Device for input material management

Abstract

To provide a configuration capable of surely making a wireless tag of an input material inputted through an input opening a reading target without making a wireless tag of a not-yet-inputted material a reading target.SOLUTION: A dust box 10 is stored in a storage part 30 after medical equipment E inputted through an input operation 21 passes through in a radio wave leakage prevention area S1, a wireless tag reader 40 and an antenna 41 are arranged so as to make a wireless tag T in the radio wave leakage prevention area S1 a communication target, and a radio wave absorption part 50 is arranged around the radio wave leakage prevention area S1.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an input item management device for acquiring information about an input item by using a wireless tag attached to the input item. [Background technology]

[0002] Conventionally, an example of an operation for managing an item using information read from a wireless tag such as an RF tag attached to the item is an operation in which a wireless tag recording predetermined information is attached to a disposable medical instrument, and the usage status of the medical instrument is managed using the information read from the wireless tag. In such an operation, for example, inventory management, replenishment planning, etc. can be performed by aggregating the information read from the wireless tag of the medical instrument when the used medical instrument is disposed of.

[0003] For example, the reading system disclosed in Patent Document 1 below places an antenna near the opening of a trash can for disposing of medical waste, and uses information read from the RF tags attached to the medical waste via the antenna to manage the disposal of the medical waste. In this reading system, a first antenna and a second antenna are placed along two orthogonal sides of the four sides surrounding the opening of the trash can, thereby preventing missed readings of the RF tags of inserted medical waste. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2017-019602 Summary of the Invention [Problem to be solved by the invention]

[0005] However, although the use of two orthogonal antennas as described above can prevent RF tag reading failures, the enhanced reading performance means that, for example, if an unused medical instrument that is not currently being discarded is carried near a trash can, the RF tag of that unused medical instrument may be mistakenly read.If there is a possibility that the RF tag of a medical instrument that is not currently being discarded may be mistakenly read, there is a problem in that accurate disposal management of medical waste using RF tags cannot be performed.

[0006] To address this issue, for example, when disposing of medical waste, a reading start operation is performed on a reader that reads the wireless tag, and then a reading end operation is performed after the medical waste is placed in a trash can, thereby preventing unnecessary reading of the wireless tag. However, this requires the reading start operation and reading end operation to be performed for each disposal operation, which makes the disposal operation cumbersome. This issue arises not only in the management of medical instruments that are disposed of by being placed in a trash can, but also in the management of input items using the wireless tags of the input items.

[0007] The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a configuration that can reliably read the wireless tags of items inserted through the insertion port, without reading the wireless tags of items that have not been inserted. [Means for solving the problem]

[0008] In order to achieve the above object, the input item management device (10) according to the present invention comprises: an outer shell structure (20) into which an input item (E) having a wireless tag (T) attached thereto is input through an input port (21); a storage section (30) disposed within the outer shell structure, in which the inserted item inserted through the insertion port is stored after passing through a predetermined area (S1); an antenna (41) arranged to communicate with the wireless tags within the predetermined area; a radio wave absorbing portion (50, 50a, 50b, 50c) disposed around the predetermined area; The present invention is characterized by comprising: The symbols in parentheses above indicate the correspondence with the specific means described in the embodiments to be described later. [Effects of the Invention]

[0009] In the present invention, an item inserted through an insertion port passes through a specified area and is then stored in a storage section, an antenna is positioned so as to communicate with wireless tags within the specified area, and a radio wave absorbing section is positioned around the specified area.

[0010] As a result, when an item with a wireless tag attached is inserted through the insertion slot and passes through the specified area, the information recorded on the wireless tag can be read via the antenna, and the information read in this manner can be used to understand the insertion status of the items stored in the storage unit. In particular, because the radio wave absorbing section is disposed around the specified area, it is difficult for radio waves from the antenna to reach wireless tags that do not pass through the specified area, such as wireless tags of items that have not been inserted near the device. Therefore, it is possible to realize an inserted item management device that can reliably read the wireless tags of items inserted through the insertion slot, without reading the wireless tags of items that have not been inserted.

[0011] The input item may be a disposable medical device, and the receptacle may be a trash can for storing discarded medical devices.

