Ethylene oxide sterilization effect detection device

Abstract

This invention discloses an ethylene oxide sterilization effect testing device, relating to the field of microbial sterilization testing technology. It includes an ethylene oxide sterilization chamber and a movable frame. A connecting pipe that mates with an extension tube is fixed on the movable frame. Each extension block is equipped with a locking component axially corresponding to a locking sleeve. Each clamping component is equipped with a clamping plate. A rotatable guide cylinder, sleeved outside the inner tube, is rotatably mounted on a branch pipe. Lateral holes II and I are respectively provided on the side walls of the rotatable guide cylinder and the inner tube. This invention enables rapid and reliable docking and locking of the extension tube and connecting pipe via the locking components, allowing for a closed docking of the ethylene oxide sterilization chamber and the connecting pipe. The clamping components drive the clamping plate to place a test bottle containing a biological indicator inside the ethylene oxide sterilization chamber. The test bottle can move freely relative to the connecting pipe, greatly facilitating the free adjustment of the ethylene oxide sterilization effect testing area and improving the accuracy of sterilization effect testing.

Description

Technical Field

[0001] This invention relates to the field of microbial sterilization detection technology, specifically a device for detecting the sterilization effect of ethylene oxide. Background Technology

[0002] Ethylene oxide sterilization is currently the mainstream low-temperature sterilization method for medical consumables and precision medical devices. Relying on the strong penetrability and broad-spectrum bactericidal properties of ethylene oxide, it can effectively kill various microorganisms such as bacteria, fungi, viruses, and spores. It is thorough and widely applicable. Ethylene oxide sterilization has advantages such as strong sterilization stability, high batch processing efficiency, and no corrosive damage to products. It is widely used in the fields of pharmaceuticals, medical care, hygiene protection, and biological products. With its safe and reliable sterilization effect, it has become an indispensable core sterilization process in the production and processing of sterile products.

[0003] When testing the sterilization effect of ethylene oxide, Bacillus subtilis var. niger spores are placed in a test bottle as a biological indicator. The test bottle is then placed in an ethylene oxide sterilization chamber for simultaneous sterilization with the product. After sterilization, the biological indicator is removed and cultured. A clear, unturbid, and colorless culture indicates complete spore destruction, while turbidity or yellowing indicates poor sterilization. Current testing devices cannot interface well with ethylene oxide sterilization chambers, and the test bottle containing the biological indicator cannot enter the chamber in a relatively sealed state. This results in poor accuracy and operability in sterilization effect testing, making it difficult to meet practical testing needs. To address these technical deficiencies, an ethylene oxide sterilization effect testing device is provided to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide an ethylene oxide sterilization effect testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An ethylene oxide sterilization effect testing device includes an ethylene oxide sterilization chamber and a movable frame. An extension tube is installed on the ethylene oxide sterilization chamber. A connecting pipe that mates with the extension tube is fixed on the movable frame. An extension platform is fixed to the end of the extension tube. A locking collar is threaded onto the connecting pipe. Several circumferentially distributed extension blocks are fixed on the connecting pipe. Each extension block is equipped with a locking component axially corresponding to the locking collar. The locking component is used to lock the extension tube and the connecting pipe together. A guide tube is slidably installed inside the connecting pipe. An adjusting tube slidably passes through the guide tube. A pair of clamping components are installed between the adjusting tube and the guide tube. Each clamping component is equipped with a clamping plate. A branch tube is fixed on the connecting pipe. An inner tube is fixed inside the branch tube. A steering cylinder, sleeved outside the inner tube, is rotatably installed on the branch tube. Lateral holes II and I are respectively opened on the side walls of the steering cylinder and the inner tube.

[0007] As an improvement of the present invention: the clamping assembly includes a pull rod rotatably mounted on the side wall of the guide tube, and parallel and equal-length connecting rods I and II are rotatably mounted on the side wall of the adjusting tube. A clamping arm is hinged to the end of the connecting rods I and II away from the adjusting tube, and a clamping plate is fixed to the end of the clamping arm.

[0008] As an improvement of the present invention: the clamping assembly further includes a sliding frame connected to the connecting tube, the guide tube is fixedly installed on the sliding frame, a threaded column is rotatably installed on the sliding frame, and a connecting plate fixed to the end of the adjusting tube is threadedly sleeved on the threaded column.

[0009] As an improvement of the present invention: a plurality of trapezoidal clamping blocks are slidably installed radially inside the inner tube, and radial columns fixed to the inner tube are slidably installed inside the trapezoidal clamping blocks. A connecting spring is fixed between the radial columns and the trapezoidal clamping blocks.

