CN111449855A

CN111449855A - Negative pressure high-efficiency particle air filtering, purifying and isolating platform for infectious disease infection source

Info

Publication number: CN111449855A
Application number: CN202010166424.0A
Authority: CN
Inventors: 曹成喜; 刘小平; 王宇兴; 李红根; 张强; 刘伟文
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-07-28

Abstract

The invention relates to a negative pressure high-efficiency particle air filtering, purifying and isolating platform for an infectious disease infection source, which comprises a bearing body; the elastic sealing mechanism is detachably arranged at the upper part of the bearing body, and a closed space is formed between the elastic sealing mechanism and the bearing body; a high-efficient granule air filter of negative pressure constructs, locates the lower part of supporting body, includes: the fan is communicated with the closed space through the air inlet channel and enables the closed space to form a negative pressure environment; the high-efficiency particle air filtering membrane component is arranged at the outlet of the air inlet channel and is used for filtering the air pumped by the fan; and a plane ultraviolet lamp for ultraviolet disinfection. The negative pressure in the operation area in the epidemic prevention transportation, clinical diagnosis and treatment, biological safety and biochemical anti-terrorism process is ensured through the design, the polluted air such as pathogens, spray, aerosol, body surface emissions and the like exhaled by an infected patient is limited in the sealing cover and is removed in time, and the infection risk in the medical staff rescue and sanitary staff epidemic prevention process is reduced.

Description

Negative pressure high-efficiency particle air filtering, purifying and isolating platform for infectious disease infection source

Technical Field

The invention belongs to the field of biomedical equipment, and particularly relates to a negative-pressure efficient particle air filtering, purifying and isolating platform for an infectious disease infection source.

Background

In recent years, various infectious diseases have been abused worldwide, seriously compromising human health safety, such as SARS (W.D. L i, Z L. Shi, m.yu, et al, Science,2005,310,676-679), ebola (m.bermejo, j.d. rodi biez-Teijeiro, g.ilera, et al, Science,2006,314,1564), middle east respiratory syndrome (a. zumula, d.s.hui, s.perlman, lttt translation = L "&gttl &lttt/t &gttanacet, 2015,386,995-1007), american flu (a.m.presaniis, d.d.angelis, a.hagy, Plos, 2009, wo 6, n, wo 207.7, mej, meq., mex, neto, mex, me.

Aiming at the prevention and control of new infectious diseases, an isolation ward can be built. The invention discloses a novel practical patent CN207350579U which discloses a modular intelligent isolation ward to meet the requirements of infectious disease prevention and control. The stratosphere ward or the isolation ward can meet partial requirements of infectious disease prevention and control, reduce medical infection and patient cross infection, but have the problems of low filtration efficiency, high cost, incapability of moving and the like due to the filtration treatment of the polluted air with an ultra-large volume; particularly, due to the lack of a high efficiency particle air filtration membrane (high efficiency particle air filtration), virus particles with the size of 10-400 nm are difficult to filter and remove. In addition, the construction period is long, and the emergency requirements including but not limited to infectious diseases, biochemical counterterrorism and biochemical protection in field operations cannot be met.

Patent CN1704036A discloses a negative pressure disinfection sickbed, wherein an air outlet is arranged below the sickbed, the air outlet is connected with an air exhaust pipeline, the outlet of the air exhaust pipeline is connected with the inlet of a binary ozone and chlorine dioxide disinfection machine, the outlet of the binary disinfection machine is connected with an exhaust fan, negative pressure is formed in the sickroom, and waste gas is exhausted under the action of the negative pressure after being disinfected by the binary disinfection machine; the fresh air is sent into the ward through each air supply outlet on the wall of the top of the ward; an aerosol spraying disinfection device is also arranged in the ward to spray atomized disinfection liquid into the ward. Utility model patents CN208640145U and CN208942673U disclose an isolation sickbed, which comprises a bed body, an isolation cabin and a fan; the isolation cabin comprises a main body frame and a killing system, a fan enables negative pressure to be formed between the bed body and the main body frame, and at least one air return opening is formed in the main body frame; the isolation sickbed can timely absorb and sterilize gas with germs discharged by a patient, and fully and thoroughly isolate a transmission source. The isolation bed can effectively kill and remove microbial bacteria (including partial viruses), but virus particles with the size of 10-400 nm are difficult to filter and remove due to the lack of a high-efficiency particle air filtration membrane (HEPA); moreover, when medical care, diagnosis, treatment and epidemic prevention are carried out, a rigid operation window must be opened, air convection vortex is caused, and polluted air in the isolation bed directly diffuses and pollutes the whole air in the ward; moreover, the isolation bed lacks a flexible operation window for medical care, diagnosis, treatment and epidemic prevention of medical staff, and is difficult to adapt to the requirements of various medical care, diagnosis, treatment and epidemic prevention operations.

