Tooling for injection trigger pull-off force testing and test equipment using same

Abstract

This utility model belongs to the field of medical device testing technology, specifically relating to a fixture for testing the release force of an injection activator and a testing device using the same. The fixture includes: a barb component comprising at least two barb protrusions adapted to be simultaneously inserted into the injection activator; at least two flexible arms of the barb component, each corresponding to a barb protrusion and connected to one end of a flexible arm; and a base connected to the other end of each flexible arm, wherein the base is adapted to be placed in a testing machine. The fixture and testing device using the same utilize the deformation of the flexible arms of the barb component to insert and fix the barb protrusions into the injection activator. Simultaneously, the base of the barb component places the entire fixture into the testing machine for accurate release force testing, thereby ensuring the production or screening of qualified products.

Description

Technical Field

[0001] This utility model belongs to the field of medical device testing technology, specifically relating to a tooling for testing the release force of an injection stimulator and testing equipment using the same. Background Technology

[0002] An injection pen is a commonly used infusion, nursing, and protective device. It has key functions such as drug injection, fluid infusion, protection, precise control, and portability. It plays an important role in the medical field, helping medical personnel to provide accurate, safe, and effective treatment.

[0003] When in use, the person usually needs to hold the injection pen body and press it onto the skin. The injection activator inside the pen body is squeezed into the pen body, which drives the push rod sleeve to slide, so that the injection activator is activated and the injection is completed.

[0004] Because the feedback of the release force after injection is crucial to infusion safety, inaccurate or delayed feedback can pose safety hazards. Therefore, accurately detecting the release force required to remove the injection device, and thus ensuring the production or selection of qualified products, is a pressing technical problem that needs to be solved in this field.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one fixture for testing the release force of an injection stimulator and a testing device using the same.

[0007] In a first aspect, embodiments of this disclosure provide a fixture for testing the release force of an injection activator, including a barb. The barb includes: at least two barb protrusions adapted to be simultaneously inserted into the injection activator; at least two flexible arms of the barb, each barb protrusion corresponding to one end of a flexible arm; and a base connected to the other end of each flexible arm. The base is adapted to be placed into a testing machine.

[0008] In one alternative embodiment, there are two barbed flexible arms, and the two barbed flexible arms are mirror-symmetrical.

[0009] In one alternative embodiment, the barbed flexible arm is made of TPE flexible material.

[0010] In one optional embodiment, the flexible arm of the barb is connected to a barb limiting piece, wherein, The two sides of the barb limiting piece abut against the injection stimulator to limit the movable distance of the barb within the injection stimulator.

[0011] In one optional embodiment, the barb limiting piece extends along the horizontal X-axis to the left and right ends of the barb flexible arm, and the horizontal X-axis is perpendicular to the vertical Y-axis of the barb flexible arm.

[0012] In one alternative embodiment, a support core is further included, the support core being adapted to extend the flexible barbed arm located inside the injection activator outward; the barbed base is provided with barbed base holes corresponding to the support core.

[0013] In one optional embodiment, the support core is provided with a plurality of rigid support core arms, and the rigid support core arms and the flexible arm of the barb are surrounded by an anti-interference cavity.

[0014] In one optional embodiment, the support core is provided with a support core boss, and the barb base is provided with a barb base groove corresponding to the support core boss.

[0015] Secondly, embodiments of this disclosure also provide a testing device, including: a tooling for testing the release force of an injection activator as described above; a syringe, the syringe being provided with an injection activator; and a testing machine, wherein the testing machine is used to test the release force of the injection activator.

[0016] In one optional embodiment, the inner wall of the injection activator is provided with injection activator protrusions. The injection activator protrusion is a stepped block protruding from the inner wall of the injection activator. The injection stimulator tab is used to prevent the barbed protrusion from shifting radially inside the injection stimulator.

[0017] The beneficial effects of this utility model are that the tooling for testing the release force of the injection activator and the testing equipment using it are fixed inside the injection activator by the deformation of the flexible arm of the barb part, and at the same time, the entire tooling for testing the release force of the injection activator is placed into the testing machine through the base of the barb part for accurate detection of the release force, thereby ensuring the production or screening of qualified products.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a perspective view of the barb component in the tooling for testing the release force of the injection activator of this utility model; Figure 2 for Figure 1 Another perspective stereoscopic view; Figure 3 A three-dimensional view showing the assembly of the barbed component, syringe, and testing machine; Figure 4 A perspective view of the support core is provided for the embodiments of this disclosure; Figure 5 This is a perspective view of the mating of the barb and the support core according to an embodiment of this disclosure; Figure 6 This is a perspective view of the testing equipment of this utility model; Figure 7 A three-dimensional view of the syringe and injection stimulator; Figure 8 This is a partial cross-sectional perspective view of a syringe, an injection activator, and a fixture for testing the release force of the injection activator.

