Protector for needle-equipped syringe

Abstract

To provide a protector for a syringe with a needle capable of safely discarding the syringe with the needle.SOLUTION: The protector 10 of the syringe with needle 100 includes a hub 112 having the injection needle 111 at the tip part, and a syringe body 120 having a holding part 121 for holding the hub 112, wherein the protector 10 is formed in a bottomed cylindrical shape into which the injection needle 111 is inserted, a rib 12 locked to an outer surface of the syringe body 120 is formed on an inner circumferential part of the cylindrical body, and a sealing member 13 for sealing an opening of a tip end of the injection needle 111 by piercing the tip end of the injection needle 111 is provided on an inner bottom part of the cylindrical body.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a protector for a needle-equipped syringe. [Background technology]

[0002] A needle syringe is a medical device used to administer a liquid medicine to a patient. Generally, a needle syringe has a needle hub with a needle at its tip, a syringe body having a holder for holding the needle hub, and a plunger inserted into the syringe body (see, for example, Patent Document 1). Used needle syringes need to be safely disposed of. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2024-063042 Summary of the Invention [Problem to be solved by the invention]

[0004] Needle syringes are used for drugs that have a significant impact on the human body, such as anticancer drugs. If such drugs are exposed to the outside, they may vaporize, raising concerns that inhaling the vaporized drug could harm medical personnel. Therefore, in medical settings, used needle syringes are sometimes disposed of by being placed in a zipper bag. However, there is a risk that the zipper bag may be ruptured by the tip of the needle, causing the vaporized drug to contaminate the surrounding area.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a protector for a needle syringe that allows the syringe to be safely disposed of. [Means for solving the problem]

[0006] The protector for a needle syringe according to the present invention is a protector for a needle syringe having an injection needle hub with an injection needle at its tip, and a syringe body having a holding part that holds the injection needle hub, and is formed in a cylindrical shape with a bottom into which the injection needle is inserted, and a locking part that locks with the outer surface of the syringe body is formed on the inner peripheral part of the cylinder, and a sealing member is provided at the bottom of the cylinder that seals the opening at the tip of the injection needle when the tip of the injection needle is pierced through it.

[0007] According to the above configuration, when a needle syringe is inserted into the protector and disposed of, the tip of the needle is sealed, thereby reducing the risk of exposure to the external environment. Furthermore, the structure that engages with the syringe body rather than the needle hub prevents the protector from separating from the needle syringe when subjected to unintended external force. This allows the needle syringe to be safely disposed of. Furthermore, because the protector covers part of the syringe body, it is difficult to confuse it with a normal needle cap, preventing it from being mistaken for an unusable syringe. It is preferable that the outer surface of the syringe body that engages with the engaging portion be the outer surface of the coupler.

[0008] In the protector for a needle-equipped syringe according to the present invention, the locking portion is preferably formed by a plurality of ribs extending in the axial direction.

[0009] According to the above configuration, when the syringe body is inserted into the protector, the contact area with the outer surface of the syringe body can be reduced. This allows the syringe body to be inserted into the locking portion without any strain. As a result, it becomes easier to securely fix the needle-equipped syringe to the protector with little force.

[0010] In the protector for a needle-equipped syringe according to the present invention, it is preferable that it has a guide portion that guides the movement of the syringe body, and that the sealing member is positioned so that when the injection needle is inserted, it abuts against the injection needle after the syringe body has been guided by the guide portion.

[0011] According to the above configuration, the provision of the guide portion and the sealing member prevents the direction of the injection needle from bending as it pierces the sealing member. This makes it possible to prevent the injection needle from piercing the sealing member at a large angle from the axial center of the sealing member and breaking through the protector. The guide portion may be a locking portion.

[0012] In the protector for a needle-equipped syringe according to the present invention, it is preferable that a seat portion extending in a direction perpendicular to the axis is provided on the outer bottom portion of the cylinder.

[0013] According to the above configuration, the protector can be placed on its own on a desk and the needle-equipped syringe can be inserted into the protector, which allows the syringe to be inserted without the hand being positioned in front of the needle, thereby preventing needlestick injuries.

