A Luer lock adapter for prefilled syringes

Abstract

The present invention discloses a Luer lock adapter for prefilled syringes, which relates to the technical field of adapters and includes a connecting tube, a protective cover installed at one end of the connecting tube, a first filling pipe installed at the side of the protective cover away from the connecting tube, a second filling pipe installed at the side of the first filling pipe, a first injection pipe installed at the side below the diverter plate, a second injection pipe installed at the side of the first injection pipe, a second Luer lock assembly installed at the end of the second injection pipe away from the diverter plate, a third injection pipe installed at the side of the second injection pipe away from the first injection pipe, and a fourth injection pipe installed at the side of the third injection pipe away from the second injection pipe. The present invention adopts a Luer lock structure so that the device can be used with up to four different specifications of needles when filling liquid medicine, making it convenient to replace needles and avoiding leakage at the connection during filling, which would cause contamination of the liquid medicine.

Description

Technical Field

[0001] The present invention relates to the technical field of adapters, in particular to a Luer lock adapter for prefilled syringes. Background Art

[0002] When producing liquid medicine, glass bottles are mostly used for canning and sealing. Different liquid medicine filling machines are needed for filling. Liquid medicine filling machine is a kind of equipment suitable for pharmaceutical, chemical, food, light industry and other industries to use vacuum negative pressure and self-priming to fill glass, plastic, metal and other containers.

[0003] When filling liquid medicine, an adapter is needed to allow the use of glass bottles of different specifications for canning. The existing adapter has limited adjustment capacity when adjusting the specifications, and the connection is prone to leakage of liquid medicine, causing contamination of the liquid medicine.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a Luer lock adapter for prefilled syringes is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a Luer lock adapter for a prefilled syringe to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A Luer lock adapter for a prefilled syringe, comprising a connecting tube, a protective cover installed at one end of the connecting tube, and a diverter tray installed at the other end of the connecting tube, a first filling pipe installed at a side of the protective cover away from the connecting tube, a second filling pipe installed at a side of the first filling pipe, and a third filling pipe installed at a side of the second filling pipe away from the first filling pipe, a first injection pipe installed at a lower side of the diverter tray, and a first Luer lock assembly installed at the end of the first injection pipe away from the diverter tray, a second injection pipe installed at one side of the first injection pipe, and a second Luer lock assembly installed at the end of the second injection pipe away from the diverter tray, a third injection pipe installed at the side of the second injection pipe away from the first injection pipe, and a third Luer lock assembly installed at the end of the third injection pipe away from the diverter tray, a fourth injection pipe installed at the side of the third injection pipe away from the second injection pipe, and a fourth Luer lock assembly installed at the end of the fourth injection pipe away from the diverter tray.

[0007] Furthermore, the first filling pipe, the second filling pipe and the third filling pipe form a "mountain"-shaped structure, and a control valve is installed inside one end of the first filling pipe, the second filling pipe and the third filling pipe, and a connecting component is installed at the other end of the first filling pipe, the second filling pipe and the third filling pipe.

[0008] Furthermore, the connecting assembly includes a connecting cover, a one-way valve, a hinge, a straight rod, a retaining spring and a tension spring. A one-way valve is installed inside the connecting cover, and hinges are installed on both sides of the one-way valve. A straight rod is installed on the hinge, and a retaining spring is installed on the end of the straight rod away from the hinge, and a tension spring is installed on the side of the straight rod away from the one-way valve.

[0009] Furthermore, a first rotary valve is installed inside the protective cover, and the protective cover is connected to one end of the connecting pipe through the first rotary valve. At the same time, the protective cover forms a rotatable structure with the connecting pipe through the first rotary valve.

[0010] Furthermore, a second rotary valve is installed inside the diverter disc, and the diverter disc is connected to the other end of the connecting pipe through the second rotary valve. At the same time, the diverter disc and the connecting pipe form a rotatable structure through the second rotary valve.

[0011] Furthermore, a sealing ring is installed above the first injection pipe, and a replacement disk is installed below the first injection pipe, an injection connecting pipe is installed below the replacement disk, and a sealing joint is installed inside the replacement disk, first sealing rings are installed on both sides of the sealing joint, and the outer surface of the sealing joint and the inner surface of the first sealing ring are both threaded structures, and the injection connecting pipe penetrates into the interior of the replacement disk and is threadedly connected to the replacement disk through the sealing joint and the first sealing ring.

