Pre-filled quantitative injector for household powder injection

Abstract

The pre-encapsulation quantitative injector comprises a needle cylinder, a push rod and a push rod plug, the needle cylinder is internally provided with an injection cavity which is through front and back, the head end of the injection cavity is provided with an encapsulation connector, the tail end of the injection cavity is provided with the movable push rod, and the push rod plug is arranged at the tail end of the injection cavity. The head, arranged in the injection cavity, of the push rod is sleeved with the push rod plug; the head end of the needle cylinder is provided with an installation connector used for installing a needle head, and the installation connector is arranged on the outer side of the packaging connector in a wrapping mode. A sealing rubber plug is arranged on the inner side of the packaging connector, and liquid medicine is pre-filled and packaged between the sealing rubber plug and the push rod plug. And the inner diameter of the injection cavity is smaller than that of the mounting joint. According to the needle cylinder, by controlling the inner diameter size of the injection cavity in the needle cylinder, a user can conveniently and accurately grasp the medicine injection dosage after liquid medicine is mixed with medicine powder, and the needle cylinder structure matched with the universal two-end needle is designed according to the size of the injection cavity.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a pre-filled quantitative syringe for home use of powder injection. Background Technology

[0002] Syringes are commonly used medical devices. There are many different types of pre-filled syringes available. Basically, they have a solvent bottle and a solute bottle (water injection or powder injection). The two bottles are connected by needles at both ends to mix the medication. However, for home users, it is not possible to accurately determine the dosage. Utility Model Content

[0003] The purpose of this invention is to provide a pre-filled quantitative syringe for home use of powder injection. While ensuring that universally sized double-ended needles can be installed, the syringe allows users to accurately control the dosage of the drug after mixing the liquid and powder by controlling the inner diameter of the injection chamber.

[0004] To achieve the above objectives, this utility model proposes a pre-filled quantitative syringe for home use of powder injection, comprising a syringe, a plunger, and a plunger plug. The syringe has an injection chamber that runs through the front and back. The head end of the injection chamber is provided with a sealing connector, and the tail end of the injection chamber is provided with a movable plunger. The plunger plug is fitted onto the head of the plunger placed inside the injection chamber.

[0005] The syringe has a mounting connector at its tip for mounting a needle, which is wrapped around the outside of the encapsulation connector. The encapsulation connector has a sealing plug inside, and the sealing plug and the plunger plug are pre-filled with a drug solution. The inner diameter of the injection chamber is smaller than the inner diameter of the mounting connector.

[0006] Furthermore, in the pre-filled quantitative syringe for home-use powder injection, the horizontal height of the mounting connector is higher than the horizontal height of the encapsulation connector.

[0007] Furthermore, in the aforementioned pre-filled quantitative syringe for home-use powder injection, the injection chamber is a 1 ml specification size.

[0008] Furthermore, in the aforementioned pre-filled quantitative syringe for home-use powder injection, the syringe barrel consists of an injection chamber, an inner cylinder, a hollow cavity, and an outer cylinder, arranged from the inside out.

[0009] Furthermore, in the aforementioned pre-filled quantitative syringe for home use powder injection, the syringe includes an inner injection cylinder and an outer cover cylinder. The outer cover cylinder is fitted over the outside of the inner injection cylinder. The inner injection cylinder has the injection chamber inside. The inner injection cylinder has the sealing connector at its head end, and the outer cover cylinder has the mounting connector at its head end.

[0010] Furthermore, in the aforementioned pre-filled quantitative syringe for home use powder injection, the inner syringe tip is provided with an outer top abutment near the packaging connector, and the outer casing tip is provided with an inner top bottom that mates with the outer top abutment near the mounting connector.

[0011] Furthermore, in the aforementioned pre-filled quantitative syringe for home-use powder injection, the tail end of the inner injection cylinder is provided with a connecting abutment, which abuts against the outer side of the tail end of the outer casing cylinder, and the tail end of the outer casing cylinder is provided with a locking part for locking with the inner injection cylinder.