[0012] The radio wave absorbing unit may include radio wave absorbing panels arranged on at least three of the four sides (front, back, left, and right) surrounding the predetermined area. In this way, while an insertion opening is provided on each of the four sides (front, back, left, and right) surrounding the predetermined area, by arranging radio wave absorbing panels on three sides (rear, left, and right excluding the front), for example, the rear, left, and right sides, it is possible to ensure a wider insertion opening while increasing the effect of the radio wave absorbing unit in suppressing radio wave leakage from the predetermined area.

[0013] In addition to the radio wave absorbing panels on the three sides, the radio wave absorbing unit may also include a radio wave absorbing panel placed above the predetermined area. This makes it possible to suppress radio wave leakage above the predetermined area without interfering with the items dropping within the predetermined area, thereby further improving the effectiveness of the radio wave absorbing unit in suppressing radio wave leakage from the predetermined area.

[0014] The antenna may be positioned above the predetermined area so as to radiate radio waves toward the bottom of the storage compartment. This allows both wireless tags passing through the predetermined area and wireless tags stored in the storage compartment to be read without excessively increasing the radio wave output from the antenna. This reduces missed readings of wireless tags of items inserted through the insertion slot, thereby improving the reading accuracy of the wireless tags of inserted items. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view illustrating a schematic configuration of a dust box according to a first embodiment. FIG. [Figure 2] FIG. 2 is a front view of the dust box of FIG. [Figure 3] FIG. 2 is a side view of the dust box of FIG. 1. [Figure 4] FIG. 2 is a perspective view of the radio wave absorber of FIG. [Figure 5] 10 is an explanatory diagram illustrating the reading area of ​​the dust box including the radio wave leakage prevention area, etc. FIG. [Figure 6] FIG. 6(A) is a perspective view illustrating the radio wave absorbing portion of a dust box according to a first modified example of the first embodiment, and FIG. 6(B) is a perspective view illustrating the radio wave absorbing portion of a dust box according to a second modified example of the first embodiment. [Figure 7] FIG. 10 is a perspective view illustrating a radio wave absorbing portion of a dust box according to a third modified example of the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] [First embodiment] Hereinafter, a first embodiment in which an input item management device according to the present invention is applied to a dustbin will be described with reference to the drawings. The dust box 10 shown in FIGS. 1 to 3 is configured as an input item management device for acquiring information about the input item by using a wireless tag T such as an RF tag attached to the input item.

[0017] Specifically, in this embodiment, a disposable medical instrument E such as a catheter is adopted as the input item to which the RFID tag T is attached. Predetermined information for identifying the medical instrument E to which the RFID tag T is attached is recorded in a readable and writable manner as tag information in the RFID tag T.

[0018] The dust box 10 of this embodiment functions as a trash can for medical instruments, etc., and is configured to temporarily store (store) medical instruments E inserted through an insertion port 21 for disposal, as shown in Figures 2 and 3, and to transmit tag information read from the wireless tag T of the discarded medical instrument E to an external device (not shown).

[0019] The dust box 10 comprises an outer shell structural body 20 in which an inlet 21 is provided, a storage section 30 in which medical instruments and the like to be discarded are temporarily stored, a wireless tag reader 40 that reads tag information from the wireless tag T of the medical instrument E inserted through the inlet 21, and a radio wave absorbing section 50. Note that Fig. 1 illustrates the storage section 30 in a state before it is incorporated into the outer shell structural body 20, and for convenience, the wireless tag reader 40 and the mounting fixture 60 for attaching the wireless tag reader 40 inside the radio wave absorbing section 50 are not illustrated, and the main parts of the external shape of the radio wave absorbing section 50 are illustrated by two-dot chain lines.

[0020] The outer shell constituent body 20 includes four support pillars 22a to 22d that form the four corners, and a plurality of connecting pipes that connect the support pillars 22a to 22d in the front-rear and left-right directions. Casters (not shown) for portability can be attached to the lower end of each of the support pillars 22a to 22d.

[0021] In this embodiment, the connecting pipes used to connect each of the pillars 22a to 22d are two connecting pipes 23a, 23b on the front side, three connecting pipes 24a to 24c on the left side, three connecting pipes 25a to 25c on the right side, four connecting pipes 26a to 26d on the rear side, and three connecting pipes 27a to 27c on the upper side.

