JP2011030738A - Infection prevention device and infection prevention system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an infection prevention device and an infection prevention system, capable of surely preventing a medical worker from getting infected aerially by the droplets of a patient holding viruses by blowing clean air from behind the medical worker when the medical worker and patient are brought into contact in an examination room or the like. <P>SOLUTION: The infection prevention device 10 includes: a filter 15; a casing 14 provided with air feed means 16 for sending clean air obtained by making the air inside a room pass through the filter 15 forward; and a hood 40 provided on the casing 14, for covering the medical worker M to prevent aerial infection and forming a space for sending the clean air from the air feed means 16 forward and downward. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an infection prevention device and an infection prevention system, and more particularly, an infection that is used in, for example, a medical site and sends clean air through a filter to a medical worker, thereby preventing secondary infection due to, for example, influenza. The present invention relates to a prevention device and an infection prevention system.

  For example, when a doctor meets a patient in the examination room or the like and examines the patient, an air purifying unit with a self-supporting stand is placed behind the doctor and clean air is sent from the doctor to the patient. To do. Accordingly, it is disclosed that secondary infection from a patient suffering from an air-borne disease such as influenza to a doctor is prevented and breathing is facilitated by supplying clean air to the patient ( (See Patent Document 1).

Japanese Patent No. 3062693

However, since the air purification unit disclosed in Patent Document 1 is merely arranged vertically, the clean air supplied from the air purification unit is a horizontal laminar flow. For this reason, for example, if clean air is blown from the back of the doctor, the doctor's head blocks the clean air, and eddy currents are likely to occur in the suction part of the doctor's mouth and nose, so the clean air does not reach. Therefore, there is a case where the suction site which is substantially the peripheral region of the mouth or nose cannot be prevented from being contaminated.
Usually, there is a wall or the like behind the patient, and when the clean air is blown from behind the doctor, the contaminated air that passes from the patient and leaves the patient is contaminated by the back wall of the patient. It spreads up, down, left and right.

However, in order to allow clean air to reach the suction site of the doctor's mouth or nose, for example, as shown in FIG. If the distance between the doctor and the wall on the downstream side is large, the clean air is contaminated with viruses when passing through the doctor and the patient, and becomes contaminated air before the contaminated air collides with the wall. May spread throughout the room.
Therefore, in order to solve the above problems, the present invention possesses a virus by blowing clean air from behind a medical worker when a medical worker such as a doctor and a patient approach in an examination room or the like. It is an object of the present invention to provide an infection prevention device and an infection prevention system that can reliably prevent a medical worker from being infected with air by the splash of a patient.

The infection prevention device of the present invention is provided with a casing having an air purification filter, and an air feeding means for sending clean air obtained by passing indoor air through the filter, and the casing is provided to prevent air infection. And a hood forming a space for covering the subject to be sent and sending the clean air from the air feeding means forward and downward.
According to the above configuration, when a medical worker such as a doctor and a patient come into contact with an examination room or the like, the medical worker is blown with clean air from the back of the medical worker, thereby causing the medical worker to spray the virus. Can be reliably prevented from being infected by air.

In the infection prevention apparatus of the present invention, the hood includes a shielding sheet, and a plurality of supporting frames that hold the shielding sheet and expand in a stepped and bellows-like manner in the forward and downward directions. It is characterized by having.
According to the above configuration, the hood has a simple structure including the shielding sheet and a plurality of supporting frames, and the shielding sheet can be easily unfolded when in use and stored compactly when not in use.

In the infection prevention apparatus of the present invention, the shielding sheet has an insertion holding portion for inserting and holding each supporting frame, and both end portions of each supporting frame are respectively connected to the supporting frame assembly receiving portion. It is attached so that rotation is possible.
According to the above configuration, each supporting frame is inserted into the insertion holding portion of the shielding sheet and rotated by the supporting frame assembly receiving portion, so that the hood can be easily removed. Can be stored compactly when not in use.

In the infection prevention apparatus according to the present invention, the support frame may be divided at a plurality of locations in a single wire-like member or in the length direction.
According to the above configuration, if the supporting frame is a single wire-like member, the number of parts can be reduced, and if the supporting frame can be divided at a plurality of locations, a long supporting frame can be used. The work of inserting into the insertion holding portion of the shielding sheet can be facilitated.

In the infection prevention apparatus of the present invention, the radius of curvature is gradually reduced from the base end portion to the tip end portion so that the cross section of the hood has a steeper slope than the ¼ circle curve, and is tapered. It is said that it is said.
According to the above configuration, clean air can be reliably narrowed and supplied to a narrower space in front and below corresponding to the space around the nose and mouth of the subject to prevent air infection.

In the infection prevention apparatus of the present invention, the support frame assembly receiving portion includes an angle adjusting portion that holds the support frame at a plurality of different inclination angles.
According to the above configuration, the hood can be held at an arbitrary angle.

