Device for testing sliding performance of injector

Abstract

The utility model discloses a device for testing the sliding performance of an injector. The device comprises a base, a left stand column and a right stand column which are arranged above the base, an injector sleeving device is arranged on the left stand column, a needle cylinder is arranged on the injector sleeving device in a sleeving mode, a stepping motor module is arranged above a core rod, and a force measuring sensor is arranged between the core rod and the stepping motor module. The left stand column is provided with a water tank, and the head of the injector communicates with the water tank through a communicating pipe. The control module is used for driving the stepping motor module; the PC is used for collecting and processing the force value sent by the force transducer; according to the technical scheme, the injector outer sleeve curled edge is directly placed into the injector outer sleeve curled edge profiling structure, the purpose that a clamp is used for clamping in the prior art can be achieved, the motion execution module, the force value sensor and the data processing module are additionally arranged, all parts needed by testing are integrated, the assembling process of a testing device and a force measuring device is omitted, and the testing efficiency is improved. The measurement efficiency is improved.

Description

Technical Field

[0001] The utility model technology is used in the field of syringe sliding performance testing and is used to measure the sliding performance of syringes. Background Art

[0002] The sliding performance of a syringe is an important parameter of the syringe. GB15810-2017 Disposable Sterile Syringes 5.7.3 (P7) has clear requirements for this performance. Before being put on the market, the sliding performance of the syringe needs to be tested. Generally, existing testing devices cannot accurately measure, the results are not accurate enough, and the efficiency is low. Moreover, the testing conditions are quite different from the clinical environment.

[0003] After retrieval, the authorized publication number is 208333840U, and the authorized announcement date is January 4, 2019. It authorizes and discloses a syringe sliding performance testing device. This testing device still has certain defects: This device uses a first fixture mechanism and a second fixture mechanism to fix the syringe. When replacing the syringe for testing, it is necessary to open and close two fixtures, and the relative efficiency of bolt locking and loosening is relatively low, which will have a certain impact on the testing efficiency. This device lacks a supporting motion execution module, a force value sensor, and a data processing module, and needs to be used in conjunction with a corresponding tensile testing machine and calculated with reference to the calculation formula given in the standard to obtain the final required value. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a syringe sliding performance testing device with high testing efficiency and simple operation. This device can automatically calculate the relevant parameters of the syringe sliding performance according to the testing requirements.

[0005] The utility model is realized through the following technical solutions:

[0006] A syringe sliding performance testing device includes a base, a left column above the base. A syringe sleeving device is arranged on the left column, the syringe barrel is sleeved on the syringe sleeving device, a stepping motor module is arranged above the plunger rod, and a force measuring sensor is arranged between the plunger rod and the stepping motor module; it also includes a left column, a water tank is arranged on the left column, and the head of the syringe is communicated with the water tank through a connecting pipe; it further includes a control module for driving the stepping motor module; and a PC for collecting and processing the force value sent by the force measuring sensor.

[0007] Further, the syringe sleeving device includes a syringe outer sleeve curling profiling device and a profiling structure fixing device.

[0008] Further, the syringe outer sleeve curling profiling device includes a fixed base, a profiling groove for fixedly setting the syringe curling is opened on the fixed base, and a syringe through port is opened on the side of the profiling groove.

[0009] Furthermore, the syringe sleeving device further includes a syringe fixing and height adjusting device.

[0010] Furthermore, the syringe fixing and height adjusting device includes a hand-tightening bolt.

[0011] Furthermore, it further includes a position sensor for controlling the displacement of the stepper motor module.

[0012] Furthermore, the water tank includes a water tank height adjusting device.

[0013] The beneficial effects of this technical solution are as follows:

[0014] 1. In this technical solution, the syringe outer sleeve crimp can be directly placed into the syringe outer sleeve crimp profiling structure to achieve the purpose of using a fixture for clamping in the prior art, which can greatly improve the measurement efficiency;

[0015] In this solution, a motion execution module, a force value sensor, and a data processing module are added, integrating all the components required for the test together, saving the assembly process of the test device and the force measuring device, and improving the measurement efficiency;

[0016] In this method, an embedded profiling device is used, and different profiling devices can be replaced to adapt to as many different models and capacities of syringes as possible, improving the applicability of the device.

