JP7655068B2 - Sterilization control system - Google Patents

Description

This disclosure relates to a management system for sterilization objects.

One approach to sterilization validation of medical devices is the concept of parametric release. Parametric release refers to guaranteeing that a medical device has been sterilized based on records that prove that the process parameters of the sterilization process are within a predetermined tolerance range. Patent Document 1 discloses technology related to parametric release.

JP 2003-288413 A

There are many different types of medical devices. Therefore, in order to sterilize medical devices efficiently and appropriately, it is preferable to classify medical devices into families that can be sterilized using the same process parameters, and to sterilize them by family. However, medical facilities are busy, and there are only a limited number of people who can properly classify medical devices. As a result, there are cases where medical device classification is not properly performed in medical facilities.

The purpose of this disclosure is to provide technology that assists in the classification of items to be sterilized.

In accordance with the present disclosure, a management system for sterilization objects is provided that includes a registration database unit that stores registration data indicating the relationship between multiple sterilization objects to be sterilized in a sterilizer and the sterilization conditions for each of the multiple sterilization objects, a grouping unit that classifies the sterilization objects into families based on the registration data, and an output control unit that causes an output device to output the families classified by the grouping unit.

This disclosure provides technology that assists in the classification of items to be sterilized.

FIG. 1 is a diagram illustrating a management system for sterilization targets according to an embodiment of the present invention. FIG. 2 is a diagram showing a schematic diagram of a sterilizer according to an embodiment. FIG. 3 is a schematic diagram showing a method of storing the object to be sterilized in the processing space according to the embodiment. FIG. 4 is a perspective view showing the transporting platform vehicle according to the embodiment. FIG. 5 is a block diagram showing a management system for sterilization targets according to an embodiment. FIG. 6 is a flowchart showing a method for managing a sterilization target according to an embodiment. FIG. 7 is a diagram for explaining the registration data according to the embodiment. FIG. 8 is a diagram for explaining the process by the grouping unit according to the embodiment. FIG. 9 is a diagram illustrating an example of an output from the output device according to the embodiment. FIG. 10 is a diagram illustrating a state in which the identification device according to the embodiment is reading the identification number and the family number. FIG. 11 is a block diagram showing a computer system according to an embodiment.

Below, embodiments of the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the embodiments. The components of the embodiments described below can be combined as appropriate. Also, some components may not be used.

[Overview of the management system]
Fig. 1 is a schematic diagram showing a management system 1 for managing sterilization objects according to an embodiment. As shown in Fig. 1, the management system 1 includes an information terminal 2, a sterilizer 3, an identification device 4, and an alarm device 5.

The information terminal 2 includes a computer system. An example of the information terminal 2 is a personal computer. An example of the personal computer is a tablet personal computer or a notebook personal computer.

The sterilizer 3 sterilizes the sterilization target S. In the embodiment, the sterilizer 3 is a steam sterilizer. The steam sterilizer sterilizes the sterilization target S using steam. The sterilization target S is stored in the sterilizer 3 by the transport cart 6.

The identification device 4 identifies the sterilization target S stored in the sterilizer 3. Identification data is assigned to the sterilization target S. The identification device 4 identifies the sterilization target S by reading the identification data. In an embodiment, the identification device 4 is disposed in the sterilizer 3.

The notification device 5 notifies the user that the sterilization object S stored in the sterilizer 3 is not appropriate based on the identification result of the identification device 4. In the embodiment, the notification device 5 is disposed in the sterilizer 3.

The information terminal 2 and the sterilizer 3 can communicate with each other via a communication system 7. Examples of the communication system 7 include a local area network (LAN), the internet, or a mobile phone communication network.

[Sterilizer]
2 is a schematic diagram of a sterilizer 3 according to an embodiment. The sterilizer 3 includes a sterilization tank 8, a jacket 9, a jacket steam supply device 10, a jacket drain discharge device 11, a jacket exhaust device 12, a pressure reducing device 13, a pressure recovery device 14, a sterilization tank steam supply device 15, a sterilization tank drain discharge device 16, a sterilization tank exhaust device 17, a jacket pressure sensor 18, a sterilization tank pressure sensor 19, and a sterilization tank temperature sensor 20.

The sterilization tank 8 has a processing space 21 in which the sterilization target S is stored. The processing space 21 is the internal space of the sterilization tank 8. An entrance/exit is provided in a part of the sterilization tank 8. The entrance/exit of the sterilization tank 8 is opened and closed by a door (not shown). By opening the door, a user of the management system 1 can transport the sterilization target S into the processing space 21 or transport the sterilization target S out of the processing space 21 through the entrance/exit of the sterilization tank 8.

The jacket 9 is disposed around the sterilization tank 8. A jacket space 22 is formed between the sterilization tank 8 and the jacket 9.

The jacket steam supply device 10 supplies steam to the jacket space 22. The jacket steam supply device 10 has a jacket steam supply line 23 that connects a steam supply source (not shown) to the jacket space 22, and a jacket steam supply valve 24 arranged on the jacket steam supply line 23. Steam from the steam supply source is supplied to the jacket space 22 via the jacket steam supply line 23. The jacket steam supply device 10 can switch between supplying and stopping the supply of steam to the jacket space 22. The supply of steam to the jacket space 22 is switched between being supplied and being stopped by opening and closing the jacket steam supply valve 24.

The jacket drain discharge device 11 discharges drain generated in the jacket space 22 from the jacket space 22. The jacket drain discharge device 11 has a jacket drain discharge line 25 connected to the jacket space 22, and a steam trap 26 and a check valve 27 arranged in the jacket drain discharge line 25. The drain generated in the jacket space 22 is discharged from the jacket space 22 via the jacket drain discharge line 25.