In the infection prevention apparatus of the present invention, one of the supporting frame assembly receiving portions and the other supporting frame assembly receiving portion are respectively disposed between two opposing plate-like members and the opposing plate-like members. An end holding member attached to the end holding member, and an end of the support frame is detachably attached to the end holding member.
According to the above configuration, the hood can be easily replaced.

The infection prevention apparatus according to any one of claims 2 to 7, further comprising a holding member that holds the shield sheet of the hood folded and stored. apparatus.
According to the said structure, the state which folded and stored the shielding sheet | seat of the food | hood can be hold | maintained reliably.

The infection prevention apparatus of the present invention includes a stand that can adjust the height of the casing and is detachable from the casing, and a caster for moving the stand.
According to the above configuration, the height of the casing and the hood can be adjusted, and the infection prevention apparatus can be freely moved using a caster when in use and when not in use.

The infection prevention system of the present invention is provided in the first casing having a first filter and an air feeding means for sending clean air obtained by passing indoor air through the first filter to the front, and the first casing. A first hood for covering a subject for preventing air infection and having a first hood that forms a space for sending the clean air from the air feeding means forward and downward, and a second hood. A second casing having a filter and second air feeding means for passing the room air through the second filter into clean air; and provided in the second casing, covering the patient, A second infection prevention device having a second hood that forms a space that passes upward and backward and passes through the second filter.
According to the above configuration, when a medical worker such as a doctor and a patient come into contact with an examination room or the like, the medical worker is blown with clean air from the back of the medical worker, thereby causing the medical worker to spray the virus. Can be reliably prevented from being infected by air.

  When the medical staff such as a doctor and a patient come into contact with an examination room or the like, the present invention blows clean air from behind the medical staff so that the medical staff can It is possible to provide an infection prevention apparatus and an infection prevention system that can reliably prevent infection.

It is a perspective view which shows Embodiment 1 of the infection prevention apparatus of this invention. It is a front view of the infection prevention apparatus shown in FIG. It is a side view which shows the usage example of the infection prevention apparatus shown in FIG. It is a perspective view which shows the example of a shape of the frame for support. It is a front view which shows the example of a shape of the frame for support. It is a perspective view which shows the insertion holding | maintenance part of a support frame. It is a side view which shows the edge part of a support frame group receiving part, a support frame, and an edge holding member. It is a perspective view which shows the support frame group | base receiving part shown in FIG. 7, the edge part of a support frame, and an edge part holding member. It is a figure which shows the structure where the edge part holding member is attached with respect to the flame | frame support part for support so that rotation is possible. It is a figure which shows the state in which the food | hood was accommodated small in the Z direction along the inner surface part of the casing. FIG. 11A shows the shape of the hood according to the first embodiment of the present invention, and FIG. 11B shows the shape of the hood according to the second embodiment of the present invention. It is a figure which shows the support frame in Embodiment 3 of this invention. It is a figure which shows the infection prevention system which is Embodiment 4 of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
(Embodiment 1)
FIG. 1 is a perspective view showing Embodiment 1 of the infection prevention apparatus of the present invention. FIG. 2 is a front view of the infection prevention apparatus shown in FIG. FIG. 3 is a side view showing an example of use of the infection prevention apparatus shown in FIG.
As shown in FIG. 3, the infection prevention apparatus 10 shown in FIGS. 1 and 2 is used, for example, in a medical field and sends clean air B to a medical worker M through a filter 15. It is a device that prevents the worker M from secondary infection due to influenza or the like.

The infection prevention apparatus 10 shown in FIGS. 1 and 2 can also be called an air cleaning unit, and has a main body 11, a stand 12, and a hood 40.
The main body 11 and the stand 12 shown in FIGS. 1 and 2 are made of metal, and the stand 12 holds the main body 11 with respect to the floor surface 13 in the Z direction (vertical direction). . The main body 11 has a box-shaped casing 14. The casing 14 has an inner surface portion 14A, an outer surface portion 14B, side surface portions 14C and 14D, an upper surface portion 14E, and a lower surface portion 14F.
As shown in FIG. 3, the air outlet 20 which is a rectangular opening is formed in the inner surface portion 14A, and the suction port 21 is formed in the outer surface portion 14B. The outlet 20 and the inlet 21 face each other. A pre-filter 21F is disposed at the suction port 21.