[0022] Connecting pipes 24a, 25a, 26a, 27a to 27c are connected to the respective supports 22a to 22d so as to extend along the horizontal plane at the upper level. Connecting pipes 23b, 24b, 25b, 26b are connected to the respective supports 22a to 22d so as to extend along the horizontal plane at the middle level. Connecting pipes 24c, 25c, 26c are connected to the respective supports 22a to 22d so as to extend along the horizontal plane at the lower level.

[0023] The insertion port 21 is made up of an area surrounded by the connecting pipe 27a, which is located most forward among the connecting pipes 27a to 27c, connecting pipe 24a, and connecting pipe 25a, and an area surrounded by connecting pipe 23a, support pillar 22a, and support pillar 22b.

[0024] The storage section 30 is a trash can made of resin with an upper opening and a bottom surface 31 formed in a substantially rectangular shape, and is formed in a size that allows access through an entrance / exit 28 on the front surface of the outer shell structure 20, which is formed by the connecting pipe 23b and the lower parts of the support columns 22a and 22b. Casters (not shown) for portability can be attached to the underside of the storage section 30.

[0025] The wireless tag reader 40 is mounted in the upper center of the outer casing structure 20, which is inside the radio wave absorbing section 50, using a mounting fixture 60 attached to the connecting pipes 27b and 27c, and is positioned so that it radiates radio waves from an antenna 41 attached to its underside toward the bottom surface 31 of the storage section 30. The wireless tag reader 40 has its radio wave output initially set so that it targets to read wireless tags T located near the bottom surface 31 of the storage section 30, but not wireless tags located far from the dust box 10, and is designed so that it cannot adjust its radio wave output inadvertently unless it receives a command to adjust the radio wave output from an external device.

[0026] The wireless tag reader 40 is configured to become capable of reading a wireless tag in response to an instruction from the external device, and to transmit the read tag information, etc. to the external device at a predetermined timing. Note that the wireless tag reader 40 may be configured to sequentially transmit the read tag information, etc. to the external device when it becomes capable of reading, without requiring an instruction from the external device.

[0027] The radio wave absorbing section 50 is configured by combining a plurality of radio wave absorbing panels for absorbing radio waves in a frequency band (for example, 920 MHz band) transmitted and received by the wireless tag reader 40. In this embodiment, in order to make it easy to grasp the storage status of the storage section 30, a transparent radio wave absorbing panel, specifically, for example, an RFID transparent radio wave absorbing and blocking panel manufactured by Sekisui Jushi Corporation, is used.

[0028] The radio wave absorbing section 50 in this embodiment covers a predetermined area above the storage section 30 (hereinafter also referred to as the radio wave leakage prevention area S1: see FIG. 3 etc.) from all four sides (front, back, left, right, and top) excluding the area that will be the insertion slot 21, thereby functioning to prevent the wireless tag reader 40 from reading wireless tags outside the outer structure 20. That is, the radio wave absorbing section 50 is disposed around the radio wave leakage prevention area S1, and the antenna 41 is disposed so as to wirelessly communicate with the radio tag T within the radio wave leakage prevention area S1. Therefore, the radio wave leakage prevention area S1 is included in the reading area of ​​the radio tag T by the radio tag reader 40. Note that in FIG. 3 and FIG. 5 described later, the radio wave leakage prevention area S1 is illustrated with cross-hatching for ease of explanation.

[0029] 4, the radio wave absorbing section 50 is configured by connecting a front radio wave absorbing panel 51, a left radio wave absorbing panel 52, a right radio wave absorbing panel 53, a rear radio wave absorbing panel 54, and an upper radio wave absorbing panel 55 so that their outer edges are adhesively fixed. The radio wave absorbing section 50 has an opening on the lower side facing the housing section 30, and this lower opening is formed into a rectangular shape by the lower edges of the radio wave absorbing panels 51 to 54. The radio wave absorbing panel 55 has a through-hole 55a formed therein through which the support part of the mounting fixture 60 passes.

