Luer lock adapter capable of being combined with prefilled syringe in high strength mode

Abstract

The utility model discloses a Luer lock adapter capable of being combined with a pre-filled syringe in a high-strength mode, which comprises a cylindrical shell, a spiral groove used for assembling a protective cap is arranged on the inner wall of the shell, an annular table is arranged on the inner wall of one end of the shell, a plurality of grooves and bosses are arranged on the inner wall of the annular table, the bosses are used for clamping a Luer conical head of the syringe, and the spiral groove is used for assembling the protective cap. And the groove can be filled with a glue solution for connecting the Luer cone head. The Luer lock adapter provided by the utility model can be sleeved on a Luer cone head of a syringe, the Luer cone head can be tightly clamped by the plurality of bosses arranged on the circumference of the annular table in the mounting process, so that the effect of fixing the Luer lock adapter is achieved, and a glue solution with specific viscosity can be injected into the groove, so that the Luer lock adapter can be fixed. Therefore, the Luer lock adapter and the Luer conical head of the injector have high combining capacity, it is guaranteed that after the Luer lock adapter is assembled on the injector, the Luer lock adapter has high anti-drawing force and anti-rotating torque, and it can be guaranteed that the injector is stable in structure and safe in injection.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a Luer lock adapter that can be strongly bonded to a pre-filled syringe. Background Technology

[0002] In the pharmaceutical packaging industry, pre-filled syringes have established standardized packaging practices. However, in both domestic and international markets, there has been a lack of targeted process improvements and product development regarding the functional assurance of components in pre-filled syringes after high-temperature sterilization of pharmaceuticals. Even mature pre-filled syringe products still experience issues such as Luer locking adapter detachment and rotation. This significantly increases the risk of functional failure in pre-filled syringes and jeopardizes drug safety.

[0003] Therefore, how to maintain high torsional and pull-out resistance after moist heat sterilization to ensure the effectiveness of the pre-filled syringe structure and injection safety is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a Luer lock adapter that can be strongly bonded to a pre-filled syringe, which can maintain high anti-torsion and anti-pull-out performance even after moist heat sterilization, thus ensuring the effective structure and injection safety of the pre-filled syringe.

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

[0006] A Luer lock adapter that can be strongly bonded to a pre-filled syringe includes: a cylindrical housing with a spiral groove on the inner wall for mounting a protective cap; an annular platform on the inner wall of one end of the housing; a plurality of grooves and bosses on the inner wall of the annular platform; the bosses for clamping the Luer cone of the syringe; and the grooves for filling with adhesive for connecting the Luer cone.

[0007] Preferably, the grooves and bosses are arranged alternately and evenly distributed on the inner wall of the ring platform.

[0008] Preferably, there are three bosses, and two grooves are provided between each pair of adjacent bosses.

[0009] Preferably, the end face of the boss facing the Luer cone is an arc surface.

[0010] Preferably, the recess depth or protrusion height of the groove and boss is 0.05-1 mm based on the inner diameter of the ring.

[0011] Preferably, the thickness of the ring increases linearly toward the center, and the thickness of the ring near the Luhr cone and along its axial direction is 1-3 mm.

[0012] Preferably, the housing and the ring are integrally molded by injection molding.

[0013] Preferably, the cross-sectional shape of the groove and the boss is rectangular, trapezoidal or semi-circular.

[0014] Preferably, the shell and the ring are made of high-temperature resistant materials.

[0015] Preferably, the outer wall of the housing is provided with several axial protrusions evenly distributed.

[0016] Compared with the above-mentioned background technology, the present invention provides a Luer lock adapter that can be strongly combined with a pre-filled syringe, comprising: a cylindrical shell, the inner wall of the shell being provided with a spiral groove for assembling a protective cap, one end of the inner wall of the shell being provided with a ring platform, the inner wall of the ring platform being provided with a plurality of grooves and bosses, the bosses being used to clamp the Luer cone of the syringe, and the grooves being able to be filled with adhesive liquid for connecting the Luer cone.