[0012] Furthermore, in the aforementioned pre-filled quantitative syringe for home-use powder injection, the inner injection cylinder is threadedly connected to the outer casing.

[0013] Furthermore, in the aforementioned pre-filled quantitative syringe for home-use powder injection, the inner and / or outer walls of the syringe are provided with quantitative graduations.

[0014] Furthermore, in the aforementioned pre-filled quantitative syringe for home-use powder injection, the mounting connector is threadedly connected to both needle ends.

[0015] Compared with the prior art, the beneficial effects of this utility model are mainly reflected in: by controlling the inner diameter of the injection chamber inside the syringe, it is convenient for users to accurately grasp the dosage of the drug after the drug solution is mixed with the drug powder, and the syringe structure is adapted to the size of the injection chamber and is compatible with the universal double-ended needle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pre-filled quantitative syringe for home-use powder injection in Embodiment 1 of this utility model;

[0017] Figure 2 This is a schematic diagram of the pre-filled quantitative syringe for home-use powder injection in Embodiment 2 of this utility model;

[0018] Figure 3 This is a schematic diagram of the pre-filled quantitative syringe for home-use powder injection in Embodiment 3 of this utility model;

[0019] Figure 4 This is a schematic diagram of the inner injection cylinder in Embodiment 3 of this utility model;

[0020] Figure 5 This is a schematic diagram of the outer cover cylinder in Embodiment 3 of this utility model. Detailed Implementation

[0021] The pre-filled quantitative syringe for home-use powder injection of this utility model will be described in more detail below with reference to the schematic diagram, which illustrates the preferred embodiment of this utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving the advantageous effects of this utility model. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit this utility model.

[0022] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and 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 device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or 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 according to the specific circumstances.

[0024] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0025] Example 1

[0026] like Figure 1 As shown, this utility model proposes a pre-filled quantitative syringe for home use of powder injection, including a syringe 1, a plunger 21 and a plunger plug 22. The syringe 1 has an injection chamber 11 that runs through the front and back. The head end of the injection chamber 11 is provided with a sealing connector 41, and the tail end of the injection chamber 11 is provided with a movable plunger 21. The head of the plunger 21, which is placed in the injection chamber 11, is fitted with a plunger plug 22; that is, one end of the plunger 21 moves in the injection chamber 11 through the fitted plunger plug 22, and the other end is placed outside the tail end of the injection chamber 11.

[0027] The syringe 1 has a mounting connector 42 for mounting a needle at its tip. The mounting connector 42 is placed on the outside of the sealing connector 41. The sealing connector 41 has a sealing plug 51 on its inner side. The sealing plug 51 and the push rod plug 22 are pre-filled with drug solution 52. The inner diameter of the injection chamber 11 is smaller than the inner diameter of the mounting connector 42.

[0028] Furthermore, the mounting connector 42 is threadedly connected to the two-pronged needle 6, and the horizontal height of the mounting connector 42 is higher than the horizontal height of the encapsulation connector 41 to avoid affecting the needle installation and to facilitate the alignment of the inner needle of the two-pronged needle 6 with the sealing plug 51 that penetrates the inner side of the encapsulation connector 41. That is, the outer side of the mounting connector 42 has external threads, and the inner side of the cap of the two-pronged needle 6 has internal threads for easy locking, and the two-pronged needle 6 adopts a universal-sized powder injection / water injection premixed injection two-pronged needle.

[0029] Furthermore, the injection chamber 11 is a 1 ml specification size with a diameter of approximately 6-1 mm, while the outer diameter of the syringe 1 is approximately 13-14 mm. This means the compatible double-ended needle 6 uses a 1 ml syringe needle, typically with a smaller diameter of approximately 0.33-0.6 mm. In this embodiment, the diameter of the double-ended needle 6 is 0.45 mm. Because the inner diameter of the injection chamber 11 is designed to be small, it is convenient for home use to calculate the actual amount of medication needed for injection. The outer diameter of the syringe 1 is a standard size, allowing for the installation of a universally sized double-ended needle 6 via the mounting connector 42 at the tip of the syringe 1.