[0030] The radio wave absorbing panel 51 is fixed to the front side of the exterior structural body 20 so as to cover from the inside the area surrounded by the support columns 22a and 22b and the connecting pipes 23a and 23b. The radio wave absorbing panel 52 is fixed to the left side of the exterior structural body 20 so as to cover from the inside the area surrounded by the support columns 22a and 22d and the connecting pipes 24a and 24b. The radio wave absorbing panel 53 is fixed to the right side of the exterior structural body 20 so as to cover from the inside the area surrounded by the support columns 22b and 22c and the connecting pipes 25a and 25b. The radio wave absorbing panel 54 is fixed to the rear side of the exterior structural body 20 so as to cover from the inside the area surrounded by the support columns 22c and 22d and the connecting pipes 26a and 26b. 2, after the radio wave absorbing panels have been bonded together, the radio wave absorbing section 50 is fixed by placing the lower edge of the radio wave absorbing panel 52 on the top of the connecting pipe 24b, and the lower edge of the radio wave absorbing panel 53 on the top of the connecting pipe 25b. Note that in this embodiment, the radio wave absorbing panel 55 is not fixed to the connecting pipes, but the present invention is not limited to this, and the radio wave absorbing panel 55 may be fixed to the upper side of the outer casing structure 20 so as to cover from the inside an area surrounded by the connecting pipes 24a and 25a and the connecting pipes 26a and 27a.

[0031] In this embodiment, the position of the upper edge of the radio wave absorbing panel 51 is set so as to make the insertion opening 21 wider while minimizing the leakage of radio waves radiated from the antenna 41 of the wireless tag reader 40 forward. Similarly, the position of the front edge of the radio wave absorbing panel 55 is set so as to make the insertion opening 21 wider while minimizing the leakage of radio waves radiated from the antenna 41 of the wireless tag reader 40 upward.

[0032] In this way, the radio wave absorbing section 50 is fixed to the outer shell structure 20 above the accommodation section 30 and excluding the slot 21. Therefore, the range consisting of the front space where the radio wave absorbing panel 51 of the radio wave absorbing section 50 is not provided and the upper space where the radio wave absorbing panel 55 is not provided almost coincides with the slot 21, and even if radio waves leak outward from the slot 21, the range of the radio wave leakage is limited to the area near the slot 21 (a range of about 5 cm from the slot 21).

[0033] Next, the reading area of ​​the RFID tag T by the RFID tag reader 40 in the dust box 10 configured as described above will be described with reference to Fig. 5. For ease of explanation, Fig. 5 omits the illustration of the support posts 22a, 22d, connecting pipes 24a to 24c, and radio wave absorbing panel 52 from the state in Fig. 3.

[0034] In the dust box 10 configured in this manner, when the wireless tag reader 40 reads the wireless tag T, radio waves from the antenna 41 are emitted from within the radio wave absorbing section 50 toward the bottom surface 31 of the storage section 30, so that the reading area of ​​the wireless tag T is limited almost entirely to within the outer casing structure 20 by the radio wave absorbing section 50.

[0035] More specifically, as shown in Figure 5, the reading area is limited to the above-mentioned radio wave leakage prevention area S1, an area near the slot 21 where radio wave leakage is limited (hereinafter also referred to as radio wave leakage limited area S2), and an area below the radio wave absorbing section 50 (hereinafter also referred to as the stored tag reading area S3).

[0036] Therefore, the medical instrument E inserted through the insertion port 21 for disposal passes through the radio wave leakage limited area S2 and the radio wave leakage prevention area S1, and then is stored in the storage section 30. At that time, the wireless tag T of the medical instrument E to be discarded is read by the wireless tag reader 40 in the radio wave leakage prevention area S1 or the radio wave leakage limited area S2. Even if reading of the wireless tag T fails in the radio wave leakage prevention area S1 or the radio wave leakage limited area S2, since the medical instrument E with the wireless tag T attached is stored in the storage section 30, it will be within the storage tag reading area S3, and therefore failure to read the wireless tag T of the discarded medical instrument E will be prevented.

[0037] On the other hand, since the radio wave leakage limited area S2 is limited to the area near the drop-in opening 21, even if an unused medical instrument E is carried near the dust box 10 (for example, about 1 m away from the drop-in opening 21), the tag information cannot be read from the wireless tag T attached to the unused medical instrument E.

[0038] Furthermore, the storage tag reading area S3 expands in the front-rear and left-right directions as it moves away from the lower opening of the radio wave absorber 50, but because the radio wave absorbing panels 51-54 that form the lower opening are each longer in the up-down direction, the expansion in the front-rear and left-right directions as described above is suppressed. Specifically, for example, near the floor on which the dust box 10 is placed, the storage tag reading area S3 is limited to a range of about 3 cm in the front-rear and left-right directions from a position corresponding to the side of the dust box 10.