[0010] As an improvement of the present invention: a side block is fixed to the side wall of the steering cylinder, a triangular block is slidably installed on the side block, a push spring is fixed between the triangular block and the side block, and two V-grooves that are adapted to engage with the triangular block are opened on the branch pipe.

[0011] As an improvement of the present invention: a vertical rod is vertically slidably installed inside the steering cylinder, a top plate is fixed to the top of the vertical rod, and a push plate is fixed to the bottom of the vertical rod.

[0012] As an improvement of the present invention: the locking assembly includes a locking frame rotatably mounted on the extension block, a locking part fixed at the end of the locking frame, a push block corresponding to the locking frame slidably mounted on the extension block, the push block being axially corresponding to the locking sleeve, a connecting spring being fixed between the push block and the extension block, and a mating groove adapted to the insertion of the extension block being provided on the extension platform.

[0013] As an improvement of the present invention: a guide frame is fixed inside the ethylene oxide sterilization chamber, and the sealing lifting door is vertically slidably installed on the guide frame. The sealing lifting door is used to seal the end of the extension tube away from the connecting tube.

[0014] As an improvement of the present invention: a servo motor is fixed on the connecting pipe, a main gear is coaxially fixed on the output shaft of the servo motor, and a rack that meshes with the main gear is fixed on the sliding frame.

[0015] As an improvement of the present invention: a rotating door is rotatably installed at the bottom of the connecting pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention enables the extension tube and the connecting tube to be quickly and reliably connected and locked by a locking assembly, allowing the ethylene oxide sterilization chamber and the connecting tube to be connected in a closed manner. The clamping assembly drives the clamping tray to place the test bottle containing the biological indicator inside the ethylene oxide sterilization chamber. The test bottle can move freely relative to the connecting tube, which greatly facilitates the free adjustment of the ethylene oxide sterilization effect detection area and improves the accuracy of sterilization effect detection.

[0018] 2. In this invention, the test bottle containing the biological indicator can enter the inner tube through the side hole II on the steering cylinder. The test bottle is initially supported by the trapezoidal clamping block. The top plate and vertical rod drive the push plate to push the test bottle, allowing it to slide relative to the branch tube and extend to the clamping tray for clamping. The test bottle can be quickly placed using the small-area side holes I and II. The operation is simple and avoids the frequent opening of the ethylene oxide sterilization chamber, improving the accuracy of the test and the convenience of operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 A diagram from a particular perspective;

[0021] Figure 3 This is a partial structural diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the clamping component in the present invention;

[0023] Figure 5 This is a partial exploded view of the structure of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of region A in the middle;

[0025] Figure 7 This is a schematic diagram showing the connection of components such as branch pipe, steering cylinder, inner pipe and top plate in this invention;

[0026] Figure 8 This is a schematic diagram showing the connection of components such as the side block, the pushing spring, and the triangular block in this invention;

[0027] Figure 9 For the present invention Figure 7 A schematic diagram of the structural connections from a certain perspective;

[0028] Figure 10 This is a schematic diagram showing the connection between the radial column, the connecting spring, and the trapezoidal clamping block in this invention.

[0029] In the diagram: 1-Ethylene oxide sterilization chamber, 2-Connecting pipe, 3-Branch pipe, 4-Guide pipe, 5-V groove, 6-Extension pipe, 7-Locking collar, 8-Moving frame, 9-Sliding frame, 10-Main gear, 11-Rack, 12-Adjusting pipe, 13-Threaded column, 14-Connecting plate, 15-Top plate, 16-Vertical rod, 17-Driving cylinder, 18-Clamping support plate, 19-Clamping arm, 20-Guide frame, 21-Pull rod, 22-Connecting rod I, 23-UV lamp, 24- 25-Sealed lifting door, 26-Locking frame, 27-Extension block, 28-Push block, 29-Locking part, 30-Inner tube, 31-Side hole I, 32-Side hole II, 33-Push plate, 34-Trapezoidal clamping block, 35-Radial column, 36-Connecting spring, 37-Servo motor, 38-Extension platform, 39-Docking groove, 40-Connecting rod II, 41-Triangular block, 42-Side block, 43-Push spring, 44-Horizontal connecting spring, 45-Rotating door. Detailed Implementation