[0022] In the picture: 1. Barbed hook component; 11. Barbed hook protrusion; 12. Barbed hook flexible arm; 13. Barbed hook base; 14. Barbed hook limiting piece; 131. Barbed hook base hole; 132. Barbed hook base groove. Support core 2, support core rigid arm 21, support core boss 22, anti-interference cavity 211 3. Injection activator, 31. Injection activator tab, 4. Syringe, 5. Testing machine. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Research has revealed that the feedback of the release force after injection is crucial for infusion safety. Inaccurate or delayed release force feedback can pose safety hazards. Therefore, accurately detecting the release force required to remove the injection activator, and thus ensuring the production or selection of qualified products, is a pressing technical problem that needs to be solved in this field.

[0025] Based on the above research, this disclosure provides a fixture for testing the release force of an injection activator and a testing device using the same, which can test the release force of the injection activator.

[0026] The shortcomings of the above solutions are the result of the inventors' practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the inventors to this disclosure.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] refer to Figure 1 , Figure 2 At least one embodiment provides a tooling for testing the release force of an injection activator, including a barb 1. The barb 1 includes: at least two barb protrusions 11, at least two barb flexible arms 12, with each barb protrusion 11 corresponding to one end of a barb flexible arm 12, and the barb protrusion 11 connected to one end of a barb flexible arm 12; and a barb base 13 connected to the other end of a barb flexible arm 12.

[0030] In short, in this embodiment, the barb 1 is the core component of the tooling for testing the release force of the injection activator. It comprises three parts connected in sequence: a barb protrusion 11, a barb flexible arm 12, and a barb base 13. The barb base 13 is at the bottom, and the barb flexible arm 12 is located between the barb protrusion 11 and the barb base 13. The barb protrusion 11 is connected above the barb flexible arm 12. The number of barb protrusions 11 and barb flexible arms 12 corresponds one-to-one.

[0031] refer to Figure 3 The barbed protrusion 11 is adapted to be inserted into the injection activator 3 at the same time; the barbed base 13 is adapted to be placed into the testing machine 5.

[0032] In short, when using the injection activator release force testing fixture, the flexible arm 12 of the barb is pressed radially inward. The deformation of the flexible arm 12 causes the barb protrusion 11 to insert into the injection activator 3. After stopping the radial inward pressing of the flexible arm 12, the flexible arm 12 springs back to its original position and is fixed inside the injection activator 3 by the barb protrusion 11. At the same time, the barb base 13 places the entire injection activator release force testing fixture into the testing machine 5 for precise detection of the release force. After the test, the production can be guaranteed or qualified products can be screened based on the test results.

[0033] refer to Figure 1 , Figure 2 In some embodiments, there are two flexible arms 12 of the barbed member, and the two flexible arms 12 of the barbed member are mirror-symmetrical on the barbed member base 13.

[0034] It is understandable that the number of barbed protrusions 11 and flexible arms 12 can be multiple, including but not limited to 3, 4, or 5. The actual size ratio and spacing of the barbed protrusions 11 and flexible arms 12 can be adjusted according to requirements. For example, if there are 3 barbed protrusions 11 and flexible arms 12, their size can be reduced, and the flexible arms 12 can be arranged circumferentially on the barbed base 13.

[0035] refer to Figure 2 In some embodiments, the flexible arm 12 of the barb is made of TPE flexible material. It can be one of existing materials such as styrene-based, polyolefin-based, polyurethane-based, polyester-based, silicone rubber-based, nylon elastomer-based, soft PVC-based, and fluororubber-based materials. No absolute limitation is made here; its performance only needs to ensure that the flexible arm 12 of the barb connected to the barb base 13 can be pressed radially inward without breaking and can rebound. Of course, it is best if the material meets medical use standards, but this is not an absolute limitation.