[0039] Therefore, even if an unused medical instrument E is placed near the dust box 10 (for example, at a distance of about 1 m from the outer surface of the dust box 10), the tag information cannot be read from the wireless tag T attached to the unused medical instrument E.

[0040] As described above, in the dust box 10 of this embodiment, the medical instrument E inserted through the inlet 21 passes through the radio wave leakage prevention area S1 and is then stored in the storage section 30, the wireless tag reader 40 and antenna 41 are arranged so as to communicate with the wireless tag T within the radio wave leakage prevention area S1, and the radio wave absorbing section 50 is arranged around the radio wave leakage prevention area S1.

[0041] As a result, when a medical instrument E with an RFID tag T attached thereto passes through the radio wave leakage prevention area S1 when it is inserted through the insertion port 21, the tag information recorded on the RFID tag T can be read via the antenna 41, and the tag information read in this manner can be used to grasp the disposal status (insertion status) of the medical instruments E stored in the storage section 30. In particular, because the radio wave absorbing section 50 is disposed around the radio wave leakage prevention area S1, it is difficult for radio waves from the antenna 41 to reach RFID tags that do not pass through the radio wave leakage prevention area S1, such as the RFID tags T of medical instruments E that are carried near the dust box 10 as described above or the RFID tags T of medical instruments E that are placed near the dust box 10. Therefore, it is possible to realize a dust box 10 that can reliably read the RFID tags T of medical instruments E inserted through the insertion port 21, without reading the RFID tags of instruments that have not been inserted.

[0042] Furthermore, in this embodiment, the radio wave absorbing section 50 is configured to include a radio wave absorbing panel 55 arranged above the radio wave leakage prevention area S1, in addition to the front, rear, left, and right radio wave absorbing panels 51 to 54. This makes it possible to suppress radio wave leakage above the radio wave leakage prevention area S1 without interfering with the medical instruments E falling within the radio wave leakage prevention area S1, thereby further improving the effect of the radio wave absorbing section 50 in suppressing radio wave leakage from the radio wave leakage prevention area S1.

[0043] Furthermore, in this embodiment, the antenna 41 of the wireless tag reader 40 is disposed above the wireless tag leakage prevention area S1 within the wireless wave absorbing section 50 so as to radiate wireless waves toward the bottom surface 31 of the storage section 30. This allows both the wireless tag T passing through the wireless tag leakage prevention area S1 and the wireless tag T stored in the storage section 30 to be read without excessively increasing the wireless tag output from the antenna 41. This prevents the wireless tag T of the medical instrument E inserted through the insertion port 21 from being missed, thereby improving the reading accuracy of the wireless tag T of the medical instrument E. In particular, by disposing the wireless wave absorbing section 50 above the antenna 41, even if an article or the like having a wireless tag T attached thereto that is not scheduled to be discarded is placed on the upper surface of the outer casing structure 20 (the upper surface of the wireless wave absorbing panel 55), the wireless tag T is not read, thereby preventing an article that should not be read from being read.

[0044] The wireless tag reader 40 is not limited to being configured to be disposed inside the radio wave absorbing section 50, but may be configured so that at least the antenna 41 is disposed inside the radio wave absorbing section 50 and a main body portion and the like that is separate from the antenna 41 is disposed outside the radio wave absorbing section 50. Furthermore, the antenna 41 is not limited to being assembled to the upper center inside the outer casing 20 that is inside the radio wave absorbing section 50, but may be assembled, for example, near any one of the radio wave absorbing panels 52 to 54 at the upper part inside the outer casing 20 that is inside the radio wave absorbing section 50.

[0045] As a modified example of this embodiment, the radio wave absorbing section for suppressing radio wave leakage is not limited to being configured like radio wave absorbing section 50 in which radio wave leakage prevention area S1 is surrounded from all four sides (front, back, left, right) and above by a plurality of radio wave absorbing panels, but may also be configured so that a predetermined area corresponding to radio wave leakage prevention area S1 is surrounded from at least three of the four sides (front, back, left, right) by radio wave absorbing materials, depending on the surrounding environment, etc.

[0046] Specifically, for example, in an ambient environment where upward leakage of radio waves is not a priority, a radio wave absorbing section 50a illustrated in Fig. 6(A) may be employed as a radio wave absorbing section according to a first modified example for suppressing radio wave leakage. This radio wave absorbing section 50a is configured to surround a predetermined area corresponding to the radio wave leakage prevention area S1 from all four sides, front, back, left and right, using a front radio wave absorbing panel 51, a left radio wave absorbing panel 52, a right radio wave absorbing panel 53, and a rear radio wave absorbing panel 54.