Disclosure of Invention

The invention aims to solve the problems and provide a negative pressure high-efficiency particle air filtering, purifying and isolating platform for infectious disease infection sources, so as to reduce the infection risk in the medical personnel rescue and sanitary personnel epidemic prevention processes.

The purpose of the invention is realized by the following technical scheme:

a negative pressure high efficiency particle air filtration purification isolation platform of infectious disease infection source, comprising:

a carrier for carrying a patient;

the elastic sealing mechanism is detachably arranged at the upper part of the bearing body, and a closed space is formed between the elastic sealing mechanism and the bearing body;

a high-efficient granule filtration of negative pressure purifies mechanism locates the lower part of supporting body includes:

the fan is communicated with the closed space through an air inlet channel and enables the closed space to form a negative pressure environment; and

and the negative-pressure high-efficiency particle air filtering membrane component is arranged at the outlet of the air inlet channel and is used for filtering the air pumped in by the fan.

The high-efficiency particle air filtering membrane component and the fan are arranged, the closed space formed between the elastic sealing mechanism on the upper portion of the supporting body and the supporting body is exhausted, so that the closed space forms a negative pressure environment, meanwhile, the air filtering membrane component effectively filters the particle air sucked by the fan, and the filtered clean air is discharged outside. Through the design, the negative pressure in the operation area in the epidemic prevention transportation, clinical diagnosis and treatment, biological safety and biochemical anti-terrorism processes is ensured, the polluted air such as virus particles, bacteria particles, spray, aerosol, body surface emissions and the like exhaled by an infected patient is limited in the sealing cover and is removed in time, and the infection risk in the medical staff rescue and sanitary staff epidemic prevention processes is reduced.

Furthermore, the inlet of the air inlet channel is communicated into the closed space, and an air inlet net port is arranged at the inlet.

Furthermore, an ultraviolet disinfection lamp is arranged in the negative pressure filtering and purifying mechanism and is arranged in the air inlet channel and positioned above the high-efficiency particle air filtering membrane component.

Further, the negative-pressure efficient particle air filtering membrane assembly comprises a coarse filtering membrane of which the upper layer can efficiently filter particles with the particle size of more than 5 microns in the air and an efficient particle air filtering membrane of which the lower layer can perform key micro-nano filtration on particles with the particle size of 10nm to 10 microns in the air, and the high-pressure efficient particle air filtering membrane assembly is arranged in a frame structure through a supporting structure. Coarse filtration membrane materials include, but are not limited to, hydrophobic nonwovens, high efficiency particulate air filtration membrane materials include, but are not limited to, glass fibers; a coarse filter membrane or fine filter membrane "WW" shaped support structure is mounted in the rim structure.

Furthermore, the elastic sealing mechanism comprises an elastic supporting rod, a transparent elastic sealing cover and an anastomosis piece, wherein the elastic supporting rod is arranged at the upper part of the bearing body, and the elastic sealing cover is covered on the elastic supporting rod and is connected with the bearing body in a sealing way through the anastomosis piece.

Furthermore, the elastic supporting rod comprises an elastic supporting rod main body, an elastic supporting rod inserting tube and an elastic supporting rod interface tube, the elastic supporting rod inserting tube is installed on the supporting body, one end of the elastic supporting rod main body is connected with the elastic supporting rod inserting tube, and the other end of the elastic supporting rod main body is connected with the elastic supporting rod interface tube;

the elastic sealing cover comprises an elastic transparent sealing cover main body, and the material of the elastic transparent sealing cover main body comprises but is not limited to polymer plastics;

the anastomotic piece comprises an upper sealing strip connected with the elastic transparent sealing cover main body and a lower sealing strip connected with the supporting body, and the materials of the upper sealing strip and the lower sealing strip include but are not limited to soft magnetic attraction or a zipper.