The jacket exhaust device 12 exhausts gas from the jacket space 22. The jacket exhaust device 12 has a jacket exhaust line 28 connected to the jacket space 22, and a jacket exhaust valve 29 and a check valve 30 arranged in the jacket exhaust line 28. The gas in the jacket space 22 is exhausted from the jacket space 22 through the jacket exhaust line 28. When steam is supplied to the jacket space 22 with the jacket exhaust valve 29 open, the gas in the jacket space 22 is expelled from the jacket space 22 through the jacket exhaust line 28. In an embodiment, the jacket exhaust valve 29 is a temperature control valve that opens and closes based on the temperature of the gas passing through the jacket exhaust valve 29. The jacket exhaust valve 29 closes when the temperature of the gas passing through the jacket exhaust valve 29 becomes equal to or higher than the operating temperature.

The decompression device 13 exhausts gas from the processing space 21 to reduce the pressure of the processing space 21. The decompression device 13 has a vacuum line 31 connected to the processing space 21, and a vacuum valve 32, a vacuum pump 33, and a check valve 34 arranged in the vacuum line 31. When the vacuum pump 33 is driven, the gas in the processing space 21 is sucked by the vacuum pump 33 and exhausted from the processing space 21 via the vacuum line 31. The decompression device 13 can switch between reducing the pressure of the processing space 21 and stopping the decompression. When the vacuum pump 33 is switched between driving and stopping, the processing space 21 is switched between reducing the pressure and stopping the decompression.

The pressure recovery device 14 supplies outside air to the depressurized processing space 21 to restore the pressure in the processing space 21. The pressure recovery device 14 has an air supply line 35 connected to the processing space 21, and a sterile filter 36, an air supply valve 37, and a check valve 38 arranged in the air supply line 35. By opening the air supply valve 37 while the processing space 21 is in a depressurized state, outside air is supplied to the processing space 21 via the air supply line 35. The processing space 21 is restored to pressure by supplying outside air to the processing space 21 via the air supply line 35.

The sterilization tank steam supply device 15 supplies steam to the processing space 21. The sterilization tank steam supply device 15 has a sterilization tank steam supply line 39 that connects a steam supply source (not shown) to the processing space 21, and a sterilization tank steam supply valve 40 arranged on the sterilization tank steam supply line 39. Steam from the steam supply source is supplied to the processing space 21 via the sterilization tank steam supply line 39. The sterilization tank steam supply device 15 can switch between supplying and stopping the supply of steam to the processing space 21. The supply of steam to the processing space 21 is switched between being supplied and being stopped by opening and closing the sterilization tank steam supply valve 40.

The sterilization tank drain discharge device 16 discharges drain generated in the processing space 21 from the processing space 21. The sterilization tank drain discharge device 16 has a sterilization tank drain discharge line 41 connected to the processing space 21, and a steam trap 42 and a check valve 43 arranged in the sterilization tank drain discharge line 41. The drain generated in the processing space 21 is discharged from the processing space 21 via the sterilization tank drain discharge line 41.

The sterilization tank exhaust device 17 exhausts gas from the processing space 21. The sterilization tank exhaust device 17 has a sterilization tank exhaust line 44 connected to the processing space 21 via at least a portion of the sterilization tank drain discharge line 41, and a sterilization tank exhaust valve 45 and a check valve 46 arranged in the sterilization tank exhaust line 44. The gas in the processing space 21 is exhausted from the processing space 21 via at least a portion of the sterilization tank drain discharge line 41 and the sterilization tank exhaust line 44. When steam is supplied to the processing space 21 with the sterilization tank exhaust valve 45 open, the gas in the processing space 21 is expelled from the processing space 21 via at least a portion of the sterilization tank drain discharge line 41 and the sterilization tank exhaust line 44.

The downstream end of the vacuum line 31, the downstream end of the jacket exhaust line 28, and the downstream end of the sterilization tank exhaust line 44 are each connected to a first portion 41A of the sterilization tank drain discharge line 41. The downstream end of the jacket drain discharge line 25 is connected to a second portion 41B of the sterilization tank drain discharge line 41. The first portion 41A is defined downstream of the check valve 43. The second portion 41B is defined downstream of the first portion 41A. A check valve 47 is disposed in the sterilization tank drain discharge line 41 between the first portion 41A and the second portion 41B.

The jacket pressure sensor 18 detects the pressure in the jacket space 22.

The sterilization tank pressure sensor 19 detects the pressure in the processing space 21.

The sterilization tank temperature sensor 20 detects the temperature of the processing space 21.

Next, the operation of the sterilizer 3 will be described. In this embodiment, the sterilizer 3 performs an air removal process to remove air from the processing space 21, a sterilization process to sterilize the sterilization target S stored in the processing space 21, and a drying process to dry the sterilization target S. In addition, steam is supplied to the jacket space 22, and the jacket space 22 is heated.

Before air is removed from the processing space 21, the sterilization target S is placed in the processing space 21 by the transport cart 6. Also, before air is removed from the processing space 21, the air in the jacket space 22 is replaced with steam. When replacing the air in the jacket space 22 with steam, steam is supplied to the jacket space 22 by the jacket steam supply device 10, and gas is exhausted from the jacket space 22 by the jacket exhaust device 12. In an embodiment, steam is supplied to the jacket space 22 and air is pushed out of the jacket space 22 by opening the jacket steam supply valve 24 while the jacket exhaust valve 29 is open.

