer wall of shell is provided with the
Two boss 28 contradict between the sliding block 26 and second boss 28 and are connected with second spring part 29, and 19 outer wall of shell is provided with receiving
The rubber sleeve 30 of second spring part 29 and sliding block 26 is closed, which is adhered with the sealing of shell 19, and sputum aspirator 18 is provided with
For being mounted on the fixing piece 31 being fixedly mounted in third mounting base 17.
By setting detachable structure for sputum aspirator 18, since the whole apparatus volume of sputum aspirator 18 is larger, do not needing
When can dismantle, facilitate endoscopic technic, at the same avoid no doctor help under since its preponderance draws downwards mask,
By being provided with adjustable spool 20 in third mounting base 17, spool 20 is replied in second spring part 29 and the first spring part 22
It keeps mutually contradicting with first boss 24 under power, prevents the air on the inside of mask from flowing out by third mounting base 17, when in use,
The tube wall of sputum aspirator 18, which is installed in third mounting base 17, pushes sliding block 26 to move far from 24 side of first boss, while driving valve
Gap is formed between core 20 and first boss 24, sputum can pass through the through-hole of shell 19 in 18 negative pressure leaching of sputum aspirator
23 are attracted out, and fixed by fixing piece 31 when sputum aspirator 18 is mounted on third 17 outer wall of mounting base, fixing piece 31 can
Think dead ring, outer spiral shell can also be set in 17 outer wall of third mounting base by the way that internal screw thread is arranged on the inside of 18 tube wall of sputum aspirator
Line, sputum aspirator 18 and third mounting base 17 are threadedly coupled, and detachable structure disclosed above makes sputum aspirator 18 be installed to the
When in three mounting bases 17, the through-hole 23 of third mounting base 17 is kept unimpeded, when sputum aspirator 18 and third mounting base 17 are dismantled, the
The through-hole 23 of three mounting bases 17, which seals, closes.
As a kind of improved specific embodiment, it is inlaid with and is used for and shell on the contact surface of spool 20 and 19 inner wall of shell
First O-ring 32 of 19 inner wall of body contact, spool 20 and 19 inner wall of shell are close in contact by the first O-ring 32, so that logical
Hole 23 keeps closed.
As a kind of improved specific embodiment, the outer wall of shell 19 towards 1 lateral surface of mask body, which is provided with, to be used for
The second O-ring 33 being interference fitted with sputum aspirator 18 plays sealing function when sputum aspirator 18 and the installation of shell 19 connect, keeps
Third mounting base 17 is in negative pressure state when sputum aspirator 18 works.
As a kind of improved specific embodiment, spatula component 16 includes spatula 34 and operating stick 35, the pressure tongue
Plate 34 is fixedly mounted on the second mounting base 15 towards 1 medial surface side of mask body, and the second mounting base 15 is towards outside mask body 1
Side side is provided with blind hole 36, operating stick 35 and 36 grafting of blind hole.
Separate structure is set by spatula component 16, when in use, operating stick 35 will be held and control the second mounting base 15
Direction so that control spatula 34, keep its structure simple, while disinfection easy to disassemble.
As a kind of improved specific embodiment, operating space includes endoscopic technic area 37, spatula operating space 38 and inhales
Sealing shroud 11 is respectively set in phlegm device operating space 39, endoscopic technic area 37, spatula operating space 38 and sputum aspirator operating space 39, sealing
Set 11 is provided with telescopic bellows 40, and the bellows 40 and opening 10 are tightly connected, and the material of bellows 40 is rubber.
By the way that operating space subregion is arranged, so that will not influence each other when controlling scope, spatula 34 and sputum aspirator 18,
Its sealing shroud 11 is relatively independent, so that when controlling the direction of the first mounting base 12, the second mounting base 15 and third mounting base 17
It is more flexible, additionally by telescopic bellows 40 is arranged, so that sealing shroud 11 has certain stretching, extension empty in all directions
Between, it can store when not in use, keep its overall volume smaller, enable mask more comfortable when wearing.
As a kind of improved specific embodiment, the lower end of mask body 1 is arranged in gas outlet 3, and receiving flask 5 includes upper
Layer and lower layer, 5 upper layer of receiving flask offer the air inlet 41 of connection gas outlet 3 and the venthole 42 of connection negative pressure device 7, filtering
For 6 setting of layer in 5 lower layer of receiving flask, filter layer 6 includes the active carbon filtration layer 43 set gradually and the filtering for being adsorbed with thimerosal
Cotton layer 44, the air inlet 41 of receiving flask 5 is provided with the tracheae 45 for protruding into filter cotton layer 44.
