JP3406461B2 - Mattress disinfection equipment - Google Patents

Description

BACKGROUND OF THE INVENTION BACKGROUND OF THE INVENTION [0001] for this invention include, for example disinfection device you disinfect mattress used in hospitals. [0002] For example, in hospitals and the like, the same mattress is repeatedly used for different patients, and in such a case, bacteria adhering to the mattress may cause another user to use the same mattress. There is a risk of causing infection, so-called nosocomial infection. Therefore, when the user of the mattress changes, it is practiced to disinfect the mattress to prevent nosocomial infection. [0003] The mattress is generally disinfected using a sterilizing gas such as ozone. That is, the mattress is housed in an airtight disinfecting bag, and a sterilizing gas is supplied into the bag to sterilize the mattress. However, the above-mentioned mattress is formed by laminating an elastic sheet on a spring unit, and covering the laminated body with a bag-shaped outer cloth. For this reason, it is difficult to spread the sterilizing gas evenly over the entire interior of the mattress, for example, inside the elastic sheet, by simply supplying the sterilizing gas into the disinfecting bag containing the mattress. There was a case that even if it could be disinfected, the inside could not be disinfected reliably. Therefore, if the mattress is housed in a disinfecting bag, the inside of the disinfecting bag is depressurized to make the mattress in a compressed state, and in that state, a sterilizing gas is supplied to the disinfecting bag. By doing so, a sterilizing gas is spread throughout the inside of the mattress, and it is ensured that not only the surface of the mattress but also the inside is sterilized. However, according to such a disinfecting method, when a non-disinfected mattress is accommodated in a disinfecting bag and the inside thereof is depressurized, the air in the disinfecting bag is discharged to the atmosphere. Therefore, the bacteria attached to the mattress are also discharged from the disinfecting bag, and there is a risk that the bacteria may be released into the atmosphere. [0007] In addition, since the mattress is quite large and heavy, its handling is not easy. Therefore, when disinfecting, it is not easy to store the mattress in the disinfecting bag by one worker, so that the workability may be poor. When the mattress is placed in a disinfecting bag and disinfected with a sterilizing gas, the inside of the disinfecting bag is decompressed in order to enhance the disinfection effect. Bacteria adhering to the mattress may be included in the air discharged from the bag, which is not preferable for sanitation. [0009] Further, since it is not easy for a single worker to put a large mattress in and out of the disinfecting bag, the workability when disinfecting using the disinfecting bag may be poor. It is an object of the present invention to provide a mattress disinfecting apparatus which allows a mattress to easily enter and exit a disinfecting bag. [0011] [0012] According to an aspect of the invention of claim 1, in sterilizing apparatus of the mattress to be disinfected by sterilizing gas mattress, a fixed frame, provided slidably on the fixed frame A movable frame, one end in the longitudinal direction is formed in an openable and closable part by a flexible sheet having airtightness, and one end in the longitudinal direction is suspended from the movable frame, and the other end is suspended from the fixed frame. A disinfecting bag provided, a supply unit provided in the disinfecting bag for supplying a sterilizing gas into the disinfecting bag, and disinfecting the disinfecting bag in a state in which the movable frame provided on the fixed frame is retracted to reduce the disinfecting bag. A supporting portion for supporting one end of the mattress inserted into the bag, wherein the mattress is inserted into a reduced disinfection bag. While being supported by the support portion, by sliding the movable frame in the forward direction, characterized in that the mattress is housed within the sterilization bag is expanded. According to the first aspect of the present invention, if one end of the mattress is placed on the support of the fixed frame with the movable frame retracted, and then the movable frame is slid in the forward direction, The mattress can be stored in a disinfection bag. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mattress disinfecting apparatus shown in FIGS. 1 (a) to 1 (c) has a fixed frame 1. In the fixed frame 1, the upper and lower portions of a rectangular front frame 2 and a rear frame 3 are connected in parallel by four upper connecting rods 4 and lower connecting rods 5, respectively. Casters 6 with stoppers are provided at lower ends of the front frame 2 and the rear frame 3, respectively. The front frame 2 and the rear frame 3 are reinforced by stays 1a. The upper connecting rod 4 has a rectangular tube shape as shown in FIG. 2 (a), and upper fixing hooks 7 are provided on a lower surface thereof at predetermined intervals in a longitudinal direction. A movable rod 9 having a channel shape and forming a channel 8 is slidably inserted therein. The upper ends of the gate-shaped movable frame 11 are connected and fixed to the front ends of the four movable rods 9. A caster 12 with a stopper is provided at the lower end of the movable frame 11.
a is provided. The movable rod 9 is provided with one side opened in a slit shape facing downward, and a plurality of movable hooks 12 are slidably provided therein. The four lower connecting rods 5 form a pair of two, each serving as a support portion 13 for supporting one end in the longitudinal direction of the mattress M as described later, and two adjacent lower connecting rods forming a pair. As shown in FIG.
a are provided at predetermined intervals along the longitudinal direction. In the fixed frame 1 and the movable frame 8, two disinfecting bags 21 (one shown in FIG. 1C) are held side by side. That is, the disinfecting bag 21 is formed in a height and length dimension capable of accommodating the mattress M in a state in which the width direction is up and down by a flexible sheet having airtightness. One end face is formed in an opening / closing section 22 that can be freely opened and closed. This access section 22 is shown in FIG.
