CN115089752A - Plasma disinfection device, medical transfer bed and positive and negative pressure isolation and conversion method - Google Patents
Plasma disinfection device, medical transfer bed and positive and negative pressure isolation and conversion method Download PDFInfo
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- CN115089752A CN115089752A CN202210596668.1A CN202210596668A CN115089752A CN 115089752 A CN115089752 A CN 115089752A CN 202210596668 A CN202210596668 A CN 202210596668A CN 115089752 A CN115089752 A CN 115089752A
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- 238000002955 isolation Methods 0.000 title claims abstract description 52
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 50
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000001954 sterilising effect Effects 0.000 claims abstract description 9
- 238000007872 degassing Methods 0.000 claims description 5
- 239000000645 desinfectant Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000009194 climbing Effects 0.000 claims 2
- 230000000249 desinfective effect Effects 0.000 claims 2
- 241000700605 Viruses Species 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/22—Ionisation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G1/00—Stretchers
- A61G1/02—Stretchers with wheels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G1/00—Stretchers
- A61G1/04—Parts, details or accessories, e.g. head-, foot-, or like rests specially adapted for stretchers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G10/00—Treatment rooms or enclosures for medical purposes
- A61G10/005—Isolators, i.e. enclosures generally comprising flexible walls for maintaining a germ-free environment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G10/00—Treatment rooms or enclosures for medical purposes
- A61G10/02—Treatment rooms or enclosures for medical purposes with artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms
- A61G10/023—Rooms for the treatment of patients at over- or under-pressure or at a variable pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
- A61L2209/14—Filtering means
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Pulmonology (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention discloses a plasma disinfection device for a medical transfer bed, which relates to the field of medical equipment and comprises an air inlet, a primary filter, a fan, a plasma disinfection unit, activated carbon, a high-efficiency filter and an air outlet, wherein when the plasma disinfection device for the medical transfer bed works in a positive pressure isolation mode, airflow sequentially comprises the air inlet, the primary filter, the fan, the plasma disinfection unit, the activated carbon, the high-efficiency filter and the air outlet; when the plasma disinfection device for the medical transfer bed works in a negative pressure isolation mode, the air flow sequentially comprises an air inlet, a high-efficiency filter, a fan, a plasma disinfection unit, activated carbon, a primary filter and an air outlet. The plasma disinfection device for the medical transfer bed can realize the conversion from positive pressure isolation to negative pressure isolation, or the conversion from negative pressure isolation to positive pressure isolation, and the corresponding disinfection and sterilization work after the conversion.
Description
Technical Field
The application relates to the field of medical equipment, in particular to a plasma disinfection device for a medical transfer bed and a positive-negative pressure isolation conversion method.
Background
In the prior medical practice, for the infected patients such as new crown, etc., the transfer needs negative pressure isolation to prevent various viruses carried by the patients from spreading to the outside of the isolation device, and for the patients with low immunity, the transfer needs positive pressure isolation to prevent various virus microorganisms outside the isolation device from entering the isolation device.
Although the transfer bed in the prior art has a simple positive pressure isolation or negative pressure isolation function, in the daily management work of a large hospital, if the transfer bed cannot rapidly perform positive and negative pressure conversion and corresponding disinfection treatment when the number of the transfer beds is limited and the transfer requirement is large, the transfer bed becomes a bottleneck in hospital operation management.
Therefore, the technical personnel in the field are dedicated to develop a plasma disinfection device for a medical transport bed, which can realize the mutual conversion of positive pressure isolation and negative pressure isolation on the basis of blocking a virus propagation path and ensuring an efficient isolation effect, thereby bringing economy and convenience to the operation and management of medical institutions.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to realize the conversion from positive pressure isolation to negative pressure isolation, or from negative pressure isolation to positive pressure isolation, and the corresponding sterilization after conversion.
In order to achieve the purpose, the invention provides a plasma disinfection device which comprises an air inlet, a primary filter, a fan, a plasma generator, a high-efficiency filter and an air outlet, wherein when the plasma disinfection device for the medical transport bed works in a positive pressure isolation mode, airflow sequentially comprises the air inlet, the primary filter, the fan, a plasma disinfection unit, activated carbon, the high-efficiency filter and the air outlet; when plasma degassing unit for the medical treatment transportation bed work is when keeping apart the mode at the negative pressure, the air current order is air intake, high efficiency filter, fan, plasma disinfection unit, active carbon, primary filter and air outlet in proper order.