[0017] Specifically, the Luer lock adapter provided in this embodiment is fitted onto the Luer cone of the syringe. The end of its inner wall is provided with an inwardly recessed annular platform. Several grooves and bosses are also provided on the circumference of the annular platform. During installation, the bosses will lock the Luer cone to achieve the effect of fixing the Luer lock adapter. Moreover, by injecting a specific viscosity adhesive into the groove, the Luer lock adapter and the Luer cone of the syringe can have a high bonding ability. This ensures that after the Luer lock adapter is assembled on the explosion-proof pre-filled syringe, it has the pull-out force and rotation torque resistance, which can ensure the structural stability of the pre-filled syringe and the injection safety. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the Luer lock adapter provided in an embodiment of the present utility model;

[0020] Figure 2 This is a front view of the Luer lock adapter provided in an embodiment of the present utility model;

[0021] Figure 3 This is a cross-sectional view of the Luer lock adapter provided in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure from another angle.

[0023] in:

[0024] 01-Shell, 02-Spiral groove, 03-Ring platform, 04-Groove, 05-Boss, 06-Rising ridge. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0028] The purpose of this invention is to provide a Luer lock adapter that can be strongly bonded to a pre-filled syringe, which can maintain high anti-torsion and anti-pull-out performance even after moist heat sterilization, thus ensuring the effective structure and injection safety of the pre-filled syringe.

[0029] To achieve the above objectives, the present invention provides the following technical solution:

[0030] Please see Figures 1 to 4 This embodiment provides a Luer lock adapter that can be strongly bonded to a pre-filled syringe, comprising: a cylindrical housing 01, the inner wall of the housing 01 being provided with a spiral groove 02 for assembling a protective cap, one end of the inner wall of the housing 01 being provided with a ring platform 03, the inner wall of the ring platform 03 being provided with a plurality of grooves 04 and bosses 05, the bosses 05 being used to clamp the Luer cone of the syringe, and the grooves 04 being able to be filled with adhesive for connecting the Luer cone.

[0031] The Luer lock adapter includes a cylindrical housing 01, which is fitted onto and fixedly connected to the Luer cone tip of the syringe. A space is provided between the interior of the housing 01 and the Luer cone tip to accommodate a protective cap, thus protecting the syringe from contamination. Therefore, a spiral groove 02 is provided on the inner wall of the housing 01, specifically as follows: Figure 4 As shown, in addition to installing protective caps, the spiral groove 02 can also be used to screw on other medical accessories.

[0032] In this embodiment, the housing 01 is fixed to the Luer cone head by the boss 05 provided on the annular platform 03, specifically as follows: Figure 2 As shown; one end of the housing 01 extends inward to form an annular platform 03. When the Luer lock adapter is connected to the Luer cone of the syringe, the annular platform 03 will be located at the end of the Luer cone close to the syringe barrel. Furthermore, in this embodiment, a plurality of grooves 04 and bosses 05 are provided with the inner diameter of the annular platform 03 as the reference circle. The bosses 05 can be snapped onto the outer circumferential surface of the Luer cone to complete the installation of the Luer lock adapter.

[0033] It should be noted that the diameter of the boss 05 provided on the inner circumferential surface of the ring platform 03 of the Luer lock adapter in this embodiment can be set according to the outer diameter of the Luer cone of the actual syringe, but it is necessary to ensure that the boss 05 and the Luer cone are in an interference fit. In this embodiment, the interference between the two is preferably 0.02-0.4mm.

[0034] Furthermore, since grooves 04 are provided on the circumference of the ring platform 03, these grooves 04 will be filled with adhesive of a specific viscosity after the Luer lock adapter is installed. Further, this filled adhesive will flow along the gap between the inner circumference of the ring platform 03 and the Luer cone until the gap is completely filled. This structural design achieves capillary action and has a strong adhesive effect, thus firmly bonding the Luer lock adapter to the Luer cone. In other words, the boss 05 and the groove 04 form a concave-convex surface structure. This concave-convex structure has a high surface area, forming numerous capillary structures. These capillaries can adsorb organic molecules much smaller than their diameter, thereby achieving efficient adsorption of adhesives, etc. In this way, the Luer lock adapter can not only be locked in place by the boss 05, but also the adhesive can further improve the reliability and safety of the connection between the syringe and the Luer lock adapter.

