Detection device for outer conical joint of RS medicine storage device

Abstract

The utility model discloses an RS medicine storage device external conical joint detection device, which comprises a shell, a cylinder holder, a test seat, a cam pin and a spring, the cylinder holder, the test seat, the cam pin and the spring are all arranged in the shell, the bottom of the shell is provided with the spring, the top of the spring is connected with the bottom of the test seat, the outer wall of the test seat is provided with a spiral groove, and the spiral groove is connected with the cam pin. The cam pin is fixedly installed in the shell, the front end of the cam pin is inserted in the spiral groove, a connector fixing base is arranged on the top of the testing base, a cylinder holder fixed to the shell is arranged above the testing base, a first installation hole is formed in the top of the shell, and the first installation hole is formed above the cylinder holder and communicated with the cylinder holder. The device has the advantages of being reasonable in structure, accurate in detection, high in detection efficiency and capable of reducing labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment testing, specifically to a testing device for the outer conical joint of an RS medicine reservoir. Background Technology

[0002] The basic purpose of an insulin pump in an infusion pump is to mimic the secretory function of the pancreas, continuously injecting insulin subcutaneously into the user according to the dose required by the body, maintaining stable blood sugar throughout the day, and thus achieving the goal of controlling diabetes.

[0003] RS drug reservoirs are important components of infusion equipment, such as Figure 1 As shown, the bottom of the reservoir has four reinforcing ribs evenly distributed along the axial direction of the tube. These ribs protrude from the bottom of the tube. The outer conical connector of the RS reservoir typically uses a Luer connector. Luer connectors are a commonly used standard leak-proof interface in medical devices, characterized by quick operation, good sealing, and easy switching, making them widely applicable. Currently, the internationally accepted standard is the 6:100mm Luer connector, also known as the 6% Luer connector.

[0004] To ensure the quality of medical devices, my country has issued GB / T 1962.1-2015 Syringes, Needles and Other Medical Devices 6% (Luer) Conical Connectors Part 1: General Requirements. Clause 5.3.1.1 stipulates that: "The external conical connector to be tested must be connected to a connector of a dimension conforming to..." Figure 4 The standard internal tapered joints should be used for connection, and both parties should be dry. During assembly, apply an axial force of 27.5 N and hold for 5 seconds, while simultaneously torturing with a torque not exceeding 0.1 N·m, and rotating no more than 90°.

[0005] In the existing technology, the external conical joint of the RS medicine reservoir is usually inspected manually, which is inefficient and has poor detection accuracy. Utility Model Content

[0006] In order to solve the above problems, the purpose of this utility model is to provide an RS medicine storage container outer conical joint detection device with reasonable structure, accurate detection, high detection efficiency and reduced labor intensity.

[0007] According to one aspect of this utility model, a testing device for the outer conical joint of an RS medicine reservoir is provided, comprising: a housing, a cylindrical retainer, a test seat, a cam pin, and a spring. The cylindrical retainer, test seat, cam pin, and spring are all disposed within the housing. The spring is disposed at the bottom of the housing, and its top is connected to the bottom of the test seat. A spiral groove is provided on the outer wall of the test seat. The cam pin is fixedly installed within the housing, with its front end inserted into the spiral groove. A joint fixing seat is provided at the top of the test seat. A cylindrical retainer fixed to the housing is disposed above the test seat. A first mounting hole is provided at the top of the housing, located above and communicating with the cylindrical retainer. By applying a predetermined force to the RS medicine reservoir mounted on the cylindrical retainer and test seat, and using the spring force as the predetermined applied force, the airtightness of the conical joint at the rebound push rod position of the RS medicine reservoir is observed after a predetermined settling time.

[0008] In some embodiments, the housing includes a base, a fixing plate, and an upper shell, with the fixing plate disposed between the base and the upper shell. The upper shell and the fixing plate are fixed to the base by bolts. This separate design facilitates installation and makes it convenient to replace test seats and cylinder holders of different specifications.

[0009] In some embodiments, a second mounting hole is provided at the center of the base, and a first boss is provided at the bottom of the second mounting hole. A spring is placed inside the second mounting hole and sleeved on the outer wall of the first boss. A mounting groove is provided at the top of the base, and the mounting groove is perpendicular to the axis of the second mounting hole. One end of the cam pin is placed in the mounting groove, and the other end of the cam pin extends into the spiral groove. A fixing plate limits the position of the cam pin from above. The rotation angle of the test seat is limited by the cooperation between the cam pin and the spiral groove, thereby determining whether it is qualified.