[0030] Furthermore, the inner and / or outer walls of the syringe 1 are provided with quantitative graduations 9. That is, the quantitative graduations 9 provided on the inner wall of the injection chamber 11 and / or the outer wall of the syringe 1 are arranged in units of 0.1 mm, which makes it convenient for users to accurately identify and use the product, and avoid situations such as excessive dosage caused by uneven force.

[0031] Example 2

[0032] like Figure 2 As shown, this utility model proposes another pre-filled quantitative syringe for home use powder injection. The difference between this second embodiment and the first embodiment lies in the cylinder structure of the syringe 1. In this embodiment, the syringe 1 consists of an injection chamber 11, an inner cylinder 12, a cavity 13, and an outer cylinder 14 from the inside to the outside. The cavity 13, placed between the inner cylinder 12 and the outer cylinder 14, ensures the transparency of the syringe 1 without affecting the overall support rigidity, and can also reduce manufacturing costs.

[0033] Meanwhile, the syringe 1 is provided with a quantitative scale 9 on its inner wall and / or outer wall. That is, the quantitative scale 9 can be set on the inner or outer wall of the outer cylinder 14 and the inner or outer wall of the inner cylinder 12 respectively. Without affecting the user's vision, the dosage of the drug after the drug liquid 52 is mixed with the drug powder inside the injection cavity 11 can be clearly identified.

[0034] Example 3

[0035] like Figures 3 to 5 As shown, this utility model proposes another pre-filled quantitative syringe for home use powder injection. The difference between this embodiment and embodiment one is the cylinder structure of the syringe 1. In this embodiment, the syringe 1 includes a detachably connected inner injection cylinder 31 and an outer cover cylinder 32. The outer cover cylinder 32 is fitted outside the inner injection cylinder 31. The inner injection cylinder 31 is provided with an injection chamber 11. The head end of the inner injection cylinder 31 is provided with a sealing connector 41, and the head end of the outer cover cylinder 32 is provided with an installation connector 42.

[0036] Furthermore, such as Figures 3 to 5 As shown, the inner injection cylinder 31 has an outer top abutment 71 near the encapsulation connector 41 at its head end, and the outer cover cylinder 32 has an inner top bottom 72 near the mounting connector 42 at its head end, which cooperates with the outer top abutment 71. When the inner injection cylinder 31 is inserted into the outer cover cylinder 32, the outer top abutment 71 abuts against the inner top bottom 72, locking and limiting the two, ensuring that the encapsulation connector 41 and the mounting connector 42 are restricted in their position, and avoiding the situation where the two needles 6 cannot be accurately installed and used due to relative misalignment.

[0037] Furthermore, such as Figures 3 to 5 As shown, the inner injection cylinder 31 has a connecting abutment 81 at its tail end, which abuts against the outer side of the tail end of the outer casing 32. The tail end of the outer casing 32 has a locking part 82 for locking with the inner injection cylinder 31. When the inner injection cylinder 31 is inserted into the outer casing 32, the connecting abutment 81 can be held by hand to control the position of the inner injection cylinder 31 inside the outer casing 32, and the tail end of the inner injection cylinder 31 is locked with the locking part 82 at the tail end of the outer casing 32 to prevent the inner injection cylinder 31 from moving relative to the outer casing 32.

[0038] Furthermore, such as Figures 3 to 5 As shown, the inner injection cylinder 31 is threadedly connected to the outer cover cylinder 32, that is, the locking part 82 is provided with an internal thread, and the inner injection cylinder 31 is provided with an external thread near the connecting edge 81 for easy locking.