The casing 14 constitutes a fan filter unit. The casing 14 has, for example, one filter 15, two electric fans 16 as air feeding means, a switch 17, and a control unit 18. The electric fan is preferably an axial fan as will be described later.
As shown in FIGS. 1 and 2, the filter 15 is accommodated in the casing 14 and arranged corresponding to the air outlet 20. The electric fan 16 is disposed in the casing 14 and is disposed corresponding to the suction port 21. The switch 17 is disposed below the inner surface portion 14A. The control unit 18 is electrically connected to the electric fan 16 and the switch 17.
The control unit 18 has a connection cord 19R connected to a commercial power source. When the medical worker M turns on the switch 17, the electric fan 16 operates according to a command from the control unit 18. When the electric fan 16 operates, the room air A is taken into the casing 14 through the pre-filter 21F and passes through the filter 15 to become clean air B as shown in FIG. Is blown out against the medical worker M.

  As shown in FIGS. 1 and 3, the stand 12 holds at least the main body 11 so that it can be attached and detached and the vertical position can be adjusted in the Z direction. The stand 12 includes an attachment part 21 of the main body part 11, a back panel 22, left and right support members 23, left and right leg parts 24, and a hood attachment part 25. The attachment portion 21 is fixed by, for example, an insert nut embedded in the upper portion of the stand 12 and a bolt at the lower portion of the main body portion 11. The hood attachment portion 25 and the back panel 22 are, for example, an integrated body, and are detachably attached to the left and right support members 23 by, for example, bolts and nuts.

  As shown in FIG. 3, bolts 26 for height adjustment are attached to the left and right support members 23. The left and right support members 23 and the legs 24 are fastened by the bolts 26. By loosening this bolt 26, the height in the Z direction of the left and right leg portions 24 with respect to the left and right support members 23 is adjusted, and by tightening the bolt 26 again, the body portion 11 from the floor surface 13 in the Z direction is adjusted. The height position can be adjusted. As shown in FIG. 2, the left and right legs 24 are fixed by Y-direction support members 23B.

Support bases 27 are provided at the lower portions of the left and right leg portions 24, respectively. These support bases 27 include a pipe-shaped base portion 28 having a square cross section and an expansion member 29 that can be expanded from both ends of the base portion 28. The expansion member 29 is provided with a caster 31.
By loosening the adjusting bolt 30, the expansion member 29 can be expanded by extending back and forth along the X direction from the base 28, or can be inserted into the base 28. Thereby, the support width | variety of the X direction of the support base 27 can be adjusted, and the infection prevention apparatus 10 can be supported stably.

As shown in FIG. 1, two handles 19 are provided between the attachment portion 21 of the main body 11 and the support member 23. The infection prevention apparatus 10 can move freely and safely on the floor surface 13 by having these handles 19.
The main body 11 and the stand 12 described above can be detachably separated along the dividing line S by the attachment portion 21. Moreover, in the stand 12, the mounting portion 21, the back panel 22, the left and right support members 23, the hood mounting portion 25, the left and right legs 24, and the support base 27 can be preferably detachably disassembled. Thereby, since the infection prevention apparatus 10 is divided into parts, it is easy to carry, and for example, the work of assembling the infection prevention apparatus 10 in an examination room or the like is easy.

Next, the structure of the bellows type hood 40 shown in FIGS. 1 to 3 will be described.
As shown in FIGS. 1 and 2, the hood mounting portion 25 has left and right support frame assembly receiving portions 41. As shown in FIGS. 1 and 3, the hood 40 is developed and stored by a plurality of supporting frames 51, 52, 53, 54, 55 and these supporting frames 51, 52, 53, 54, 55. It has the shielding sheet 60 hold | maintained possible. The shielding sheet 60 is, for example, a transparent plastic sheet, and a polyethylene sheet can be used as an example. The number of support frames is not particularly limited.

As shown in FIG. 3, the support frame assembly receiving portion 41 fixes both ends of a plurality of support frames 51, 52, 53, 54, and 55 in a detachable manner. FIG. 5 is a front view showing a shape example of the support frames 51, 52, 53, 54, 55.
For the support frames 51, 52, 53, 54, 55, for example, wires as shown in FIG. 4 can be used, which are rod-like or linear plastic wires, metal wires, or carbon fibers. The support frames 51, 52, 53, 54, and 55 have a straight portion 57 and an arc portion 58. As shown in FIG. 5, the support frame 51 is the smallest and gradually increases as it reaches the hoods 52, 53, 54, and 55. With such a single wire-like member, the number of parts can be reduced.

  As shown in FIGS. 1 and 3, the shielding sheet 60 has insertion holding portions 61, 62, 63, 64, 65 for supporting frames. The insertion holding portions 61, 62, 63, 64, 65 of the support frame are formed in a tube shape or a bag shape as shown in FIG. Support frames 51, 52, 53, 54, and 55 can be inserted in the E direction into these support frame insertion holding portions 61, 62, 63, 64, and 65, respectively. In this way, the support frame is inserted into the insertion holding portion of the shielding sheet and rotated by the support frame assembly receiving portion, so that the shielding sheet can be unfolded during use and stored compactly when not in use. it can.