[0035] In this embodiment, the Luer lock adapter is fitted onto the Luer cone of the syringe. The end of its inner wall has an inwardly recessed annular platform 03. Several grooves 04 and bosses 05 are also provided on the circumference of the annular platform 03. During installation, the bosses 05 lock the Luer cone, thus securing the Luer lock adapter. Furthermore, a specific viscosity of adhesive can be injected into the grooves 04. The uneven surface structure formed by the bosses 05 and grooves 04 also achieves capillary action, enabling efficient adsorption of adhesives, etc. This results in a high bonding capacity between the Luer lock adapter and the Luer cone of the syringe. Consequently, after the Luer lock adapter is assembled onto the explosion-proof pre-filled syringe, it exhibits high tensile strength and rotational torque resistance, ensuring structural stability and injection safety of the pre-filled syringe.

[0036] In some embodiments, the grooves 04 and the bosses 05 are staggered and evenly distributed on the inner wall of the ring platform 03.

[0037] Understandably, in order to make the connection between the Luer lock adapter and the Luer cone more stable and uniform, multiple bosses 05 and grooves 04 can be staggered and evenly arranged on the inner wall of the ring platform 03. In this way, there will be a groove 04 between every two adjacent bosses 05 for injecting adhesive. This can greatly enhance the connection strength between the Luer lock adapter and the Luer cone of the syringe, so that the Luer lock adapter has high pull-out resistance and rotational torque resistance after installation.

[0038] Of course, the specific way the boss 05 and the groove 04 are interspersed can be that one groove 04 is set between every two adjacent bosses 05, two grooves 04 are set between every two adjacent bosses 05, or one or more bosses 05 are set between every two adjacent grooves 04. This article does not make specific limitations here, as long as the expected effect can be achieved.

[0039] Preferably, there are three bosses 05, and two grooves 04 are provided between each pair of adjacent bosses 05, as shown in the following figure. Figure 2 As shown.

[0040] In this embodiment, based on the outer diameter of the actual syringe Luer cone and taking into account the assembly difficulty of the Luer lock adapter, the number of bosses 05 is preferably three, that is, the distance between two adjacent bosses 05 on the inner wall of the ring platform 03 is 120 degrees. Furthermore, in this embodiment, the number of grooves 04 is preferably six. Specifically, two grooves 04 are evenly arranged between each pair of adjacent bosses 05. This arrangement not only improves the connection strength of the Luer lock adapter, but also improves the convenience of its assembly.

[0041] Preferably, the end face of the boss 05 facing the Luer cone is an arc surface.

[0042] In this embodiment, considering the specific arrangement of the boss 05, as a preferred embodiment, the side of the boss 05 facing the Luer cone is set as an arc surface that can fit against its circumference. This arrangement allows the arc surface on the boss 05 to fit firmly against the Luer cone on the syringe, thereby increasing the bonding strength between the Luer lock adapter and the syringe.

[0043] Preferably, the recess depth or protrusion height of the groove 04 and the boss 05 based on the inner diameter of the ring 03 is 0.05-1mm.

[0044] In this embodiment, the groove 04 and the boss 05 are recessed inward or protruded outward based on the inner wall of the ring 03, but the size of the recess or protrusion is the same, preferably 0.05-1mm. This setting will not make the gap between the inner wall of the ring 03 and the Luer cone too large, which would cause the adhesive to drip or fail to play a capillary action to increase the bonding strength, nor will it make the gap too small so that the adhesive cannot be filled in.

[0045] Of course, the specific dimensions can be adjusted according to the viscosity and type of the actual adhesive, as well as the size of the Luer cone. This article does not impose specific limitations.

[0046] Preferably, the thickness of the ring platform 03 increases linearly toward the center, and the thickness of the ring platform 03 on the side near the Luhr cone head and along the axial direction is 1-3 mm.

[0047] Specifically, such as Figure 3 As shown, in this embodiment, the thickness of the ring platform 03 gradually increases towards its center, with the thinnest thickness at the beginning and the thickest thickness on its inner wall. Preferably, the thickness of the ring platform 03 on the side near the Luer cone head along the axial direction ranges from 1 to 3 mm. This design uses less material but maximizes the surface area of ​​the inner wall of the ring platform 03, thereby increasing its contact area with the Luer cone head and enhancing the bonding strength between the two. This reduces the manufacturing cost and weight of the Luer lock adapter.