Furthermore, a sealable material transfer port and a plurality of elastic arm sleeves are arranged on the elastic sealing cover, the elastic arm sleeves are of bag-shaped structures, the inlet and the outlet are hermetically connected with the elastic sealing cover, and the inner ends of the elastic arm sleeves extend into the closed space.

Furthermore, the piece is inhaled to elasticity arm cover includes elasticity arm cover main part and elasticity arm cover magnetism, its material of elasticity arm cover main part includes but not limited to synthetic rubber and natural rubber, but the piece is inhaled to elasticity arm cover magnetism locate of closing automatically elasticity arm cover main part middle part.

Further, the carrier is a movable hospital bed or wheelchair.

Furthermore, the sickbed comprises a bed body, bed legs and universal wheels, and is provided with a treatment pipeline and an access hole for a cable of monitoring and treatment equipment; the wheelchair is foldable or non-foldable, and the foldable wheelchair can be unfolded to form a sickbed and comprises a seat, wheels, pedals and foldable bed legs.

The invention designs a negative pressure high-efficiency particle air filtering, purifying and isolating platform for infectious disease patients, which has the following protection principle: the efficient particle air filtering and purifying membrane component and the fan are installed below a sickbed, an air passage at the inlet of the fan is upwards and directly communicated with the sickbed for operation to form an air inlet, a transparent elastic sealing cover is arranged above the sickbed, the sealing cover and the sickbed body are sealed in a non-fusion way (such as magnet adsorption or a zipper hinge), and a plurality of pairs of elastic arm sealing sleeves and inlet and outlet windows are installed at different positions of the sealing cover. When the air filter is used, the fan is started, the fan works to suck serious small-volume polluted air in the sealing cover to pass through the high-efficiency particle air filtering membrane component, and various particles with the diameter of 10nm to 100um in the polluted air are effectively filtered and removed through modes such as particle diffusion, collision, blocking, embedding, electrostatic adsorption and the like, wherein the particles comprise viruses, pathogenic bacteria, pollen, insect mites and the like; so that the exhaust gas exhaled by the patient and the polluted air are purified and then discharged to various small environments, including but not limited to operating rooms, sickrooms, pathological dissection rooms, ambulances, cabins, carriages and biochemical anti-terrorist small environments; and because of the negative pressure in the sealing cover, the polluted air in the sealing cover can not directly contact medical epidemic prevention and biochemical anti-terrorist personnel from the upper part of the platform, thereby effectively reducing the risk of infecting pathogenic microorganisms of the medical epidemic prevention and biochemical anti-terrorist personnel.

The invention has the following advantages:

1. compared with the existing ordinary ward or operating room, the purification efficiency is improved by dozens to thousands of times, the infection risk of the site treatment of epidemic prevention medical staff is reduced by 20 times to thousands of times, taking a ward with 30 square meters and 100 cubes as an example, suppose that a patient sprays 10000 thousand of droplets and virus particles into the ward within ten minutes due to severe cough, and suppose that the staff can infect the disease by contacting 5000 virus particles, if the patient does not do not undergo any treatment, 100 thousand of pollution particles are in the air per cubic meter in the ward, even if the medical staff wears an N95 mask (the particle interception rate is 95 percent), the medical staff can still inhale 10000 of polluted virus particles into the respiratory tract (inhales 20L air per minute) within 10 minutes, so that 100 percent of the epidemic prevention medical staff are infected, and the operation of many epidemic prevention treatment nursing is over 10 minutes, so the medical staff can hardly avoid the infection in the ICU ward with serious infection.

