CN212776818U - Negative-pressure breath filtering device for respiratory infectious disease patient - Google Patents
Negative-pressure breath filtering device for respiratory infectious disease patient Download PDFInfo
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- CN212776818U CN212776818U CN202020898067.2U CN202020898067U CN212776818U CN 212776818 U CN212776818 U CN 212776818U CN 202020898067 U CN202020898067 U CN 202020898067U CN 212776818 U CN212776818 U CN 212776818U
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Abstract
The negative pressure expiratory filtration device for respiratory infectious disease patients comprises an air exhaust hose, an air filter, an air negative pressure suction device, a flow meter and an air guide pipe; the air negative pressure suction device comprises a square casing, a battery pack, a direct current 12V power adapter, an exhaust fan and an electric control system; the exhaust fan is provided with an air inlet and an air outlet, and the air inlet and the air outlet are both positioned on the surface of the square shell; the top surface of the square shell is also provided with a speed regulation knob, and the bottom of the speed regulation knob is in electrical signal connection with the electric control system and can regulate the rotating speed of the exhaust fan; the air outlet end of the air exhaust hose is connected with the air inlet end of the air filter in a sealing manner, the air outlet end of the air filter is connected with the air inlet of the exhaust fan in a sealing manner, and the air outlet of the exhaust fan is connected with one end of the air guide tube. The device can collect almost all gas exhaled by a patient in operations such as ophthalmology and the like, and the gas is discharged into the environment after being filtered, so that the environmental pollution of a respiratory infectious disease patient to an operating room and the infection risk of medical staff can be reduced, and the comfort level of the patient is increased.
Description
Technical Field
The utility model relates to the field of medical supplies, concretely relates to respiratory infectious disease patient's negative pressure expiration filters device.
Background
The pathway of respiratory diseases such as novel coronavirus mainly involves respiratory droplet transmission and contact transmission, and there are also transmission pathways such as aerosol transmission. The virus has different survival time in vitro, the new coronavirus can be suspended in aerosol liquid drops with the diameter of less than 5 microns for 3 hours and still remain infectivity, and the survival time on the surfaces of plastic and stainless steel can be as long as 2-3 days. According to the respiratory infectious disease prevention and control scheme, medical care personnel should wear personal protective articles such as working clothes, disposable working caps, disposable gloves, medical protective masks (or power air supply filtering respirators), protective face screens or goggles, protective clothes, working shoes or rubber boots, waterproof boots and the like in the face of patients who have confirmed diagnosis. However, medical services related to selective operation during epidemic situations are greatly influenced, but when respiratory tract infectious disease patients who urgently need operation are confronted, medical staff pay attention to personal protection and select a negative pressure operating room to operate, and the negative pressure expiratory filtering device for respiratory tract infectious disease patients is also a measure for reducing the pollution to the nearby environment. The negative pressure operating room extracts air polluted by pathogenic microorganisms in the operating room in a suction mode, filters the air and then discharges the air to the adjacent air, so that the environmental pollution outside the operating room can be effectively reduced, the air environment in the operating room where a patient is located is still polluted, the risk of infection of medical personnel in the negative pressure operating room is not reduced, and the problem that how to block the way of air transmission in the operating room is also needed to be solved.