By supplying steam to the jacket space 22, the temperature of the jacket space 22 increases. Also, the temperature of the gas passing through the jacket exhaust valve 29 increases. When the temperature of the gas passing through the jacket exhaust valve 29 reaches or exceeds the operating temperature, the jacket exhaust valve 29 closes. Closing the jacket exhaust valve 29 stops the exhaust of gas from the jacket space 22 by the jacket exhaust device 12. With the exhaust of gas from the jacket space 22 stopped, steam is supplied to the jacket space 22 by the jacket steam supply device 10. Based on the detection result of the jacket pressure sensor 18, the supply of steam by the jacket steam supply device 10 is controlled so that the jacket space 22 maintains a constant pressure. Drain generated in the jacket space 22 is discharged from the jacket space 22 by the jacket drain discharge device 11.

After the jacket space 22 is filled with steam, the process of excluding air from the processing space 21 is started. When excluding air from the processing space 21, steam is supplied to the processing space 21 by the sterilization tank steam supply device 15 while the decompression by the decompression device 13 is stopped, and gas is exhausted from the processing space 21 by the sterilization tank exhaust device 17. In an embodiment, the sterilization tank steam supply valve 40 is opened while the sterilization tank exhaust valve 45 is open, so that steam is supplied to the processing space 21 and air is pushed out from the processing space 21. After the supply of steam by the sterilization tank steam supply device 15 and the exhaust of gas by the sterilization tank exhaust device 17 are completed, the processing space 21 is decompressed by the decompression device 13. In an embodiment, the vacuum valve 32 is opened while the sterilization tank steam supply valve 40 and the sterilization tank exhaust valve 45 are both closed, so that the processing space 21 is decompressed. After the decompression by the decompression device 13 is completed, steam is supplied to the processing space 21 by the sterilization tank steam supply device 15. Steam is supplied to the processing space 21 by the sterilization tank steam supply device 15 until the processing space 21 reaches atmospheric pressure, and then the processing space 21 is depressurized by the pressure reducing device 13. By repeating the depressurization of the processing space 21 and the supply of steam to the processing space 21 multiple times, air is removed from the processing space 21.

After the air has been removed from the processing space 21, the sterilization process of the sterilization object S begins. With the depressurization by the depressurization device 13 stopped, steam is supplied to the processing space 21 by the sterilization tank steam supply device 15. Based on the detection result of the sterilization tank temperature sensor 20, the supply of steam by the sterilization tank steam supply device 15 is controlled so that the processing space 21 is maintained at a specified sterilization temperature for a specified sterilization time. The processing space 21, in which the sterilization object S is stored, is filled with steam, and the sterilization object S is sterilized.

After the sterilization process of the sterilization object S is completed, the drying process of the sterilization object S is started. With the supply of steam by the sterilization tank steam supply device 15 stopped, the sterilization tank exhaust device 17 exhausts gas from the processing space 21. In the embodiment, the sterilization tank exhaust valve 45 opens with the sterilization tank steam supply valve 40 closed, thereby exhausting steam from the processing space 21. After the steam is exhausted from the processing space 21, the processing space 21 is depressurized by the depressurization device 13. The processing space 21 is depressurized, thereby drying the sterilization object S.

[Storage method]
Fig. 3 is a schematic diagram showing a method for storing the sterilization target S according to the embodiment in the processing space 21. Fig. 4 is a perspective view showing the transport cart 6 according to the embodiment.

The transport cart 6 has a wagon 48 that supports the sterilization object S and a stretcher 49 that transports the wagon 48.

The wagon 48 has a support 50, a shelf 51, and wheels 52. There are four support pillars 50. The shelf 51 supports the sterilization object S. The sterilization object S is placed on the shelf 51. The sterilization object S is placed on the shelf 51 while being contained in a packaging material such as a sterilization bag, nonwoven fabric, or sterilization container. Note that the sterilization object S may also be placed on the shelf 51 without being contained in a packaging material.

Multiple shelves 51 are provided at intervals in the vertical direction. Each shelf 51 has a shelf plate 53 and a water receiving plate 54 arranged below the shelf plate 53. The lowest shelf 51 does not have a water receiving plate 54. The shelf plate 53 has multiple through holes 55. The object S to be sterilized is placed on the shelf plate 53. The water receiving plate 54 receives condensed water from the shelf plate 53 or the object S to be sterilized. A pipe 56 is fixed to the support 50. The shelf plate 53 and the water receiving plate 54 are supported by the support 50 via the pipe 56.

The wheels 52 are attached to the lowest shelf 51. The wheels 52 rotate to allow the wagon 48 to move.

The stretcher 49 can move while supporting the wagon 48. The stretcher 49 has a base 57, wheels 58, and a handle 59. The base 57 supports the wagon 48. The wagon 48 is placed on the base 57. A guide rail 60 is provided on the base 57. The wheels 52 of the wagon 48 are guided by the guide rail 60. The wheels 58 are attached to the bottom of the base 57. The stretcher 49 can move by rotating the wheels 58. The handle 59 is held by a user of the management system 1. The user of the management system 1 can move the stretcher 49 by holding the handle 59.

The wagon 48 can move between the stretcher 49 and the sterilization tank 8. Guide rails 61 are provided at the bottom of the processing space 21. The wheels 52 of the wagon 48 are guided by the guide rails 61 after moving from the base 57 to the processing space 21. The sterilization target S is stored in the processing space 21 while being placed on the shelf 51 of the wagon 48.

[Management system functions]
FIG. 5 is a block diagram showing a management system 1 for a sterilization target S according to an embodiment.

The information terminal 2 has a control device 62, an input device 63, an output device 64, and a communication device 65.

The control device 62 includes a computer system.

