A device for testing leakage of finished infusion solutions in an intravenous medication preparation center

Abstract

A device for testing the leakage of finished intravenous infusion bags during extrusion in a medical medication preparation center is disclosed, relating to the field of medical technology. An octagonal frame is fixedly mounted with a sliding frame. Two extension plates are mounted on the top of the sliding frame, and short shafts are located on the sides of the extension plates. An electric cylinder is also fixedly mounted on the top of the sliding frame, with its piston rod fixedly connected to the top of a cylinder. A pressure plate is slidably mounted inside the cylinder, and a pressure sensor is also located inside the cylinder and connected to the pressure plate. In use, this device allows for repeated pressing of the infusion bag using an alternating pressing method. The pressing stroke is further controlled by adjusting the height of the lever, thereby controlling the pressing force. This simulates the pressing force within the standard range for different sizes of infusion bags, thus screening out unqualified products. Furthermore, the pressure lever has a buffer design for flexible pressing.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, and in particular to a device for testing leakage of finished intravenous infusion products in an intravenous medication preparation center. Background Technology

[0002] The Pharmacy Intravenous Admixture Services (PIVAS) is an important part of hospital pharmacy services, responsible for the centralized preparation of intravenous medications to ensure the safety and effectiveness of drug preparation. With the development of medical technology, the types and quantities of intravenous medications are constantly increasing, which places higher demands on the quality control of finished infusion solutions. The sealing of infusion bags / bottles is one of the key factors affecting infusion safety.

[0003] Leaking IV bags can have adverse effects. First, it leads to medication waste, as leakage results in insufficient effective drug dosage, affecting treatment efficacy. Second, it poses a risk of contamination: leaked medication may contaminate the environment or work surfaces, increasing the risk of cross-infection. Third, it poses a safety hazard to patients, as leakage may cause changes in the pressure of the IV bag, leading to air ingress or abnormal drug concentrations, endangering the patient's life.

[0004] Existing methods for detecting infusion bags mostly involve manual inspection, which is time-consuming, labor-intensive, and prone to missed or incorrect detections. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model discloses a leakage testing device for finished intravenous infusion bags in an intravenous medication preparation center. This device effectively solves the problems in the background technology. During use, the device employs an alternating pressing method to repeatedly press the infusion bag. The pressing stroke is further controlled by adjusting the lever height, thereby controlling the pressing force and simulating the pressing force within the standard range for different specifications of infusion bags. This allows for the screening of unqualified products. Furthermore, the pressing lever has a buffer design for flexible pressing. The device's cylinder contains a pressing sensor. After the pressing test is completed, another cylinder pressing operation triggers the internal sensor. If the sensor value remains stable for a few seconds, it indicates no leakage; if the sensor value decreases, it indicates leakage, and the product is considered unqualified. The device offers high accuracy.

[0006] A device for testing leakage of finished intravenous infusion products in an intravenous medication preparation center includes a sliding frame fixedly mounted on an octagonal frame, two extension plates on the top of the sliding frame, short shafts on the sides of the extension plates, an electric cylinder fixedly mounted on the top of the sliding frame, the piston rod of the electric cylinder being fixedly connected to the top of a cylinder, a pressure plate being slidably mounted inside the cylinder, and a pressure sensor being installed inside the cylinder and connected to the pressure plate.

[0007] Preferably, the octagonal frame has multiple round holes, and a pressure rod is slidably installed in the round holes. A spring is installed on the pressure rod, with the upper edge of the spring contacting the lower edge of the octagonal frame and the lower edge of the spring contacting the pressure rod.

[0008] Preferably, the short shaft on the inner side of the extension plate is slidably connected to the grooves at both ends of the lever, the shaft in the middle of the lever is rotatably installed in the round hole on the vertical slider, and a lever is also fixedly installed on the shaft of the lever. The teeth on the lever mesh with the motor gear of the stepper motor I. The stepper motor I is fixedly installed on the extension bracket, and the extension bracket is fixedly installed on the side of the vertical slider.

[0009] Preferably, the vertical slider is threadedly connected to the threaded rod, the upper end of the threaded rod is connected to the motor shaft of the stepper motor II, the stepper motor II is fixedly installed on the upper layer of the horizontal plate, and the threaded rod is rotatably installed on the lower layer of the horizontal plate. The horizontal plate is fixedly welded to the middle of the main support.