[0017] The computer calculates and stores the measurement results according to requirements, and can more efficiently obtain the required final data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the working flow chart of the syringe sliding performance test device of the present utility model;

[0019] Figure 2 is the structural schematic diagram of the syringe sliding performance test device;

[0020] Figure 3 is the partial enlarged schematic diagram of the syringe sleeving device of the present utility model;

[0021] Figure 4 is the structural schematic diagram of the first embodiment of the syringe outer sleeve crimp profiling device;

[0022] Figure 5 is the structural schematic diagram of the second embodiment of the syringe outer sleeve crimp profiling device;

[0023] Figure 6 is Figure 4 the corresponding syringe structural schematic diagram;

[0024] Figure 7 is Figure 5 the corresponding syringe structural schematic diagram.

[0025] Wherein: 11 is the base; 12 is the left column; 13 is the right column; 21 is the sink base; 22 is the hand-tightening bolt; 3 is the sink; 41 is the needle head; 42 is the connecting pipe; 51 is the syringe barrel; 52 is the plunger rod; 61 is the hand-tightening bolt; 62 is the profiling structure fixing device; 63 is the syringe outer sleeve curling profiling device; 7 is the force sensor; 81 is the position sensor triggering structure; 82 is the position sensor; 83 is the stepper motor module; 9 is the control module; 631 is the fixing base; 632 is the profiling groove; 633 is the through port. Specific embodiments

[0026] The technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0027] As Figure 2 shown, the syringe sliding performance test device includes: a base 11, a sink height adjustment device, a sink 3, a connecting pipe 42, a syringe to be measured, a syringe fixing and height adjustment device, a force sensor 7, a stepper motor module 83, and a control module 9; there is a left column above the base, and a syringe sleeving device is arranged on the left column. The syringe barrel 51 is sleeved on the syringe sleeving device, and a stepper motor module 83 is arranged above the plunger rod 52, and a force sensor 7 is arranged between the plunger rod and the stepper motor module; it also includes a left column, and a sink 3 is arranged on the left column. The head of the syringe is connected to the sink through a connecting pipe 42.

[0028] As Figure 3 shown, the syringe sleeving device includes a syringe outer sleeve curling profiling device 63 and a profiling structure fixing device 62; the syringe outer sleeve curling profiling device includes a fixing base 631, and a profiling groove 632 for fixedly arranging the syringe curling is opened on the fixing base, and a syringe through port 633 is opened on the side of the profiling groove.

[0029] In this embodiment, if it is necessary to replace the syringe to be measured with different capacities, it is necessary to replace the matching syringe outer sleeve curling profiling device 63, as Figure 4 and Figure 5 , after replacement, the height of the syringe and the sink can be quickly adjusted by the hand-tightening bolt 61 and the hand-tightening bolt 22.

[0030] Referring to Figure 4 and Figure 5, The middle notch of the outer sleeve curling profiling device has the same size as the curling of the syringe outer sleeve, and the curling of the syringe outer sleeve can be completely buckled into the outer sleeve curling profiling device to replace the fixture to fix the syringe. The profiling structure fixing device is used to quickly fix the profiling devices of syringes with different capacities. The hand-tightening bolt is loosened and tightened to quickly adjust the height of the syringe to match syringes with different capacities. The bottom of the syringe is connected to the connecting pipe, and the connecting pipe is placed in the water tank on the right side. The water tank is placed on the water tank height adjustment device, and the water tank height adjustment device is sleeved on the right column of the support frame. By loosening the hand-tightening bolt, the water tank height adjustment device can move freely up and down on the right column. Tightening the hand-tightening bolt fixes the water tank height adjustment device at the specified position. By loosening and tightening the hand-tightening nut, the height of the water tank can be quickly adjusted.