[0036] refer to Figure 1 , Figure 2 In some embodiments, the flexible arm 12 of the barb is connected to a barb limiting piece 14, wherein the two side edges of the barb limiting piece 14 abut against the injection stimulator 3 to limit the movable distance of the barb 1 within the injection stimulator 3.

[0037] In short, when the deformation of the flexible arm 12 of the barb part causes the barb protrusion 11 to be inserted into the injection stimulator 3, in order to prevent interference after the flexible arm 12 of the barb part is inserted into the injection stimulator 3, the setting of the barb part limiting piece 14 can be used to effectively control the depth of the barb protrusion 11 inserted into the injection stimulator 3.

[0038] refer to Figure 1 In some embodiments, the barb limiting piece 14 extends along the horizontal X-axis to the left and right ends of the barb flexible arm 12, and the horizontal X-axis is perpendicular to the vertical Y-axis of the barb flexible arm 12.

[0039] The barbed retaining plate 14 and the barbed flexible arm 12 can be, but are not limited to, integrally formed. The barbed retaining plate 14 is a rectangle with rounded corners, which intersects with the barbed flexible arm 12 to form a cross shape. In short, this design can effectively increase the force application point area when the user presses the barbed flexible arm 12, thus making it easier for the user to apply force.

[0040] Of course, it is understandable that the connection between the barbed limiting piece 14 and the barbed flexible arm 12 is not limited to being integrally formed; it can be a snap-fit, plug-in, or other method. The shape of the barbed limiting piece 14 and its mating shape with the barbed flexible arm 12 are also not absolutely limited. The barbed limiting piece 14 can also be circular, elliptical, rhomboid, etc., and its mating with the barbed flexible arm 12 can be a single-sided extension connection. The goal is simply to increase the area of ​​the force application point when the user presses the barbed flexible arm 12.

[0041] refer to Figure 3 , Figure 4 , Figure 6 In some embodiments, a support core 2 may also be included, which is adapted to extend the flexible barb arm 12 located inside the injection activator 3 outward; the barb base 13 is provided with a barb base hole 131 corresponding to the support core 2. The shape of the barb base hole 131 fits the shape of the support core 2, so that the barb 1 and the support core 2 can fit together and abut.

[0042] In short, to prevent the barb protrusion 11 from inserting into the injection stimulator 3, and to prevent the flexible arm 12 of the barb from failing to spring back and expand outward in time after the radial inward pressing is stopped, the support core 2 can be inserted into the barb 1 through the hole 131 in the base of the barb, so that the support core 2 expands the flexible arm 12 of the barb outward, preventing the barb protrusion 11 from coming out of the injection stimulator 3.

[0043] refer to Figure 4 In some embodiments, the support core 2 is provided with several support core rigid arms 21. Figure 4 There are two rigid support arms 21 in the middle, mirror-mounted on the upper end of the support core 2. The specific number can be adjusted according to the number of flexible arms 12 of the hook component.

[0044] refer to Figure 5 In some embodiments, the rigid support arm 21 and the flexible hook arm 12 are surrounded by an anti-interference cavity 211.

[0045] In short, the rigid support arm 21 not only meets the requirement of outwardly expanding the flexible arm 12 of the hook piece, but also surrounds the flexible arm 12 of the hook piece with an anti-interference cavity 211 to prevent interference between the tooling for testing the release force of the injection activator and the interior of the injection activator 3, such as the injection needle.

[0046] refer to Figure 2 In some embodiments, the support core 2 is provided with a support core boss 22, and the barb base 13 is provided with a barb base groove 132 corresponding to the support core boss 22. The barb base groove 132 and the support core boss 22 are fitted together.

[0047] refer to Figure 6 In short, during use, by pressing the flexible arm 12 of the barb component radially inward, the deformation of the flexible arm 12 causes the barb protrusion 11 to insert into the injection activator 3. After stopping the radial inward pressing of the flexible arm 12, the support core 2 is inserted into the barb 1 through the hole 131 of the barb base, causing the support core 2 to push the flexible arm 12 outward, preventing the barb protrusion 11 from coming out of the injection activator 3. When the shapes of the groove 132 of the barb base and the protrusion 22 of the support core are completely fitted, it indicates that the fixture for testing the release force of the injection activator has been installed. Then, the entire fixture can be placed into the testing machine 5 for precise testing of the release force. After the test, the production can be guaranteed or qualified products can be screened based on the test results.