[0012] Furthermore, the first injection pipe, the second injection pipe, the third injection pipe and the fourth injection pipe have the same internal structure.

[0013] Furthermore, the first Luer lock assembly includes a Luer lock tube, a limiting ring, a Luer lock shell, a block and a needle. The Luer lock tube is installed inside the Luer lock shell, and a limiting ring is provided on the outside of the Luer lock tube. Blocks are installed on both sides of the limiting ring. A needle is installed at one end of the Luer lock tube, and the Luer lock tube extends deep into the interior of the injection connection tube. The tube side wall of the Luer lock tube and the interior of the limiting ring are both threaded structures, and the Luer lock tube and the limiting ring are threadedly connected.

[0014] Furthermore, the first Luer lock assembly, the second Luer lock assembly, the third Luer lock assembly and the fourth Luer lock assembly have the same structure.

[0015] The present invention provides a Luer lock adapter for a prefilled syringe, which has the following beneficial effects: the Luer lock structure enables the device to be used with up to four different specifications of needles when filling a liquid medicine, facilitating needle replacement and preventing leakage at the connection during filling, thereby preventing contamination of the liquid medicine;

[0016] The liquid medicine flows from the pre-filled syringe along the first filling pipe, the second filling pipe or the third filling pipe through the connecting pipe into the diversion disk for diversion. The device is provided with a first Luer lock assembly, a second Luer lock assembly, a third Luer lock assembly and a fourth Luer lock assembly. In actual use, it can be used for pre-filling operations on medicine bottles of four different specifications.

[0017] When it is necessary to replace a component of a different specification, the replacement tray is rotated by rotating the injection connecting pipe. Since the injection connecting pipe penetrates into the interior of the replacement tray and is threadedly connected to the replacement tray through the sealing joint and the first sealing ring, the injection connecting pipe and the first Luer lock assembly can be removed for replacement. The arrangement of the first sealing ring and the replacement tray can prevent leakage of the liquid medicine.

[0018] The first Luer lock assembly, the second Luer lock assembly, the third Luer lock assembly and the fourth Luer lock assembly adopt a Luer lock structure to prevent leakage of the drug solution when the needle is replaced, and a sealing structure is formed by threaded connection of the Luer lock pipe and the limit ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall front view of a Luer lock adapter for a prefilled syringe of the present invention;

[0020] Figure 2 This is a schematic diagram of a conveyor belt structure of a Luer lock adapter for prefilled syringes according to the present invention, viewed from above;

[0021] Figure 3 A Luer lock adapter for a prefilled syringe of the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0022] Figure 4 This is a schematic structural diagram of a crossbeam and a cutting barrel in a left-side cross-section of a Luer lock adapter for a prefilled syringe of the present invention;

[0023] Figure 5 The present invention is a schematic diagram of a cutaway left view of a Luer lock adapter for prefilled syringes.

[0024] In the figure: 1. Connecting pipe; 2. Protective cover; 3. Diverter plate; 4. First filling pipe; 5. Second filling pipe; 6. Third filling pipe; 7. Control valve; 8. Connecting assembly; 801. Connecting cover; 802. One-way valve; 803. Hinge; 804. Straight rod; 805. Circlip; 806. Tension spring; 9. First rotary valve; 10. Second rotary valve; 11. First injection pipe; 1101. Sealing ring; 1102. Replacement plate; 1103, injection connecting pipe; 1104, sealing joint; 1105, first sealing ring; 12, first Luer lock assembly; 1201, Luer lock pipe; 1202, limiting ring; 1203, Luer lock housing; 1204, blocking block; 1205, needle; 13, second injection pipe; 14, second Luer lock assembly; 15, third injection pipe; 16, third Luer lock assembly; 17, fourth injection pipe; 18, fourth Luer lock assembly. DETAILED DESCRIPTION

