CN111494831A

CN111494831A - Novel high-efficient air filtration artificial nose

Info

Publication number: CN111494831A
Application number: CN202010430917.0A
Authority: CN
Inventors: 朱杨子; 王立伟; 姚瑞; 吴从友; 周美艳; 王荣国
Original assignee: Individual
Current assignee: Xuzhou Medical University
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-08-07
Anticipated expiration: 2040-05-20
Also published as: CN111494831B

Abstract

The invention discloses a novel efficient air filtering artificial nose, and belongs to the technical field of medical and health biological protection. A damp and heat exchange filter element is arranged in the sealed shell; a socket is arranged on the side surface of the sealing shell opposite to the damp and heat exchange filter element, and the damp and heat exchange filter element is inserted into the sealing shell from the socket; a bottom plate and a top plate are fixed in the sealing shell, bottom supporting plates are uniformly arranged on the bottom plate, and top supporting plates are uniformly arranged on the top plate; the folding filter element is arranged between the bottom supporting plate and the top supporting plate, and the bottom supporting plate and the top supporting plate are inserted into the bending part of the folding filter element in a staggered manner. The folding filter element adopts the PTEF microporous membrane, can realize long-time mechanical filtration of virus and other pollution particles, and the folded angle design enlarges the surface area of the filter membrane, so that the airflow resistance is greatly reduced; the supporting plates which are arranged in a staggered mode are used for supporting the folding filter element, the service life of the folding filter element is prolonged, and the folding filter element can be used for a long time even under the condition that active humidification and ventilation are carried out.

Description

Novel high-efficient air filtration artificial nose

Technical Field

The invention relates to the technical field of medical and health biological protection, in particular to a novel efficient air filtering artificial nose for humidifying and filtering a mechanical ventilation pipeline.

Background

In the case of the COVID-19 epidemic situation of the novel coronavirus pneumonia which is outbreak at the end of 2019, mechanical ventilation is the most important supporting treatment means for severe patients. However, in the face of a large number of emergent severe infected patients, every patient who receives mechanical ventilation treatment can not enter a negative pressure isolation ward, and it is very important to prevent viruses from spreading to the air through a tracheal tube and a breathing machine in a general ward.

The artificial nose becomes an important tool for isolating virus from spreading out through a respiratory pipeline of a patient with viral pneumonia. Mainstream artificial nose uses polypropylene melt-blown non-woven fabrics as core filter material in the existing market, and this kind of material aperture is big, relies on static adsorption virus granule basically, and adopts the tiling mode to arrange, and the filter membrane area is little, and air resistance is big. Because the humidification of air to mucous membrane is very important for secretion discharge in the mechanical ventilation process of critically ill patients, the passive humidification effect of an artificial nose is limited, and an active fever reduction humidifier is often required. The polypropylene melt-blown non-woven fabric filter screen is under the condition of nearly saturated humidity airflow passing, and the static electricity of the filter screen is easily attenuated by the condensed water, so that the filter screen is difficult to play the original protection role. This disadvantage results in medical staff needing to frequently change the artificial nose (which needs to be changed once in 4-6 hours under the condition of active humidification and needs to be changed once in 1 day for passive humidification), but the artificial nose is equal to the breathing tube of an open infected person once every time of replacement, thereby increasing the risk of virus spreading to the air.

Disclosure of Invention

In order to solve the technical problems, the invention provides a novel efficient air filtering artificial nose which has high efficiency and lasting filtration and no need of humidification, and is used for epidemic prevention of high-infectivity viruses which are rapidly spread in respiratory tracts such as COVID-19, SARS, influenza A and the like.

The invention is realized by the following technical scheme: a novel efficient air filtering artificial nose comprises a sealing shell, wherein two ends of the sealing shell are respectively connected with a far-end interface and a near-end interface, and one side of the far-end interface is connected with a sampling hole and a plugging screw cap; a wet heat exchange filter element is arranged on one side, close to the near-end interface, in the sealing shell; a socket is arranged on the side surface of the sealing shell opposite to the damp and heat exchange filter element, and the damp and heat exchange filter element is inserted into the sealing shell from the socket; a cover plate is hinged to the outer side of the socket; the inner side surface of the cover plate is provided with a trapezoidal rubber block matched with the socket; the trapezoidal rubber block is inserted into the socket in a matching way, and the connection part of the periphery of the trapezoidal rubber block and the socket is an inclined plane; a bottom plate is fixed on one side of the sealing shell close to the far-end interface, bottom supporting plates are uniformly arranged on the bottom plate, and through holes are uniformly distributed on the bottom plate and the bottom supporting plates; a top plate is arranged on one side, close to the wet heat exchange filter element, in the sealing shell, top supporting plates are fixed on the top plate, and through holes are uniformly distributed on the top plate and the top supporting plates; the bottom supporting plates and the top supporting plates are uniformly arranged in a staggered manner, the folding filter elements are arranged between the bottom supporting plates and the top supporting plates, and the bottom supporting plates and the top supporting plates are inserted into the bends of the folding filter elements in a staggered manner;

the folding filter element comprises a PTEE microporous membrane, and spun-bonded non-woven fabrics are attached to two sides of the PTEE microporous membrane.