[0048] refer to Figure 5Understandably, the support core boss 22 can be used to limit the depth of the support core 2 inserted into the barb 1. At the same time, because the support core boss 22 protrudes from the barb base 13, it can also provide a force application point for the user after the tooling for testing the release force of the injection activator is used, making it easier for the support core 2 to be pulled out of the barb 1.

[0049] See Figure 3 , Figure 6 At least one embodiment also provides a testing device, including: a tooling for testing the release force of an injection activator as described above; a syringe 4, the syringe 4 being provided with an injection activator 3; and a testing machine 5, wherein the testing machine 5 is used to test the release force of the injection activator 3.

[0050] For the specific structure and implementation process of the tooling used for the injection exciter release force test, please refer to the relevant discussion in the above embodiments. The syringe 4 is a pen syringe and the testing machine 5 is a release force testing machine, both of which are existing market products. They are only shown in the figure and will not be described in detail here.

[0051] refer to Figure 7 , Figure 8 In some embodiments, the inner wall of the injection stimulator 3 is provided with an injection stimulator protrusion 31, which is a stepped block protruding from the inner wall of the injection stimulator 3. The injection stimulator protrusion 31 is used to prevent the barbed protrusion 11 from radially shifting inside the injection stimulator 3.

[0052] The number of injection activator protrusions 31 is also adjusted according to the number of barbed protrusions 11. As described above, two are set here. When the barbed protrusions 11 enter the injection activator 3, the limiting effect of the injection activator protrusions 31 prevents the barbed protrusions 11 from shifting radially outward, thus preventing the tooling for testing the injection activator release force from detaching from the injection activator 3 and facilitating the operation of the testing machine 5. Therefore, when the barbed protrusions 11 enter the injection activator 3, care must be taken to avoid the position of the injection activator protrusions 31.

[0053] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0054] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0055] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0056] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0057] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0058] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0059] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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 this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0060] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0061] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0062] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A tooling for injection trigger pull test, characterized in that, include: The barbed part (1) includes: At least two barbed protrusions (11) are adapted to be inserted into the injection activator (3) at the same time; At least two barbed flexible arms (12), the barbed protrusions (11) correspond one-to-one with the barbed flexible arms (12), and the barbed protrusions (11) are connected to one end of the barbed flexible arms (12); The hook base (13) is connected to the other end of the hook flexible arm (12), wherein the hook base (13) is adapted to be placed into the testing machine (5).

2. The tooling according to claim 1, characterized in that, There are two flexible arms (12) of the barbed part, and the two flexible arms (12) of the barbed part are mirror symmetrical.

3. The tooling according to claim 1, characterized in that, The hook-shaped flexible arm (12) is made of TPE flexible material.

4. The tooling according to claim 1, characterized in that, The flexible arm (12) of the barb is connected to a barb limiting piece (14), wherein, The two sides of the barb limiting piece (14) abut against the injection stimulator (3) to limit the movable distance of the barb (1) within the injection stimulator (3).

5. The tooling according to claim 4, characterized in that, The barbed limiting piece (14) extends along the horizontal X-axis to the left and right ends of the barbed flexible arm (12). The horizontal X-axis is perpendicular to the vertical Y-axis of the flexible arm (12) of the hook.

6. The tooling of any of claims 1-5, wherein, It also includes a support core (2), which is adapted to push the barbed flexible arm (12) located inside the injection activator (3) outward; The barbed base (13) is provided with a barbed base hole (131) corresponding to the support core (2).

7. The tooling according to claim 6, characterized in that, The support core (2) is provided with several support core rigid arms (21). The rigid arm (21) of the support core and the flexible arm (12) of the barb are surrounded by an anti-interference cavity (211).

8. The tooling according to claim 6, characterized in that, The support core (2) is provided with a support core boss (22). The barbed base (13) is provided with a barbed base groove (132) corresponding to the support core boss (22).

9. A test apparatus, characterized by, include: The tooling as described in any one of claims 1-8; Syringe (4), equipped with injection activator (3); The testing machine (5) is used to test the release force of the injection activator (3).

10. The testing equipment according to claim 9, characterized in that, The inner wall of the injection stimulator (3) is provided with an injection stimulator protrusion (31). The injection stimulator protrusion (31) is a stepped block protruding from the inner wall of the injection stimulator (3). The injection stimulator tab (31) is used to prevent the barb protrusion (11) from radially shifting inside the injection stimulator (3).

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