Furthermore, the air outlet is connected with a plurality of spring tubes, and the spring tubes are used for supporting the pressure difference between the inside and the outside of the spring tubes.
Further, the primary filter comprises activated carbon.
Further, the spring tube is also used for heating or cooling air flowing through the tube.
Further, the plasma disinfection unit comprises a discharge needle and a plasma generation tube, the discharge needle is placed in the center of the interior of the plasma generation tube, and the distance from the discharge end point of the discharge needle to any point on the edge of the plasma generation tube is the same; the discharge needle is configured to be at a high potential, and the plasma generating barrel is configured to be at a low potential.
Further, two sides of the high-efficiency filter are provided with differential pressure sensors.
The invention also provides a medical transfer bed, which comprises the plasma disinfection device, and further comprises a bed body, a shielding cabin and a chassis, wherein a jacking mechanism is arranged between the chassis and the bed body and used for adjusting the distance between the bed body and the chassis, the plasma disinfection device is fixedly arranged below the bed body, and an air inlet of the plasma disinfection device is parallel to the ground.
The invention also provides a conversion method for converting positive pressure isolation into negative pressure isolation for the medical transfer bed, which comprises the following steps:
providing a medical transfer bed of claim 7;
observing or recording the differential pressure sensor value;
stopping the fan from operating;
if the value of the differential pressure sensor exceeds a threshold value, replacing the high-efficiency filter;
exchanging the positions of the primary filter and the high-efficiency filter;
and re-opening the fan and reversing the rotation direction of the fan blades.
The invention also provides a conversion method for converting negative pressure isolation into positive pressure isolation for the medical transfer bed, which comprises the following steps:
providing a medical transfer bed as defined in claim 7;
observing or recording the differential pressure sensor value;
stopping the fan from operating;
if the value of the differential pressure sensor exceeds a threshold value, replacing the high-efficiency filter;
exchanging the positions of the primary filter and the high-efficiency filter;
the fan is turned on again and the rotation direction of the fan blades is reversed;
and spraying a liquid disinfectant into the shielding chamber.
The invention also provides a positive and negative pressure isolation bidirectional conversion method for the medical transfer bed, which comprises the following steps:
providing a medical transfer bed as defined in claim 7;
stopping the fan from operating;
reversing the plasma sterilizing device as a whole;
turning on the fan again;
and spraying a liquid disinfectant into the shielding chamber.
The plasma disinfection device for the medical transfer bed can realize the conversion from positive pressure isolation to negative pressure isolation, or the conversion from negative pressure isolation to positive pressure isolation, and the corresponding disinfection and sterilization work after the conversion.
Drawings
FIG. 1 is a schematic external view of a plasma sterilizer for a medical transfer bed according to the present invention;
FIG. 2 is one of schematic internal structural views of a plasma sterilizer for a medical transport bed according to the present invention;
FIG. 3 is a second schematic view of the internal structure of the plasma sterilizer for a medical transport bed according to the present invention;
FIG. 4 is a third schematic view of the internal structure of the plasma sterilizer for medical transfer beds according to the present invention;
FIG. 5 is a schematic view of a positive pressure isolation structure of the plasma disinfection device for a medical transport bed according to the present invention;
fig. 6 is a schematic view of a negative pressure isolation structure of the plasma disinfection device for the medical transport bed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, fig. 2, fig. 3, and fig. 4, the plasma disinfection apparatus for a medical transport bed according to the present embodiment includes an air outlet, a primary filter (containing activated carbon), a blower, a plasma generator, a high-efficiency filter, a high-voltage module connected to the plasma generator, a differential pressure sensor connected to the high-efficiency filter, and a human-machine interface module, wherein the high-voltage module is configured to generate a high voltage in a plasma state, the differential pressure sensor is configured to detect a pressure difference between two sides of the high-efficiency filter, and the human-machine interface module is a touch display screen configured to display a working state of the apparatus according to the present embodiment and receive a user command.