As shown in (c), the zipper can be opened and closed by a vinyl chuck 22a and can be held by a velvet fastener 22b in a bent state. That is,
The inlet / outlet section 22 can maintain airtightness against fluctuations in internal pressure when closed. Belts 23 are provided on the outer peripheral surface of the disinfecting bag 21 at predetermined intervals in the longitudinal direction. This belt 23
As shown in FIGS. 2 (a) and 2 (b), the upper surface of the disinfecting bag 21 is provided over the entire length of the outer peripheral surface thereof. The lower connection piece 23b is formed in each part. The upper connecting piece 23a, which is located on one end side in the longitudinal direction of the disinfecting bag 21, that is, on the side of the entrance 22, is a movable frame.
The upper connecting piece 23 attached to the movable hook 12 provided on the pair of movable rods 9 adjacent to the
a is attached to an upper fixing hook 7 provided on a pair of adjacent connecting rods 4 of the fixed frame 1. Further, the lower connecting piece 23a is attached to a lower fixed hook 13 provided over the adjacent lower connecting rod 5 of the fixed frame 1. Therefore, the disinfecting bag 21 provided over the fixed frame 1 and the movable frame 8 is in a retracted position where the movable frame 8 is located inside the fixed frame 1 as shown in FIG. 3) when it is slid in the forward direction of being pulled out from the movable frame 8 as shown in FIG.
The extension is performed as shown in FIG. As shown in FIG. 1 (c), a first air supply / exhaust hole 25a is formed on one end in the longitudinal direction and a second air supply / exhaust hole 25b is formed on the other end of the disinfecting bag 21 as shown in FIG. Have been. One end of a first tube 26a and one end of a second tube 26b are detachably connected to the supply / exhaust holes 25a and 25b, respectively, and a disinfection unit 27 is connected to the other end. The disinfecting unit 27 is shown in FIGS.
As shown in (c), an ozone decomposer 28 for decomposing ozone as a disinfecting gas and an ozone generator 29 for generating ozone supplied to the disinfecting bag 21 are provided. An electric first three-way valve V1 and a second three-way valve V2 are connected to the downstream side and the upstream side of the ozone decomposer 28, respectively. On the upstream and downstream sides of the ozone generator 29, a third three-way valve V3 and a fourth
Is connected to the three-way valve V4. The other end of the first tube 26a is connected to the fourth three-way valve V4, and the second tube V is connected to the second three-way valve V2.
The other end of 2 is connected. The first three-way valve V1 and the third three-way valve V3
Each of the ports is in communication with the atmosphere. One port of the second three-way valve V2 is connected to the downstream side of the ozone generator 29 by a first bypass pipe 31, and is connected to the fourth three-way valve V4 and the upstream side of the ozone decomposer 28. Are connected by a second bypass pipe 32. Further, a pump 33 and an air cleaner 34 are provided between the first three-way valve V1 and the third three-way valve V3. Next, a procedure for disinfecting the mattress M by the disinfecting apparatus having the above configuration will be described. First, the worker retracts the movable frame 8 as shown in FIG. 3 (a), reduces one end of the disinfecting bag 21 suspended on the movable frame 8, and disposes the disinfecting bag 21. Access 23
To release. Then, one end of the mattress M in the longitudinal direction is inserted into the disinfecting bag 23 from the access port 23 while the mattress M is standing, and the inserted one end is disinfected to the supporting portion 13 provided below the fixed frame 1. It is placed via the other end of the bag 23. This state is shown in FIG. Next, the worker holds the mattress M with one hand.
As shown in FIG. 1 (c), the movable frame 8 is slid in the forward direction with the other hand while holding the portion protruding from the access portion 23. As a result, the mattress M is stored in the disinfecting bag 23, so that the access port 23 is closed to seal the disinfecting bag 23. At this time, the reduced portion of the disinfecting bag 23 is expanded. That is, since the disinfecting bag 23 is originally extended at the other end corresponding to the support portion 13 at which one end of the mattress M is supported, even if the movable frame 8 is slid, it is hardly extended. Since the one end on which the access portion 23 is formed is extended, one end is connected to the support portion 13.