For example, in the course of ophthalmic surgery, regardless of preoperative preparation in an operating room or surgical operation, ophthalmologists and nurses are very close to respiratory tract exits of patients, and the risk of infection is high. Aiming at the defects in the prior art, the inventor of the invention intensively studies and generates the scheme in order to reduce the air pollution of the respiratory infectious disease patient in the operating room in the ophthalmic operation and the infection of the respiratory infectious disease patient to medical care personnel in the operating room through an air transmission way.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, a negative pressure breath filtering device for respiratory infectious disease patients is provided, which can reduce air pollution of the respiratory infectious disease patients to an operating room in local anesthesia operations such as ophthalmology and the like and infection of medical staff in the operating room through an air transmission way, and effectively protect the respiratory environment of the respiratory infectious disease patients.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a negative pressure expiratory filtration device for respiratory infectious disease patients comprises an air exhaust hose, an air filter, an air negative pressure suction device, an electronic flowmeter and an air guide pipe; the negative air pressure suction device comprises a square casing, a battery pack, a direct current 12V power adapter, an exhaust fan and an electric control system, wherein the battery pack, the exhaust fan and the electric control system are all arranged inside the square casing, the battery pack, the exhaust fan and the electric control system are in electric signal connection, the direct current 12V power adapter is arranged outside the square casing, the input end of the direct current 12V power adapter is connected with an external alternating current 220V power supply, and the output end of the direct current 12V power adapter is connected with the electric control system; the exhaust fan is provided with an air inlet and an air outlet, and the air inlet and the air outlet are both positioned on the surface of the square shell; the top surface of the square shell is also provided with a speed regulating knob with scales, and the bottom of the speed regulating knob is in electrical signal connection with the electric control system and can adjust the rotating speed of the exhaust fan; the air outlet end of the air exhaust hose is hermetically connected with the air inlet end of the air filter, the air outlet end of the air filter is hermetically connected with the air inlet of the exhaust fan, and the air outlet of the exhaust fan is connected with one end of the air guide pipe; the middle part of the gas guide tube is provided with an electronic flowmeter which is in electrical signal connection with the electric control system; and the middle part of the air duct is provided with an electronic flowmeter, and the electronic flowmeter is in electrical signal connection with the electric control system.
Preferably, the air inlet end of the air exhaust hose is arranged below the medical mask, and the air inlet end of the air exhaust hose can be covered above the mouth and the nose of the patient by the medical mask worn by the patient during use.
Preferably, the air inlet end of the air suction hose is connected with a semi-closed mask matched with the mouth-nose-face shape of the patient.
Preferably, the air inlet end of the air suction hose is connected with two gas collecting pipes in a branching mode towards two sides, and pipe orifices of the two gas collecting pipes are oppositely positioned above the face of the patient on two sides of the nose and the mouth of the patient.
Through the technical scheme, the utility model discloses a respiratory tract infectious disease patient's negative pressure expiration filter equipment is when the suction experimenter uses, the exhalation among the simulation ophthalmic surgery and a large amount of gas around its mouth nose to the operation room is discharged to the filter that can filter bacterium and virus, utilizes the content detection of carbon dioxide and oxygen, speculates the distribution range of patient's exhalation gas when whether using this filter equipment, through predicting its validity that blocks the aerosol propagation and the condition that improves patient's comfort level to comparing. The negative pressure expiratory filtration device can collect almost all gas exhaled by a patient in an ophthalmic operation and discharge the gas into the environment after filtration, can obviously reduce the risk of the respiratory infectious disease patient on environmental pollution of an operating room and infection of medical staff, and simultaneously increases the comfort level of the patient. Thereby the purposes of novel design, reasonable structure and good application effect are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a negative pressure breath filtration device for respiratory infectious disease patients according to an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a negative pressure respiratory filtration device for respiratory infectious disease patients according to an embodiment of the present invention;
FIG. 3 is a view showing a state of the mask connected to the negative pressure respiratory filtration apparatus for respiratory infectious disease patients according to the embodiment of the present invention;
fig. 4 is a diagram of the use state of the connection semi-closed mask of the negative pressure expiratory filtration device for respiratory infectious disease patients disclosed in the embodiment of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings:
1. the air suction hose 2, the air filter 3 and the air negative pressure suction device 31.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The present invention will be described in further detail with reference to examples and embodiments.
Examples are given.