[0025] See also Figures 1 to 5 The present invention provides a technical solution: a Luer lock adapter for a prefilled syringe, comprising a connecting tube 1, a protective cover 2 is installed at one end of the connecting tube 1, and a diverter disk 3 is installed at the other end of the connecting tube 1, a first filling pipe 4 is installed on the side of the protective cover 2 away from the connecting tube 1, a second filling pipe 5 is installed on the side of the first filling pipe 4, and a third filling pipe 6 is installed on the side of the second filling pipe 5 away from the first filling pipe 4, a first injection pipe 11 is installed on the lower side of the diverter disk 3, and the first injection pipe 11, the end away from the diverter disk 3 is installed with a first A Luer lock assembly 12, a second injection pipe 13 is installed on one side of the first injection pipe 11, and a second Luer lock assembly 14 is installed on the end of the second injection pipe 13 away from the diverter disk 3, a third injection pipe 15 is installed on the side of the second injection pipe 13 away from the first injection pipe 11, and a third Luer lock assembly 16 is installed on the end of the third injection pipe 15 away from the diverter disk 3, a fourth injection pipe 17 is installed on the side of the third injection pipe 15 away from the second injection pipe 13, and a fourth Luer lock assembly 18 is installed on the end of the fourth injection pipe 17 away from the diverter disk 3.

[0026] The first filling pipe 4, the second filling pipe 5 and the third filling pipe 6 form a "mountain"-shaped structure, and a control valve 7 is installed inside one end of the first filling pipe 4, the second filling pipe 5 and the third filling pipe 6, and a connecting component 8 is installed at the other end of the first filling pipe 4, the second filling pipe 5 and the third filling pipe 6.

[0027] See also Figure 1 and Figure 3Specifically, the connecting assembly 8 includes a connecting cover 801, a one-way valve 802, a hinge 803, a straight rod 804, a retaining spring 805 and a tension spring 806. The one-way valve 802 is installed inside the connecting cover 801, and hinges 803 are installed on both sides of the one-way valve 802. A straight rod 804 is installed on the hinge 803, and a retaining spring 805 is installed on the end of the straight rod 804 away from the hinge 803. A tension spring 806 is installed on the side of the straight rod 804 away from the one-way valve 802. The filling pipe 5 and the third filling pipe 6 are connected to three prefilled syringes through the connecting component 8 for use. Specifically, the pipes of the prefilled syringes are inserted into the interior of the connecting cover 801 and connected to the one-way valve 802. The one-way valve 802 controls the switching of the first filling pipe 4, the second filling pipe 5 and the third filling pipe 6. After the pipes of the prefilled syringes are inserted into the connecting cover 801, the tension spring 806 supports the retaining springs 805 to approach each other so that the two retaining springs 805 are squeezed outward and fit tightly against the outer surface of the prefilled syringe pipes.

[0028] See also Figure 1 and Figure 2 Specifically, a first rotary valve 9 is installed inside the protective cover 2, and the protective cover 2 is connected to one end of the connecting pipe 1 through the first rotary valve 9. At the same time, the protective cover 2 and the connecting pipe 1 form a rotatable structure through the first rotary valve 9. A second rotary valve 10 is installed inside the diverter disk 3, and the diverter disk 3 is connected to the other end of the connecting pipe 1 through the second rotary valve 10. At the same time, the diverter disk 3 and the connecting pipe 1 form a rotatable structure through the second rotary valve 10, so that the protective cover 2 can prevent the outflow of the liquid when rotating with the diverter disk 3 through the connecting pipe 1.

[0029] See also Figure 1 and Figure 4 Specifically, a sealing ring 1101 is installed above the first injection pipe 11, and a replacement disk 1102 is installed below the first injection pipe 11, an injection connecting pipe 1103 is installed below the replacement disk 1102, and a sealing joint 1104 is installed inside the replacement disk 1102, and first sealing rings 1105 are installed on both sides of the sealing joint 1104, and the outer surface of the sealing joint 1104 and the inner surface of the first sealing ring 1105 are both threaded structures, and the injection connecting pipe 1103 penetrates into the interior of the replacement disk 1102 and is threadedly connected to the replacement disk 1102 through the sealing joint 1104 and the first sealing ring 1105.

[0030] The first injection pipe 11 , the second injection pipe 13 , the third injection pipe 15 and the fourth injection pipe 17 have the same internal structure.