Is hardly slid in the direction of being disengaged from the support portion 13 by the disinfecting bag 23 extending with the movable frame 8. In this manner, the mattress M is
Is stored, the mattress M is disinfected. The disinfection of the mattress M is performed by a preliminary disinfection step and a main disinfection step. The preliminary disinfection step is performed in steps 1 to 3 shown in FIGS. Step 1 shown in FIG.
3 is operated to suck outside air from the first three-way valve V1 as shown by a broken arrow in the drawing, and the outside air is supplied to the ozone generator 29 through the cleaner 34 and the third three-way valve V3. As a result, the ozone generator 29 generates ozone, which is a sterilizing gas. A part of the ozone is supplied from the fourth three-way valve V4 through the first tube 26a to the disinfecting bag 23 through the first supply / exhaust hole 25a as indicated by a solid line arrow in FIG. First bypass pipe 3
The gas is supplied to the disinfecting bag 23 from the second air supply / exhaust hole 25b through the first and second three-way valves V2. When a predetermined amount of ozone is supplied to the disinfecting bag 23, the step 2 shown in FIG. 4B is performed.
In step 2, the first three-way valve V1 and the second three-way valve V2 are switched, and the ozone generated by the ozone generator 29 flows from the first supply / exhaust hole 25a to the disinfecting bag 23 as indicated by the solid line arrow in FIG. And the second supply / exhaust hole 25
It is sucked from b. The sucked ozone is decomposed by the ozone decomposer 28 and becomes non-toxic oxygen. The ozone passes through the pump 33, the cleaner 34 and the third three-way valve V3 as shown by the broken arrow in FIG. Returning to the ozone generator 29, it is converted to ozone again, and the first supply / exhaust hole 25 is
a to the disinfecting bag 23. When step 2 is continued for a predetermined time, the second
Is switched between the three-way valve V2 and the fourth three-way valve V4 in FIG.
Step 3 shown in (c) is performed. This step 3
Then, the ozone generated by the ozone generator 29 passes through the first bypass pipe 31 and the second three-way valve V2 and passes through the second air supply / exhaust hole 25b as shown by the solid arrow in FIG.
And the ozone in the disinfection bag 23 is supplied to the first air supply / exhaust hole 2.
5a flows into the ozone decomposer 28 through the fourth three-way valve V4 and the second bypass pipe 32. The decomposed gas flows into the ozone generator 29 as indicated by the broken arrow in FIG. By performing Step 3 for a predetermined time, the preliminary disinfection step is completed. According to such a preliminary disinfection step, since the mattress M is disinfected by circulating ozone in the disinfection bag 23, at least the surface of the mattress M can be surely disinfected. Moreover, since the gas in the disinfecting bag 23, in particular, the air before being turned into ozone is not exhausted to the outside at all, the bacteria attached to the mattress M are not diffused to the outside. When the preliminary disinfection step is completed, the main disinfection step is performed. This main disinfection step is performed in steps 4 to 6 shown in FIGS. In step 4, the pressure inside the disinfection bag 23 is reduced. That is, the ozone remaining in the disinfecting bag 23 in the preliminary disinfecting process is decomposed by the suction force of the pump 33 through the first and second air supply / exhaust holes 25a and 25b as indicated by solid arrows in FIG. Vessel 2
Then, the air is sucked into the fuel tank 8 and decomposed there, and is released from the third three-way valve V3 into the atmosphere as shown by a broken arrow in FIG. Most of the gas released into the atmosphere from the third three-way valve V3 is obtained by decomposing the ozone used in the preliminary disinfection step, so that the gas may contain almost all bacteria. Absent. When the pressure in the disinfecting bag 23 is reduced, the mattress M is compressed and gas contained in the elastic sheet is discharged. However, in the preliminary disinfection step, ozone is circulated to disinfect the mattress M. Therefore, the gas hardly contains bacteria. When the pressure in the disinfecting bag 23 is reduced, in step 5, outside air is sucked from the first three-way valve V1 as indicated by a broken arrow in FIG. The air is supplied to the disinfecting bag 23 only from the first air supply / exhaust hole 25a, and the second air supply / exhaust hole 25b is shut off by the second three-way valve V2. At this time, the pressure in the disinfecting bag 23 increases from the decompressed state, and the mattress M in the compressed state expands, so that the ozone is sufficiently sucked into the mattress. When ozone is supplied to the disinfecting bag 23 up to a predetermined pressure, although not shown, the disinfecting bag 2 is connected to the first supply / exhaust hole 25a and the second supply / exhaust hole 25b as in step 4.