FIG. 7 is a side view showing the support frame assembly receiving portion 41, the end portions 51R, 52R, 53R, 54R, and 55R of the support frames 51, 52, 53, 54, and 55, and the end holding members 71 to 75. is there. 8 includes the support frame assembly receiving portion 41 and the end portions 51R, 52R, 53R, 54R, and 55R of the support frames 51, 52, 53, 54, and 55, and the end holding members 71 to 75 shown in FIG. It is a perspective view shown.
As shown in FIGS. 7 and 8, the end holding members 71 to 75 have a cylindrical portion 76 and a plate-like attachment portion 77 having a bolt hole 77 </ b> H. As shown in FIG. 7, the end portions 51R, 52R, 53R, 54R, and 55R of the support frames 51, 52, 53, 54, and 55 can be removably inserted into the cylindrical portion.

FIG. 9 shows a structure in which the end holding members 71 to 75 are attached to the support frame assembly receiving portion 41 so as to be rotatable at the position of the bolt 79.
The support frame assembly receiving portions 41 shown in FIG. 9 are provided at the left and right positions of the hood mounting portion 25 as shown in FIGS. The left and right support frame assembly receiving portions 41 are formed so as to protrude in parallel along the X direction, and have a pair of substantially semicircular plate-like members 78. As shown in FIG. 9, end holding members 71 to 75 are positioned between the pair of plate-like members 78. The bolt 79 is passed through the bolt hole 78H of the plate-shaped member 78 and the bolt hole 77H of the mounting portion 77, and is detachably fixed by a nut 80 with two spacers 81 interposed therebetween.
This makes it easy to remove the hood by inserting each supporting frame into the insertion holding portion of the shielding sheet and rotating it by the supporting frame assembly receiving portion. Sometimes it can be easily stored compactly.

  Further, as shown in FIGS. 8 and 9, at least one stopper 82 protrudes from the inner surface of the plate-like member 78 as a locking portion, for example. The end holding member 71 is locked by abutting a stopper 82. As a result, the stopper 82 is pressed against and held by the end holding member 71, so that the hood can be held at an arbitrary angle, and the end holding member 71 is at the lowest position N1, the intermediate position N2, and the highest position N3. Each can be arbitrarily adjusted. As shown in FIG. 7, the bolts 79 of the end holding members 71 are arranged along a straight line G.

By adopting the rotating bellows-type configuration as described above for the hood 40, the shielding sheet 60 can be lowered stepwise and forward and downward along the R1 direction as shown in FIG. It is like that. As shown in FIG. 10, the shielding sheet 60 of the hood 40 raises the supporting frames 51, 52, 53, 54, 55 and the end holding members 71 to 75 in the R2 direction, so that the hood 40 11 can be housed in a small and compact manner in the Z direction along the inner surface portion 14A.
Moreover, as shown in FIG. 10, for example, when the hood 40 is housed, a holding bracket 85 having a substantially L-shaped cross section can be used as shown. The holding metal fitting 85 is configured such that the base end portion can be rotated in the direction of arrow a on the upper surface of the main body 11 and can be moved in the direction of arrow b. The state is
Normally, the upper surface portion 14 of the main body 11 that is the casing 14 is moved and stored in the storage direction in the direction of arrow b (rightward in FIG. 10), pulled out to the left during use, and rotated in the direction of arrow a. Thus, the support frames of the hood 40 can be bundled and held. Thereby, it can prevent that the food | hood 40 carelessly expand | deploys in R1 direction.

FIG. 11A is a side view showing a state in which the shielding sheet 60 of the hood 40 is deployed. The attachment end portion 60 </ b> T of the shielding sheet 60 of the hood 40 is fixed to the inner surface portion 14 </ b> A of the main body portion 11 by an attachment tape member 90. The attachment tape member 90 is configured to detachably attach one tape 91 and the other tape 92 like a surface fastener.
Thereby, the attachment end portion 60T of the shielding sheet 60 of the hood 40 can be removed and replaced from the inner surface portion 14A of the main body portion 11, or the shielding sheet 60 can be cleaned, and maintenance is easy.

Next, the usage example of the infection prevention apparatus 10 mentioned above is demonstrated.
Referring to FIG. 3, the infection prevention apparatus 10 is placed on the floor surface 13 in the examination room, for example. At this time, the infection prevention apparatus 10 is placed behind the medical worker M. The medical worker M sits with the main body 11 on the back, and the patient T sits facing the medical worker M. The shielding sheet 60 of the hood 40 is developed in the R1 direction using the support frames 51, 52, 53, 54, 55. Thereby, the shielding sheet 60 covers the periphery of the head H and the shoulder F of the medical worker M. The shielding sheet 60 of the hood 40 is gradually lowered downward to form a space from the top of the filter 15 toward the front and the bottom.