[0010] Preferably, multiple slide rods are fixedly installed on the main support. The lower end of the slide rod is fixedly connected to the fixed frame. The slide rod is also fixedly installed in the middle of the main support with the fixed frame. At the same time, the slide rod is also slidably connected to the round hole on the side of the sliding frame. The edge of the middle of the main support is also slidably connected to the slide groove on the vertical slider.

[0011] Preferably, the main bracket is covered by an outer shell, the front of which is equipped with a display screen, and a base plate is fixedly installed at the lower end of the outer shell.

[0012] Preferably, the two ends of the lever are shaped similarly to the top of a tuning fork, and the two ends of the lever are provided with grooves.

[0013] Preferably, the lower end of the main support is fixedly connected to the support on the conveyor belt, a right-angle support is fixedly installed on the side of the conveyor belt, a lead screw is rotatably installed on the right-angle support, one end of the lead screw is connected to the motor shaft of stepper motor III, stepper motor III is fixedly installed on the right-angle support, and a paddle slider is also slidably installed on the right-angle support, the paddle slider is threadedly connected to the lead screw.

[0014] The beneficial effects of this utility model compared with the prior art are: 1. When using this utility model, the infusion bag can be repeatedly pressed by alternating pressing, and the pressing stroke can be further controlled by controlling the height of the lever, thereby controlling the pressing force, simulating the pressing force within the standard range of different specifications of infusion bags, thereby screening out unqualified products, and the pressing rod is equipped with a buffer design to achieve flexible pressing.

[0015] 2. The cylinder of this device is equipped with a pressing sensor. After the pressing test is completed, the cylinder pressing operation is performed to trigger the internal sensor. If the sensor value remains stable for a few seconds, it means there is no leakage. If the sensor value decreases, it means there is leakage and the product is considered unqualified. The device has high accuracy. Attached Figure Description

[0016] Figure 1 This is an isometric view of the overall mechanism of this utility model.

[0017] Figure 2 This is a diagram showing the internal structure of the overall mechanism of this utility model.

[0018] Figure 3 This is a first-view view of the connection structure at the octagonal frame and pressure bar of this utility model.

[0019] Figure 4 This is a second-view view of the connection structure at the octagonal frame and pressure bar of this utility model.

[0020] Figure 5 This is a diagram showing the connection relationship between the lever and the extension plate of this utility model.

[0021] Figure 6 This is a first-view view of the connection structure at the lever and vertical slider of this utility model.

[0022] Figure 7 This is a second-view view of the connection structure at the lever and vertical slider of this utility model.

[0023] Figure 8 This is a structural diagram of the main support of this utility model.

[0024] Figure 9 This is a structural diagram of the conveyor belt section of this utility model.

[0025] Reference numerals: 1. Octagonal frame; 2. Sliding frame; 3. Extension plate; 4. Electric cylinder; 5. Cylinder; 6. Pressure plate; 7. Pressure rod; 8. Spring; 9. Lever; 10. Actuating rod; 11. Vertical slider; 12. Extension bracket; 13. Stepper motor I; 14. Stepper motor II; 15. Threaded rod; 16. Main bracket; 17. Sliding rod; 18. Fixing frame; 19. Horizontal plate; 20. Housing; 21. Display screen; 22. Base plate; 23. Conveyor belt; 24. Right-angle bracket; 25. Lead screw; 26. Actuating slider; 27. Stepper motor III. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model patent. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are merely simplified descriptions for ease of 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. Therefore, they should not be construed as limitations on this utility model patent. Furthermore, for ease of description, spatial relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the accompanying drawings. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatial relative descriptive terms used herein can be interpreted accordingly.

[0028] Implementation, for example Figures 1-8 As shown, a device for testing leakage of finished intravenous infusion products in an intravenous medication preparation center is provided.

[0029] In one optional embodiment of this utility model, such as Figure 3 , Figure 4 As shown, a sliding frame 2 is fixedly installed on the octagonal frame 1. Two extension plates 3 are provided on the top of the sliding frame 2. Short shafts are provided on the sides of the extension plates 3. An electric cylinder 4 is also fixedly installed on the top of the sliding frame 2. The piston rod of the electric cylinder 4 is fixedly connected to the top of the cylinder 5. A pressure plate 6 is slidably installed inside the cylinder 5. At the same time, a pressure sensor is provided inside the cylinder 5. The pressure sensor is connected to the pressure plate 6.