The inside of the disinfecting bag 23 is depressurized by sucking the ozone in 3 and dispersing it into the atmosphere from the third three-way valve V3. This is referred to as step 5 '. In step 6, the first
Is shut off by the fourth three-way valve V4, and ozone is supplied from the second supply / exhaust hole 25b. Then, by inflating the disinfecting bag 23, as in step 5, ozone can be sucked into the mattress M, so that the inside can be surely disinfected. When the predetermined amount of ozone has been supplied in step 6, although not shown, the ozone in the disinfecting bag 23 is sucked from the first and second air supply / exhaust holes 25a and 25b as in step 4. Is decomposed by the ozone decomposer 28 and the third three-way valve V
This disinfection process is completed by releasing into the atmosphere from 3. This is referred to as step 6 '. According to such a disinfecting method, the gas in the disinfecting bag 23 is not radiated to the outside in the atmosphere in the preliminary disinfecting step, so that there is no fear that the bacteria adhered to the mattress are scattered to the surroundings. In this disinfection process, gas is diffused to the outside in the disinfection bag 23. Since the gas is ozone used in the preliminary disinfection process and the mattress M has been disinfected to some extent in the preliminary disinfection process, Even if the mattress M is compressed and the gas is discharged from the inside, the bacteria can hardly be contained. Therefore, the bacteria attached to the mattress M can be disinfected without scattering to the outside. In addition, in the pre-disinfection step and the main disinfection step, the supply of ozone is controlled by the first supply / exhaust holes 25a and the second supply / exhaust holes 25b formed at one end and the other end in the longitudinal direction of the disinfection bag 23. , The ozone can be circulated throughout the inside of one end side and the other end side even if the disinfection bag 23 is long.
Therefore, the long mattress M can be reliably disinfected over the entire length. According to the first aspect of the present invention, a mattress disinfecting apparatus is provided with a fixed frame having a supporting portion, a movable frame, and an access which is attached to these frames and one end of which can be freely opened and closed. And a disinfecting bag formed in the section. For this reason, one end of the mattress inserted into the disinfecting bag from the access port is placed on the support with the movable frame retracted, and then the movable frame is slid in the forward direction. Thus, the mattress can be stored in the disinfecting bag, so that the storing operation can be easily performed by one worker.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 (a) to 1 (c) show a disinfecting apparatus according to an embodiment of the present invention, wherein (a) is a perspective view showing a state in which a movable frame is retracted, and (b). Is a perspective view of the state where it is similarly advanced, (c)
Is a perspective view of a state in which the disinfecting bag is extended. 2A is a sectional view of a disinfecting bag attached to a fixed frame, FIG. 2B is a sectional view of a disinfecting bag also attached to a movable frame, and FIG. FIG. 2 is a perspective view showing a part of an access portion formed at a tip end of the device. FIGS. 3A to 3C are explanatory diagrams sequentially showing a procedure for accommodating a mattress in a disinfecting bag. FIGS. 4A to 4C are explanatory diagrams of Steps 1 to 3 of the preliminary disinfection process. 5 (a) to 5 (c) are explanatory diagrams of steps 4 to 6 of the present disinfection process. [Description of Signs] 1 ... Fixed frame 8 ... Movable frame 13 ... Support 21 ... Disinfection bag 27 ... Disinfection unit (supply unit)

Continuation of front page (56) References JP-A-7-112017 (JP, A) JP-A-8-57027 (JP, A) JP-A-1-204670 (JP, A) JP-A-4-22365 (JP) JP-A-6-327748 (JP, A) JP-A-56-102249 (JP, A) JP-A-64-15053 (JP, A) JP-A-4-15937 (JP, U) JP-A 64-28645 (JP, U) JP-A 63-13146 (JP, U) JP-A 11-10281 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61L 2/20 A61G 7/05

Claims (1)

(57) [Claim 1] A mattress disinfection apparatus for disinfecting a mattress with a sterilizing gas, comprising: a fixed frame; a movable frame slidably provided on the fixed frame; A disinfecting bag provided with a flexible sheet having one longitudinal end surface formed in an openable / closable portion, one end in the longitudinal direction suspended from the movable frame, and the other end suspended from the fixed frame. A supply unit provided in the disinfecting bag and supplying a sterilizing gas therein; and the mattress inserted in the disinfecting bag in a state where the movable frame provided on the fixed frame is retracted to reduce the disinfecting bag. And a support portion for supporting one end of the mattress, wherein the mattress is inserted in a reduced disinfection bag, and is supported by the support portion. By sliding the movable frame in the forward direction, the mattress disinfection device, characterized in that the mattress is housed within the sterilization bag is expanded.