KR102418454B1 - Wheelchair capable of forming negative pressure - Google Patents

Abstract

The present invention relates to a negative pressure wheelchair device composed of a wheelchair (100), a chamber frame (200), a chamber (300), and a negative pressure device (400). According to the present invention, when a door unit (320) constituting the chamber (300) is opened, as the inner surface of the door unit (320) is folded to come in contact with each other and rests on the upper surface of the chamber frame (200), direct contact with the inner surface of the door unit (320) where a contamination source is stained can be avoided. In that exposure of the inner surface of the door unit (320) to the outside can be minimized, nurses or paramedics transporting patients (people) can be safely protected from contamination.

Description

Negative pressure wheelchair device {Wheelchair capable of forming negative pressure}

The present invention relates to a negative pressure wheelchair device, and more particularly, it is possible to fold the door unit without direct contact with the door unit, so that nurses or paramedics can be safely protected from secondary infection, and the negative pressure space inside as well as the negative pressure device It relates to a negative pressure wheelchair device that can always maintain a comfortable negative pressure space by thoroughly sterilizing and sterilizing components such as filters and lines.

In recent years, threats to health due to biological or chemical contamination have been increasing in the past few years, and in particular, a new type of coronavirus (SARS-) Respiratory infections caused by CoV2) occurred.

This type of coronavirus infection-19 is transmitted when droplets (saliva) of an infected person penetrate the respiratory tract or the mucous membranes of the eyes, nose, and mouth.

When infected, after an incubation period of about 2 to 14 days (estimated), respiratory symptoms such as fever (37.5 degrees), cough or difficulty breathing, and pneumonia appear as the main symptoms, but asymptomatic infections are rare.

An isolation space or an independent space is provided to check whether the subject is infected with COVID-19, etc., and the subject moves to the space to collect the sample.

However, in the case of highly contagious infections, there is a possibility of transmission to others during the process of moving to the sample collection site. There is currently no means.

As a technology devised to solve this problem, there are Japanese Patent Publication No. 4381046, Japanese Patent Application Laid-Open No. 2012-110453, and Korean Patent Application Laid-Open No. 10-2022-0026817, which transports people with disabilities A technology is disclosed in which a chamber (negative pressure chamber) and a negative pressure device are grafted to a wheelchair.

In the prior art, after opening the door of the chamber, when an infectious disease patient (or suspect) boards a wheelchair, the door is closed to isolate it from the outside, and then transported, and upon arrival at a relevant facility such as a hospital, the door is opened Allow (or suspect) to get out of the wheelchair.

However, in the prior art, the door is cut in a 'C' shape, and if you want to completely open the door, you do not have to turn the door. If it is placed aside and placed on the side of the wheelchair, there is a risk of secondary infection by the pollution source as the inner surface of the door where the pollution source is buried is exposed as it is.

1. Republic of Korea Patent Publication No. 10-2022-0026817 2. Japanese Patent Publication No. 4381046 3. Japanese Patent Laid-Open No. 2012-110453

The present invention has been devised to solve the above problems, and it is possible to fold the contaminated inner surfaces of the door unit against each other without direct contact with the door unit, so that nurses or paramedics can be safely protected from secondary infection, and negative pressure The purpose of this is to provide a negative pressure wheelchair device that can keep the negative pressure space comfortable at all times by carefully sterilizing and sterilizing the inside of the space as well as the filters and lines of the negative pressure machine.

The present invention for achieving the above object,

bathchair; Chamber frame installed in a wheelchair; a chamber detachably bound to the chamber frame to provide a sealed negative pressure chamber to a person in a wheelchair and having an intake connection part communicating with the outside; An intake unit that is detachably interconnected via an intake line and an intake connection unit, a filter that purifies the air introduced into the intake unit, a fan that forcibly causes an airflow, and the air that has passed through the filter prevents the forced airflow of the fan. In the negative pressure wheelchair device consisting of;

In the chamber,

A U-shaped door part that can be opened and closed, a handle provided on the outer surface of the door part, and fixing means provided on the inner surface of the door part are further reinforced,

When the door part is lifted by holding the handle, the inner surfaces of the door part are folded to face each other and fixed by a fixing means so that the inner surfaces of the door part are placed on the upper surface of the chamber while facing each other so as not to be exposed to the outside; characterized in that .

Here, the door part is further provided with an auxiliary member of a transparent, translucent or opaque material that is formed to be opposite to each other based on the virtual fold line, and the door part is made of a relatively flexible material compared to the auxiliary member; characterized in that do.

Here, the chamber frame is made to be folded or unfolded; characterized in that.

Also, in the present invention,

It is characterized in that the chamber is further provided with a glove port capable of inspecting and examining the condition of the occupant, and a tube coupling portion into which the Ringer tube is detachably fitted.