However, if the technical device of the invention is adopted, the infection chance of the medical epidemic prevention personnel can be greatly reduced. When the device is Used, the droplets, eye and nose secretion, aerosol, excrement and urine and the like of a patient are sucked by a fan under the action of negative pressure and purified by a high-efficiency particle air filtering membrane component, and the particles are supposed to have the blocking rate of 95 percent, wherein the blocking rate of the particles reaches the HEPA 11(H11) standard (US DOE-STD-3020HEPA Filters Used by DOE modulators, 2005 Edition), and the amount of the particles discharged into a ward after filtration and purification of small space air (14) polluted by 10000 ten thousand virus particles is 500 ten thousand particle viruses, and each cubic air of the ward has 5 thousand particle viruses under the same condition. The number of the pollution particles absorbed into the respiratory tract by medical staff wearing the N95 mask in 10 minutes is 500. Compared with 10000 particles in the common ICU ward, the infection risk of the ward air treated by the invention is reduced by 20 times. If the HEPA E12(H12) standard is adopted, namely the retention rate reaches 99.5 percent, the infection risk is further reduced by 200 times; if the 95% killing effect of the microorganisms of the ultraviolet lamp is considered, the infection risk is further reduced to 2000 times, which is one of the great advantages of the invention.

2. Compared with the existing stratosphere ward and isolation ward, the purification efficiency is improved by dozens of times, and the infection risk of medical and epidemic prevention personnel is reduced by dozens of times. If the conditions of air disturbance, convection, vortex and the like caused by the treatment operation of medical and epidemic prevention personnel are not considered, the stratospheric ward can effectively purify various droplets, dispersed substances, aerosol and the like discharged by a patient, and ensure the safety of almost 100 percent of medical and epidemic prevention personnel. However, under the condition of diagnosis and treatment of medical care personnel, the vortex, the disturbance and the convection caused by walking and operation, which are brought by the medical care epidemic prevention personnel and the bodies of patients, exist. Assuming that these interference factors cause 10% stratosphere disruption and that the air conditioner is updating 100 cubes of room air every half hour; the medical epidemic prevention staff can inhale 500-1000 pollution particles into the respiratory tract in 10 minutes, namely the pollution particles are slightly worse than the HEPA E11(H11) standard. But obviously does not meet the standard of HEPA E12(H12), and cannot achieve the ultralow risk of simultaneously starting ultraviolet disinfection.

3. Compared with various existing isolation beds (such as a negative pressure disinfection sickbed disclosed by CN1704036A and an isolation sickbed disclosed by CN208640145U and CN 208942673U), the invention has the following remarkable advantages.

First, the present invention has high filtration and removal efficiency against viruses and bacteria. The existing isolation bed adopts an air filtering filter element, can effectively filter micron-sized particles and above, but lacks a key high-efficiency particle air filtering membrane (HEPA) capable of effectively filtering 10 nm-5.0 m particles; the virus particles are generally between 10nm and 400nm, and the diameter of bacteria is generally 0.8-5 microns; therefore, the isolation beds are good for preventing and controlling bacterial infectious diseases, but have great defects in preventing and controlling viral infectious diseases.

Secondly, the invention effectively avoids secondary pollution and infection caused by various polluted air convection eddy currents and the like brought by medical care, diagnosis, treatment and epidemic prevention operation. The rigid operation window is required to be opened when the isolation bed is used for medical care, diagnosis, treatment and epidemic prevention, air convection vortex is caused, and polluted air in the isolation bed directly diffuses and pollutes the whole air in a ward, so that secondary infection is caused. However, the invention adopts a series of soft designs, thereby effectively solving the problem.

Thirdly, due to the adoption of the soft and transparent design, the invention is very beneficial to various manual operations of medical care, diagnosis, treatment and epidemic prevention. The existing isolation bed adopts a rigid structure, and lacks a flexible operation window for medical care, diagnosis, treatment and epidemic prevention of medical staff; various manual operation measures are needed for medical care, diagnosis and treatment and epidemic prevention, and the control range is from beginning to end. Obviously, these rigid designs are difficult to adapt to the needs of various medical, diagnostic, therapeutic and epidemic prevention procedures. On the contrary, the invention adopts a soft and transparent design, and can meet the requirements of various medical care, diagnosis, treatment and epidemic prevention operations.