The input device 63 is operated by a user of the management system 1. Examples of the input device 63 include a touch panel or a computer keyboard. The input device 63 generates an input signal when operated by the user of the management system 1. The input signal generated by the input device 63 is transmitted to the control device 62.

The output device 64 provides output data to a user of the management system 1. An example of the output device 64 is a display device. An example of the display device is a flat panel display. The output device 64 may also be an audio output device.

The communication device 65 communicates with the sterilizer 3 via the communication system 7.

The sterilizer 3 has a control device 66, a communication device 67, an identification device 4, and an alarm device 5.

The control device 66 includes a computer system.

The communication device 67 communicates with the information terminal 2 via the communication system 7.

The identification device 4 identifies the sterilization target S stored in the sterilizer 3. Identification data is assigned to the sterilization target S. The identification device 4 identifies the sterilization target S by reading the identification data. In an embodiment, the identification data includes an identification number assigned to the sterilization target S. A sheet or card on which the identification number is written is attached to the sterilization target S.

The identification device 4 also identifies the wagon 48 on which the sterilization target S is placed. Identification data is assigned to the wagon 48. The identification device 4 identifies the wagon 48 by reading the identification data. In an embodiment, the identification data includes a family number assigned to the wagon 48. A sheet or card on which the family number is written is attached to the wagon 48.

The identification device 4 includes a camera capable of reading the identification number and the family number. The identification device 4 identifies the sterilization object S by recognizing the identification number. The identification device 4 identifies the wagon 48 by recognizing the family number.

The identification data may be a barcode and the identification device 4 may be a barcode reader. The identification data may be written into an RF tag and the identification device 4 may be an RFID reader. The identification data may be written into an IC tag and the identification device 4 may be an IC tag reader.

The notification device 5 outputs notification data to notify the user that the sterilization object S stored in the sterilizer 3 is not appropriate based on the identification result of the identification device 4.

Examples of the notification device 5 include a display device, a lamp, and a buzzer. The display device displays display data as notification data. The lamp outputs light in a specified light emission pattern as the notification data. The buzzer outputs sound in a specified output pattern as the notification data. The notification device 5 may be provided in the information terminal 2.

The control device 62 has a registration database unit 68, a grouping unit 69, a recommended position determination unit 70, and an output control unit 71.

The registration database unit 68 stores registration data indicating the relationship between the multiple sterilization objects S to be sterilized in the sterilizer 3 and the sterilization conditions for each of the multiple sterilization objects. In an embodiment, the sterilization objects S include medical instruments. Recommended sterilization conditions for the sterilization objects S are determined in advance. The sterilization conditions include a sterilization temperature and a sterilization time. The recommended sterilization conditions are provided, for example, by a medical instrument manufacturer. The user of the management system 1 operates the input device 63 to input the multiple sterilization objects S and the sterilization conditions for each of the multiple sterilization objects S. The registration data indicating the relationship between the sterilization objects S and the sterilization conditions input by the user of the management system 1 is stored in the registration database unit 68.

The grouping unit 69 classifies the sterilization objects S into families based on the registration data stored in the registration database unit 68. In an embodiment, the grouping unit 69 classifies multiple sterilization objects S with the same sterilization conditions into one family.

The recommended position determination unit 70 determines the recommended position of the sterilization object S in the sterilizer 3 based on the prescribed rules. In the embodiment, the sterilization object S is placed on the wagon 48. The recommended position includes the recommended position of the sterilization object S on the wagon 48.

The prescribed rules include the weight of the sterilization object S. Rules regarding the recommended position of the sterilization object S are predefined so that a heavy sterilization object S is placed on the lower shelf 51 of the cart 48, a light sterilization object S is placed on the upper shelf 51 of the cart 48, and a sterilization object S of intermediate weight is placed on the middle shelf 51 of the cart 48.

The prescribed rules also include the type of packaging material that contains the sterilization object S. As described above, in the embodiment, the sterilization object includes a medical instrument. The packaging material includes a sterilization bag, a nonwoven fabric, and a sterilization container. Rules regarding the recommended position of the sterilization object S are predefined such that the sterilization object S contained in a sterilization bag is placed on the upper shelf 51 of the wagon 48, the sterilization object S contained in a nonwoven fabric is placed on the middle shelf 51 of the wagon 48, and the sterilization object S contained in a sterilization container is placed on the lower shelf 51 of the wagon 48.

The output control unit 71 causes the output device 64 to output the families classified by the grouping unit 69. The output control unit 71 also causes the output device 64 to output the recommended position of the sterilization target S determined by the recommended position determination unit 70.

The control device 66 has an identification data acquisition unit 72, a judgment unit 73, a notification control unit 74, a process control unit 75, and a process database unit 76.

The identification data acquisition unit 72 acquires the identification data of the identification device 4 that identifies the sterilization target S. The identification data acquisition unit 72 also acquires the identification data of the identification device 4 that identifies the wagon 48.

The determination unit 73 determines whether the sterilization object S is placed in a recommended position on the wagon 48 based on the identification data acquired by the identification data acquisition unit 72. The determination unit 73 also determines whether the sterilization object S belongs to a family classified by the grouping unit 69 based on the identification data acquired by the identification data acquisition unit 72. In the embodiment, multiple sterilization objects S constituting one family are placed on one wagon 48. The identification device 4 reads each of the family number assigned to the wagon 48 and the identification number assigned to the sterilization object S placed on the wagon 48. The determination unit 73 can determine whether the sterilization object S belongs to a family classified by the grouping unit 69 based on the identification data related to the family number and the identification data related to the identification number acquired by the identification data acquisition unit 72.