[0047] Furthermore, for example, in an ambient environment where upward and forward leakage of radio waves is not a priority, the radio wave absorbing section 50b illustrated in Fig. 6(B) may be employed as the radio wave absorbing section according to the second modified example for suppressing radio wave leakage in order to ensure a wider insertion opening 21. This radio wave absorbing section 50b is configured to surround a predetermined area corresponding to the radio wave leakage prevention area S1 from three sides, namely the rear, left, and right, excluding the front, by a left radio wave absorbing panel 52, a right radio wave absorbing panel 53, and a rear radio wave absorbing panel 54.

[0048] The radio wave absorbing section for suppressing radio wave leakage is not limited to being formed so that the lower opening is rectangular as described above, but may be formed so that the lower opening is circular or elliptical to match the shape of the opening of the accommodating section 30, for example, when a accommodating section 30 or the like with a circular or elliptical opening is employed. In this case, the radio wave absorbing section may be formed so that it is annular when viewed from the accommodating section 30 side (below), or so that one of the front, rear, left, or right sides opens as the slot 21. For example, as in the radio wave absorbing section 50c illustrated in FIG. 7, it may be formed so that a part of the upper part and a part of the front part open as the slot 21.

[0049] The radio wave absorbing section for suppressing radio wave leakage is not limited to being configured to be arranged inside the external structure 20 as described above, but may be configured so that at least a part of it is arranged outside the external structure 20. Specifically, for example, the radio wave absorbing section may be configured so as to be fixed to the outside of the external structure 20 above the storage section 30 and excluding the insertion port 21.

[0050] The present invention is not limited to the above-described embodiment and modifications, and may be embodied as follows, for example. (1) The input item management device of the present invention is not limited to being applied to a dustbin 10 for acquiring information, etc., regarding the disposal status of disposable medical equipment E with a wireless tag T attached, but may also be applied, for example, to a device for acquiring information, etc., regarding the movement status (input status) of a moving item with a wireless tag T attached as it is input while moving, or to a device for acquiring information, etc., regarding the return status (input status) of a returned item with a wireless tag T attached.

[0051] (2) The outer shell structure 20 is not limited to being formed by the four support columns 22a to 22d and a plurality of connecting pipes such as the connecting pipe 23a, and may be formed, for example, by being surrounded on all four sides by thin plates, etc. In this case, a transparent material may be used as part of the thin plates, etc., so that the storage status of the storage section 30 can be easily grasped.

[0052] (3) The storage section 30 may be molded from a transparent resin material or the like so that the storage status can be easily seen, or similarly to the outer shell structure 20, the outer shell may be formed from supports and connecting pipes, and this outer shell may be used to hold a transparent bag for storing input items such as medical equipment E.

[0053] 10 Dust box (device for managing input items) 20 Outer structure 21 Inlet 30 Storage section 31 bottom 40 Wireless tag reader 41 Antenna 50, 50a, 50b, 50c Radio wave absorbing part E. Medical equipment (input items) S1 Radio wave leakage prevention area (specified area) T wireless tag

Claims

1. an outer shell structure into which an item with a wireless tag is inserted through an insertion port; a storage section disposed within the outer shell structure, in which the inserted item inserted through the insertion port is stored after passing through a predetermined area; an antenna arranged to communicate with the wireless tags within the predetermined area; a radio wave absorbing portion disposed around the predetermined area; An input item management device comprising:

2. The input item is a disposable medical device, 2. The input item management device according to claim 1, wherein the storage unit is a trash can for storing the medical instruments to be discarded.

3. 2. The input item management device according to claim 1, wherein the radio wave absorbing unit comprises radio wave absorbing panels arranged on at least three of the four sides (front, back, left, and right) surrounding the specified area.

4. 4. The input item management device according to claim 3, wherein the radio wave absorbing unit includes, in addition to the radio wave absorbing panels on the three sides, a radio wave absorbing panel disposed above the predetermined area.

5. 2. The input item management device according to claim 1, wherein the antenna is disposed above the predetermined area so as to radiate radio waves toward the bottom surface of the storage section.

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