4. Greatly reduces the surface pollution density of the protective clothing, and effectively avoids the risk of secondary pollution infection of medical epidemic prevention personnel. Respiratory infections occur not only in first places such as wards, operating rooms, anatomical rooms, airplanes and high-speed railways, but also in potential secondary infection risks due to surface contamination of protective clothing, including clothing, shoes, gloves and the like. Obviously, the higher the density of the droplets, aerosols and the like in the air, the more serious the pollution density on the surface of the protective clothing, including the higher the risk of secondary infection of medical and epidemic prevention personnel and the like.

5. Compared with the construction cost of stratosphere wards and isolation wards, the construction cost of the invention is very low, the operation cost is lower, the integral construction of the stratosphere wards generally needs the stratosphere wards, the negative pressure dressing room, the negative pressure working channel and the like, generally one set is 60-80 square meters, the decoration cost of only one set of the stratosphere wards is about 100 ten thousand ￥, meanwhile, a 20-30 Kw power air conditioner is generally needed during use, the nursing and maintenance of sterile disinfection is also between 10-20 ten thousand, the cost of the invention is about 3 thousand ￥ due to the large power consumption of 10-20 Kw., the power consumption is less than 200 watts, the construction cost is respectively reduced by 33 and 5 times compared with the stratosphere wards and the isolation ward cost is reduced by 200 times and 50 times compared with the stratosphere wards.

6. Compared with the construction period of stratospheric wards, the construction time of the invention is greatly shortened. The integral construction of stratosphere wards generally requires professional team to design the stratosphere wards, a negative pressure dressing room, a negative pressure working channel, an article transfer port, air filtration, air circulation and the like; the design construction period is half a year to 1 year or even longer, and the emergency prevention and control rescue requirements of newly-released infectious diseases, biochemical counterterrorism and biochemical weapon attacks cannot be met in a short period. The invention has the obvious advantages of instant assembly and use, improvement on the basis of the existing sickbed or wheelchair, easy assembly, use and disassembly. If the unit storeroom has stock, the whole system can be built within half an hour. Obviously, compared with the construction of stratospheric ward, the construction period of the invention is extremely short, and the invention is particularly suitable for, but not limited to, infectious disease epidemic control, hospital infectious disease treatment, armed police biochemical anti-terrorism and army biochemical and nuclear warfare attack prevention.

7. The invention has mobility and wide compatibility. Obviously, the stratospheric ward is not mobile. The sickbed-type and seat-type filtering, purifying and isolating platform has mobility (shown in a figure I, a figure II, a figure III and a figure IV), and can be used for epidemic prevention and transportation of infected patients, sickrooms, operating rooms, pathological anatomy rooms, infected animal laboratories, field hospitals, biochemical protection and nuclear radiation protection; not only can be used for the epidemic prevention and control of a respiratory system, but also can be used for various internal and external emergency treatment under other epidemic situations. Therefore, the negative pressure filtering, purifying and isolating platform for the infectious disease infection source has wide applicability, soft adaptability and excellent compatibility.

Drawings

FIG. 1 is a schematic design diagram of a negative pressure high efficiency particle air filtration and purification isolation platform according to embodiment 1 of the present invention;

FIG. 2 is a schematic design diagram of a negative pressure high efficiency particle air filtration and purification isolation platform according to embodiment 2 of the present invention;

FIG. 3 is a schematic design diagram of a negative pressure high efficiency particle air filtration purification isolation platform according to embodiment 3 of the present invention;

FIG. 4 is a schematic design diagram (folding) of a negative pressure high efficiency particle air filtration and purification isolation platform according to embodiment 4 of the present invention;

FIG. 5 is a schematic design diagram (expanded) of a negative pressure high efficiency particle air filtration and purification isolation platform according to embodiment 4 of the present invention;

FIG. 6 is a schematic structural view of an air filtration membrane module according to an embodiment of the present invention;

FIG. 7 is a schematic view of the filter membrane of FIG. 6;

fig. 8 and 9 are partially enlarged schematic views of a and B in fig. 6 and 7, respectively;

FIG. 10 is a schematic structural diagram of a blower according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of an elastic sealing mechanism according to an embodiment of the present invention;

FIG. 12 is a schematic view of the structure of the elastic arm cuff (expanded) according to the embodiment of the present invention;

fig. 13 is a schematic structural view (closed) of the elastic arm cuff of the embodiment of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Example 1

As shown in fig. 1, a negative pressure high efficiency particle air filtering, purifying and isolating platform for mosquito net type infectious disease patients comprises: the sickbed platform 9 is used for a patient to lie on when in treatment, the sickbed platform 9 is movable, is provided with bed legs 16 for supporting a bed body and movable universal wheels 17, and is also provided with access holes 20 for various treatment pipelines and access holes 21 for cables of various monitoring and treatment equipment.