By the way that active carbon filtration layer 43 is arranged in receiving flask 5 and is adsorbed with the filter cotton layer 44 of thimerosal, patient's exhalation
Gas attracted by negative pressure device 7, gas first imports filter cotton by tracheae 45, does to the bacterial virus carried in gas and tentatively disappears
Poison, then pass through the further filtering out harmful matter of activated carbon layer.
Above are merely preferred embodiments of the utility model, the protection scope of the utility model is not limited merely to above-mentioned
Embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should be pointed out that pair
For those skilled in the art, several improvements and modifications without departing from the principle of the utility model,
These improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (7)
1. a kind of anti-infection mask of breathing endoscope diagnosis and treatment, it is characterised in that: including mask body (1), the mask body (1)
On be provided with air inlet (2) and gas outlet (3), the air inlet (2) is connected with oxygen cylinder (4), and the gas outlet (3) connection is set
Receiving flask (5) are equipped with, which is provided with filter layer (6), and the receiving flask (5) is behind filter layer (6) outgassing direction
It is provided with negative pressure device (7), the air inlet (2) is provided with breather cheek valve (8), and it is single that the gas outlet (3) is provided with expiration
To valve (9), the mask body (1) includes operating space, and the operating space is provided with opening (10), which is provided with
Extraneous and deformable sealing shroud (11) is isolated, is provided with the first mounting base (12) protruded into for scope on the sealing shroud (11),
Annular groove (13) are provided on the inner wall of first mounting base (12), are provided in the annular groove (13) for being sealed with scope
The sealing ring (14) of cooperation is provided with the second mounting base (15) on the sealing shroud (11), which is provided with
The spatula component (16) in oral cavity is protruded into for endoscope, is provided on the sealing shroud (11) for installing sputum aspirator (18)
Third mounting base (17).
2. the anti-infection mask of a kind of breathing endoscope diagnosis and treatment according to claim 1, it is characterised in that: the third mounting base
(17) with sputum aspirator (18) dismantling connection, which is adjustable valve body, third mounting base (17) packet
Shell (19), spool (20), mounting plate (21), the first spring part (22) are included, the shell (19) is provided centrally with " convex " font
Through-hole (23), which reduces towards mask body (1) lateral surface direction aperture, and the shell (19) is internal to contract in aperture
Small place is provided with first boss (24), and the spool (20) and first boss (24) mutually contradict, and the spool (20) is in and leads to
Hole (23) coincide " convex " type, the first spring part (22) one end connection plate (21), the first spring part (22) other end
It connects spool (20), first spring part (22) keeps spool (20) and first boss (24) to contradict, the mounting plate (21)
It including mounting ring (25) and sliding block (26), is provided with sliding slot (27) on the shell (19), the sliding block (26) and sliding slot (27)
It is slidably connected, the sliding block (26) stretches out shell (19) outer wall by sliding slot (27), and shell (19) outer wall is provided with second
Boss (28) is contradicted between the sliding block (26) and second boss (28) and is connected with second spring part (29), and the shell (19) is outside
Wall is provided with the rubber sleeve (30) for accommodating closing second spring part (29) and sliding block (26), and the sputum aspirator (18), which is provided with, to be used for
It is mounted on the fixing piece (31) being fixedly mounted on third mounting base (17).
3. the anti-infection mask of a kind of breathing endoscope diagnosis and treatment according to claim 2, it is characterised in that: the spool (20) with
The first O-ring (32) for contacting with shell (19) inner wall is inlaid on the contact surface of shell (19) inner wall.
4. the anti-infection mask of a kind of breathing endoscope diagnosis and treatment according to Claims 2 or 3, it is characterised in that: the shell
(19) outer wall of mask body (1) lateral surface is provided with the second O-ring (33) for being interference fitted with sputum aspirator (18).
5. a kind of anti-infection mask of breathing endoscope diagnosis and treatment according to claim 1, which is characterized in that the spatula group
Part (16) includes spatula (34) and operating stick (35), which is fixedly mounted on the second mounting base (15) towards mask
Ontology (1) medial surface side, second mounting base (15) are provided with blind hole (36) towards mask body (1) lateral surface side,
The operating stick (35) and blind hole (36) grafting.