[0014] The protector for a needle syringe according to the present invention is a protector for a needle syringe comprising a syringe body having a needle hub with a needle at its tip, a coupler formed with a threaded portion that can be threaded onto the needle hub, and a barrel for containing a liquid, and is characterized in that the protector is formed in a cylindrical shape with a bottom into which the injection needle is inserted, the inner periphery of the cylinder is formed with a locking portion that locks with the outer surface of the syringe body, the bottom of the cylinder is provided with a sealing member that seals the opening at the tip of the injection needle when pierced by the tip of the injection needle, and is provided with a regulating portion that abuts against the tip of the barrel and regulates the insertion depth of the injection needle.

[0015] According to the above configuration, during the process of inserting the injection needle into the protector, the medical professional can feel that the injection needle is now protected, and it is possible to avoid a situation where the medical professional continues to push the injection needle with excessive force because they are unaware of the insertion depth of the injection needle. It is preferable that the outer surface of the syringe body that engages with the locking portion is the outer surface of the coupler. Furthermore, if the insertion depth of the injection needle that pierces the sealing member is set to 4 to 6 mm, the risk of the injection needle bending and piercing the protector can be reduced.

[0016] The protector for a needle-equipped syringe according to the present invention is a protector for a needle-equipped syringe that has an injection needle hub with an injection needle at its tip, and a syringe body that has a holding part that holds the injection needle hub, and is formed into a cylindrical shape with a bottom into which the injection needle is inserted, and the inner periphery of the cylinder is provided with a sealing part that comes into close contact with the outer surface of the syringe body, and when the injection needle is inserted, the syringe body is fixed in a pressed-in state.

[0017] According to the above configuration, the cylindrical inner peripheral portion of the protector is in close contact with the syringe body, sealing the protector and reducing the risk of exposure to the external environment. Furthermore, the structure that engages with the syringe body rather than the needle hub prevents the protector from separating from the needle syringe when subjected to unintended external force. This allows the needle syringe to be safely disposed of. It is preferable that the outer surface of the syringe body that is in close contact with the seal portion is the outer surface of the coupler. [Effects of the Invention]

[0018] The needle syringe protector of the present invention allows the needle syringe to be safely disposed of. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a front view showing a protector and a syringe with a needle according to an embodiment. [Figure 2] 1 is a cross-sectional view taken along the axial direction of a protector according to an embodiment, showing a state in which a needle syringe is inserted into the protector. [Figure 3] FIG. 1 is a perspective view showing a protector as an example of an embodiment. [Figure 4] FIG. 2 is a plan view showing a protector as an example of an embodiment. [Figure 5] 1 is a cross-sectional view taken along an axial direction of a protector according to an embodiment of the present invention; [Figure 6] FIG. 10 is a cross-sectional view taken along the axial direction showing a state in which a needle-equipped syringe is inserted into a protector that is another example of an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] An example of an embodiment of the present invention will be described in detail below. In the following description, specific shapes, materials, directions, numerical values, etc. are examples for facilitating understanding of the present invention, and can be appropriately changed according to the application, purpose, specifications, etc.

[0021] In the following, each member may be described according to the axial direction (arrow P in the figure), the axial direction (direction perpendicular to the axial direction, arrow D in the figure), and the circumferential direction (arrow R in the figure). Furthermore, the axial direction may be described according to the distal end or proximal end.

[0022] [Syringe with needle] A needle-equipped syringe 100 according to an embodiment will be described with reference to FIG.

[0023] The needle syringe 100 is a medical device that administers a medicinal liquid contained in a barrel 122 to a patient. A used needle syringe 100 is inserted into the protector 10 and discarded. This allows the needle syringe 100 to be safely discarded, as will be described in detail later.

[0024] The needle syringe 100 has a needle hub 110 having a needle 111 at its tip, a syringe body 120 having a holder 121 for holding the needle hub 110 , and a plunger 130 inserted into the syringe body 120 .

[0025] The injection needle hub 110 has an injection needle 111 and a hub 112. The injection needle 111 extends parallel to the central axis of the needle syringe 100. The injection needle 111 has a hollow portion extending in the axial direction. The tip of the injection needle 111 is sharply pointed.