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] First embodiment: Please refer to the appendix Figure 1 - Appendix Figure 10 An ethylene oxide sterilization effect testing device includes an ethylene oxide sterilization chamber 1 and a movable frame 8. An extension tube 6 is installed on the ethylene oxide sterilization chamber 1. A connecting pipe 2, which mates with the extension tube 6, is fixed on the movable frame 8. An extension platform 38 is fixed to the end of the extension tube 6. A locking collar 7 is threaded onto the connecting pipe 2. Several circumferentially distributed extension blocks 27 are fixed on the connecting pipe 2. Each extension block 27 is equipped with a locking component axially corresponding to the locking collar 7. The locking components are used to lock the extension tube 6 and the connecting pipe 2 tightly together. A guide tube 4 is slidably installed inside the connecting pipe 2. An adjusting tube 12 is slidably passed through the guide tube 4. A pair of clamping components are installed between the adjusting tube 12 and the guide tube 4. Each clamping component is equipped with a clamping plate 18. A branch pipe 3 is fixed on the connecting pipe 2. An inner tube 30 is fixed inside the branch pipe 3. A steering cylinder 17 is rotatably installed on the branch pipe 3 and sleeved outside the inner tube 30. The side walls of the steering cylinder 17 and the inner tube 30 are respectively provided with a lateral hole II32 and a lateral hole I31. A rotating door 45 is rotatably installed at the bottom of the connecting pipe 2.

[0032] When testing the sterilization effect of the ethylene oxide sterilization chamber 1 using this device, a test bottle containing a biological indicator is placed inside the ethylene oxide sterilization chamber 1 along with the items to be sterilized. After sterilization, the chamber is sealed and placed in a constant temperature incubator for 7 consecutive days. The color and turbidity of the culture medium are observed. If the culture medium is clear without discoloration or turbidity, it indicates that all spores have been killed and sterilization is qualified. If turbidity or discoloration occurs, it proves that sterilization is incomplete.

[0033] The clamping assembly of this device includes a pull rod 21 rotatably mounted on the side wall of the guide tube 4. Parallel and equal-length connecting rods I22 and II40 are rotatably mounted on the side wall of the adjusting tube 12. A clamping arm 19 is hinged to the end of connecting rods I22 and II40 away from the adjusting tube 12. A clamping plate 18 is fixed to the end of the clamping arm 19. The clamping assembly also includes a sliding frame 9 connected to the connecting tube 2. The guide tube 4 is fixedly mounted on the sliding frame 9. A threaded post 13 is rotatably mounted on the sliding frame 9. A connecting plate 14, which is fixed to the end of the adjusting tube 12, is threaded onto the threaded post 13.

[0034] With the above settings, when the threaded column 13 is rotated, the threaded column 13 drives the connecting plate 14 to slide, so that the adjusting tube 12 slides relative to the guide tube 4. At this time, under the connection of the pulling rod 21, the connecting rod I22 and the connecting rod II40 rotate synchronously, so that the two clamping arms 19 can move towards or away from each other, thereby clamping the test bottle containing the indicator, making it convenient to move the test bottle and place it in the testing area inside the ethylene oxide sterilization box 1.

[0035] The inner tube 30 has several circumferentially evenly distributed trapezoidal clamping blocks 34 slidably mounted radially inside it. Radial columns 35, fixed to the inner tube 30, are slidably mounted inside each trapezoidal clamping block 34. A connecting spring 36 is fixed between the radial column 35 and the trapezoidal clamping block 34. A side block 42 is fixed to the side wall of the steering cylinder 17. A triangular block 41 is slidably mounted on the side block 42. A pushing spring 43 is fixed between the triangular block 41 and the side block 42. Two V-grooves 5 are provided on the branch tube 3 to engage with the triangular block 41.

[0036] During the process of placing the test bottle inside the connecting tube 2, the adjusting cylinder 17 is rotated relative to the inner tube 30 until the side holes I31 and II32 correspond. The test bottle is then placed into the inner tube 30 through the side holes I31 and II32. After entering the inner tube 30, the test bottle is supported by the trapezoidal clamping block 34. A vertical rod 16 is vertically slidably installed inside the adjusting cylinder 17. A top plate 15 is fixed to the top of the vertical rod 16, and a push plate 33 is fixed to the bottom of the vertical rod 16.

[0037] The top plate 15 drives the vertical rod 16 to move vertically downward, causing the push plate 33 to move downward and push the test bottle. After the bottom of the test bottle pushes against the trapezoidal clamping block 34, the trapezoidal clamping block 34 slides relative to the radial column 35. Under the elastic action of the connecting spring 36, the trapezoidal clamping block 34 temporarily clamps the test bottle. The push of the push plate 33 causes the test bottle to move below the branch pipe 3. The connecting pipe 2 is a transparent structure, which makes it easy to observe the movement position of the clamping support plate 18, so that it is located below the connecting pipe 2 and clamps the test bottle.