[0030] In one optional embodiment of this utility model, such as Figure 3 , Figure 4 As shown, the octagonal frame 1 has multiple round holes, and a pressure rod 7 is slidably installed in the round holes. A spring 8 is installed on the pressure rod 7. The upper side of the spring 8 contacts the lower side of the octagonal frame 1, and the lower side of the spring 8 contacts the pressure rod 7.

[0031] In one optional embodiment of this utility model, such as Figure 5 , Figure 6 , Figure 7 As shown, the short shaft on the inner side of the extension plate 3 is slidably connected to the grooves at both ends of the lever 9. The shaft in the middle of the lever 9 is rotatably installed in the round hole on the vertical slider 11. A toggle lever 10 is also fixedly installed on the shaft of the lever 9. The teeth on the toggle lever 10 mesh with the motor gear of the stepper motor I 13. The stepper motor I 13 is fixedly installed on the extension bracket 12. The extension bracket 12 is fixedly installed on the side of the vertical slider 11.

[0032] In one optional embodiment of this utility model, such as Figure 6 , Figure 7 , Figure 8 As shown, the vertical slider 11 is threadedly connected to the threaded rod 15. The upper end of the threaded rod 15 is connected to the motor shaft of the stepper motor II 14. The stepper motor II 14 is fixedly installed on the upper layer of the horizontal plate 19, while the threaded rod 15 is rotatably installed on the lower layer of the horizontal plate 19. The horizontal plate 19 is fixedly welded to the middle of the main support 16.

[0033] In one optional embodiment of this utility model, such as Figure 6 , Figure 8 As shown, multiple slide rods 17 are fixedly installed on the main support 16. The lower end of the slide rod 17 is fixedly connected to the fixed frame 18. The slide rod 17 is also fixedly installed in the middle of the main support 16 with the fixed frame 18. At the same time, the slide rod 17 is also slidably connected to the round hole on the side of the sliding frame 2. The edge of the middle of the main support 16 is also slidably connected to the groove on the vertical slider 11.

[0034] In one optional embodiment of this utility model, such as Figure 1 As shown, the outer edge of the main bracket 16 is covered by a shell 20, the front of the shell 20 is equipped with a display screen 21, and the bottom plate 22 is fixedly installed at the lower end of the shell 20.

[0035] In one optional embodiment of this utility model, such as Figure 6 As shown, the shapes of the two ends of lever 9 are similar to the top of a tuning fork, and the two ends of lever 9 are provided with grooves.

[0036] In one optional embodiment of this utility model, such as Figure 9 As shown, the lower end of the main support 16 is fixedly connected to the support on the conveyor belt 23. A right-angle support 24 is fixedly installed on the side of the conveyor belt 23. A lead screw 25 is rotatably installed on the right-angle support 24. One end of the lead screw 25 is connected to the motor shaft of the stepper motor III 27. The stepper motor III 27 is fixedly installed on the right-angle support 24. A paddle slider 26 is also slidably installed on the right-angle support 24. The paddle slider 26 is threadedly connected to the lead screw 25.

[0037] Working principle: When using this utility model, the batch of infusion bags to be tested are placed on the conveyor belt 23, and then the parameters of the infusion bag are clicked on the display screen 21 to adjust the test pressure of the infusion bag. Specifically, after the test parameters of the infusion bag are selected, the stepper motor II 14 is started, which drives the threaded rod 15 to rotate, thereby driving the vertical slider 11 to slide up and down, thereby adjusting the pressing height and realizing the adjustment of the pressing pressure of different types of infusion bags.