The notification control unit 74 causes the notification device 5 to notify that the sterilization object S is not placed in the recommended position based on the judgment result of the judgment unit 73. The notification control unit 74 also causes the notification device 5 to notify that the sterilization object S does not belong to a family based on the judgment result of the judgment unit 73. That is, when the judgment unit 73 judges that the sterilization object S is not placed in the recommended position based on the identification data acquired by the identification data acquisition unit 72, the notification control unit 74 causes the notification device 5 to notify that the sterilization object S is not placed in the recommended position. Also, when the judgment unit 73 judges that the sterilization object S does not belong to a family classified by the grouping unit 69 based on the identification data acquired by the identification data acquisition unit 72, the notification control unit 74 causes the notification device 5 to notify that the sterilization object S does not belong to a family.

The process control unit 75 controls the sterilizer 3 so that the sterilization objects S stored in the processing space 21 are sterilized under specified process conditions. The process conditions include process parameters that specify the sterilization process. The process parameters include the sterilization temperature and sterilization time. Multiple sterilization objects S that make up one family are stored together in the processing space 21 of the sterilization tank 8 and are sterilized simultaneously under specified process conditions by the sterilizer 3. Multiple sterilization objects S that make up one family are placed on one wagon 48 and are sterilized simultaneously under specified process conditions by the sterilizer 3.

The process database unit 76 stores process data indicating the relationship between the sterilization conditions of the multiple families sterilized in the sterilizer 3 and the process conditions of each of the multiple families. For each of the multiple families, process conditions that satisfy the sterilization conditions of the family are determined in advance. The process data indicating the relationship between the sterilization conditions of the family and the process conditions is stored in the process database unit 76.

The process control unit 75 controls the sterilizer 3 based on the sterilization conditions of the family stored in the processing space 21 and the process data stored in the process database unit 76 so that multiple sterilization objects constituting the family stored in the processing space 21 are sterilized simultaneously under the recommended process conditions.

[Management method]
6 is a flow chart showing a method for managing sterilization targets S according to an embodiment. A user of the management system 1 operates the input device 63 to input multiple sterilization targets S present in the medical field and the sterilization conditions for each of the multiple sterilization targets S. As described above, the recommended sterilization conditions are provided, for example, by a medical instrument manufacturer. The registration database unit 68 stores registration data indicating the relationship between the sterilization targets S and the sterilization conditions input by the input device 63 (step SA1).

Figure 7 is a diagram for explaining the registered data according to the embodiment. The registered data shows the relationship between multiple sterilization objects S present in the medical field and the sterilization conditions for each of the multiple sterilization objects S. The sterilization conditions include the sterilization temperature and sterilization time.

In the medical industry, multiple medical instruments are often sold or handled as a set. In the example shown in FIG. 7, the items to be sterilized S are the first to ninth operating sets and the first to sixth outpatient sets. One set includes, for example, multiple scalpels or forceps. Furthermore, the multiple medical instruments that make up one set are often sold or handled in a state where they are contained in a packaging member. In the example shown in FIG. 7, the packaging member includes a sterilization bag, a nonwoven fabric, and a sterilization container.

In the example shown in FIG. 7, the registered data indicates the relationship between the sterilization object S, the weight of the sterilization object S, the type of packaging material that contains the sterilization object S, the recommended sterilization temperature, and the recommended sterilization time.

The registered data may also include the structure and material of the sterilization object S.

A user of the management system 1 inputs the weight, type of packaging material, recommended sterilization temperature, and recommended sterilization time for each of multiple sterilization objects S present in the medical field through the input device 63. The registration database unit 68 stores registration data indicating the relationship between the sterilization objects S, weight, type of packaging material, recommended sterilization temperature, and recommended sterilization time input through the input device 63.

Note that the registered data shown in Figure 7 is an example. There are many different types of sterilization targets S in medical settings.

The grouping unit 69 classifies the sterilization objects S into families based on the registration data stored in the registration database unit 68 (step SA2).

Figure 8 is a diagram for explaining the processing by the grouping unit 69 according to the embodiment. The grouping unit 69 classifies multiple sterilization objects S with the same sterilization conditions into one family. In the example shown in Figure 8, multiple sterilization objects S are classified into a first family, a second family, and a third family. The sterilization temperature of the sterilization objects S belonging to the first family is 132°C and the sterilization time is 10 minutes. The sterilization temperature of the sterilization objects S belonging to the second family is 121°C and the sterilization time is 18 minutes. The sterilization temperature of the sterilization objects S belonging to the third family is 135°C and the sterilization time is 3 minutes.

The recommended position determination unit 70 determines the recommended position of the sterilization object S in the sterilizer 3 based on the specified rules (step SA3).

The output control unit 71 causes the output device 64 to output the families classified by the grouping unit 69. The output control unit 71 also causes the output device 64 to output the recommended position of the sterilization target S determined by the recommended position determination unit 70 (step SA4).

Figure 9 is a diagram showing an example of output from the output device 64 according to the embodiment. In Figure 9, the output device 64 is a display device included in the information terminal 2.

As shown in FIG. 9, the output control unit 71 causes the family classified by the grouping unit 69 to be displayed on the display device of the information terminal 2. In the example shown in FIG. 9, the output control unit 71 causes the first family classified by the grouping unit 69 to be displayed on the display device of the information terminal 2. In the example shown in FIG. 9, a list of multiple sterilization targets S belonging to the first family is displayed on the display device of the information terminal 2.

The output control unit 71 also displays the recommended position of the sterilization object S determined by the recommended position determination unit 70 on the display device of the information terminal 2. In the embodiment, the recommended position includes a recommended placement position of the sterilization object S on the wagon 48. As described above, the recommended position determination unit 70 determines the recommended position of the sterilization object S in the sterilizer 3 based on the specified rules. The specified rules include the weight of the sterilization object S and the type of packaging material.