As shown in fig. 1-2, a negative pressure expiratory filtration device for patients with respiratory infectious diseases comprises an air suction hose 1, an air filter 2, an air negative pressure suction device 3, an electronic flowmeter 6 and an air duct 4; the negative air pressure suction device 3 comprises a square casing 31, a battery pack 32, a direct current 12V power adapter 33, an exhaust fan 34 and an electric control system 35, wherein the battery pack 32, the exhaust fan 34 and the electric control system 35 are all arranged inside the square casing 31, the battery pack 32, the exhaust fan 34 and the electric control system 35 are in electric signal connection, the direct current 12V power adapter 33 is arranged outside the square casing 31, the input end of the direct current 12V power adapter is connected with an external alternating current 220V power supply, and the output end of the direct current 12V power adapter is connected with the electric control system 35; the exhaust fan 34 is provided with an air inlet and an air outlet, and the air inlet and the air outlet are both positioned on the surface of the square shell 31; the top surface of the square casing 31 is also provided with a speed regulating knob 5 with scales, and the bottom of the speed regulating knob 5 is in electrical signal connection with the electric control system 35 and can adjust the rotating speed of the exhaust fan 34; the air outlet end of the air suction hose 1 is hermetically connected with the air inlet end of the air filter 2, the air outlet end of the air filter 2 is hermetically connected with the air inlet of the exhaust fan 34, and the air outlet of the exhaust fan 34 is connected with one end of the air guide tube 4; and an electronic flowmeter 6 is arranged in the middle of the air duct 4, and the electronic flowmeter 6 is in electrical signal connection with the electric control system 35 so as to monitor the air exhaust flow of the exhaled air of the patient at any time.
Meanwhile, the air inlet end of the air exhaust hose 1 is arranged below the medical mask 7, and the air inlet end of the air exhaust hose 1 can be covered above the mouth and the nose of the patient by the medical mask 7 worn by the patient in use, as shown in fig. 3.
In addition, the negative pressure expiratory filtration device for the respiratory infectious disease patient can also be used in a matching way as shown in fig. 4, and a semi-closed mask 8 matched with the mouth-nose-face shape of the patient is connected to the air inlet end of the air suction hose 1. The air inlet end of the air exhaust hose 1 is connected with two gas collecting pipes 9 in a branching mode towards two sides, and pipe orifices of the two gas collecting pipes 9 are relatively positioned above the face at two sides of the mouth and nose of a patient, so that most of gas and droplets exhaled by the patient are collected during oral and nasal surgery.
This respiratory infectious disease patient's negative pressure expiration filters device can in time aspirate patient's expired gas under the on-state, obviously reduces carbon dioxide and repeatedly inhales, through the carbon dioxide of the suction hose 1 suction patient's mouth nose department gathering in ophthalmic surgery, reduces carbon dioxide and repeatedly inhales and reduce the complication emergence, improves comfort level in the patient's ophthalmic surgery.
In the study, the set air exhaust flow of the exhaust fan 34 is 10 times of the theoretical tidal volume of the testee calculated according to each kilogram of body weight, and the partial pressure of carbon dioxide at the outlet of the exhaust fan 34 in the starting state is about one tenth of the partial pressure of carbon dioxide exhaled at the mouth and nose of the testee and is obviously higher than the shoulder, so that the carbon dioxide-containing gas exhaled by the testee is not diffused to the shoulder, but is nearly all the exhaled carbon dioxide-containing gas is exhausted by the fan through the air duct and is not leaked to the surrounding environment of the operating room through gaps of a mask and a towel. The air exhaust hose 1 of the negative pressure respiration filtering device is connected with the air filter 2, so that the filtering effect on pathogenic microorganisms exhaled by a respiratory infectious disease patient is achieved, and therefore, the fact that almost all gas with pathogenic microorganisms exhaled by the respiratory infectious disease patient can be exhausted after being filtered by the air filter 2 through the device can be inferred, the pathogenic microorganisms are effectively prevented from diffusing into air of an operating room along with the exhaled gas, air pollution in the operating room is greatly reduced, and implementation of an ophthalmic local anesthesia operation is not affected.