When the medical worker M illustrated in FIG. 3 turns on the switch 17 illustrated in FIG. 1, the medical worker M operates according to a command from the control unit 18 illustrated in FIG. 3. When the electric fan 16 of FIG. 3 operates, the room air A is taken into the casing 14 and passes through the filter 15 to become clean air B.
The clean air B is blown out from the blowout port 20 to the medical worker M. Based on the function of the shielding sheet 60 of the hood 40, the clean air B that has been blown out travels forward and downward along the inner surface of the hood 60 and approaches the mouth and nose of the medical worker M. It passes through the surrounding area, that is, the area where breathing air exists, and is blown out from the shielding sheet 60 into the examination room.
Since the infection prevention apparatus 10 blows clean air from the medical staff M in the direction of the patient T, it is preferable if there is a wall or a partition on the back of the patient T, but the contaminated air blown out to the entire room of the examination room Since it does not spread and is sucked into the infection prevention apparatus 10, it is possible to circulate and clean the room efficiently.

  Along this path, clean air B is blown from the back of the medical worker M toward the nose and mouth suction sites from the hood 40 of the infection prevention apparatus 10. Therefore, the infection prevention apparatus 10 is a patient infected with a new virus or the like by blowing clean air from behind the medical worker M when the medical worker M such as a doctor and the patient T come into contact with each other in the examination room or the like. The spray of T can surely prevent the medical worker M from being infected with the air (secondary infection). Further, the back panel 22 is not opened so that the clean air B does not diffuse to the rear of the infection prevention apparatus 10.

  Since a rotating bellows-shaped hood 40 is provided on the outlet side of the filter 15 of the infection prevention apparatus 10, and clean air can be reliably supplied to the mouth of the medical worker M such as a doctor or the suction part of the nose. There is no need to use large equipment such as a clean booth. Since the rotary bellows-type hood 40 is provided, the position of the tip of the hood 40 can be freely adjusted according to the height of the mouth of the medical worker M and the suction part of the nose. Since the medical worker M wears the hood 40, it is possible to prevent the splashes splashed when the patient T sneezes from hitting the medical worker M. Further, by adjusting the height position of the casing 11, the hood 40 can be freely adjusted according to the height of the medical worker M's mouth and the suction part of the nose.

  As in the example shown in FIG. 8, at least the end holding members 71 and 72 are at the lowest positions (N1 and the like) and intermediate positions N2 and N3 slightly above the lowest positions, respectively. By arbitrarily adjusting the angle, the position of the tip portion 60W of the shielding sheet 60 shown in FIG. 3 can be slightly lifted and held in the R2 direction. Thereby, the medical worker M can raise the position of the front-end | tip part 60W of the shielding sheet 60 a little in R2 direction in the case of the operation | work which fills in a medical chart as needed, for example.

When the infection prevention apparatus 10 is not used, the shielding sheet 60 of the hood 40 can be stored small in the Z direction along the inner surface portion 14A of the main body portion 11 as shown in FIG. In addition, the storage state of the hood 40 can be held on the main body 11 side using the holding member 85. Thereby, when the infection prevention apparatus 10 is not used, it can be stored compactly and always available, and the hood 40 can be prevented from being inadvertently deployed in the R1 direction.
For example, when the shielding sheet 60 is torn and it is desired to replace the shielding sheet 60, the shielding sheet 60 is removed at the mounting tape member 90, and then the supporting frames 51, 52, 53, 54, 55 are removed from the shielding sheet 60. And the support frames 51, 52, 53, 54, 55 are passed through a new shielding sheet 60, and the end portions 51R, 52R of the support frames 51, 52, 53, 54, 55 as shown in FIG. , 53R, 54R, 55R may be fitted into the end holding members 71-75. For this reason, the shielding sheet 60 can be easily replaced.

Next, another embodiment of the present invention will be described. In another embodiment of the present invention described below, the same reference numerals are given to the same components as those in the first embodiment shown in FIGS. 1 to 11A, and detailed description thereof is omitted.
(Embodiment 2)
In the first embodiment of the present invention shown in FIGS. 3 and 11A, the shielding sheet 60 of the hood 40 is lowered obliquely downward in stages to shield the space from the upper part of the filter 15 toward the front and the lower part. It is like that. The cross section viewed from the side of the shielding sheet 60 forms a ¼ circle curve, and the radial length L1 of the lowermost portion 60W is relative to the radial length L of the inner end portion 60V. Slightly small. That is, the cross-sectional areas of the fixed portion and the movable portion of the hood 40 are substantially the same.