Also, in the present invention,

The chamber is further provided with an exhaust connection portion that communicates with the outside;

The negative pressure machine has a sterilization tank equipped with a radiation unit for sterilizing the air that has passed through the HEPA filter by emitting a sterilizing agent, and a control unit for controlling the on/off of the radiation unit through selective control of the negative pressure mode and the sterilization mode is further reinforced become;

The exhaust part is detachably connected to each other via an exhaust connection part and an exhaust line.

Also, in the present invention,

An electromagnetic or mechanical on/off valve for controlling the flow of air is further reinforced in the intake connection part;

The negative pressure wheelchair device, characterized in that the intake line is further provided with an auxiliary intake line through which external air can be introduced when the intake connection part is closed by the on/off valve.

Here, the mechanical on/off valve is

a gate rotatably installed in the intake connection part to close or open the inside of the intake connection part;

and a handle exposed to the outside of the intake connection part to rotate the gate.

Here, the control unit,

When the negative pressure mode is selected through the user's input unit operation, the fan is driven in the forward direction,

When the positive pressure mode is selected through the user's input unit operation, the fan is driven in the reverse direction,

When the user selects the sterilization mode through the operation of the input unit, driving the radiation unit while driving the fan in the forward direction; characterized in that.

Also, in the present invention,

In the negative pressure device,

and a UV lamp disposed between the intake portion and the exhaust portion to sterilize the air introduced into the intake portion, and a photocatalytic filter that removes harmful substances in response to the UV lamp is further reinforced; characterized in that.

Here, the spinning unit is an ultrasonic vibrator vibrating for vaporization of the sterilizing agent; characterized in that.

In addition, the present invention,

It is installed in the chamber and further comprises a human body detection sensor for detecting the presence of a human body;

The control unit limits the activation of the sterilization mode when a human body detection signal is input from the human body detection sensor.

Here, a pair of the photocatalytic filters are arranged in a line along the airflow of the air, and the UV lamp is arranged between the pair of photocatalytic filters.

Here, the photocatalytic filter has a cylindrical shape with the UV lamp as a central point;

According to the present invention, when the door part constituting the chamber is opened, the inner surface of the door part is folded to face each other and placed on the upper surface of the chamber frame, so that direct contact with the inner surface of the door part containing the contamination source can be avoided, and the inner surface of the door part is exposed to the outside. There is an advantage that can safely protect nurses or paramedics transporting patients (people) from secondary infection in that it can minimize exposure.

In addition, the present invention has the effect of being able to maintain the negative pressure space comfortably at all times by carefully sterilizing and sterilizing not only the inside of the negative pressure space but also the components such as filters and lines of the negative pressure machine.

In particular, it is possible to maximize the sterilization and sterilization effect by forming the inside of the chamber to be supersaturated by the vaporized sterilizing agent.

1 and 2 are a front perspective view and a rear perspective view showing an embodiment of a negative pressure wheelchair device according to the present invention.
Fig. 3 is a front view of Fig. 1;
Fig. 4 is a right side view of Fig. 1;
5 is a block diagram showing the configuration of the negative pressure device and the flow of air in the negative pressure wheelchair device according to the present invention.
6 is a view showing a state in which a chamber and a negative pressure device are connected to form a negative pressure in the negative pressure wheelchair device according to the present invention.
7 is a view for explaining the effect of the door unit in the negative pressure wheelchair device according to the present invention.
8 is a rear perspective view schematically showing a state in which the chamber and the negative pressure device are interconnected for sterilization in the negative pressure wheelchair device according to the present invention.
9 is a block diagram schematically showing another configuration of the negative pressure device and the flow of air in the negative pressure wheelchair device according to the present invention.
10 is a cross-sectional view schematically showing the internal structure of the negative pressure device in the negative pressure wheelchair device according to the present invention.
11 is a diagram schematically illustrating an embodiment of an input unit and an output unit of a negative pressure device in the negative pressure wheelchair device according to the present invention.
12 is an enlarged view of “A” of FIG.

Hereinafter, it will be described in detail based on the accompanying drawings.

1 and 2 are a front perspective view and a rear perspective view showing an embodiment of a negative pressure wheelchair device according to the present invention, FIG. 3 is a front view of FIG. 1, FIG. 4 is a right side view of FIG. 1, and FIG. 5 is the view It is a block diagram showing the configuration of the negative pressure device and the flow of air in the negative pressure wheelchair device according to the present invention. 7 is a view for explaining the effect of the door unit in the negative pressure wheelchair device according to the present invention.

1 to 7, the negative pressure wheelchair device of the present invention according to an embodiment is composed of a wheelchair 100, a chamber frame 200, a chamber 300, and a negative pressure device 400, according to which the infectious disease A patient or a person suspected of an infectious disease can be safely transported in isolation from the outside.