In this case, the negative pressure respiratory tract infectious disease patient breathing filter device of the present invention simulates a large amount of gas exhaled by an ophthalmic surgery and around the mouth and nose thereof when a subject is sucked for use, and exhausts the gas to an operating room through the air filter 2 capable of filtering bacteria and viruses, and estimates the distribution range of the gas exhaled by the patient when the filter device is used or not by using the content detection of carbon dioxide and oxygen, and estimates the effectiveness of blocking aerosol transmission and the improvement of the comfort of the patient by comparing the distribution range. The negative pressure expiratory filtration device can collect almost all gas exhaled by a patient in an ophthalmic operation and discharge the gas into the environment after filtration, can obviously reduce the risk of the respiratory infectious disease patient on environmental pollution of an operating room and infection of medical staff, and simultaneously increases the comfort level of the patient. Thereby the purposes of novel design, reasonable structure and good application effect are achieved.
The above description is only the preferred embodiment of the negative pressure expiratory filtration device for patients with respiratory infectious diseases, and it should be noted that, for those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.
Claims (4)
1. A negative pressure expiratory filtration device for respiratory infectious disease patients is characterized by comprising an air exhaust hose, an air filter, an air negative pressure suction device, an electronic flowmeter and an air guide pipe; the negative air pressure suction device comprises a square casing, a battery pack, a direct current 12V power adapter, an exhaust fan and an electric control system, wherein the battery pack, the exhaust fan and the electric control system are all arranged inside the square casing, the battery pack, the exhaust fan and the electric control system are in electric signal connection, the direct current 12V power adapter is arranged outside the square casing, the input end of the direct current 12V power adapter is connected with an external alternating current 220V power supply, and the output end of the direct current 12V power adapter is connected with the electric control system; the exhaust fan is provided with an air inlet and an air outlet, and the air inlet and the air outlet are both positioned on the surface of the square shell; the top surface of the square shell is also provided with a speed regulating knob with scales, and the bottom of the speed regulating knob is in electrical signal connection with the electric control system and can adjust the rotating speed of the exhaust fan; the air outlet end of the air exhaust hose is hermetically connected with the air inlet end of the air filter, the air outlet end of the air filter is hermetically connected with the air inlet of the exhaust fan, and the air outlet of the exhaust fan is connected with one end of the air guide pipe; and the middle part of the air duct is provided with an electronic flowmeter, and the electronic flowmeter is in electrical signal connection with the electric control system.
2. The negative pressure expiratory filtration device for the patients with the respiratory infectious diseases, according to claim 1, wherein the air inlet end of the air suction hose is arranged below the medical mask, and the medical mask worn by the patients can cover the air inlet end of the air suction hose above the mouth and nose of the patients when in use.
3. The negative pressure expiratory filter device for the patient with the respiratory infectious disease as claimed in claim 1, wherein the air inlet end of the air suction hose is connected with a semi-closed mask which is matched with the face shape of the mouth, nose and face of the patient.
4. The negative pressure expiratory filtration device for the patients with the respiratory infectious diseases as claimed in claim 3, wherein the air inlet end of the air suction hose is branched to two sides to connect two gas collection pipes, and the pipe orifices of the two gas collection pipes are relatively positioned above the face of the patients on two sides of the mouth and nose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020898067.2U CN212776818U (en) | 2020-05-25 | 2020-05-25 | Negative-pressure breath filtering device for respiratory infectious disease patient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020898067.2U CN212776818U (en) | 2020-05-25 | 2020-05-25 | Negative-pressure breath filtering device for respiratory infectious disease patient |
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| Publication Number | Publication Date |
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| CN212776818U true CN212776818U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020898067.2U Active CN212776818U (en) | 2020-05-25 | 2020-05-25 | Negative-pressure breath filtering device for respiratory infectious disease patient |
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- 2020-05-25 CN CN202020898067.2U patent/CN212776818U/en active Active
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