  On the other hand, in Embodiment 2 of the present invention shown in FIG. 11 (B), the cross section viewed from the side of the shielding sheet 60A of the hood 40A is formed steeper than a quarter-circle curve. That is, the curvature radius of the curve formed by the outer edge of the hood 40A from the proximal end portion to the distal end portion is gradually reduced. As a result, the cross-sectional area decreases from the fixed part of the hood 40 to the movable part. For this reason, the length L2 in the radial direction of the lowermost portion 60W is considerably smaller than the length L and the length L1 in the radial direction of the inner end portion 60V, thereby restricting the flow of the clean air B1. . Thereby, the clean air B can be more converged and sent to the region where the breathing air close to the mouth and nose of the medical worker M is present. Therefore, in the infection prevention apparatus of Embodiment 2, when the medical worker M such as a doctor and the patient T contact in the examination room or the like, the virus is retained by blowing clean air from behind the medical worker M. It is possible to more reliably prevent the medical worker M from being infected by air due to the splash of the patient T.

(Embodiment 3)
FIG. 12 is a perspective view showing Embodiment 3 of the present invention. In another embodiment of the present invention described below, the same reference numerals are given to the same components as those in the first embodiment shown in FIGS. 1 to 11A, and detailed description thereof is omitted.
The support frames 51 to 55 of Embodiment 1 shown in FIG. 4 are a single wire-like member. On the other hand, the supporting frames 51C to 55C shown in FIG. 12 are made of, for example, plastic or metal. The support frames 51 </ b> C to 55 </ b> C are divided into, for example, five along the length direction, and are composed of divided members 91, 92, 93, 94, and 95. Note that the number of divisions of the support frame is not limited to five.

  The division member 91 has insertion portions 91T and 91S, the division member 92 has an insertion portion 92S, the division member 93 has an insertion portion 93S, the division member 94 has an insertion portion 94S, and the division member 95 has It has an insertion portion 95S. The insertion portions 91T and 91S fit into the insertion holes 89H and 92H, the insertion portion 92S fits into the insertion hole 93H, the insertion portion 93S fits into the insertion hole 94H, the insertion portion 94S fits into the insertion hole 95H, and The insertion portion 95S fits into the insertion hole 96H. In this way, by allowing the support frames 51C to 55C to be divided in the length direction, the support frames 51C to 55C can be easily inserted into the shielding sheet as compared with a single support frame that is not divided.

(Embodiment 4)
FIG. 13: is a side view which shows the infection prevention system which is Embodiment 4 of this invention. In another embodiment of the present invention described below, the same reference numerals are given to the same components as those in the first embodiment shown in FIGS. 1 to 11A, and detailed description thereof is omitted.
In Embodiment 1 of this invention shown in FIG. 3, the infection prevention apparatus 10 is what is called a push-type air cleaning unit which blows off air, and is set only to the medical workers M side, such as a doctor.
In the infection prevention system 200 according to the fourth embodiment of the present invention shown in FIG. 13, not only the first infection prevention device 10 is set on the medical worker M side such as a doctor but also the second infection prevention device 10D. It is set on the patient T side.
The second infection prevention device 10D is a pull-type air cleaning unit that sucks so-called air. That is, the head and shoulders of the patient T are located in the hood 40 of the second infection prevention apparatus 10D. The first infection prevention device 10 and the second infection prevention device 10D basically have the same structure, and face each other with an interval.

Thus, the infection prevention system 200 includes the first infection prevention device 10 and the second infection prevention device 10A. The first infection prevention apparatus 10 has the same configuration as the infection prevention apparatus 10 shown in FIGS. 1 to 10, and forwards the first filter 15 and clean air B obtained by passing room air through the first filter 15 forward. Clean air from the electric fan 16 covering the first casing 14 having the electric fan 16 as the air feeding means to be sent, and the medical worker M, which is provided in the first casing 14 and is a subject to prevent air infection. It has the 1st food | hood 40 which forms the space which sends B toward the front and downward.
Further, the second infection prevention device 10A has a second casing 14D having a second filter 15D and an electric fan 16D as second air feeding means for passing the indoor air C through the second filter 15D and converting it into clean air D. And a second hood 40D that is provided in the second casing 14D, covers the patient T, and forms a space through which the indoor air C is sent upward and backward to pass through the second filter 15D.

The electric fan 16 of the infection prevention apparatus 10D rotates in the opposite direction to the electric fan 16 of the infection prevention apparatus 10 and sucks the contaminated indoor air C. As a result, the air that is blown into the room from the hood 40 of the infection prevention apparatus 10 and is contaminated is sucked into the hood 40D of the infection prevention apparatus 10D, passes through the patient T, and the contaminated air C is removed from the patient. It passes through the filter 15 after T and is released into the room as clean air D.
As a result, by using the two infection prevention devices 10 and 10D facing each other, the contaminated air does not diffuse throughout the room such as the examination room, and the air is quickly cleaned and blown into the room on the spot. It is possible to prevent as much as possible contamination of room air such as an examination room. Therefore, the air cleanliness in the room such as the examination room can be maintained. When a medical worker M such as a doctor and a patient T come into contact with each other in an examination room or the like, the medical worker M is blown by clean air from the back of the medical worker M, so that the medical worker M is sprayed by the droplets of the patient T holding the virus. More reliably prevent air infection

In order to confirm the operational effects of the structure described in the present embodiment, the inventors have verified that the following results are obtained.
In FIG. 3, in the state where the medical worker H is facing the patient T, the height is assumed to be close to the nose and mouth of the face of the medical worker H and about 400 mm away from the front surface of the main body 11. The cleanliness was confirmed by measuring the number of particles corresponding to several particle sizes in a space of 0.1 cubic feet at a position of 1300 mm from the floor. Incidentally, the degree of cleanness means that the smaller the number of particles measured, the cleaner.