In addition, when the door part 320 constituting the chamber 300 is opened, the inner surfaces of the door part 320 are folded to face each other and are placed on the upper surface of the chamber frame 200, so the door part 320 containing the contamination source. ) In that direct contact with the inner surface can be avoided and exposure of the inner surface of the door unit 320 to the outside can be minimized, nurses or paramedics transporting patients (persons) can be safely protected from secondary infection. have.

1 to 4, the wheelchair 100, as is known, refers to a chair equipped with wheels so that a person with weak legs or a person with a physical disability can move while sitting.

As an example, the wheelchair 100 includes a folding wheelchair and a stationary wheelchair, and although a stationary wheelchair is applied in the present embodiment, a folding wheelchair may be applied if necessary.

As such, the wheelchair 100 is a well-known technology in the relevant field, further detailed description will be omitted.

1 to 4 , the chamber frame 200 is a frame installed in the wheelchair 100 to support the shape of the chamber 300 to be maintained.

The shape of the chamber frame 200 can be variously modified, and in this embodiment, a frame having an arch shape is applied.

For example, the chamber frame 200 may be integrally formed with the wheelchair 100 , or may be detachably installed on the wheelchair 100 .

In addition, the chamber frame 200 may be manufactured in a structure that can be folded or unfolded together with the wheelchair 100 in a state integrally formed with the wheelchair 100 (Japanese Patent Application Laid-Open No. 2012-110453), and the wheelchair 100 ) and can be manufactured in a structure that can be folded or unfolded so that it can be stored separately.

If the chamber frame 200 is manufactured in a structure that can be folded or unfolded as described above, the overall size can be reduced to a compact size, which is very advantageous when loading or storing a vehicle.

Since the chamber frame 200 is a well-known technology in the relevant field, a detailed description thereof will be omitted.

1 to 4, the chamber 300 is made of a transparent/translucent/opaque flexible material, and in this embodiment, a coupling member (F; Velcro tape, hook-type clip, etc.) to the chamber frame 200 It is detachably bound through the medium to provide a sealed negative pressure chamber to a person riding in the wheelchair 100 .

On the rear surface of the chamber 300 , an intake connection part 311 connected to the intake part 411 of the negative pressure device 400 and the intake line IL as a medium is formed.

In addition, the front side of the chamber 300 is cut in a U-shape, the door unit 320 that can be opened and closed by pushing and pulling of the zipper (Z) installed in the cut-out portion is formed.

In addition, a handle 330 for lifting the door unit 320 is installed at the lower end of the outer surface of the door unit 320 , and the folded state of the door unit 320 is maintained at the upper and lower inner surfaces of the door unit 320 . Fixing means 340 for doing so are respectively formed.

Here, the fixing means 340 is a magnet, Velcro tape, etc., in addition, various known members may be applied.

For example, while the door part 320 is folded (bending) based on a virtual folding line (BL: see FIG. 3) in the process of being lifted by the handle 330, the inner surfaces of the door part 320 are mutually The butt, and this abutted state is maintained by the mutual coupling of the fixing means (340).

In addition, a pre-filter 360 is provided in the chamber 300, where the pre-filter 360 serves to purify the air flowing into the interior from the outside, and if necessary, only a hole instead of the pre-filter 360 It may be formed, or it may have a structure in which the hole formed in this way and the pre-filter 360 are installed together.

In addition, a high-brightness reflector or the like may be installed on the outer surface of the chamber 300 .

On the other hand, the chamber 300 is further provided with a reinforced glove port 380 through which a medical staff, etc. can inspect and examine the condition of the occupant while the occupant of the wheelchair rides the wheelchair and is isolated from the outside.

The glove port 380 is mounted in a through hole formed in the chamber 300 , and includes a glove frame 381 , a glove 382 , and a fixing part.

In this embodiment, the glove frame 381 is mounted on a through hole formed in the outer surface (front, rear, left, and right surfaces of the chamber 300, in this embodiment, the side surface), and the through hole and the glove frame ( 381) is provided in a pair of circles, but is not necessarily limited thereto.

In addition, the glove frame 381 may be formed on both sides of the chamber 300 to be used by two or more medical staff, and the formation position is not limited.

A glove 382 made of vinyl or silicone is mounted on the ring-type glove frame 381 .

The glove 382 is mounted on the glove frame 381 in a folded or rolled state, and maintains the folded or rolled state through a predetermined fixing part.

For example, when a medical staff puts their hand into each glove 382 and stretches their arm for an examination such as sample collection, the fixing part is released and the folded or rolled glove 382 is unfolded, and the medical staff is equipped with a diagnostic kit mounted on a wheelchair Inspection can be carried out through

That is, since the medical staff can conduct the examination without contacting the wheelchair occupant through the glove 382 mounted in the chamber 300, the medical staff can be protected from secondary infection.