[0010] In some embodiments, a third mounting hole is provided at the center of the fixing plate, through which the test holder passes. The third mounting hole facilitates the vertical movement of the test holder.

[0011] In some embodiments, a sliding groove is provided inside the upper shell, and the cylinder holder is installed in the sliding groove, with the first mounting hole communicating with the sliding groove. The sliding groove facilitates ensuring that the cylinder holder moves downward along with the test seat in the event of a failure.

[0012] In some embodiments, the cylinder holder includes a body, a fourth mounting hole, and a limiting member. The fourth mounting hole is located at the center of the body and extends through the top and bottom of the body. The limiting member is disposed within the fourth mounting hole. The RS drug reservoir is placed through the fourth mounting hole, and the conical connector of the drug reservoir extends out of the fourth mounting hole and connects to the test seat. The limiting member prevents the RS drug reservoir body from rotating.

[0013] In some embodiments, the limiting member includes several limiting grooves, the number and position distribution of which correspond to the bottom protrusion of the RS medicine reservoir. The engagement of the limiting grooves with the bottom protrusion of the RS medicine reservoir prevents the RS medicine reservoir body from rotating.

[0014] In some embodiments, the test fixture includes a connector fixing seat and a second protrusion. The connector fixing seat is disposed on the top of the test fixture and is connected to the conical connector of the RS drug reservoir. The second protrusion is disposed on the bottom of the test fixture, and the top of a spring is sleeved on the outer wall of the second protrusion. The connector fixing seat is connected to the conical connector of the RS drug reservoir, and a specified thrust is provided by the spring, allowing the device to stand for a specified time to determine whether it passes the test.

[0015] In some implementations, the spiral groove rises spirally along the outer wall of the test holder, and the angle of rotation of the test holder as it rises or falls along the spiral groove is 50°-90°. The rotation and descent of the test holder along the spiral groove simulates the actual installation process of a conical joint.

[0016] This utility model has the following advantages: reasonable structure, accurate detection, high detection efficiency, and reduced labor intensity. This invention applies a specified force to the RS drug reservoir mounted on the cylinder holder and test base, using the spring force to set the applied force. After a specified set time, the airtightness of the conical joint at the RS drug reservoir's rebound push rod position is observed. The separate design facilitates installation and makes it convenient to replace test bases and cylinder holders of different specifications. The rotation angle of the test base is limited by the cooperation of the cam pin and the spiral groove, thus determining whether it passes or fails. The third mounting hole facilitates the vertical movement of the test base. The sliding groove ensures that the cylinder holder moves downwards with the test base in case of failure. The RS drug reservoir is placed through the fourth mounting hole, and the conical joint of the reservoir extends from the fourth mounting hole and connects to the test base. A limiting component prevents the RS drug reservoir body from rotating. The limiting groove engages with the protrusion at the bottom of the RS drug reservoir to prevent the RS drug reservoir body from rotating. The joint fixing seat connects to the conical joint of the RS drug reservoir, and a specified thrust is provided by the spring, allowing a specified set time for determination of pass or fail. The test base rotates and descends along the spiral groove, simulating the actual installation process of the conical joint. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the RS drug reservoir.

[0018] Figure 2 This is a schematic diagram of the structure of an RS medicine reservoir external conical joint detection device according to the present invention;

[0019] Figure 3 This is a cross-sectional view of an RS medicine reservoir external conical joint detection device according to the present invention;

[0020] Figure 4This is a schematic diagram of the base of the RS medicine reservoir external conical joint detection device according to the present invention;

[0021] Figure 5 This is a schematic diagram of the upper shell of the RS medicine reservoir outer conical joint detection device according to the present invention;

[0022] Figure 6 This is a schematic diagram of the test base of the RS medicine reservoir external conical joint testing device of this utility model. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the terms according to the specific circumstances.

[0025] like Figure 2 and Figure 3 As shown, the present invention discloses a detection device for the outer conical joint of an RS medicine reservoir, comprising: a housing 1, a cylindrical retainer 2, a test seat 3, a cam pin 4, and a spring 5. The cylindrical retainer 2, test seat 3, cam pin 4, and spring 5 are all disposed within the housing 1. Spring 5 is disposed at the bottom of the housing 1, and its top is connected to the bottom of the test seat 3. A spiral groove 31 is provided on the outer wall of the test seat 3. Cam pin 4 is fixedly installed within the housing 1, with its front end inserted into the spiral groove 31. A joint fixing seat 32 is provided at the top of the test seat 3. A cylindrical retainer 2, fixed to the housing 1, is disposed above the test seat 3. A first mounting hole 131 is provided at the top of the housing 1, located above and communicating with the cylindrical retainer 2. By applying a specified force to the RS medicine reservoir mounted on the cylindrical retainer 2 and the test seat 3, and using the elastic force of spring 5 as the specified applied force, the airtightness of the conical joint at the rebound push rod position of the RS medicine reservoir is observed after a specified settling time.