In a state where the hood 40 is removed and no air is sent from the main body 11, that is, in a state where no infection prevention device is used, particles having a diameter of about 0.3 μm (hereinafter referred to as “A particle”) are present. 159,550 particles having a diameter of about 0.5 μm (hereinafter referred to as “B particles”), 14,874 particles having a diameter of about 1.0 μm (hereinafter referred to as “C particles”) being 2,104 There were 90 particles having a diameter of about 3.0 μm (hereinafter referred to as “D particles”) and 26 particles having a diameter of about 5.0 μm (hereinafter referred to as “E particles”).
Next, when only air is blown from the main body 11 without the hood 40 (wind speed 0.3 m / sec), the A particles are 100,088, the B particles are 7,708, the C particles are 1, There were 111 particles, 74 D particles, and 20 E particles.
It can be seen that without the hood 40, the effect of forming a clean space can hardly be expected even if air is blown.

Next, with the hood 40 of this embodiment mounted, the hood 40 was pulled down step by step while blowing under the same conditions as described above, and the above-described measurement was performed.
First, an angle θ formed by a virtual straight line connecting the front surface of the main body 11 and the tip of the pulled down hood 40 is about 35 degrees, that is, the tip position of the hood 40 covers a part of the head of the medical worker. Even when lowered to the extent (first pull-down position), the wind from the main body 11 is guided to some extent in the direction of arrow B in FIG. 3, resulting in the following measured values.
That is, there were 197 A particles, 15 B particles, 2 C particles, 0 D particles, and 0 E particles.

Next, an angle θ formed by a virtual straight line connecting the front surface of the main body 11 and the tip of the pulled down hood 40 is about 55 degrees, that is, the tip position of the hood 40 is the nose and mouth of the head of the medical worker. In the case of being lowered to the extent of covering the vicinity of the point (second pull-down position), the wind from the main body 11 is almost completely guided in the direction of arrow B in FIG. was gotten.
That is, there were 3 A particles, 0 B particles, 0 C particles, 0 D particles, and 0 E particles.

Further, the hood 40 is pulled down, and an angle θ formed by a virtual straight line connecting the front surface of the main body 11 and the tip of the pulled down hood 40 is about 75 degrees, that is, the hood 40 almost completely covers the face of the medical worker. The wind from the main body 11 was almost completely guided in the direction of the arrow B in FIG. 3 even when it was lowered to the extent that it was covered with (a third pulling position).
That is, there were 1 A particle, 0 B particle, 0 C particle, 0 D particle, and 0 E particle.

In the embodiment of the present invention, as the electric fan, an axial fan (axial blowout), a sirocco fan (lateral blow), a centrifugal fan (oblique blow), etc. can be adopted, but it is not particularly limited. In order to make the casing thin and compact, it is preferable to use one or a plurality of axial fans according to the desired air volume.
Since it is used indoors, in order to provide a low noise function, a sound absorbing material can be attached to the inside of the casing of the fan filter unit, or an active (reverse phase) silencer can be attached in the vicinity of the electric fan. In order to reduce the thickness of the casing and to lower the center of gravity of the casing, the electric fan can be arranged below the filter.

If the target is a fungus, a medium-performance filter with a fouling treatment can be used, but if the target is a virus, glass fiber filter paper, PTFE membrane filter paper, electret filter paper HEPA, ULPA is used. This is preferable because the virus once diffused in the room can be collected. As shown in FIG. 3, dust such as cotton in the air can be removed by arranging a pre-filter 21F in front of the electric fan 16, but the pre-filter includes glass fiber, non-woven fabric, felt, etc. Can be adopted. In addition, a chemical having a bactericidal effect such as chlorine dioxide can be sprayed on the prefilter.
The fan filter unit is a unit in which a fan and a filter are fixed in a casing. As the material of the casing, one made of a coated steel plate, stainless steel, galvanium steel plate, or the like can be used, but stainless steel is preferable because it targets bacteria and viruses. Considering that bacteria and viruses adhere to the fan, a structure in which a fan is provided at the inlet and a filter is provided at the outlet is preferable.