An elastic supporting rod 10 is arranged on the upper portion of the sickbed platform 9 and comprises but is not limited to an elastic foldable plastic rod, an elastic sealing cover 11 is arranged outside the elastic supporting rod 10 and comprises but is not limited to an elastic airtight fully transparent polymer film, and a closed space is formed between the elastic sealing cover 11 and the sickbed platform 9. Sick bed platform 9 lower part is equipped with a high-efficient granule filtration of negative pressure and purifies mechanism, includes fan 2 and high-efficient granule filtration membrane subassembly 1 that are linked together through intake duct 7 and enclosure, sets up air inlet net gape 8 at intake duct 7 entry, and fan 2 makes this enclosure form the negative pressure environment, as figure 10, for fan 2's schematic structure diagram, for fan main part 2.1, including motor and impeller, fan wind channel 2.2, fan closing cap 2.3 export 4. The air filtering membrane assembly 1 is arranged at an outlet of the air inlet channel 7 and is used for filtering air pumped in by the fan 2.

The high-efficiency particle air filtering membrane module 1 plays a key role in purifying the polluted air 14 in the sealed cover 11, the components of the high-efficiency particle air filtering membrane module include but are not limited to glass fiber membranes and non-woven fabrics, the high-efficiency particle air filtering membrane module 1 and the fan 2 are supported by the shell 3, and the purified air 5 is discharged from the air supply outlet 4. In addition, be equipped with ultraviolet disinfection lamp 6 in the high-efficient granule filtration of negative pressure air purification mechanism, can be supplied power by lithium cell 18, ultraviolet disinfection lamp 6 is located intake duct 7, is located high-efficient granule filtration membrane module 1's top, kills the pathogenic microorganism that adsorbs on filtration membrane surface when opening.

As shown in fig. 6-9, the high efficiency particulate air filtration membrane module 1 comprises an upper coarse filtration membrane 1.1 and a lower fine filtration membrane 1.2, the coarse filtration membrane material includes but is not limited to hydrophobic nonwoven fabric, the fine filtration membrane material includes but does not meet glass fiber, and the coarse filtration membrane or the fine filtration membrane is mounted in a frame structure 1.4 through a "WW" shaped support structure 1.3.

The elastic sealing mechanism comprises an elastic supporting rod, a transparent elastic sealing cover and an anastomosis piece 15, the elastic supporting rod is arranged at the upper part of the sickbed platform 9, and the elastic sealing cover is arranged on the elastic supporting rod and is in sealing connection with the sickbed platform 9 through the anastomosis piece. As shown in fig. 11, the elastic strut includes an elastic strut main body 10.1, an elastic strut insert tube 10.2 and an elastic strut interface tube 10.3, the elastic strut insert tube 10.2 is installed on the hospital bed platform 9, one end of the elastic strut main body 10.1 is connected with the elastic strut insert tube 10.2, and the other end is connected with the elastic strut interface tube 10.3; the elastic sealing cover comprises an elastic transparent sealing cover main body 11.1, and the material of the elastic transparent sealing cover main body comprises but is not limited to polymer plastics; the anastomotic piece comprises an upper sealing strip 11.2 connected to the elastic transparent sealing cover main body 11.1 and a lower sealing strip 11.3 jointed on the sickbed platform 9, and the materials of the upper sealing strip and the lower sealing strip include but are not limited to soft magnetic attraction or a zipper.