[0031] The chassis of the support frame is weighted with high-density materials to prevent the device from tipping over during use.

[0032] In this specific embodiment, the working steps when the sliding performance test of the syringe is in progress are as follows:

[0033] Power on and start the syringe sliding performance test device. The control module 9 detects whether the position sensor 82 is triggered by the position sensor trigger structure 81:

[0034] If not triggered, the control module 9 drives the stepping motor module 83 to reset and move upward. The stepping motor module 83 drives the position sensor trigger structure 81 to move upward at the same time. During the upward movement, the position sensor trigger structure 81 will contact the upper position sensor 82. After the position sensor 82 is triggered, a pulse signal will be generated and sent to the control module 9. After receiving the given trigger signal, the controller module 9 controls the stepping motor module 83 to stop moving, and the device enters the ready state;

[0035] If triggered, the stepping motor module 83 remains stationary, and the device is in the ready state and can be tested at any time.

[0036] 2. Preparation before syringe test: Place the syringe barrel 51 to be tested into the outer sleeve curling profiling device 63; then connect the connecting pipe 42 to the lower end of the syringe barrel 51, and place the other end of the connecting pipe into the water tank 3; evacuate the air in the syringe, and then fill the syringe with water to the nominal capacity;

[0037] 3. Water tank height adjustment: The water tank 3 is placed on the water tank height adjustment device 21. The water tank height adjustment device 21 is sleeved on the right column 13 of the support frame. By loosening the hand-tightening bolt 22, the water tank height adjustment device 21 can move freely up and down on the right column 13. Tightening the hand-tightening bolt 22 fixes the water tank height adjustment device 21 at the specified position. By loosening and tightening the hand-tightening bolt 22, the height of the water tank 3 can be quickly adjusted;

[0038] 4. Start the test: Open the start test button of the host computer software. The host computer software sends an instruction to the control module 9. The controller module 9 drives the stepper motor module 83 to move downward at a set speed. The stepper motor module 83 drives the force sensor 7 to move downward together, pushing the syringe plunger 52 downward. During the downward movement of the syringe plunger 52, a reaction force is applied to the force sensor 7. The controller module 9 collects the force value during the test of the force sensor 7, and then the controller module 9 sends the collected data to the PC, and the test device hardware automatically resets.

[0039] 5. Data display: After the host computer software obtains the data, it performs data processing and calculation, calculates the specific values required, and displays them in the form of a chart. After confirming that the data is normal, it is saved.

[0040] 6. After the test, turn off the test device.

Claims

1. A syringe sliding performance testing device, characterized in that: It includes a base, a left column above the base, a syringe sleeve device is arranged on the left column, a syringe is sleeved on the syringe sleeve device, a stepper motor module is arranged above the core rod, and a force sensor is arranged between the core rod and the stepper motor module; it also includes a left column, a water tank is arranged on the left column, and the head of the syringe is connected to the water tank through a connecting pipe; It also includes a control module for driving a stepper motor module; PC is used to collect and process the force value sent by the force sensor.

2. The syringe sliding performance testing device according to claim 1, characterized in that: The syringe sleeve device comprises a syringe outer jacket edge profiling device and a profiling structure fixing device.

3. The syringe sliding performance testing device according to claim 2, characterized in that: The syringe jacket curling profiling device comprises a fixed base, the fixed base is provided with a profiling groove for fixing the syringe curling, and the side of the profiling groove is provided with a syringe opening.

4. The syringe sliding performance testing device according to claim 3, characterized in that: The syringe sleeve device also includes a syringe fixing and height adjustment device.

5. The syringe sliding performance testing device according to claim 4, characterized in that: The syringe fixing and height adjusting device comprises a hand-tightening bolt.

6. The syringe sliding performance testing device according to claim 5, characterized in that: A position sensor is also included for controlling the displacement of the stepper motor module.

7. The syringe sliding performance testing device according to claim 6, characterized in that: The water tank includes a water tank height adjustment device.

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