In consideration of air directivity and compactness, the hood can be connected to the fan filter unit at the outlet and can use a rotating hood. As the material of the hood, an antibacterial and antibacterial synthetic resin sheet, a metal film, or the like can be used, but a transparent synthetic resin sheet is preferable in view of being transparent. The supporting frame does not need to be made of a special material, and for example, a frame used in a baby stroller or the like can be adopted.
Further, the support frame is preferably inserted into all of the insertion holding portions of the support frame of the shielding sheet, but at least if the attachment end portion of the shielding sheet of the hood is fixed to the inner surface portion of the main body portion with an attachment tape member Only the insertion holding portion of the support frame corresponding to the state-of-the-art support frame may be inserted, and the portion corresponding to the other support frame may be simply covered with the shielding sheet on the support frame.
The hood can be attached and fixed with an attachment tape member, or the hood sheet can be sandwiched with an attachment bar member and fastened with screws.
In addition, the hood can be stored on the main body side using a holding bracket having a mechanism that is normally stored on the upper surface of the casing and pulled forward and rotated during use. Various methods such as holding the holding tape fixed to the end of the hood on the main body side with a hook-and-loop fastener or the like can be employed.
The stand preferably has a T-shaped structure as shown in FIG. 1 and can be adjusted in height in multiple stages. By attaching a caster such as a roller to the floor surface of the stand, the infection prevention apparatus can be freely moved in a room such as a doctor's office, so that it is easy to set up when using and clean up when not in use.

The present invention is not limited to the above embodiment.
The infection prevention apparatus of the present invention is effective for measures against nosocomial infections (airborne infections) such as new influenza, etc., but is not only applied to medical workers and patients such as medical offices, but also at exhibitions and museums. It is also possible to arrange the exhibits in the hood and apply it to the local air cleaning of the exhibits.
As described in the embodiment, the hood used in the present invention is not limited to a partially cylindrical one that is developed in a bellows type. For example, you may implement | achieve in the form which lowers | hangs gradually the plate body extended from the upper part of the front surface of the main-body part 11 toward the front.

DESCRIPTION OF SYMBOLS 10 Infection prevention apparatus 11 Main-body part 12 Stand 14 Casing 15 Filter 16 Electric fan as an air feeding means 17 Switch 20 Air outlet 21 Inlet 25 Hood attachment part 27 Support base 40 Hood 41 Support frame assembly part 51,52,53 , 54, 55 Support frame 60 Shielding sheet 61, 62, 63, 64, 65 Support frame insertion holding portion 71-75 End holding member 78 Plate-like member 82 Stopper 89X Angle adjusting portion 90 Holding member 200 Infection prevention system

Claims (10)

An air purification filter;
A casing having air feeding means for sending clean air obtained by passing room air through the filter forward;
Infection prevention comprising: a hood provided on the casing and covering a subject to prevent air infection, and forming a space for sending the clean air from the air feeding means forward and downward apparatus.   The hood includes a shielding sheet, and a plurality of supporting frames that hold the shielding sheet and expand in a stepped and bellows-like manner stepwise toward the front and the bottom. The infection prevention apparatus according to 1. The shielding sheet has an insertion holding part for inserting and holding each supporting frame,
The infection prevention device according to claim 1, wherein both end portions of each of the support frames are rotatably attached to the support frame assembly receiving portion.   4. The infection prevention apparatus according to claim 2, wherein the support frame is freely split at a plurality of locations in a single wire-like member or in the length direction.   The cross section of the hood has a tapered shape with a gradually decreasing radius of curvature from the base end portion to the tip end portion so as to have a steeper slope than a quarter circle curve. The infection prevention apparatus according to any one of claims 1 to 4.   The infection prevention apparatus according to any one of claims 3 to 5, wherein the support frame assembly receiving portion includes an angle adjustment portion that holds the support frame at a plurality of different inclination angles.   One of the supporting frame assembly receiving portions and the other supporting frame assembly receiving portion each have two opposing plate-like members and an end rotatably attached between the opposing plate-like members. The infection prevention device according to claim 3, further comprising an end holding member, to which the end of the support frame is detachably attached to the end holding member.   The infection prevention apparatus according to any one of claims 2 to 7, further comprising a holding member that holds a state in which the shielding sheet of the hood is folded and stored.   The infection according to any one of claims 1 to 8, comprising a stand capable of adjusting the height of the casing and detachable from the casing, and a caster for moving the stand. Prevention device. A first casing having a first filter and an air feeding means for sending clean air obtained by passing indoor air through the first filter forward, and a subject who is provided in the first casing and prevents air infection A first hood that forms a space for sending the clean air from the air feeding means forward and downward, and a first infection prevention device,
A second casing having a second filter and second air feeding means for passing the indoor air through the second filter into clean air;
A second infection prevention device, which is provided in the second casing and has a second hood that covers a patient and forms a space through which the indoor air is passed upward and backward to pass through the second filter. A characteristic infection prevention system.

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