[0038] After the test bottle is installed inside the inner tube 30, the steering cylinder 17 is rotated relative to the inner tube 30 to achieve the sealing of the inner tube 30. After the sealing is achieved, under the elastic action of the push spring 43, the triangular block 41 is inserted into the corresponding V groove 5, which plays an effective positioning role of the steering cylinder 17 and ensures the fast and stable sealing operation of the inner tube 30.

[0039] Second embodiment: Please refer to the appendix Figure 1 - Appendix Figure 10In addition to the first embodiment, the locking assembly of this device includes a locking frame 26 rotatably mounted on the extension block 27, a locking part 29 fixed at the end of the locking frame 26, a push block 28 corresponding to the locking frame 26 slidably mounted on the extension block 27, the push block 28 being axially corresponding to the locking collar 7, a connecting spring 44 being fixed between the push block 28 and the extension block 27, and a mating groove 39 adapted to the insertion of the extension block 27 being provided on the extension platform 38.

[0040] With the above settings, the movable frame 8 can drive the connecting pipe 2 to move until the extension platform 38 docks with the connecting pipe 2. The extension block 27 is engaged with the docking groove 39 to limit the position of the connecting pipe 2. Then, the locking collar 7 is rotated to move relative to the connecting pipe 2. The locking collar 7 pushes against the pushing block 28, the pushing block 28 pushes against the locking frame 26, and the locking part 29 at the end of the locking frame 26 pushes against the extension platform 38. Thus, the extension platform 38 is clamped by the locking part 29 and the connecting pipe 2, and the fast and stable docking of the connecting pipe 2 and the extension platform 38 is completed.

[0041] A guide frame 20 is fixed inside the ethylene oxide sterilizer 1. A sealing lift door 25 is vertically slidably mounted on the guide frame 20. The sealing lift door 25 is used to seal the end of the extension tube 6 away from the connecting tube 2. When the connecting tube 2 and the extension table 38 are connected, the sealing lift door 25 is adjusted to move vertically downward. At this time, the sealing lift door 25 no longer seals the extension tube 6, realizing internal communication between the ethylene oxide sterilizer 1 and the connecting tube 2. At this time, by adjusting the clamping assembly, the test bottle on it can be extended into the ethylene oxide sterilizer 1 to test the sterilization effect.

[0042] Specifically, a servo motor 37 is fixed on the connecting pipe 2, and a main gear 10 is coaxially fixed on the output shaft of the servo motor 37. A rack 11 that meshes with the main gear 10 is fixed on the sliding frame 9. The servo motor 37 can drive the main gear 10 to rotate, the main gear 10 drives the rack 11 to move, and the rack 11 drives the sliding frame 9 to move, thereby realizing the free sliding adjustment of the clamping assembly, which makes it convenient to move the test bottle to the test area.

[0043] In addition, an ultraviolet lamp (23) is installed inside the regulating tube (12), and a strip hole (24) is opened on the side wall of the regulating tube (12). The ultraviolet light emitted by the ultraviolet lamp (23) can pass through the strip hole (24) to disinfect the vicinity of the clamping tray (18), and can also perform internal sterilization and disinfection on the connecting tube (2) and the inner tube (30) to ensure the sterility of the connecting tube (2) before use and improve the accuracy of the test.

[0044] In summary, this invention enables the extension tube 6 and the connecting tube 2 to be quickly and reliably connected and locked by the locking assembly, allowing the ethylene oxide sterilizer 1 and the connecting tube 2 to be connected in a closed manner. The clamping assembly drives the clamping tray 18 to place the test bottle containing the biological indicator inside the ethylene oxide sterilizer 1. The test bottle can move freely relative to the connecting tube 2, which greatly facilitates the free adjustment of the ethylene oxide sterilization effect detection area and improves the accuracy of sterilization effect detection. In this invention, the test bottle containing the biological indicator can enter the inner tube 30 through the side hole II32 on the steering cylinder 17. The test bottle is initially supported by the trapezoidal clamping block 34. The top plate 15 and the vertical rod 16 drive the push plate 33 to push the test bottle, so that the test bottle can slide relative to the branch tube 3 and extend to the clamping tray 18 for clamping. The test bottle can be quickly put into the container with the help of the small-area side holes I31 and II32. The operation is simple and avoids the frequent opening of the ethylene oxide sterilizer 1, improving the accuracy of the test and the convenience of operation.