In the embodiment, the prescribed rule specifies that the sterilization object S having a large weight is placed on the lower shelf 51 of the wagon 48, the sterilization object S having a small weight is placed on the upper shelf 51 of the wagon 48, and the sterilization object S having an intermediate weight is placed on the middle shelf 51 of the wagon 48. The prescribed rule also specifies that the sterilization object S contained in a sterilization container is placed on the lower shelf 51 of the wagon 48, the sterilization object S contained in a nonwoven fabric is placed on the middle shelf 51 of the wagon 48, and the sterilization object S contained in a sterilization bag is placed on the upper shelf 51 of the wagon 48.

The recommended position determination unit 70 determines the recommended position of the sterilization object S on the cart 48 based on prescribed rules, taking into consideration the size of the shelf 51, the number of items to be sterilized S, the size of the packaging material, etc.

In an embodiment, as shown in FIG. 9, the output control unit 71 causes the display device of the information terminal 2 to display a list of sterilization objects S to be placed on the lower shelf 51 of the cart 48, a list of sterilization objects S to be placed on the middle shelf 51 of the cart 48, and a list of sterilization objects S to be placed on the upper shelf 51 of the cart 48. In the example shown in FIG. 9, the output control unit 71 causes the display device of the information terminal 2 to display a message saying, "The following are medical instruments belonging to [first family]. Please place them on the cart as follows."

The user of the management system 1 places the sterilization objects S on the cart 48 according to the output data displayed on the display device of the information terminal 2 as shown in FIG. 9. That is, the user of the management system 1 places multiple sterilization objects S belonging to a first family with the same sterilization conditions on one cart 48. The user of the management system 1 also places the sterilization objects S on the shelves 51 of the cart 48 so that the sterilization objects S are placed in the recommended positions.

Each of the multiple sterilization objects S placed on the wagon 48 is assigned an identification number to identify the sterilization object S. In addition, the wagon 48 on which the sterilization objects S of the first family are placed is assigned a family number to identify the family. In the embodiment, the wagon 48 is assigned a first family number indicating that the sterilization objects S of the first family are placed on the wagon 48.

The family classified in step SA2 and the recommended position determined in step SA3 are transmitted from the information terminal 2 to the sterilizer 3 via the communication system 7. The control device 66 of the sterilizer 3 acquires the family and the recommended position transmitted from the information terminal 2. In an embodiment, the information terminal 2 transmits the sterilization conditions of the first family, the sterilization object S belonging to the first family, and the recommended position of the sterilization object S to the sterilizer 3. The control device 66 of the sterilizer 3 acquires the sterilization conditions of the first family, the sterilization object S belonging to the first family, and the recommended position of the sterilization object S transmitted from the information terminal 2 (step SB1).

The process control unit 75 determines process conditions that satisfy the sterilization conditions of the first family stored in the processing space 21 based on the sterilization conditions of the first family transmitted from the information terminal 2 and the process data stored in the process database unit 76 (step SB2).

The user of the management system 1 transports the transport cart 6 carrying the sterilization object S of the first family to the sterilizer 3. The identification device 4 reads the identification number attached to the sterilization object S and the family number attached to the cart 48 before the cart 48 is stored in the processing space 21.

Figure 10 is a schematic diagram showing the state in which the identification device 4 according to the embodiment is reading the identification number and family number. In the example shown in Figure 10, sterilization objects S with identification numbers "A-1", "A-2", "A-3", and "A-7" are placed on the lower shelf 51. Sterilization objects S with identification numbers "A-4", "A-5", and "A-6" are placed on the middle shelf 51. Sterilization objects S with identification numbers "A-8", "A-9", and "A-10" are placed on the upper shelf 51. In addition, the wagon 48 is assigned a family number "A" indicating that the family of the sterilization objects S placed on the wagon 48 is the first family.

Figure 10 shows an example in which the sterilization objects S stored in the processing space 21 are appropriate. That is, in the example shown in Figure 10, all of the sterilization objects S placed on the wagon 48 belong to the first family, and all of the sterilization objects S are placed in the recommended positions.

Before the wagon 48 is stored in the processing space 21, the identification device 4 reads the identification number attached to the sterilization object S and the family number attached to the wagon 48. The identification data acquisition unit 72 acquires identification data identifying the sterilization object S and identification data identifying the wagon 48. The identification data identifying the sterilization object S includes the identification number. The identification data identifying the wagon 48 includes the family number (step SB3).

Based on the identification data acquired by the identification data acquisition unit 72, the judgment unit 73 judges whether or not all of the sterilization objects S placed on the wagon 48 belong to the first family classified by the grouping unit 69 (step SB4).

If it is determined in step SB4 that all of the sterilization objects S placed on the wagon 48 belong to the first family (step SB4: Yes), the determination unit 73 determines whether the sterilization objects S are placed in the recommended positions on the wagon 48 based on the identification data acquired by the identification data acquisition unit 72 (step SB5).

In step SB5, if it is determined whether the sterilization target S is placed in the recommended position on the wagon 48 (step SB5: Yes), after the wagon 48 is stored in the processing space 21, the process control unit 75 starts the sterilization process of the sterilization target S placed in the processing space 21 (step SB6).

As mentioned above, air is removed from the processing space 21 before the sterilization process begins.

If it is determined in step SB4 that at least one of the sterilization objects S placed on the wagon 48 does not belong to the first family (step SB4: No), the notification control unit 74 causes the notification device 5 to notify that at least one of the sterilization objects S placed on the wagon 48 does not belong to the first family (step SB7).