On the other hand, on the outer surface (front, rear, left, and right surfaces, in this embodiment) of the chamber 300, a tube coupling part 390 capable of inserting a Ringer tube into the chamber 300. is prepared

Here, the tube coupling part 390 is a rubber plate (membrane) formed with a hole having a relatively smaller diameter than that of the tube. 390) and detained.

On the other hand, the auxiliary member 350 was reinforced to face each other based on the virtual folding line BL of the door part 320 .

Here, the auxiliary member 350 is made of a flexible material of a transparent or translucent or opaque material, and the door unit 320 is relatively more flexible than the auxiliary member 350 .

Therefore, when the door part 320 is lifted through the handle 330 , the inner surfaces of the door part 320 are naturally folded based on the virtual folding line BL in the process of lifting the door part 320 and face each other. It is possible to minimize the exposure of the inner surface of the door unit 320 where the contamination source is buried.

Referring to FIGS. 2 and 5 , the negative pressure device 400 is portable and, in the present embodiment, is detachably installed on the wheelchair 100 to maintain the inside of the chamber at a lower negative pressure than the outside.

The negative pressure device 400 has a box shape in appearance, and the shape may be modified as needed.

An intake portion 411 and an exhaust portion 412 communicating with the interior are provided on one surface of the negative pressure device 400, respectively. Air is introduced through the intake portion 411, and air is introduced through the exhaust portion 412. Air is exhausted to the outside.

And the intake part 411 is removably interconnected via the intake connection part 311 and the intake line IL, and accordingly, the internal air of the chamber 300 can be introduced into the intake part 411. .

Subsequently, a filter 440 (hereinafter referred to as a HEPA filter), a fan 460 and a battery P are installed inside the negative pressure device 400, respectively, where the HEPA filter 440 includes the intake part 411. The fan 460 serves to purify the air introduced into the interior through the fan 460 and forcibly exhausts the purified air that has passed through the HEPA filter 440 to the exhaust unit 412 by forcibly generating an airflow, and the battery (P) serves to supply power to the fan 460 . For reference, the battery P is a normal rechargeable battery, and the filter 440 may include a pre-filter instead of a HEPA filter.

On the other hand, the fan 460 may be rotatable in the forward and reverse directions. According to this, when the fan 460 rotates in the forward direction, the contaminants in the chamber 300 are not discharged out of the chamber 300 in a negative pressure state. When the fan 460 rotates in the reverse direction, the inside of the chamber 300 is made in a positive pressure state so that a contaminant outside the chamber 300 does not flow into the inside of the chamber 300 .

6 is a view showing a state in which a chamber and a negative pressure device are connected to form a negative pressure in the negative pressure wheelchair device according to the present invention, which will be described with reference to the following.

As shown in FIG. 6 , the intake connection part 311 of the chamber 300 and the intake part 411 of the negative pressure device 400 are interconnected via the intake line IL, and an infectious disease patient (or suspect) The inside and outside of the chamber 300 are sealed so as to be isolated from each other in a state in which they enter the inside of the chamber 300 .

Then, when the negative pressure device 400 is operated, the inside of the chamber 300 is gradually converted from the atmospheric pressure state to the negative pressure state by the fan 460, whereby the internal air of the chamber 300 is naturally supplied by the fan ( 460) and sequentially passes through the intake connection part 311, the intake line IL, and the intake part 411, and flows into the negative pressure device 400, and the air introduced in this way passes through the HEPA filter 440. During the process, pollutants are captured and purified.

And the purified air as described above is discharged to the outside through the exhaust unit 412 by the fan 460.

On the other hand, when the inside of the chamber 300 is converted to a negative pressure state, external air flows in through the pre-filter 360 installed in the chamber 300. Since pollutants are captured, it is possible to provide purified air to patients (or suspects) with infectious diseases.

According to this embodiment, it is possible to safely transport an infectious disease patient or a person suspected of an infectious disease in a state isolated from the outside.

7 is a view for explaining the effect of the door unit in the negative pressure wheelchair device according to the present invention, which will be described with reference to the following.

First, the zipper (Z: see FIG. 3) that closes the door part 320 is opened so that the door part 320 can be opened.

Then, when each handle 330 is held and the door unit 320 is lifted upward, the door unit 320 is folded (bending while being bent) based on a virtual folding line (BL: see FIG. 3). The inner surfaces of the 320 are abutted to each other, and are placed on the upper surface of the chamber frame 300 in such a butted state.

In addition, as the fixing means 340 are coupled to each other while the inner surfaces of the door part 320 are abutted to each other, it is possible to maintain the buttted state of the door part 320 .

As described above, in the present invention, when the door part 320 constituting the chamber 300 is opened, the inner surfaces of the door part 320 are folded to face each other and are placed on the upper surface of the chamber frame 200, so that the source of contamination is buried. In that the door part 320 can be walked on without direct contact with the door part 320 , it is possible to safely protect the nurses or paramedics from pollution sources.