[0031] See also Figure 1 and Figure 5Specifically, the first Luer lock assembly 12 includes a Luer lock pipe 1201, a limiting ring 1202, a Luer lock housing 1203, a block 1204 and a needle 1205. The Luer lock pipe 1201 is installed inside the Luer lock housing 1203, and a limiting ring 1202 is provided on the outside of the Luer lock pipe 1201. Blocks 1204 are installed on both sides of the limiting ring 1202. A needle 1205 is installed at one end of the Luer lock pipe 1201, and the Luer lock pipe 1201 is inserted into the injection port. The interior of the injection connecting pipe 1103, the pipe side wall of the Luer lock pipe 1201 and the interior of the limiting ring 1202 are both threaded structures, and the Luer lock pipe 1201 and the limiting ring 1202 are threadedly connected. The first Luer lock assembly 12, the second Luer lock assembly 14, the third Luer lock assembly 16 and the fourth Luer lock assembly 18 have the same structure, so that the device can avoid leakage of liquid medicine when replacing the needle 1205, and a sealing structure is formed by the threaded connection of the Luer lock pipe 1201 and the limiting ring 1202.

[0032] In summary, the Luer lock adapter for prefilled syringes can be used to connect three prefilled syringes via the first filling pipe 4, the second filling pipe 5, and the third filling pipe 6 through the connecting assembly 8. Specifically, the pipes of the prefilled syringes are inserted into the interior of the connecting cover 801 and communicate with the one-way valve 802. The one-way valve 802 controls the opening and closing of the first filling pipe 4, the second filling pipe 5, and the third filling pipe 6. After the pipes of the prefilled syringes are inserted into the connecting cover 801, the tension spring 806 supports the retaining springs 805 to approach each other, so that the two retaining springs 805 are squeezed outward and tightly fit on the outer surface of the pipes of the prefilled syringes.

[0033] When in use, the protective cover 2 can rotate with the diverter disc 3 through the connecting pipe 1. Since the diverter disc 3 is installed with a second rotary valve 10 inside, and the diverter disc 3 is connected to the other end of the connecting pipe 1 through the second rotary valve 10, and the diverter disc 3 and the connecting pipe 1 form a rotatable structure through the second rotary valve 10, the protective cover 2 can prevent the outflow of the liquid medicine when rotating with the diverter disc 3 through the connecting pipe 1.

[0034] The liquid medicine flows from the prefilled syringe along the first filling pipe 4, the second filling pipe 5 or the third filling pipe 6 through the connecting pipe 1 into the diverter plate 3 for diversion. The device is provided with a first Luer lock assembly 12, a second Luer lock assembly 14, a third Luer lock assembly 16 and a fourth Luer lock assembly 18. In actual use, it can be used for prefilling medicine bottles of four different specifications.

[0035] When it is necessary to replace components of different specifications, the replacement tray 1102 is rotated by rotating the injection connecting pipe 1103. Since the injection connecting pipe 1103 penetrates into the replacement tray 1102 and is threadedly connected to the replacement tray 1102 through the sealing joint 1104 and the first sealing ring 1105, the injection connecting pipe 1103 and the first Luer lock assembly 12 can be removed for replacement. The arrangement of the first sealing ring 1105 and the replacement tray 1102 can prevent leakage of the liquid medicine.

[0036] The first Luer lock assembly 12, the second Luer lock assembly 14, the third Luer lock assembly 16 and the fourth Luer lock assembly 18 adopt a Luer lock structure to prevent leakage of the drug solution when the needle 1205 is replaced. The Luer lock pipe 1201 and the limit ring 1202 are threadedly connected to form a sealing structure.