As shown in fig. 5, when the plasma disinfection device for medical transport bed described in this embodiment works in the positive pressure isolation mode, along with the start of the fan in the plasma disinfection device, the air flow passes through the air inlet, first passes through the primary filter (containing activated carbon), then passes through the fan blade, is disinfected through the plasma generator, and finally passes through the high efficiency filter, clean air flow enters the isolation cabin or the shielding cabin of the transport bed from the air outlet.
As shown in fig. 6, when the plasma disinfection device for a medical transport bed described in this embodiment works in a negative pressure isolation mode, as a fan in the plasma disinfection device is started, an air flow passes through an air inlet, first passes through a high efficiency filter, then passes through a blade of the fan, then enters a plasma generator for disinfection, and finally passes through a primary filter (containing activated carbon), and then a clean air flow enters an indoor public space outside the transport bed from an air outlet.
Through the air current contrast to malleation isolation mode and negative pressure isolation mode can discover, when this embodiment medical treatment is transported plasma degassing unit for bed and need carry on when keeping apart the mode from malleation to negative pressure, only need to exchange the position of primary filter and high efficiency filter and can with the reversal of fan direction of rotation, when keeping apart the mode from negative pressure to malleation, also only need exchange the position of primary filter and high efficiency filter and can with the reversal of fan direction of rotation, but because under the negative pressure isolation mode, the air in the shielding cabin is polluted, consequently need thoroughly to kill to shielding cabin inside after the conversion. The preferred disinfection method comprises spraying disinfectant, such as hydrogen peroxide or hypochlorous acid solution.
In another embodiment of the invention, if the operation from the positive pressure isolation mode to the negative pressure isolation mode or from the negative pressure isolation mode to the positive pressure isolation mode is required, the whole medical transport bed can be separated from the transport bed by using the plasma disinfection device, and the whole transport bed is connected with the transport bed after being turned over, so that the rotation direction of the fan blade does not need to be turned over, and the workload of the whole disassembly and assembly is far less than that of the exchange of the primary filter and the high-efficiency filter.
When carrying out positive pressure isolation or negative pressure isolation alone for a long time, set up gas pressure sensor in high efficiency filter's both sides, when the pressure differential of high efficiency filter both sides exceeded the default, can judge that high efficiency filter has become invalid, must maintain and change.
In the embodiment, the plasma disinfection unit comprises a discharge needle and a plasma generation tube, the discharge needle is arranged in the center of the inside of the plasma generation tube, and the distance from the discharge end point of the discharge needle to any point on the edge of the plasma generation tube is the same; the discharge needle is configured to be at a high potential, and the plasma generating barrel is configured to be at a low potential. When the plasma disinfection unit works, the end point of the discharge needle emits high-voltage electricity, so that air in the plasma generating cylinder is ionized to generate plasma, and the plasma has high killing power on pathogenic microorganisms in the surrounding air.
The air outlet of the plasma disinfection device for the medical transfer bed further comprises a plurality of spring pipes communicated to the shield compartment of the transfer bed, springs in the spring pipes can bear/resist the air pressure difference between the inside and the outside of the pipes and can also be used as heat conduction media, heating and cooling of air in the pipes can be achieved through heating or cooling of the springs, accordingly, the temperature change of the air entering the shield compartment of the transfer bed can be stably controlled, and the living comfort level of a patient in the shield compartment is improved.
The air outlet of the plasma disinfection device for the medical transfer bed adopts the inclined plane design, when the air flow comes out from the primary filter or the high-efficiency filter, the air passage shape is changed into a circle from the square, and the changed 90-degree direction adopts the inclined plane to connect the shape change and the direction change of the transition air passage, so that the noise of the plasma disinfection device during work is greatly reduced, and particularly when the air volume of the fan is large.
The air inlet of the plasma disinfection device for the medical transfer bed adopts a steering design, and is changed from being vertical to the ground to being parallel to the ground, so that particles scattered on the ground and virus microorganisms adhered to the particles can be prevented from entering the air inlet. In order to further increase the distance between the air inlet and the ground, the plasma disinfection device for the medical transport bed is integrally fixed on the bed body and can be lifted along with the lifting of the bed body. When the bed body rises, the air inlet can be further far away from the ground, and the effect of avoiding sucking foreign matters is improved. Similarly, in the negative pressure mode, the turning design and the lifting design can also improve the airflow direction of the air outlet, so that dust is prevented from flying.