In addition, since the inner surfaces of the door part 320 are kept facing each other, exposure of the inner surfaces to the outside can be minimized, thereby safely protecting the surroundings from contamination sources.

On the other hand, since the chamber 300 in which the infectious disease patient (or suspect) entered is contaminated by the contamination source, it is necessary to sterilize and sterilize the chamber 300 even for the next person.

However, it is not as easy to sterilize and sterilize the inside of the chamber 300 as you think, and when you directly wipe it, there is a significant risk of infection as it is exposed to contamination sources, and when the chamber 300 is used only once and discarded It is never desirable from an environmental point of view.

Therefore, in this embodiment, please note that the above problems are solved by reinforcing the technology for safely sterilizing and sterilizing the inside of the chamber 300 .

8 is a rear perspective view schematically illustrating a state in which a chamber and a negative pressure device are interconnected for sterilization and sterilization in the negative pressure wheelchair device according to the present invention, and FIG. 9 is another configuration of the negative pressure device in the negative pressure wheelchair device according to the present invention and It is a block diagram schematically showing the flow of air, and FIG. 10 is a cross-sectional view schematically showing the internal structure of the negative pressure device in the negative pressure wheelchair device according to the present invention, and FIG. 11 is the negative pressure device in the negative pressure wheelchair device according to the present invention. It is a diagram schematically showing an embodiment of an input unit and an output unit, and FIG. 12 is an enlarged view "A" of FIG. 8 .

As shown in FIG. 8 , the chamber 300 further includes an exhaust connection part 312 .

The exhaust connection part 312 is installed on the rear surface of the chamber 300 in which the intake connection part 311 is installed and communicates with the inside.

The exhaust connection part 312 installed in this way is interconnected through the exhaust part 412 and the exhaust line EL, and the air discharged from the exhaust part 412 passes through the exhaust line EL and the exhaust connection part 312 to the chamber. (300) is introduced into the interior.

The exhaust connection part 312 is normally closed by a stopper (not shown) in a state separated from the exhaust line (EL), and is connected to the exhaust line (EL) with the stopper (not shown) open during sterilization and sterilization. interconnected

Subsequently, with reference to FIGS. 9 to 11 , the negative pressure device 400 ′ for sterilizing and sterilizing the chamber 300 will be described as follows.

The negative pressure device 400 ′ includes an intake unit 411 , a HEPA filter 440 , a sterilization tank 450 , a fan 460 , an exhaust unit 412 , and a control unit 470 , and a user's control unit (470) It further includes an input unit 481 and an output unit 482 for operation.

As mentioned above, the intake part 411 is interconnected with the intake connection part 311 of the chamber 300 via the intake line IL, and the exhaust part 412 is the exhaust connection part of the chamber 300 ( 312) and the exhaust line EL are interconnected.

The HEPA filter 440 purifies the air introduced into the intake unit 411. As is known, the HEPA filter 440 is a high-performance filter capable of filtering most of the fine particles, and is generally 0.3 in the air. It is configured to filter 99.97% or more of ㎛ size particles.

The sterilization tank 450 includes a radiation unit 451 that radiates a sterilizing agent for sterilization of the air that has passed through the HEPA filter 440 .

It is preferable that the sterilization tank 450 has an expanded shape than the air pipe, and temporarily stores the air passing through the HEPA filter 440 to increase the sterilization efficiency of the air.

However, in addition, the sterilization tank 450 may be configured only as a space for simply vaporizing the sterilizing agent so that the sterilizing agent can be directly injected into the isolation space.

On the other hand, the sterilizing agent may be hydrogen peroxide, etc., which has sterilization and sterilization effect, and is filled in a separate cartridge (C) type that is detachable from the negative pressure device 400 ' so that it can be used only in the sterilization mode, and is detachable from the cartridge connection part 413. It is preferable to be installed as possible.

The radiation unit 451 installed in the sterilization tank 450 radiates a sterilizing agent to the sterilization tank 450 for sterilization of air, and for this, the radiation unit 451 vibrates to vaporize the liquid-type sterilizer. It may be an ultrasonic vibrator that

However, if it is a means for vaporizing the liquid sterilizing agent in addition to, it is not limited to a specific method.

The fan 460 forcibly causes an airflow in the negative pressure machine 400'. In this embodiment, the fan 460 is disposed between the sterilization tank 450 and the exhaust unit 412, but intake If it is possible to generate a forced air flow for discharging the air introduced into the unit 411 to the exhaust unit 412 through the HEPA filter 440 and the sterilization tank 450 , the fan 460 is the negative pressure device 400 ′. It is not limited to a specific location.