The elastic sealing cover is provided with a sealable material transfer port 13 and a plurality of elastic arm sleeves 12, as shown in fig. 12 and 13, the elastic arm sleeves 12 are of bag-shaped structures, an inlet and an outlet 12.3 are hermetically connected with the elastic sealing cover 11, and the inner ends of the elastic arm sleeves extend into the closed space. The elastic arm sleeve comprises an elastic arm sleeve main body 12.1 and an elastic arm sleeve magnetic attraction piece 12.2, the elastic arm sleeve main body is made of materials including but not limited to synthetic rubber and natural rubber, and the elastic arm sleeve magnetic attraction piece can be automatically closed and arranged in the middle of the elastic arm sleeve main body.

The protection principle is as follows: the efficient particle air filtering membrane component and the fan are installed below the operation sickbed, an air passage at the inlet of the fan is upwards and directly communicated with the operation sickbed to form an air inlet, a transparent elastic sealing cover is arranged above the sickbed, the sealing cover and the bed body are in non-fusion sealing (such as magnet adsorption or a zipper hinge), and a plurality of pairs of elastic arm sealing sleeves and inlet and outlet windows are installed at different positions of the sealing cover. When the device is used, the fan is started, the fan works to suck the severely polluted air in the sealing cover to pass through the high-efficiency particle air filtering membrane component, the arrow 19 indicates the static pressure inside and outside the sealing cover, and various particles with the diameter of 10nm to 100um in the polluted air, including viruses, germs, pollen, insect mites and the like, are effectively removed through the filtering membranes in modes of particle diffusion, collision, blocking, embedding, electrostatic adsorption and the like; so that the exhaled gas and the polluted air of the patient are purified and then discharged to various small environments, including but not limited to operating rooms, sickrooms, pathological dissection rooms, ambulances, cabins, carriages and biochemical anti-terrorist small environments; and because of the negative pressure in the sealing cover, the polluted air in the sealing cover can not directly contact medical epidemic prevention and biochemical anti-terrorist personnel from the upper part of the platform, thereby effectively reducing the risk of infecting pathogenic microorganisms of the medical epidemic prevention and biochemical anti-terrorist personnel.

Example 2

As shown in fig. 2, the negative pressure high efficiency particle air filtration, purification and isolation platform for a tent type infectious disease patient is the same as that of the comparison document 1 except that the sealing cover 11 is in a tent type.

Example 3

Referring to fig. 3, a negative pressure high efficiency particle air filtration, purification and isolation platform for wheelchair type infectious disease patients, which is more convenient for long distance transportation than the embodiment 1-2, is suitable for the infectious disease patients with no serious symptoms but inconvenient actions and needs isolation, and in fig. 3, the numbers are as follows:

the 1 is a high-efficiency particle air filtering membrane which plays a key role in purifying the polluted air 14 in the sealing cover 10 and is made of, but not limited to, a glass fiber membrane and non-woven fabrics;

2 is a fan, which forms negative pressure in the sealing cover 11 and is used for sucking the polluted air 14 in the sealing cover 11 and passing through the filtering membrane 1;

3, a filter membrane 1 and a fan 2 support shell;

4 is the air supply outlet of the fan 2, and the purified air 5 is discharged from the air supply outlet 4;

5 is the purified air;

6, an ultraviolet disinfection lamp is used for killing pathogenic microorganisms adsorbed on the surface of the filtering membrane 1 when the ultraviolet disinfection lamp is started;

7 is an air inlet channel, and the polluted air 14 reaches the filtering membrane 1 through the air inlet channel;

8 is an air inlet net port, and polluted air 14 in the sealing cover 11 enters the air inlet channel 7 through the air inlet net port;

9 is a wheelchair on which the patient lies and sits during transportation;

10 is a resilient strut, including but not limited to a resiliently foldable plastic rod;

11 is an elastic sealing enclosure including, but not limited to, an elastic airtight transparent polymeric film;

12 is an elastic arm cuff including, but not limited to, an elastic airtight transparent polymeric membrane;

13 is a sealable material transfer port, and food and water enter and exit through the material transfer port 13;

14 is air contaminated by the patient, including but not limited to patient-borne fine particles of pathogenic microorganisms;

15 is a stapling element including, but not limited to, a magnetically attracted seal or a pair of zipper hinges;

16 is a wheel for supporting the seat and moving;

17 is a pedal;

the 18 arrows indicate the static pressure inside and outside the seal housing;

19 access holes for various conduits;

20 access holes for various cables;

21 a lithium battery;

22 universal wheels.