[0026] The housing 1 includes a base 11, a fixing plate 12, and an upper shell 13. The fixing plate 12 is disposed between the base 11 and the upper shell 13. The upper shell 13 and the fixing plate 12 are fixed to the base 11 by bolts. The separate design facilitates installation and makes it convenient to replace test seats 3 and cylinder holders 2 of different specifications.

[0027] like Figure 4 As shown, a second mounting hole 111 is provided at the center of the base 11, and a first boss 112 is provided at the bottom of the second mounting hole 111. The spring 5 is placed inside the second mounting hole 111 and is sleeved on the outer wall of the first boss 112. A mounting groove 113 is provided at the top of the base 11, and the mounting groove 113 is perpendicular to the axis of the second mounting hole 111. One end of the cam pin 4 is placed in the mounting groove 113, and the other end of the cam pin 4 extends into the spiral groove 31. The fixing plate limits the position of the cam pin 4 from above. The downward rotation angle of the test seat 3 is limited by the cooperation between the cam pin 4 and the spiral groove 31, thereby simulating the action of connecting the conical joint in a real state.

[0028] A third mounting hole 121 is provided at the center of the fixing plate 12, through which the test seat 3 passes. The third mounting hole 121 facilitates the up and down movement of the test seat 3.

[0029] When it is necessary to replace the test seat 3 and the cylinder holder 2 with different specifications, loosen the connecting bolts and remove the fixing plate 12 and the upper shell 13 respectively, remove the cylinder holder 2, rotate it upward to disengage the spiral groove 31 from the cam pin 4, and replace it with the matching test seat 3 and cylinder holder 2.

[0030] like Figure 5 As shown, a sliding groove 132 is provided inside the upper shell 13, and the cylinder holder 2 is installed in the sliding groove 132. The first mounting hole 131 communicates with the sliding groove 132. The sliding groove 132 facilitates ensuring that the cylinder holder 2 moves downward along with the test seat 3 when the test fails.

[0031] The cylinder holder 2 includes a body 21, a fourth mounting hole 22, and a limiting member 23. The fourth mounting hole 22 is located at the center of the body 21 and extends through the top and bottom of the body 21. The limiting member 23 is located inside the fourth mounting hole 22. The RS drug reservoir is placed through the fourth mounting hole 22, and the conical connector of the drug reservoir extends out of the fourth mounting hole 22 and connects to the test base 3. The limiting member 23 prevents the RS drug reservoir body 21 from rotating.

[0032] The cylinder retainer 2 is a rectangular cooperating structure and other structures that can limit horizontal rotation.

[0033] The limiting member 23 includes several limiting grooves, the number and position distribution of which are consistent with the bottom protrusion of the RS medicine reservoir. The limiting grooves engage with the bottom protrusion of the RS medicine reservoir to prevent the RS medicine reservoir body 21 from rotating.

[0034] like Figure 6As shown, the test seat 3 includes a connector fixing seat 32 and a second protrusion 33. The connector fixing seat 32 is located on the top of the test seat 3 and is connected to the conical connector of the RS drug reservoir. The second protrusion 33 is located on the bottom of the test seat 3, and the top of the spring 5 is sleeved on the outer wall of the second protrusion. The test seat 3 is reset by the spring-loaded drive after being pressed down through the connector fixing seat 32 and the conical connector of the RS drug reservoir.

[0035] The spiral groove 31 spirals upward along the outer wall of the test seat 3, and the test seat 3 rotates upward or downward along the spiral groove 31 at an angle of 50°-90°. The rotation and descent of the test seat 3 along the spiral groove 31 simulates the actual installation process of a conical joint.

[0036] During use, please follow these steps:

[0037] S1. Pull the push rod of the RS medicine reservoir to the top to maximize the amount of air inside the cylinder;

[0038] S2. Place the conical connector of the RS medicine reservoir from the first mounting hole 131 until it extends from the bottom of the fourth mounting hole 22;

[0039] S3. Rotate the RS medicine reservoir to engage the reinforcing rib protrusion at the bottom of the RS medicine reservoir with the limiting groove;

[0040] S4. Continue pressing the RS medicine reservoir to connect its conical connector with the connector fixing seat 32;

[0041] S5. Continue to apply downward force until the cylinder retainer presses down to the fixed plate 12 position, at which point the drug reservoir cylinder can no longer descend;

[0042] S6. Push the push rod of the RS medicine reservoir to squeeze the air inside the cylinder.