The exhaust unit 412 allows the air passing through the sterilization tank 450 to be exhausted along the forced airflow of the fan 460, and forms an open structure with the outside.

After all, the air of the negative pressure device 400 ′ is introduced into the intake unit 411 , and then is exhausted to the outside through the exhaust unit 412 via the HEPA filter 440 and the sterilization tank 450 , and through this The negative pressure space communicating with the intake unit 411 may maintain a negative pressure state.

The control unit 470 controls the on/off of the radiation unit 451 through selective control of the negative pressure mode, the positive pressure mode, and the sterilization mode.

In the negative pressure mode, the control unit 470 operates the negative pressure device 400 ′ to create a negative pressure state inside the chamber 300 , and the positive pressure mode is a control unit to create a positive pressure state inside the chamber 300 . 470 operates the negative pressure device 400 ′, and in the sterilization mode, the control unit 470 performs negative pressure to sterilize and sterilize the internal space of the chamber 300 and the components and pipes of the negative pressure device 400 ′. It is to operate the machine 400'.

To this end, the control unit 470 operates in a specified process according to the input value generated by the input unit 481 by the user's operation and operates the components, and the result value according to this operation is the output unit 482 Print it out so that the user can check it.

On the other hand, when the user operates the input unit 481 and selects the sterilization mode, the control unit 470 turns on the radiation unit 451 and the fan 460 .

On the other hand, when the user operates the input unit 182 to select the negative pressure mode, the control unit 470 turns off the radiation unit 451, and the fan 460 rotates in the forward direction (fan → exhaust). Operate ON as much as possible.

In addition, when the user operates the input unit 182 to select the positive pressure mode, the control unit 470 turns the radiation unit 451 off, and the fan 460 rotates in the reverse direction (fan → HEPA filter). Operate ON as much as possible.

The operating intensity of the fan 460 may vary according to a selection mode.

Meanwhile, the negative pressure device 400 ′ according to the present invention may further include a UV lamp 420 and photocatalytic filters 431 and 432 for sterilizing and sterilizing the air inside the chamber 300 .

The UV lamp 420 is disposed between the intake part 411 and the exhaust part 412 to sterilize the air introduced into the intake part 411 .

As is well known, the UV light irradiated by the UV lamp 420 not only has a special function for sterilization and sterilization, but also causes the photocatalytic filters 431 and 432 to express an air purification function.

The photocatalytic filters 431 and 432 perform harmful substances removal in response to the UV lamp 420, and the photocatalytic filters 431 and 432 may be manufactured by coating titanium oxide (TiO2) on the surface or by using titanium oxide itself. .

In this embodiment, a pair of photocatalytic filters 431 and 432 are arranged in a line along the air flow, and the UV lamp 420 is arranged between a pair of photocatalytic filters 431 and 432 .

Accordingly, the air introduced into the pair of photocatalytic filters 431 and 432 is effectively purified by the front and rear photocatalytic filters 431 and 432 as well as sterilized by the UV lamp 420 located in the center to increase the purification efficiency.

The photocatalytic filters 431 and 432 have a curved shape with the UV lamp 420 as the center, and in particular, the curved shape may be a cylindrical shape with the UV lamp 420 as a central point.

In this structure, since the photocatalytic filters 431 and 432 have a constant distance from the UV lamp 420 without any restrictions on their positions, the entire surface of the photocatalytic filters 431 and 432 receives the light of the UV lamps 420 uniformly without any restrictions on their positions. This results in a uniform purification function.

On the other hand, the pair of photocatalytic filters 431 and 432 in the shape of a curved surface has a structural feature that the linear distance between each other is the longest at the center.

Accordingly, the air passing through the pair of photocatalytic filters 431 and 432 has the longest moving distance in the central portion compared to the edge.

However, air has the characteristic of moving relatively quickly in the center of the tube rather than at the edges.

Therefore, the air that moves in the central part of the tube at a fast moving speed passes through the central part with a long distance between the pair of photocatalytic filters 431 and 432. have.

Meanwhile, the negative pressure device 400 ′ according to the present invention may be used as a mobile type using the battery P as a power source.

Referring to FIGS. 8 and 9 , the process of sterilizing and sterilizing the inside of the chamber 300 using the negative pressure device 400 ′ will be described in detail as follows.

8 and 9 , the intake portion 411 of the negative pressure device 400 ′ according to the present invention is connected in communication with the intake connection portion 311 of the chamber 300 via the intake line IL as a medium. and the exhaust part 412 is communicatively connected to the exhaust connection part 312 of the chamber 300 via the exhaust line EL.

As the connection is made as described above, the internal air of the chamber 300 is introduced into the negative pressure device 400 ′ and purified, and then reintroduced into the negative pressure space of the chamber 300 through the exhaust line EL.