[0038] Then, stepper motor I13 starts, driving the lever 10 to swing, which in turn drives lever 9 to swing. Lever 9 drives the sliding frames 2 on both sides to slide up and down alternately, so that the pressure rods 7 on both sides press the infusion bag. During the pressing, the spring 8 on the pressure rod 7 plays a buffering role, realizing a gentle pressing. After repeated pressing, lever 9 returns to the horizontal state. Then, electric cylinder 4 starts, driving cylinder 5 to slide downward, so that pressure plate 6 moves downward until it presses the infusion bag. After holding for a few seconds, the system will record the value of the pressing sensor. If the value is stable, it is considered a qualified product. If the value decreases, it indicates leakage. The system will display "unqualified" on display screen 21 and alarm screen, while emitting a beeping sound. At the same time, the unqualified infusion bag is pushed out from the side of conveyor belt 23. Specifically, when the unqualified infusion bag is conveyed to the sliding bar 26, stepper motor III starts, driving screw 25 to rotate, which in turn drives sliding bar 26 to move, pushing the unqualified infusion bag to the side for classification.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing leakage during the squeezing of finished intravenous infusion solutions in an intravenous medication preparation center, characterized in that, An octagonal frame (1) is fixedly mounted with a sliding frame (2). Two extension plates (3) are provided on the top of the sliding frame (2). Short shafts are provided on the sides of the extension plates (3). An electric cylinder (4) is also fixedly mounted on the top of the sliding frame (2). The piston rod of the electric cylinder (4) is fixedly connected to the top of the cylinder (5). A pressure plate (6) is slidably mounted inside the cylinder (5). At the same time, a pressure sensor is provided inside the cylinder (5). The pressure sensor is connected to the pressure plate (6).

2. The device for testing leakage of finished intravenous infusion solution in an intravenous medication preparation center according to claim 1, characterized in that, The octagonal frame (1) is provided with multiple round holes, and a pressure rod (7) is slidably installed in the round holes. A spring (8) is installed on the pressure rod (7). The upper side of the spring (8) contacts the lower side of the octagonal frame (1), and the lower side of the spring (8) contacts the pressure rod (7).

3. The device for testing leakage of finished intravenous infusion solution in an intravenous medication preparation center according to claim 2, characterized in that, The short shaft inside the extension plate (3) is slidably connected to the grooves at both ends of the lever (9). The shaft in the middle of the lever (9) is rotatably installed in the round hole on the vertical slider (11). A toggle rod (10) is also fixedly installed on the shaft of the lever (9). The teeth on the toggle rod (10) mesh with the motor gear of the stepper motor I (13). The stepper motor I (13) is fixedly installed on the extension bracket (12). The extension bracket (12) is fixedly installed on the side of the vertical slider (11).

4. The device for testing leakage of finished intravenous infusion solution in an intravenous medication preparation center according to claim 3, characterized in that, The vertical slider (11) is threadedly connected to the threaded rod (15). The upper end of the threaded rod (15) is connected to the motor shaft of the stepper motor II (14). The stepper motor II (14) is fixedly installed on the upper layer of the horizontal plate (19), while the threaded rod (15) is rotatably installed on the lower layer of the horizontal plate (19). The horizontal plate (19) is fixedly welded to the middle of the main support (16).

5. The device for testing leakage of finished intravenous infusion solution in an intravenous medication preparation center according to claim 4, characterized in that, Multiple slide rods (17) are fixedly installed on the main support (16). The lower end of the slide rod (17) is fixedly connected to the fixed frame (18). The slide rod (17) is also fixedly installed in the middle of the main support (16) with the fixed frame (18). At the same time, the slide rod (17) is also slidably connected to the round hole on the side of the sliding frame (2). The edge of the middle of the main support (16) is also slidably connected to the groove on the vertical slider (11).

6. The device for testing leakage of finished intravenous infusion solution in an intravenous medication preparation center according to claim 5, characterized in that, The main support (16) is covered with a shell (20), and a display screen (21) is provided on the front of the shell (20). A base plate (22) is fixedly installed at the lower end of the shell (20).

7. The device for testing leakage of finished intravenous infusion solution in an intravenous medication preparation center according to claim 6, characterized in that, The lever (9) has two ends with shapes similar to the top of a tuning fork, and the lever (9) has grooves at both ends.

8. The device for testing leakage of finished infusion solution in an intravenous medication preparation center according to claim 7, characterized in that, The lower end of the main support (16) is fixedly connected to the support on the conveyor belt (23). A right-angle support (24) is fixedly installed on the side of the conveyor belt (23). A lead screw (25) is rotatably installed on the right-angle support (24). One end of the lead screw (25) is connected to the motor shaft of the stepper motor III (27). The stepper motor III (27) is fixedly installed on the right-angle support (24). A paddle slider (26) is also slidably installed on the right-angle support (24). The paddle slider (26) is threadedly connected to the lead screw (25).

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