[0026] The hub 112 is formed in a substantially conical shape and has a hollow portion extending in the axial direction. The injection needle 111 is fixed to the tip portion, and the hollow portion of the injection needle 111 and the hollow portion of the hub 112 are in communication with each other. A flange portion is formed at the base end portion, and by screwing into a holding portion 121 (described later), the injection needle hub 110 is detachably held in the syringe body 120.

[0027] The syringe body 120 has a holding portion 121 that holds the injection needle hub 110, and a barrel 122 that contains a medicinal solution and has an inner surface on which the plunger 130 slides. The holding portion 121 has a male luer that is inserted into the hollow portion of the hub 112 and communicates with the hollow portion of the injection needle 111, and a cylindrical coupler that is formed on the outside of the male luer and has a helical thread portion formed on the inner periphery. With the male luer inserted into the hollow portion of the hub 112, the syringe body 120 holds the injection needle hub 110 by screwing the coupler into a flange portion of the hub 112.

[0028] The holding portion is not limited to the configuration of this embodiment. For example, if the injection needle hub has a female thread, the holding portion may be a male thread that screws into the female thread. Furthermore, the coupler may be a fixed lock that is fixed so as not to rotate relative to the barrel 122, or a free lock that allows relative rotation.

[0029] The barrel 122 contains a medicinal solution. The barrel 122 is formed in a cylindrical shape extending along the axial direction. An opening is formed at the base end of the barrel 122, and a flange portion is formed around the opening. The outer diameter of the barrel 122 is larger than the outer diameter of the holding portion 121. The barrel 122 is made of a transparent or translucent resin such as polypropylene.

[0030] The plunger 130 is fitted into the barrel 122 from the other end side thereof. The plunger 130 extends in the axial direction. A gasket is provided on the tip side of the plunger 130. The gasket is made of an elastic material such as vulcanized rubber or thermoplastic elastomer. The gasket is in sliding contact with the inner peripheral surface of the barrel 122. A rod flange portion is provided on the rear end of the plunger 130. Portions of the plunger 130 other than the gasket are made of resin such as polypropylene. The gasket may be molded from resin and the plunger may be formed as a single part.

[0031] [Protector] A protector 10 as an example of an embodiment will be described with reference to FIGS.

[0032] A used needle syringe 100 is inserted into the protector 10, and the protector 10 is discarded together with the used needle syringe 100. This allows the needle syringe 100 to be safely disposed of while preventing external exposure of drugs, etc., as will be described in detail below. Furthermore, the protector 10 does not require installation space, unlike the disposal box used to dispose of the needle syringe 100. The protector 10 can be stored in a small portable box, such as a first aid kit. For this reason, it is expected that the protector 10 will also be used for emergency use in addition to drug applications such as anticancer drugs.

[0033] The protector 10 has a main body 11 formed in a cylindrical shape with a bottom into which an injection needle 111 is inserted, a locking portion (rib 12) formed on the cylindrical inner periphery of the main body 11 that locks with the outer surface of the syringe main body 120, a restricting portion (open end 11A of the main body 11) that abuts against the tip end of the barrel 122 and restricts the insertion depth of the injection needle 111, a sealing member 13 provided on the cylindrical bottom of the main body 11 that seals the opening at the tip of the injection needle 111 when the tip of the injection needle 111 is inserted into it, and a pedestal portion 14 provided on the cylindrical bottom of the main body 11 and extending in a direction perpendicular to the axis. All parts of the protector 10 other than the sealing member 13 are formed by integral molding from transparent or translucent resin such as polypropylene.

[0034] [Main unit] The main body 11 is a portion into which the injection needle hub 110 is inserted. More specifically, the main body 11 is a portion that covers the injection needle hub 110 and the tip end of the syringe main body 120. The main body 11 is formed in a cylindrical shape with a bottom.

[0035] The axial length and inner diameter (opening diameter) of the cylinder of the main body 11 vary depending on the needle syringe 100 to be inserted. The axial length of the cylinder of the main body 11 is longer than the axial length of the injection needle hub 110. The inner diameter of the cylinder of the main body 11 is set to a diameter that allows the holding portion 121 of the syringe body 120 to be inserted.

[0036] The main body 11 of the present invention is not limited to the cylindrical shape described above, and may be a polygonal cylindrical shape such as a hexagonal cylindrical shape or an octagonal cylindrical shape.