[0043] S7. Press to a certain degree and hold for 30 seconds;

[0044] S8. Finally, release the pressure on the push rod. If the push rod returns to its original position, it proves that there is no air leakage inside the cylinder, and the Luer external tapered joint is qualified.

[0045] The principle for determining the quality of the conical joint of the RS drug reservoir is as follows: When the RS drug reservoir is installed in this testing device, the push rod of the drug reservoir is pulled to the top, and the internal air is at its maximum. Then, the testing process is to press the push rod horizontally downwards. At the beginning, the drug reservoir is pressed downwards as a whole. Since the test seat 3 has a standard Luer inner cone, which is the joint fixing seat 32, when pressing down, it will first rotate and tighten the test seat 3 and the outer conical joint of the RS drug reservoir. After the cylinder retainer is pressed to the position of the fixing plate 12, the drug reservoir cylinder will not be able to descend. Only the push rod can descend to compress the air in the cylinder. After being compressed to a certain extent, it is held for 30 seconds and then lifted. If the push rod returns to its original position, it proves that there is no air leakage in the cylinder, and the Luer outer conical joint is qualified.

[0046] During the downward movement of the test seat 3 under force, it rotates and descends along the spiral groove 31 to simulate the actual installation process of the conical joint. It should be noted that since the thrust specified in the test standard is 27.5N, the elastic force of the spring 5 should also be 27.5N.

[0047] In addition, the bottom of the connector fixing seat 32 should be sealed to ensure that the conical connector and the cylinder are in a sealed state when connecting the conical connector of the RS medicine container.

[0048] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A detection device for the outer conical joint of an RS medicine reservoir, characterized in that, include: The device comprises a housing, a cylindrical retainer, a test seat, a cam pin, and a spring. The cylindrical retainer, test seat, cam pin, and spring are all housed within the housing. A spring is located at the bottom of the housing, and its top is connected to the bottom of the test seat. A spiral groove is provided on the outer wall of the test seat. The cam pin is fixedly installed within the housing, with its front end inserted into the spiral groove. A connector fixing seat is provided at the top of the test seat. A cylindrical retainer, fixed to the housing, is located above the test seat. A first mounting hole is provided at the top of the housing, located above and communicating with the cylindrical retainer.

2. The RS medicine reservoir external conical joint detection device according to claim 1, characterized in that, The housing includes a base, a fixing plate, and an upper shell. The fixing plate is disposed between the base and the upper shell, and the upper shell and the fixing plate are fixed to the base by bolts.

3. The RS medicine reservoir external conical joint detection device according to claim 2, characterized in that, The base has a second mounting hole at its center and a first boss at the bottom of the second mounting hole. The spring is placed inside the second mounting hole and is sleeved on the outer wall of the first boss. The base has a mounting groove at its top, which is perpendicular to the axis of the second mounting hole. One end of the cam pin is placed in the mounting groove, so the other end of the cam pin extends into the spiral groove. The fixing plate limits the position of the cam pin from above.

4. A detection device for the outer conical joint of an RS medicine reservoir according to any one of claims 2 or 3, characterized in that, The fixing plate has a third mounting hole at its center, and the test seat passes through the third mounting hole.

5. A detection device for the outer conical joint of an RS medicine reservoir according to any one of claims 2 or 3, characterized in that, The upper shell is provided with a sliding groove, the cylinder retainer is installed in the sliding groove, and the first mounting hole communicates with the sliding groove.

6. The RS medicine reservoir external conical joint detection device according to claim 5, characterized in that, The cylinder retainer includes: a body, a fourth mounting hole, and a limiting member. The fourth mounting hole is provided at the center of the body and extends through the top and bottom of the body. The limiting member is provided inside the fourth mounting hole.

7. The RS medicine reservoir external conical joint detection device according to claim 6, characterized in that, The limiting component includes several limiting grooves, and the number and position distribution of the limiting grooves are consistent with the bottom protrusion of the RS medicine reservoir.

8. The RS medicine reservoir external conical joint detection device according to claim 7, characterized in that, The test seat includes: a connector fixing seat and a second protrusion. The connector fixing seat is located on the top of the test seat and is connected to the conical connector of the RS medicine reservoir. The second protrusion is located on the bottom of the test seat, and the top of the spring is sleeved on the outer wall of the second protrusion.

9. The RS medicine reservoir external conical joint detection device according to claim 8, characterized in that, The spiral groove rises spirally along the outer wall of the test base, and the angle of rotation of the test base as it rises or falls along the spiral groove is 50°-90°.

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