6. a kind of anti-infection mask of breathing endoscope diagnosis and treatment according to claim 1, it is characterised in that: the operating space packet
Include endoscopic technic area (37), spatula operating space (38) and sputum aspirator operating space (39), the operation of endoscopic technic area (37), spatula
Area (38) and sputum aspirator operating space (39) are respectively set sealing shroud (11), and the sealing shroud (11) is provided with telescopic bellows
(40), the bellows (40) and opening (10) are tightly connected, and the material of the bellows (40) is rubber.
7. a kind of anti-infection mask of breathing endoscope diagnosis and treatment according to claim 1, it is characterised in that: the gas outlet
(3) it is arranged in the lower end of mask body (1), the receiving flask (5) includes the upper and lower, and receiving flask (5) upper layer offers company
It picks out the air inlet (41) of port (3) and connects the venthole (42) of negative pressure device (7), filter layer (6) setting is being collected
Bottle (5) lower layer, the filter layer (6) includes the active carbon filtration layer (43) set gradually and the filter cotton layer for being adsorbed with thimerosal
(44), the air inlet (41) of the receiving flask (5) is provided with the tracheae (45) for protruding into filter cotton layer (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820113704.3U CN208756733U (en) | 2018-01-23 | 2018-01-23 | A kind of anti-infection mask of breathing endoscope diagnosis and treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820113704.3U CN208756733U (en) | 2018-01-23 | 2018-01-23 | A kind of anti-infection mask of breathing endoscope diagnosis and treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208756733U true CN208756733U (en) | 2019-04-19 |
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ID=66124916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820113704.3U Active CN208756733U (en) | 2018-01-23 | 2018-01-23 | A kind of anti-infection mask of breathing endoscope diagnosis and treatment |
Country Status (1)
| Country | Link |
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| CN (1) | CN208756733U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108310577A (en) * | 2018-01-23 | 2018-07-24 | 温州市中心医院 | A kind of anti-infection mask of breathing endoscope diagnosis and treatment |
| CN111374786A (en) * | 2020-03-27 | 2020-07-07 | 四川大学 | Negative pressure mouth gag for preventing aerosol from spreading in stomatology department |
| CN111375111A (en) * | 2020-04-01 | 2020-07-07 | 赵清振 | Multifunctional isolation mask |
| CN111388812A (en) * | 2020-03-25 | 2020-07-10 | 中国人民解放军第四军医大学 | Integrative device of disinfection is collected to aerosol suitable for new coronavirus patient atomizing |
| CN111407561A (en) * | 2020-03-30 | 2020-07-14 | 西安知北信息技术有限公司 | Negative pressure isolation operation device for oral diagnosis and treatment |
| WO2021207098A1 (en) * | 2020-04-05 | 2021-10-14 | Zonit Structured Solutions, Llc | Z-shieldtm filtered air protective system |
| WO2022003944A1 (en) * | 2020-07-03 | 2022-01-06 | オリンパスメディカルシステムズ株式会社 | Protective device for endoscope, drape, and method for operating protective device for endoscope |
| CN116271394A (en) * | 2023-05-18 | 2023-06-23 | 成都理工大学 | Convenient auxiliary respirator |
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2018
- 2018-01-23 CN CN201820113704.3U patent/CN208756733U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108310577A (en) * | 2018-01-23 | 2018-07-24 | 温州市中心医院 | A kind of anti-infection mask of breathing endoscope diagnosis and treatment |
| CN111388812A (en) * | 2020-03-25 | 2020-07-10 | 中国人民解放军第四军医大学 | Integrative device of disinfection is collected to aerosol suitable for new coronavirus patient atomizing |
| CN111374786A (en) * | 2020-03-27 | 2020-07-07 | 四川大学 | Negative pressure mouth gag for preventing aerosol from spreading in stomatology department |
| CN111407561A (en) * | 2020-03-30 | 2020-07-14 | 西安知北信息技术有限公司 | Negative pressure isolation operation device for oral diagnosis and treatment |
| CN111375111A (en) * | 2020-04-01 | 2020-07-07 | 赵清振 | Multifunctional isolation mask |
| WO2021207098A1 (en) * | 2020-04-05 | 2021-10-14 | Zonit Structured Solutions, Llc | Z-shieldtm filtered air protective system |
| WO2022003944A1 (en) * | 2020-07-03 | 2022-01-06 | オリンパスメディカルシステムズ株式会社 | Protective device for endoscope, drape, and method for operating protective device for endoscope |
| CN116271394A (en) * | 2023-05-18 | 2023-06-23 | 成都理工大学 | Convenient auxiliary respirator |
| CN116271394B (en) * | 2023-05-18 | 2023-07-25 | 成都理工大学 | Convenient auxiliary respirator |
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