[0039] The syringe 1 has a quantitative scale 9 on its inner wall and / or outer wall. The quantitative scale 9 can be set on the inner wall or outer wall of the inner injection cylinder 31 and the inner wall or outer wall of the outer cover cylinder 32 respectively. Without affecting the user's vision, the amount of medicine inside the injection cavity 11 can be clearly identified.

[0040] In summary, the pre-filled quantitative syringe for home-use powder injection proposed in this embodiment allows users to accurately control the dosage of the injected medication after mixing the liquid and powder, by controlling the inner diameter of the injection chamber within the syringe and coordinating it with the amount of medication pre-filled inside the injection chamber. The syringe structure is designed to fit universal double-ended needles, utilizing the sealing and mounting connectors at the syringe tip to effectively fix and allow the double-ended needles to penetrate the sealing rubber stopper to draw the pre-filled liquid from the injection chamber, preventing leakage and effectively coordinating the double-ended needles to mix the required powder for injection.

[0041] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A pre-filled quantitative syringe for home use of powder injection, characterized in that, The syringe includes a syringe (1), a plunger (21), and a plunger plug (22). The syringe (1) has an injection chamber (11) that runs through the front and back. The injection chamber (11) has a sealing connector (41) at its head end and a movable plunger (21) at its tail end. The plunger plug (22) is fitted onto the head of the plunger (21) which is placed inside the injection chamber (11). The syringe (1) has a mounting connector (42) for mounting a needle at its head end. The mounting connector (42) is wrapped around the outside of the encapsulation connector (41). The encapsulation connector (41) has a sealing plug (51) on its inner side. The sealing plug (51) and the push rod plug (22) are pre-filled with a drug solution (52). The inner diameter of the injection chamber (11) is smaller than the inner diameter of the mounting connector (42).

2. The pre-filled quantitative syringe for home-use powder injection according to claim 1, characterized in that, The horizontal height of the mounting connector (42) is higher than the horizontal height of the encapsulation connector (41).

3. The pre-filled quantitative syringe for home-use powder injection according to claim 1, characterized in that, The injection chamber (11) is 1 ml in size.

4. The pre-filled quantitative syringe for home-use powder injection according to any one of claims 1 to 3, characterized in that, The syringe (1) consists of an injection chamber (11), an inner cylinder (12), a cavity (13), and an outer cylinder (14) from the inside out.

5. The pre-filled quantitative syringe for home-use powder injection according to any one of claims 1 to 3, characterized in that, The syringe (1) includes an inner injection cylinder (31) and an outer cover cylinder (32). The outer cover cylinder (32) is fitted outside the inner injection cylinder (31). The inner injection cylinder (31) has an injection chamber (11). The inner injection cylinder (31) has a sealing connector (41) at its head end. The outer cover cylinder (32) has an installation connector (42) at its head end.

6. The pre-filled quantitative syringe for home-use powder injection according to claim 5, characterized in that, The inner injection cylinder (31) has an outer top abutment (71) near the encapsulation connector (41) at its head end, and the outer cover cylinder (32) has an inner top bottom (72) near the mounting connector (42) at its head end, which cooperates with the outer top abutment (71).

7. The pre-filled quantitative syringe for home-use powder injection according to claim 5, characterized in that, The inner injection cylinder (31) has a connecting abutment (81) at its tail end, which abuts against the outer side of the tail end of the outer cover cylinder (32). The tail end of the outer cover cylinder (32) has a locking part (82) for locking with the inner injection cylinder (31).

8. The pre-filled quantitative syringe for home-use powder injection according to claim 7, characterized in that, The inner injection cylinder (31) is threadedly connected to the outer casing cylinder (32).

9. The pre-filled quantitative syringe for home-use powder injection according to claim 1, characterized in that, The syringe (1) has quantitative graduations (9) on its inner and / or outer walls.

10. The pre-filled quantitative syringe for home-use powder injection according to claim 1, characterized in that, The mounting connector (42) is threadedly connected to the two pins (6).

Images