[0045] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ethylene oxide sterilization effect testing device, comprising an ethylene oxide sterilization chamber (1) and a movable frame (8), wherein an extension tube (6) is installed on the ethylene oxide sterilization chamber (1), and a connecting tube (2) that is connected to the extension tube (6) is fixed on the movable frame (8), characterized in that, An extension platform (38) is fixed to the end of the extension tube (6). A locking collar (7) is threaded onto the connecting tube (2). Several circumferentially distributed extension blocks (27) are fixed on the connecting tube (2). Each extension block (27) is equipped with a locking component that corresponds axially to the locking collar (7). The locking component is used to lock the extension tube (6) and the connecting tube (2) together. A guide tube (4) is slidably installed inside the connecting tube (2). An adjusting tube (4) slides through the guide tube (4). A pair of clamping components are installed between the section pipe (12), the regulating pipe (12) and the guide pipe (4). Each clamping component is equipped with a clamping plate (18). A branch pipe (3) is fixed on the connecting pipe (2). An inner pipe (30) is fixed inside the branch pipe (3). A steering cylinder (17) is rotatably installed on the branch pipe (3) and sleeved outside the inner pipe (30). The side walls of the steering cylinder (17) and the inner pipe (30) are respectively provided with a side hole II (32) and a side hole I (31).

2. The ethylene oxide sterilization effect testing device according to claim 1, characterized in that, The clamping assembly includes a pull rod (21) rotatably mounted on the side wall of the guide tube (4), and parallel and equal-length connecting rods I (22) and II (40) rotatably mounted on the side wall of the adjusting tube (12). A clamping arm (19) is hinged to one end of the connecting rods I (22) and II (40) away from the adjusting tube (12), and a clamping plate (18) is fixed to the end of the clamping arm (19).

3. The ethylene oxide sterilization effect testing device according to claim 2, characterized in that, The clamping assembly also includes a sliding frame (9) connected to the connecting tube (2), the guide tube (4) is fixedly installed on the sliding frame (9), a threaded column (13) is rotatably installed on the sliding frame (9), and a connecting plate (14) fixed to the end of the adjusting tube (12) is threaded onto the threaded column (13).

4. The ethylene oxide sterilization effect testing device according to claim 1, characterized in that, A plurality of trapezoidal clamping blocks (34) are slidably installed radially inside the inner tube (30) and are evenly distributed in the circumference. A radial column (35) fixed to the inner tube (30) is slidably installed inside the trapezoidal clamping block (34). A connecting spring (36) is fixed between the radial column (35) and the trapezoidal clamping block (34).

5. The ethylene oxide sterilization effect testing device according to claim 4, characterized in that, The side wall of the steering cylinder (17) is fixed with a side block (42), a triangular block (41) is slidably installed on the side block (42), a push spring (43) is fixed between the triangular block (41) and the side block (42), and two V grooves (5) are opened on the branch pipe (3) to fit the triangular block (41).

6. The ethylene oxide sterilization effect testing device according to claim 4, characterized in that, A vertical rod (16) is vertically slidably installed inside the steering cylinder (17). A top plate (15) is fixed to the top of the vertical rod (16), and a push plate (33) is fixed to the bottom of the vertical rod (16).

7. The ethylene oxide sterilization effect testing device according to claim 1, characterized in that, The locking assembly includes a locking frame (26) rotatably mounted on the extension block (27), a locking part (29) fixed at the end of the locking frame (26), a push block (28) corresponding to the locking frame (26) slidably mounted on the extension block (27), the push block (28) axially corresponding to the locking collar (7), a connecting spring (44) fixed between the push block (28) and the extension block (27), and a mating groove (39) adapted to the extension block (27) is provided on the extension platform (38).

8. The ethylene oxide sterilization effect testing device according to claim 1, characterized in that, The ethylene oxide sterilization chamber (1) is fixed with a guide frame (20), and the sealing lifting door (25) is vertically slidably installed on the guide frame (20). The sealing lifting door (25) is used to seal the end of the extension tube (6) away from the connecting tube (2).

9. The ethylene oxide sterilization effect testing device according to claim 1, characterized in that, A servo motor (37) is fixed on the connecting pipe (2), and a main gear (10) is fixed coaxially on the output shaft of the servo motor (37). A rack (11) that meshes with the main gear (10) is fixed on the sliding frame (9).

10. The ethylene oxide sterilization effect testing device according to claim 1, characterized in that, A rotating door (45) is rotatably installed at the bottom of the connecting pipe (2).

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