[0037] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A Luer lock adapter for a prefilled syringe, characterized in that: The invention comprises a connecting pipe (1), one end of the connecting pipe (1) is provided with a protective cover (2), and the other end of the connecting pipe (1) is provided with a diverter disc (3), a first filling pipe (4) is provided on the side of the protective cover (2) away from the connecting pipe (1), a second filling pipe (5) is provided on the side of the first filling pipe (4), and a third filling pipe (6) is provided on the side of the second filling pipe (5) away from the first filling pipe (4), a first injection pipe (11) is provided on the lower side of the diverter disc (3), and a first Luer lock assembly (12) is provided on the end of the first injection pipe (11) away from the diverter disc (3), and the first injection pipe (11) is provided with a first Luer lock assembly (12) and a second Luer lock assembly (13) is provided on the side of the second filling pipe (5) away from the first filling pipe (4). A second injection conduit (13) is installed on one side of the injection conduit (11), and a second Luer lock assembly (14) is installed on one end of the second injection conduit (13) away from the diverter disk (3); a third injection conduit (15) is installed on one side of the second injection conduit (13) away from the first injection conduit (11), and a third Luer lock assembly (16) is installed on one end of the third injection conduit (15) away from the diverter disk (3); a fourth injection conduit (17) is installed on one side of the third injection conduit (15) away from the second injection conduit (13), and a fourth Luer lock assembly (18) is installed on one end of the fourth injection conduit (17) away from the diverter disk (3); The first filling pipe (4), the second filling pipe (5) and the third filling pipe (6) form a "mountain"-shaped structure, and a control valve (7) is installed inside one end of the first filling pipe (4), the second filling pipe (5) and the third filling pipe (6), and a connecting assembly (8) is installed at the other end of the first filling pipe (4), the second filling pipe (5) and the third filling pipe (6); The connecting assembly (8) comprises a connecting cover (801), a one-way valve (802), a hinge (803), a straight rod (804), a retaining spring (805) and a tension spring (806); the one-way valve (802) is installed inside the connecting cover (801), and hinges (803) are installed on both sides of the one-way valve (802); the straight rod (804) is installed on the hinge (803), and the retaining spring (805) is installed on one end of the straight rod (804) away from the hinge (803); and the tension spring (806) is installed on the side of the straight rod (804) away from the one-way valve (802); A sealing ring (1101) is installed above the first injection pipe (11), and a replacement disk (1102) is installed below the first injection pipe (11), an injection connecting pipe (1103) is installed below the replacement disk (1102), and a sealing joint (1104) is installed inside the replacement disk (1102), first sealing rings (1105) are installed on both sides of the sealing joint (1104), and the outer surface of the sealing joint (1104) and the inner surface of the first sealing ring (1105) are both threaded structures, and the injection connecting pipe (1103) penetrates into the interior of the replacement disk (1102) and is threadedly connected to the replacement disk (1102) through the sealing joint (1104) and the first sealing ring (1105); The first Luer lock assembly (12) comprises a Luer lock tube (1201), a limiting ring (1202), a Luer lock shell (1203), a block (1204) and a needle (1205); the Luer lock tube (1201) is installed inside the Luer lock shell (1203), and a limiting ring (1202) is provided on the outside of the Luer lock tube (1201); blocks (1204) are installed on both sides of the limiting ring (1202); a needle (1205) is installed at one end of the Luer lock tube (1201), and the Luer lock tube (1201) extends into the interior of the injection connection tube (1103); the tube side wall of the Luer lock tube (1201) and the interior of the limiting ring (1202) are both threaded structures, and the tube side wall of the Luer lock tube (1201) and the limiting ring (1202) are threadedly connected.

2. A Luer lock adapter for a prefilled syringe according to claim 1, characterized in that: A first rotary valve (9) is installed inside the protective cover (2), and the protective cover (2) is connected to one end of the connecting pipe (1) through the first rotary valve (9). At the same time, the protective cover (2) and the connecting pipe (1) form a rotatable structure through the first rotary valve (9).

3. The Luer lock adapter for a prefilled syringe according to claim 1, characterized in that: A second rotary valve (10) is installed inside the diverter disc (3), and the diverter disc (3) is connected to the other end of the connecting pipe (1) through the second rotary valve (10). At the same time, the diverter disc (3) and the connecting pipe (1) form a rotatable structure through the second rotary valve (10).

4. The Luer lock adapter for a prefilled syringe according to claim 1, characterized in that: The first injection conduit (11), the second injection conduit (13), the third injection conduit (15) and the fourth injection conduit (17) have the same internal structure.

5. The Luer lock adapter for a prefilled syringe according to claim 1, characterized in that: The first Luer lock assembly (12), the second Luer lock assembly (14), the third Luer lock assembly (16) and the fourth Luer lock assembly (18) have the same structure.

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