Example 4

Referring to fig. 4 and 5, a negative pressure high efficiency particle air filtration purification isolation platform for wheelchair bed type infectious disease patients, compared with the embodiment 3, the wheelchair can be unfolded into a bed body, and the infectious disease patients with serious symptoms and difficult sitting up are shown, in fig. 4 and 5, 22 is a bed leg, 23 is a universal wheel, and the rest is the same as the embodiment 3.

The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The utility model provides a negative pressure high efficiency granule air filtration of infectious diseases infectious source purifies isolation platform which characterized in that includes:

a carrier for carrying a patient;

and the high-efficiency particle air filtering membrane component is arranged at the outlet of the air inlet channel and is used for filtering the air pumped in by the fan.

2. The negative pressure high efficiency particle air filtering, purifying and isolating platform of claim 1, wherein the inlet of the air inlet channel opens into the enclosed space, and an air inlet net port is provided at the inlet.

3. The negative pressure high efficiency particle air filtering, purifying and isolating platform of the infectious disease infection source of claim 1, wherein an ultraviolet disinfection lamp is arranged in the negative pressure high efficiency particle air filtering and purifying mechanism, and the ultraviolet disinfection lamp is arranged in the air inlet channel and above the negative pressure high efficiency particle air filtering membrane component.

4. The negative pressure high efficiency particle air filtration, purification and isolation platform of the infectious disease infection source of claim 1, wherein the negative pressure high efficiency particle air filtration membrane module comprises a coarse filtration membrane with an upper layer capable of efficiently filtering particles with a size of more than 5 μm in the air and a high efficiency particle air filtration membrane with a lower layer capable of performing key micro-nano filtration on particles with a size of 10nm to 10 μm, and the high efficiency particle air filtration membrane is installed in the frame structure through a support structure.

5. The negative pressure high efficiency particle air filtering, purifying and isolating platform of claim 1, wherein the elastic sealing mechanism comprises an elastic support rod, a transparent elastic sealing cover and an anastomosis member, the elastic support rod is installed on the upper portion of the supporting body, the elastic sealing cover is installed on the elastic support rod and is connected with the supporting body in a sealing manner through the anastomosis member.

6. The negative pressure high efficiency particle air filtration purification isolation platform of infectious disease infection source of claim 5, wherein the elastic strut comprises an elastic strut main body, an elastic strut insertion tube and an elastic strut mouthpiece, the elastic strut insertion tube is mounted on the supporting body, one end of the elastic strut main body is connected with the elastic strut insertion tube, and the other end is connected with the elastic strut mouthpiece;

7. The negative pressure high efficiency particle air filtration purification isolation platform of infectious disease infection source of claim 5, wherein said elastic sealing cover is provided with a sealable material transfer port, and a plurality of elastic arm covers, said elastic arm covers are bag-shaped, the inlet and outlet are hermetically connected with the elastic sealing cover, and the inner end is deep into the enclosed space.

8. The negative pressure high efficiency particle air filtering, purifying and isolating platform as claimed in claim 7, wherein the elastic arm sleeve comprises an elastic arm sleeve body and an elastic arm sleeve magnetic attraction member, the elastic arm sleeve body is made of materials including but not limited to synthetic rubber and natural rubber, and the elastic arm sleeve magnetic attraction member is arranged in the middle of the elastic arm sleeve body and can be automatically closed.

9. The negative pressure high efficiency particle air filtration purification isolation platform of infectious disease infection source of any one of claims 1-8, wherein the carrier is a movable hospital bed or wheelchair.

10. The negative pressure high efficiency particle air filtration purification isolation platform of the infectious disease infection source of claim 9, wherein the hospital bed comprises a bed body, bed legs and universal wheels, and is provided with access holes for treatment pipelines and cables of monitoring and treatment equipment;

the wheelchair is foldable or non-foldable, and the foldable wheelchair can be unfolded to form a sickbed and comprises a seat, wheels, pedals and foldable bed legs.