[0048] Preferably, the housing 01 and the ring platform 03 are integrally formed by injection molding.

[0049] In this embodiment, in order to ensure the overall structural strength of the Luer lock adapter and to reduce its overall processing and manufacturing difficulty, the Luer lock adapter is integrally molded by injection molding.

[0050] Of course, the connection method between the housing 01 and the ring platform 03 can also be adjusted according to the actual situation, and this article does not make specific limitations.

[0051] Preferably, the cross-sectional shape of the groove 04 and the boss 05 is rectangular, trapezoidal or semi-circular.

[0052] Understandably, the cross-sectional shapes of the groove 04 and the boss 05 can also be adjusted according to actual needs. In this embodiment, the cross-sectional shape of the two is preferably rectangular, but it can also be semi-circular or wavy. This article does not make specific limitations on this.

[0053] Preferably, the shell 01 and the ring platform 03 are made of high-temperature resistant materials.

[0054] In this embodiment, the Luer lock adapter is preferably made of a high-temperature resistant material. This design can prevent it from deforming after high-temperature sterilization, which could cause it to become loosely connected to the syringe.

[0055] Preferably, a number of axial protrusions 06 are uniformly provided on the outer wall of the housing 01.

[0056] Specifically, such as Figure 1 and Figure 4 As shown, several parallel protrusions 06 are provided on the outer wall of the housing 01. These protrusions 06 are all parallel to the axis of the housing 01. This arrangement increases the surface friction of the adapter, making it easier for medical personnel to hold and preventing it from rotating, so that the Luer lock adapter can be installed on the syringe, thus improving its ease of use.

[0057] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A Luer lock adapter that can be strongly bonded to a pre-filled syringe, characterized in that, include: The housing (01) is cylindrical. The inner wall of the housing (01) is provided with a spiral groove for assembling a protective cap. One end of the inner wall of the housing (01) is provided with an annular platform (03). The inner wall of the annular platform (03) is provided with a plurality of grooves (04) and bosses (05). The bosses (05) are used to clamp the Luer cone of the syringe. The grooves (04) can be filled with adhesive liquid for connecting the Luer cone.

2. The Luer lock adapter according to claim 1, which can be strongly coupled with a pre-filled syringe, is characterized in that, The grooves (04) and the bosses (05) are staggered and evenly distributed on the inner wall of the ring platform (03).

3. The Luer lock adapter according to claim 2, which can be strongly bonded to a pre-filled syringe, is characterized in that, There are three bosses (05), and two grooves (04) are provided between each pair of adjacent bosses (05).

4. The Luer lock adapter according to claim 2, which can be strongly coupled with a pre-filled syringe, is characterized in that, The end face of the boss (05) facing the Luer cone is an arc surface.

5. The Luer lock adapter according to claim 2, which can be strongly coupled with a pre-filled syringe, is characterized in that, The recess depth or protrusion height of the groove (04) and the boss (05) based on the inner diameter of the ring (03) is 0.05-1mm.

6. The Luer lock adapter according to claim 1, which can be strongly coupled with a pre-filled syringe, is characterized in that, The thickness of the ring platform (03) increases linearly toward the center, and the thickness of the ring platform (03) on the side near the Luer cone and along its axial direction is 1-3 mm.

7. The Luer lock adapter according to claim 1, which can be strongly coupled with a pre-filled syringe, is characterized in that, The housing (01) and the ring platform (03) are integrally formed by injection molding.

8. The Luer lock adapter according to claim 1, which can be strongly coupled with a pre-filled syringe, is characterized in that, The cross-sectional shape of the groove (04) and the boss (05) is rectangular, trapezoidal or semi-circular.

9. The Luer lock adapter according to claim 1, which can be strongly coupled with a pre-filled syringe, is characterized in that, The shell (01) and the ring platform (03) are specifically made of high-temperature resistant materials.

10. The Luer lock adapter according to claim 1, which can be strongly coupled with a pre-filled syringe, is characterized in that, The outer wall of the housing (01) is uniformly provided with a number of axial protrusions (06).

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