As a result, through the above-described air circulation structure of the negative pressure space and the negative pressure device 400', the negative pressure space as well as the components of the negative pressure device 400' can be sterilized and sterilized.

9 and 11 , the negative pressure device 400 ′ according to the present invention is operated when the user operates the power switch of the input unit 481 .

Since the user is to start the negative pressure device 400 ′ in a state in which the power of the battery P is not applied to the control unit 470 and other components of the negative pressure device 400 ′, the power switch may be of an analog type. .

When the power switch is operated, the power of the battery P is applied to the control unit 470 as well as other designated components such as the fan 460 and the UV lamp 420 .

The control unit 470 is activated through application of power, and when the switch for mode selection is a digital type, the control unit 470 outputs a switch to the output unit 482 so that the user can select the mode.

When the user selects one of the negative pressure mode, the positive pressure mode, and the sterilization mode and operates the operation switch, the control unit 470 operates the corresponding component according to the process specified for each mode as described above.

Meanwhile, the negative pressure device 400 ′ further includes a human body sensor S for recognizing the presence of a patient in the chamber 300 .

Since the negative pressure device 400' according to the present invention has a function of the sterilization mode for sterilization and sterilization, when the patient is in the negative pressure space, the operation of the sterilization mode may be fatal to the patient.

Therefore, when the human body sensor (S) recognizes the presence of a patient in the sound pressure space, it transmits a signal to the control unit 470, and the control unit 470 limits the activation of the sterilization mode.

On the other hand, the negative pressure device 400' configures various types of sensors to check and alarm the surrounding environment of the negative pressure device 400' as well as the state of the components. First, the negative pressure device 400 ′ includes a pressure sensor that detects an internal air pressure of the chamber 300 and an external air pressure of the chamber 300 to check a differential pressure, respectively. Since the internal air pressure of the chamber 300 must be maintained lower than the external air pressure of the chamber 300, when the internal air pressure is confirmed to be higher than the external air pressure, the control unit 470 controls the output unit 482 so that the user can recognize it. to control the alarm. The output unit 482 may check the air pressure of the negative pressure space and the air pressure of the outside in real time and display the numerical values through the display.

On the other hand, the negative pressure device 400' includes a carbon dioxide sensor for sensing the amount of CO2 in the negative pressure space. Since the internal space of the chamber 300 isolates and protects the patient, the amount of internal CO2 is checked in real time so that the patient's breathing is not unreasonable, and the control unit 470 displays a numerical value through the display. If it is confirmed that the reference value is exceeded or less than the reference value, the control unit 470 controls the output unit 482 so that the user can recognize it and alarms.

On the other hand, it is very advantageous for sterilization and sterilization that the sterilant is sufficiently maintained in a supersaturated state inside the chamber 300 , and the supply of the sterilant into the chamber 300 and the discharge of air inside the chamber 300 are simultaneously performed. As it occurs, it is difficult to expect sufficient sterilization and sterilization.

Therefore, it should be noted that in this embodiment, the above-mentioned problems are solved by further reinforcing the on/off valve 370 and the auxiliary intake line SIL.

The opening/closing valve 370 is an electromagnetic or mechanical valve, and in this embodiment, is installed in the intake connection part 311 to control the flow of air.

In this embodiment, a mechanical on/off valve is applied instead of an electromagnetic on/off valve.

Referring to FIG. 12 , the mechanical on/off valve 370 includes a gate 371 and a handle 372 .

The gate 371 is manufactured to have the same shape as the internal cross-section of the intake connection part 311 , and is rotatably installed in the intake connection part 311 to close or open the inside of the intake connection part 311 .

The handle 372 is a handle that is exposed to the outside of the intake connection part 311 to rotate the gate 371 .

The auxiliary intake line (SIL) is formed in communication with the intake line (IL) so that when the intake connection part 311 is closed by the on/off valve 370, external air can be introduced into the negative pressure machine 400'. is dependent on

The auxiliary intake line (SIL) is normally blocked by a separate stopper (not shown), and when the stopper (not shown) is removed during sterilization and sterilization by the negative pressure device 400 ′, the air from the outside is subjected to negative pressure. It is introduced into the group 400'.

As an example, as shown in FIG. 8 , in a state in which the chamber 300 and the negative pressure device 400 ′ are interconnected, the intake connection part 311 is blocked by the on-off valve 370 , and the auxiliary intake line SIL ) is open to communicate with the outside.

Then, when the negative pressure device 400 ′ is operated, the vaporized sterilizing agent flows into the chamber 300 , while no air is discharged from the chamber 300 , so the inside of the chamber 300 flows in. Since the supersaturated state is achieved due to the sterilizing agent, it is possible to more effectively sterilize and sterilize every corner of the chamber 300 , thereby maximizing the sterilization and sterilization effect.