It further comprises the following steps: the inner wall of the sealed shell is fixed with a blocking platform, the top plate is arranged on the blocking platform in an overlapping mode, and the end portion of the top plate is fixed with the blocking platform through a connecting screw.

One end of the cover plate is hinged with the sealing shell through a hinge, and the other end of the cover plate is fixed with the sealing shell through a fastening screw.

The wet heat exchange cartridge comprises a hydrophobic paper that is repeatedly folded.

This novel high-efficient filtration artificial nose can provide effectual respiratory protection for the patient that mechanically ventilates, and better avoiding breathing machine, anesthesia machine are polluted by respiratory infection patient simultaneously. Compared with the prior art, the invention has the beneficial effects that:

the folding filter element adopts a PTEF microporous membrane, does not depend on static electricity, can realize long-time mechanical filtration of virus and other polluted particles, and the folded angle design of the PTFE microporous membrane enlarges the surface area of the filter membrane, greatly reduces the airflow resistance and improves the applicability of the PTEE microporous membrane;

2, the filter element designed with a large folding angle is easy to collapse due to condensed water, so that the surface area of the filter membrane is reduced, and the air resistance is improved; the scheme adopts the supporting plates which are arranged in a staggered mode to provide support for the folding filter element, so that on one hand, the shape of the folding filter element can be kept, and the folding filter element can work for a long time; on the other hand, the supporting plate can be used for condensing the condensed water to enable the condensed water to flow down, so that the water absorption capacity of the folding filter element is reduced and the service life of the folding filter element is prolonged under a stable working state; therefore, the air conditioner can be used for a long time even under the condition of active humidification and ventilation;

3, the moisture-heat exchange filter element has the capacity of reserving 70% of the temperature and humidity of the respiratory tract and is used for the disease condition needing moisture preservation; the wet heat exchange filter core adopts and takes out fast to insert mounting structure, can select the installation to the in service behavior of difference, improves the adaptation state of the illness ability of artifical nose.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of a pleated filter element according to an embodiment of the invention;

in the figure: 1. a remote interface; 2. sealing the housing; 2-1, inserting a socket; 2-2, a gear table; 3. a proximal interface; 4. a heat and moisture exchange cartridge; 5. a sampling hole and a blocking nut; 6. a base plate; 7. a bottom bracing plate; 8. a top plate; 9. a top bracing plate; 10. folding the filter element; 10-1, a PTEE microporous membrane; 10-2, spun-bonded non-woven fabric; 11. a cover plate; 11-1, trapezoidal rubber blocks; 12. a connecting screw; 13. a hinge; 14. and (5) fastening the screw.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

As shown in the combined drawings 1 and 2, the novel efficient air filtering artificial nose comprises a sealing shell 2, wherein two ends of the sealing shell 2 are respectively connected with a far-end interface 1 and a near-end interface 3, and one side of the far-end interface 1 is connected with a sampling hole and a blocking screw cap 5.

The improvement of the embodiment is that:

one side of the sealing shell 2 close to the near-end interface 3 is provided with a damp-heat exchange filter element 4, and the damp-heat exchange filter element 4 comprises hydrophobic paper which is repeatedly folded. A socket 2-1 is arranged on the side surface of the sealing shell 2 opposite to the wet heat exchange filter element 4, and the wet heat exchange filter element 4 is inserted into the sealing shell 2 from the socket 2-1. The outer side of the socket 2-1 is hinged with a cover plate 11 through a hinge 13, and the inner side surface of the cover plate 11 is provided with a trapezoidal rubber block 11-1 matched with the socket 2-1. The trapezoidal rubber block 11-1 is inserted into the socket 2-1 in a matching way, and the joint of the periphery of the trapezoidal rubber block 11-1 and the socket 2-1 is an inclined plane; the original end of the cover plate 11 is fixed with the sealing shell 2 through a fastening screw 14; after the trapezoidal rubber block 11-1 is pressed, the periphery deforms to a certain extent, so that the sealing effect is achieved. The damp heat exchange filter element has the capacity of reserving 70% of the temperature and humidity of the respiratory tract and is used for the condition needing moisture preservation. The wet heat exchange filter core adopts and takes out fast to insert mounting structure, can select the installation to the in service behavior of difference, has improved the adaptation state of the illness ability of artificial nose.