[0037] [Latching part] The locking portion is a portion that locks with the outer peripheral surface of the syringe body 120. More specifically, the locking portion of this embodiment locks with the outer peripheral surface of the coupler of the holding portion 121 of the syringe body 120 by frictional force. The locking portion of this embodiment is a plurality of ribs 12 (six in this embodiment) formed along the axial direction, as will be described in detail later.

[0038] If the locking portion only engages with the needle hub 110, there is a risk that the needle hub 110 and the syringe body 120 will separate due to an external force. However, the structure in which the locking portion engages with the syringe body 120 can prevent unintended separation of the needle hub 110 and the syringe body 120. Furthermore, the structure that engages with the syringe body 120 can increase the locking force compared to when the protector 10 engages with the conical hub 112, preventing the protector 10 from separating from the needle-equipped syringe 100 when subjected to an unintended external force. This allows the needle-equipped syringe 100 to be safely disposed of. Furthermore, because the protector 10 covers a portion of the syringe body 120, it is visually distinguishable from a regular needle cap that covers the unused needle 111 and fits over the hub 112, reducing the likelihood of confusion in medical settings. This prevents a used device from being mistaken for a used one.

[0039] Furthermore, the locking portion has a structure that locks with the syringe body 120, so that the opening of the body 11 becomes larger, making it easier to insert the needle-equipped syringe 100 into the protector .

[0040] Furthermore, as described above, a helical thread is formed on the inner peripheral surface of the coupler, so the coupler has greater strength than the barrel 122. Therefore, the structure in which the outer peripheral surface of the strong coupler and the locking portion lock together reduces the risk of damage to the syringe body 120 even if the syringe body 120 is pressed into the protector 10 with a strong force. Therefore, the protector 10 and the syringe body 120 can be designed to be firmly locked together.

[0041] As described above, the locking portion in this embodiment is a plurality of ribs 12 (six in this embodiment) formed along the axial direction. The number of ribs 12 is not particularly limited. The ribs 12 are formed from the open end 11A of the main body 11. The axial length of the ribs 12 is preferably 20% or more of the axial length of the tubular interior of the protector 10, and particularly preferably 50% or more. The axial length of each rib 12 is the same. Each rib 12 is formed at equal intervals in the circumferential direction. The thickness and width of each rib 12 are constant. The inner surface of the wall between the ribs 12 is tapered so as to widen outward toward the opening side, and the thickness is formed so as to gradually decrease toward the opening side.

[0042] The ribs 12 can reduce the contact area with the outer surface of the syringe body 120 when the syringe body 120 is inserted into the protector 10. This allows the syringe body 120 to be inserted into the protector 10 with less force. As a result, the insertion distance can be increased, making it difficult for the syringe to separate due to external forces from the side, and making it easier to firmly fix the needle-equipped syringe 100 to the protector 10. Furthermore, the long insertion distance can give the user a sense of having pressed it in.

[0043] The corners on the base end side (opening side) of each rib 12 are chamfered. This makes it easier for the tip side of the syringe body 120 to smoothly fit between the ribs 12 when inserting the needle syringe 100 into the protector 10. The length of the ribs 12 in the direction perpendicular to the axis may decrease toward the tip side in the axial direction. In other words, the diameter formed by the rib 12 (diameter of the locking portion) may be tapered toward the tip side.

[0044] The locking portion of the present invention is configured to lock with the outer peripheral surface of the holding portion 121, but is not limited to this. The locking portion of the present invention may also lock with the outer peripheral surface of the barrel 122. Furthermore, the locking portion of the present invention is not limited to the multiple (six in this embodiment) ribs 12 formed along the axial direction, but may be, for example, multiple protrusions or a smooth inner surface. The ribs of the present invention are ribs extending in the axial direction, but may also be ribs formed along the circumferential direction, or ribs extending in both the axial and circumferential directions.