It should be understood that the technical solutions and concepts of the present invention may be equally replaced or changed by those skilled in the art, and all such changes or substitutions should fall within the protection scope of the appended claims.
Claims (10)
1. A plasma disinfection device is characterized by comprising an air inlet, a primary filter, a fan, a plasma generator, a high-efficiency filter and an air outlet, wherein when the plasma disinfection device for the medical transfer bed works in a positive pressure isolation mode, airflow sequentially comprises the air inlet, the primary filter, the fan, a plasma disinfection unit, activated carbon, the high-efficiency filter and the air outlet; when the plasma disinfection device for the medical transfer bed works in a negative pressure isolation mode, the air flow sequentially comprises an air inlet, a high-efficiency filter, a fan, a plasma disinfection unit, activated carbon, a primary filter and an air outlet.
2. The plasma disinfecting device of claim 1, wherein the air outlet is connected to a plurality of spring tubes for supporting a pressure difference inside and outside the spring tubes.
3. The plasma disinfecting device of claim 2, wherein the primary filter comprises activated carbon.
4. The plasma sterilization device of claim 2, wherein said spring tube is further adapted to heat or cool air flowing through the tube.
5. The plasma sterilizing apparatus as claimed in claim 1, wherein the plasma sterilizing unit comprises a discharge needle and a plasma generating drum, the discharge needle being disposed at a central position inside the plasma generating drum, a discharge end point of the discharge needle being spaced the same distance from any point on an edge of the plasma generating drum; the discharge needle is configured to be at a high potential, and the plasma generating barrel is configured to be at a low potential.
6. The plasma sterilization apparatus of claim 1, wherein a differential pressure sensor is provided at both sides of the high efficiency filter.
7. A medical transport bed, contains plasma degassing unit of any one of claims 1-6, characterized in that, medical transport bed still includes the bed body, shielding cabin and chassis, the chassis with set up climbing mechanism between the bed body, climbing mechanism is used for adjusting the bed body with the distance between the chassis, plasma degassing unit is fixed to be set up under the bed body, plasma degassing unit's air intake is on a parallel with ground.
8. A positive pressure isolation-to-negative pressure isolation conversion method for a medical transport bed is characterized by comprising the following steps of:
providing a medical transfer bed as defined in claim 7;
observing or recording the differential pressure sensor value;
stopping the fan from operating;
if the value of the differential pressure sensor exceeds a threshold value, replacing the high-efficiency filter;
exchanging the positions of the primary filter and the high-efficiency filter;
and re-opening the fan and reversing the rotation direction of the fan blades.
9. A conversion method from negative pressure isolation to positive pressure isolation for a medical transfer bed is characterized by comprising the following steps:
providing a medical transfer bed as defined in claim 7;
observing or recording the differential pressure sensor value;
stopping the fan from operating;
if the value of the differential pressure sensor exceeds a threshold value, replacing the high-efficiency filter;
exchanging the positions of the primary filter and the high-efficiency filter;
the fan is turned on again and the rotation direction of the fan blades is reversed;
and spraying a liquid disinfectant into the shielding chamber.
10. A positive and negative pressure isolated bidirectional conversion method for a medical transfer bed is characterized by comprising the following steps:
providing a medical transfer bed as defined in claim 7;
stopping the fan from operating;
reversing the plasma sterilizing device as a whole;
turning on the fan again;
and spraying a liquid disinfectant into the shielding chamber.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210596668.1A CN115089752A (en) | 2022-05-16 | 2022-05-16 | Plasma disinfection device, medical transfer bed and positive and negative pressure isolation and conversion method |
| PCT/CN2022/096509 WO2023221180A1 (en) | 2022-05-16 | 2022-06-01 | Multifunctional medical transport stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210596668.1A CN115089752A (en) | 2022-05-16 | 2022-05-16 | Plasma disinfection device, medical transfer bed and positive and negative pressure isolation and conversion method |
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| Publication Number | Publication Date |
|---|---|
| CN115089752A true CN115089752A (en) | 2022-09-23 |
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| CN202210596668.1A Pending CN115089752A (en) | 2022-05-16 | 2022-05-16 | Plasma disinfection device, medical transfer bed and positive and negative pressure isolation and conversion method |
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