For example, if a sterilization object S of the second or third family has been mixed in with the wagon 48, notification data is output from the notification device 5. The user of the management system 1 can recognize that an inappropriate sterilization object S has been placed on the wagon 48. The user of the management system 1 can reload the sterilization objects S so that all of the sterilization objects S placed on the wagon 48 are sterilization objects S belonging to the first family. After the sterilization objects S have been reloaded, the process returns to step SB3.

If it is determined in step SB5 that at least one of the sterilization objects S is not placed in the recommended position (step SB5: No), the notification control unit 74 causes the notification device 5 to notify that the sterilization object S is not placed in the recommended position (step SB8).

For example, when a sterilization object S with identification number "A-8" is placed on the lower shelf 51 of the cart 48, notification data is output from the notification device 5. The user of the management system 1 can recognize that the sterilization object S is not placed in the recommended position. The user of the management system 1 can rearrange the sterilization objects S so that all of the sterilization objects S are placed in the recommended positions. After the sterilization objects S have been rearranged, the process returns to step SB3.

[Computer System]
FIG. 11 is a block diagram showing a computer system 1000 according to an embodiment. Each of the above-mentioned control devices 62 and 66 includes a computer system 1000. The computer system 1000 has a processor 1001 such as a central processing unit (CPU), a main memory 1002 including a non-volatile memory such as a read only memory (ROM) and a volatile memory such as a random access memory (RAM), a storage 1003, and an interface 1004 including an input/output circuit. The functions of the control devices 62 and 66 are stored in the storage 1003 as a program. The processor 1001 reads the program from the storage 1003, expands it in the main memory 1002, and executes the above-mentioned processing according to the program. The program may be distributed to the computer system 1000 via a network.

[effect]
As described above, the management system 1 for sterilization objects S according to the embodiment includes a registration database unit 68 that stores registration data indicating the relationship between multiple sterilization objects S to be sterilized in the sterilizer 3 and the sterilization conditions for each of the multiple sterilization objects S, a grouping unit 69 that classifies the sterilization objects S into families based on the registration data, and an output control unit 71 that causes the output device 64 to output the families classified by the grouping unit 69. The grouping unit 69 classifies the sterilization objects S into families that can be sterilized with the same process parameters. The families classified by the grouping unit 69 are output to the output device 64, allowing a user of the management system 1 to appropriately classify the sterilization objects S while checking the output device 64. The management system 1 can support a user who performs the task of classifying the sterilization objects S.

The grouping unit 69 classifies multiple sterilization objects S that have the same sterilization conditions into one family. This allows the sterilization objects S to be properly classified and sterilized efficiently and appropriately.

The sterilization objects S that make up a family are sterilized simultaneously under specified process conditions by the sterilizer 3. This allows the sterilization objects S to be sterilized efficiently and appropriately.

In an embodiment, the management system 1 includes a recommended position determination unit 70 that determines a recommended position for the sterilization object S in the sterilizer 3 based on prescribed rules. The output control unit 71 outputs the recommended position to the output device 64. This allows a user of the management system 1 to place the sterilization object S in the recommended position while checking the output device 64.

In the embodiment, the sterilization object S includes a medical instrument. The prescribed rules include the weight of the sterilization object S and the type of packaging material that contains the sterilization object S. For example, the sterilization object S that is heavier is placed at the bottom, or a packaging material that can suppress the intrusion of condensed water generated in the processing space 21 is placed at the bottom, so that the sterilization object S can be sterilized efficiently and appropriately.

The management system 1 includes an identification data acquisition unit 72 that acquires identification data from an identification device 4 that identifies the sterilization object S, a determination unit 73 that determines whether or not the sterilization object S is placed in a recommended position based on the identification data, and a notification control unit 74 that causes the notification device 5 to notify that the sterilization object S is not placed in the recommended position based on the determination result of the determination unit 73. As a result, when the sterilization object S is not placed in the recommended position, the user of the management system 1 can recognize that the sterilization object S is not placed in the recommended position by the notification from the notification device 5. The user of the management system 1 can reload the sterilization objects S so that all of the sterilization objects S are placed in the recommended positions.

The management system 1 includes an identification data acquisition unit 72 that acquires the identification data of the identification device 4 that identifies the sterilization object S, a judgment unit 73 that judges whether the sterilization object S belongs to a family classified by the grouping unit 69 based on the identification data, and a notification control unit 74 that causes the notification device 5 to notify that the sterilization object S does not belong to a family based on the judgment result of the judgment unit 73. As a result, when a sterilization object S of the second or third family is mixed in with the first family, for example, the user of the management system 1 can recognize from the notification of the notification device 5 that a sterilization object S of another family has been mixed in with the family to be brought into the sterilizer 3. The user of the management system 1 can reload the sterilization objects S so that all the sterilization objects S to be brought into the sterilizer 3 belong to one family.

[Other embodiments]
In the above embodiment, the transport cart 6 has a wagon 48 that supports the sterilization target S, and a stretcher 49 that moves the wagon 48. Also, the wagon 48 separated from the stretcher 49 is stored in the processing space 21 while supporting the sterilization target S. The wagon 48 and the stretcher 49 may not be separated, and the transport cart 6 may be stored in the processing space 21 while supporting the sterilization target S. Also, when the transport cart 6 is stored in the processing space 21 while supporting the sterilization target S, a guide rail for guiding the wheels of the transport cart 6 may or may not be provided in the processing space 21.

The stretcher 49 may also be omitted. A wagon 48 supporting the sterilization object S may be brought into the processing space 21 by any transport method. When bringing the wagon 48 into the processing space 21, for example, the wagon 48 may be brought into the processing space 21 using a portable guide rail.