On the other hand, after a certain time has elapsed, the opening/closing valve 370 is opened so that the internal air of the chamber 300 can be introduced into the negative pressure device 400 ′, and the auxiliary intake line SIL is blocked with a stopper (not shown). give.

Although the present invention has been described in detail only with respect to the specific embodiments described, it is natural for those skilled in the art that various changes and modifications can be made within the technical spirit of the present invention, and it is natural that such variations and modifications belong to the appended claims.

100: wheelchair 200: chamber frame 300: chamber
311: intake connection part 312: exhaust connection part 320: door part
330: handle 340: fixing means 350: auxiliary member
360: pre-filter 370: on-off valve 371: gate
372: handle 380: glove port 381: glove frame
382: globe 390: tube coupling portion 400,400 ': negative pressure device
411: intake part 412: exhaust part 413: cartridge connection part
420: UV lamp 431,432: photocatalytic filter 440: HEPA filter
450: sterilization tank 451: ultrasonic vibrating unit 460: fan
470: control unit 481: input unit 482: output unit
IL: intake line SIL: auxiliary intake line EL: exhaust line
BL: virtual folding line F: coupling member P: battery

Claims (13)

bathchair; Chamber frame installed in a wheelchair; a chamber detachably bound to the chamber frame to provide a sealed negative pressure chamber to a person in a wheelchair and having an intake connection part communicating with the outside; An intake part that is detachably interconnected via an intake connection part and an intake line, a filter that purifies the air introduced into the intake part, a fan that forcibly causes an airflow, and the air that has passed through the filter prevents the forced airflow of the fan. In the negative pressure wheelchair device consisting of;
The chamber is further provided with a U-shaped door that can be opened and closed, a handle provided on the outer surface of the door, and a fixing means provided on the inner surface of the door. It is folded to face and fixed by a fixing means so that the inner surface of the door part is placed on the upper surface of the chamber in a facing state so as not to be exposed to the outside;
The chamber is further provided with an exhaust connection portion communicating with the outside;
The negative pressure machine has a sterilization tank equipped with a radiation unit for sterilizing the air that has passed through the HEPA filter by radiating a sterilizing agent, and a control unit for controlling the on/off of the radiation unit through selective control of the negative pressure mode and the sterilization mode is further reinforced become;
the exhaust portion is removably interconnected via an exhaust connection portion and an exhaust line;
An electromagnetic or mechanical on/off valve for controlling the flow of air is further reinforced in the intake connection part;
The negative pressure wheelchair device, characterized in that the intake line is further provided with an auxiliary intake line through which external air can be introduced when the intake connection part is closed by the on-off valve.
According to claim 1,
The door part is further provided with an auxiliary member of a transparent, translucent or opaque material that is formed to be opposite to each other based on the virtual fold line, the door part being made of a relatively flexible material compared to the auxiliary member; negative pressure, characterized in that wheelchair device.
According to claim 1,
The chamber frame is made to be folded or unfolded; negative pressure wheelchair device, characterized in that.
According to claim 1,
A negative pressure wheelchair device, characterized in that the chamber is further provided with a glove port capable of inspecting and examining the occupant's condition, and a tube coupling part into which the Ringer tube is detachably fitted.
According to claim 1,
The mechanical on/off valve is
a gate rotatably installed in the intake connection part to close or open the inside of the intake connection part;
Negative pressure wheelchair device, characterized in that; configured to be exposed to the outside of the intake connection portion so as to rotate the gate.
According to claim 1,
The control unit is
When the negative pressure mode is selected through the user's input unit operation, the fan is driven in the forward direction,
When the positive pressure mode is selected through the user's input unit operation, the fan is driven in the reverse direction.
A negative pressure wheelchair device, characterized in that when the user selects the sterilization mode through the input unit operation, the radiation unit is driven while the fan is driven in the forward direction.
According to claim 1,
In the negative pressure device,
A negative pressure wheelchair device comprising: a UV lamp disposed between the intake part and the exhaust part to sterilize the air introduced into the intake part; and a photocatalytic filter for removing harmful substances in response to the UV lamp.
According to claim 1,
The radiation unit is an ultrasonic vibrator that vibrates to vaporize the sterilizing agent; negative pressure wheelchair device, characterized in that.
8. The method of claim 7,
It is installed in the chamber and further comprises a human body detection sensor for detecting the presence of a human body;
The control unit limits the activation of the sterilization mode when a human body detection signal is input from the human body detection sensor; Negative pressure wheelchair device, characterized in that.
10. The method of claim 9,
A negative pressure wheelchair device, characterized in that a pair of the photocatalytic filters are arranged in a line along the airflow, and the UV lamp is arranged between the pair of photocatalytic filters.
11. The method of claim 10,
The photocatalytic filter is a cylindrical shape with the UV lamp as the center point; negative pressure wheelchair device, characterized in that. delete delete

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