One side that is close to distal end interface 1 in sealed housing 2 is fixed with bottom plate 6, is fixed with align to grid on the bottom plate 6 and has bottom fagging 7, opens the through-hole that has the equipartition on bottom plate 6, the bottom fagging 7. The inner wall of the sealed shell 2 is fixed with a baffle 2-2, a top plate 8 is erected on the baffle 2-2, and the end part of the top plate 8 is fixed with the baffle 2-2 through a connecting screw 12. Top bracing plates 9 are fixed on the top plate 8 and uniformly arranged, and through holes are uniformly distributed on the top plate 8 and the top bracing plates 9. Bottom fagging 7, top fagging 9 are evenly crisscross to be arranged, install folding filter core 10 between bottom fagging 7, top fagging 9, and bottom fagging 7, top fagging are crisscross to be inserted in folding filter core 10's the buckling.

Because the filter core designed by the large folding angle is easy to collapse due to condensed water, the surface area of the filter membrane is reduced, and the air resistance is improved. Therefore, in the embodiment, the support plates which are arranged in a staggered manner are adopted to provide support for the folding filter element, so that on one hand, the shape of the folding filter element can be kept, and the folding filter element can work for a long time; on the other hand, the supporting plate can be used for condensing the condensed water to enable the condensed water to flow down, so that the water absorption capacity of the folding filter element is reduced and the service life of the folding filter element is prolonged under a stable working state; therefore, the air conditioner can be used for a long time even under the condition of active humidification and ventilation.

Further, the folding filter element 10 comprises a PTEE microporous membrane 10-1, and spun-bonded non-woven fabrics 10-2 are attached to two sides of the PTEE microporous membrane 10-1. The folding filter element adopts the PTEF microporous membrane, does not depend on static electricity, can realize long-time mechanical filtration of virus and other polluted particles, and the folded angle design of the PTFE microporous membrane enlarges the surface area of the filter membrane, greatly reduces the airflow resistance and improves the applicability of the PTEE microporous membrane.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A novel high-efficiency air filtering artificial nose comprises a sealing shell (2), wherein two ends of the sealing shell (2) are respectively connected with a far-end interface (1) and a near-end interface (3), and one side of the far-end interface (1) is connected with a sampling hole and a blocking screw cap (5);

the method is characterized in that:

a damp-heat exchange filter element (4) is arranged on one side, close to the near-end interface (3), in the sealing shell (2); a socket (2-1) is arranged at the side surface of the sealing shell (2) opposite to the damp and hot exchange filter element (4), and the damp and hot exchange filter element (4) is inserted into the sealing shell (2) from the socket (2-1); a cover plate (11) is hinged to the outer side of the socket (2-1); the inner side surface of the cover plate (11) is provided with a trapezoidal rubber block (11-1) matched with the socket (2-1); the trapezoidal rubber block (11-1) is inserted into the socket (2-1) in a matching way, and the joint of the periphery of the trapezoidal rubber block (11-1) and the socket (2-1) is an inclined plane;

a bottom plate (6) is fixed on one side of the sealing shell (2) close to the far-end connector (1), bottom supporting plates (7) are uniformly arranged on the bottom plate (6), and through holes are uniformly distributed on the bottom plate (6) and the bottom supporting plates (7); a top plate (8) is arranged on one side, close to the damp and hot exchange filter element (4), in the sealing shell (2), top supporting plates (9) are fixed on the top plate (8) in uniform arrangement, and through holes are uniformly distributed in the top plate (8) and the top supporting plates (9); the bottom supporting plates (7) and the top supporting plates (9) are uniformly arranged in a staggered manner, the folding filter elements (10) are arranged between the bottom supporting plates (7) and the top supporting plates (9), and the bottom supporting plates (7) and the top supporting plates (9) are inserted into the bends of the folding filter elements (10) in a staggered manner;

the folding filter element (10) comprises a PTEE microporous membrane (10-1), and spun-bonded non-woven fabrics (10-2) are attached to two sides of the PTEE microporous membrane (10-1).

2. The new high efficiency air filtration artificial nose according to claim 1, characterized in that: the inner wall of the sealing shell (2) is fixed with a blocking platform (2-2), the top plate (8) is erected on the blocking platform (2-2), and the end part of the top plate (8) is fixed with the blocking platform (2-2) through a connecting screw (12).

3. The new high efficiency air filtration artificial nose according to claim 1, characterized in that: one end of the cover plate (11) is hinged with the sealing shell (2) through a hinge (13), and the other end of the cover plate (11) is fixed with the sealing shell (2) through a fastening screw (14).

4. The new high efficiency air filtration artificial nose according to claim 1, characterized in that: the wet heat exchange filter element (4) comprises hydrophobic paper which is repeatedly folded.