The sterilization object S may also be stored in the processing space 21 without using the cart 48. For example, if a shelf is provided in the processing space 21, the user of the management system 1 may place the sterilization object S on the shelf in the processing space 21. The identification device 4 may also recognize the sterilization object S after the sterilization object S is stored in the processing space 21. For example, the identification device 4 may be placed in a position where it can recognize the inside of the processing space 21, and after the sterilization object S is placed on the shelf in the processing space 21, the identification device 4 may recognize the sterilization object S stored in the processing space 21. After the sterilization object S is stored in the processing space 21, the determination unit 73 can determine whether the sterilization object S belongs to a family classified by the grouping unit 69, or whether the sterilization object S is placed in a recommended position on the shelf in the processing space 21.

In the above embodiment, the identification device 4 and the notification device 5 are each provided in the sterilizer 3. One or both of the identification device 4 and the notification device 5 may be provided outside the sterilizer 3. When the sterilizer 3 and the identification device 4 are provided separately, the information terminal 2, the sterilizer 3, and the identification device 4 may communicate with each other via the communication system 7. When the sterilizer 3 and the notification device 5 are provided separately, the information terminal 2, the sterilizer 3, and the notification device 5 may communicate with each other via the communication system 7.

In the above-described embodiment, some or all of the functions of the control device 66 may be provided in the information terminal 2. For example, the identification data acquisition unit 72, judgment unit 73, and notification control unit 74 of the control device 66 may be provided in the control device 62 of the information terminal 2. Also, some or all of the functions of the control device 62 may be provided in the sterilizer 3. For example, the registration database unit 68, grouping unit 69, recommended position determination unit 70, and output control unit 71 of the control device 62 may be provided in the control device 66 of the sterilizer 3.

In the above-described embodiment, the functions of the registration database unit 68, the grouping unit 69, the recommended position determination unit 70, the output control unit 71, the identification data acquisition unit 72, the judgment unit 73, the notification control unit 74, the process control unit 75, and the process database unit 76 may be performed by separate hardware.

1...Management system, 2...Information terminal, 3...Sterilizer, 4...Identification device, 5...Alarm device, 6...Transport cart, 7...Communication system, 8...Sterilization tank, 9...Jacket, 10...Jacket steam supply device, 11...Jacket drain discharge device, 12...Jacket exhaust device, 13...Decompression device, 14...Pressure recovery device, 15...Sterilization tank steam supply device, 16...Sterilization tank drain discharge device, 17...Sterilization tank exhaust device, 18...Jacket pressure sensor, 19...Sterilization tank pressure sensor, 20...Sterilization tank temperature sensor, 21 ...treatment space, 22...jacket space, 23...jacket steam supply line, 24...jacket steam supply valve, 25...jacket drain discharge line, 26...steam trap, 27...check valve, 28...jacket exhaust line, 29...jacket exhaust valve, 30...check valve, 31...vacuum line, 32...vacuum valve, 33...vacuum pump, 34...check valve, 35...air supply line, 36...sterile filter, 37...air supply valve, 38...check valve, 39...sterilization tank steam supply line, 40...sterilization tank steam supply valve, 41... Sterilization tank drain discharge line, 41A...first part, 41B...second part, 42...steam trap, 43...check valve, 44...sterilization tank exhaust line, 45...sterilization tank exhaust valve, 46...check valve, 47...check valve, 48...wagon, 49...stretcher, 50...support, 51...shelf, 52...wheels, 53...shelf board, 54...water receiving plate, 55...through hole, 56...pipe, 57...base, 58...wheels, 59...handle, 60...guide rail, 61...guide rail, 62...control device, 63...input device, 64...output device, 65...communication device, 66...control device, 67...communication device, 68...registration database unit, 69...grouping unit, 70...recommended position determination unit, 71...output control unit, 72...identification data acquisition unit, 73...determination unit, 74...alert control unit, 75...process control unit, 76...process database unit, 1000...computer system, 1001...processor, 1002...main memory, 1003...storage, 1004...interface, S...sterilization target.

Claims (4)

a registration database unit that stores registration data indicating a relationship between a plurality of sterilization objects including medical instruments to be sterilized in a sterilizer and sterilization conditions for each of the plurality of sterilization objects;
a grouping unit for classifying the sterilization objects into families based on the registration data;
a recommended position determination unit that determines a recommended position of the object to be sterilized in the sterilizer based on a prescribed rule including at least one of the weight of the object to be sterilized and the type of packaging material that contains the object to be sterilized;
an output control unit that outputs the family classified by the grouping unit and the recommended location to an output device,
A system for managing sterilization items. The grouping unit classifies a plurality of the sterilization objects having the same sterilization conditions into one family,
The sterilization objects constituting the family are sterilized simultaneously under specified process conditions by the sterilizer.
The system for managing objects to be sterilized according to claim 1 . an identification data acquisition unit that acquires identification data of an identification device that identifies the object to be sterilized;
a determination unit that determines whether the sterilization object is placed in the recommended position based on the identification data;
and a notification control unit that causes a notification device to notify that the sterilization object is not placed in the recommended position based on a determination result of the determination unit.
The management system for objects to be sterilized according to claim 1 or 2 . an identification data acquisition unit that acquires identification data of an identification device that identifies the object to be sterilized;
a determination unit that determines whether the sterilization object belongs to the family classified by the grouping unit based on the identification data;
and a notification control unit that causes a notification device to notify that the sterilization object does not belong to the family based on the determination result of the determination unit.
The management system for objects to be sterilized according to claim 1 or 2 .

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