[0045] The locking portion of the present invention also functions as a guide portion that guides the movement of the syringe body 120. The sealing member 13 is disposed at a position that abuts against the injection needle 111 after the syringe body 120 has been guided by the guide portion when the injection needle 111 is inserted, and prevents the direction of advance of the injection needle 111 from changing significantly as the injection needle 111 pierces the sealing member 13. This reduces the risk that the injection needle 111 will pierce the sealing member 13 at a large angle from the axial center of the sealing member 13 or that the injection needle 111 will be bent midway during insertion, causing the injection needle 111 to come into contact with and break through the wall of the protector 10. The guide portion may be provided in a separate portion from the locking portion.

[0046] [Regulation Department] The restricting portion is a portion that abuts against at least a part of the tip end of the barrel 122 to restrict the insertion depth of the injection needle 111, and is formed on the protector 10. More specifically, the restricting portion is an opening end 11A that forms the end face of the main body 11 of the protector 10, and abuts against the outer peripheral edge of the tip end of the barrel 122 to restrict the insertion depth of the injection needle 111. The restricting portion in this embodiment is the opening end 11A on the base end side of the main body 11.

[0047] The regulating section allows the medical staff to feel that the injection needle 111 is now protected during the process of inserting the injection needle 111 into the protector 10, and prevents the medical staff from continuing to push the injection needle 111 in with too much force because they are not sure how deep the injection needle 111 has been inserted.

[0048] The restricting portion of the present invention is not limited to the above-described open end 11A of the main body 11. The restricting portion of the present invention may be an annular protrusion formed on the cylindrical inner periphery of the main body 11, or a plurality of protrusions arranged along the annular shape, which restricts the insertion depth by coming into contact with a part of the tip of the coupler.

[0049] [Sealing member] The sealing member 13 is a part that seals the opening at the tip of the injection needle 111 when the tip of the injection needle 111 is inserted into it. The sealing member 13 is provided at the bottom of the cylindrical interior of the main body 11. The sealing member 13 is preferably made of a flexible material. The sealing member 13 may be made of a material such as silicone or rubber.

[0050] The sealing member 13 seals the tip of the injection needle 111 when the needle-equipped syringe 100 is inserted into the protector 10 and then discarded, thereby reducing the risk of exposure to the external environment. Note that if the insertion depth of the injection needle 111 that is inserted into the sealing member 13 is set to 4 to 6 mm, the risk of the injection needle 111 bending and piercing the protector 10 can be reduced.

[0051] The axial length of the sealing member 13 is preferably 17% or more and 41% or less of the axial length of the cylindrical interior of the protector 10 (main body 11). For example, if the exposed length of the injection needle 111 is 1 / 2 inch, the axial length of the sealing member 13 is preferably 36 to 41% of the axial length of the cylindrical interior of the protector 10 (main body 11), and if it is 1 inch, the axial length of the sealing member 13 is preferably 17 to 22% of the axial length of the cylindrical interior of the protector 10 (main body 11).

[0052] [Base] The base 14 is a portion that allows the main body 11 to stand on its own. The base 14 is provided on the outer bottom of the main body 11. The base 14 extends in a direction perpendicular to the axis. The base 14 is formed in a hollow, approximately octagonal pyramid shape. The hollow portion of the base 14 is formed in a roughly conical shape. A gap is formed between the base 14 and the bottom, allowing the shapes of the bottom and base 14 to be manufactured with high precision. The bottom has an inner surface that expands toward the opening side, allowing the sealing member 13 to be filled efficiently. The protector 10 stands on its own using the bottom surface of the base 14 and the bottom surface of the main body 11.

[0053] The base 14 allows the protector 10 to stand on its own on a desk and the needle syringe 100 to be inserted into the protector 10. This allows the needle 111 to be inserted without the hand being positioned in front of it, thereby preventing needlestick injuries. Furthermore, the base 14 is cylindrical and the sealing member 13 is located inside, so the center of gravity can be located below the connection point between the base 14 and the main body 11, making it less likely to tip over when the needle syringe 100 is inserted.

[0054] The base of the present invention is not limited to the hollow, approximately octagonal pyramid shape described above. The base of the present invention may be, for example, a hollow polygonal pyramid shape such as a hollow quadrangular pyramid shape, or a hollow cone shape. Furthermore, the base of the present invention may be, for example, a plate shape parallel to the axis-perpendicular direction.

[0055] [Other embodiments] A protector 20 as another example of the embodiment will be described with reference to FIG.

[0056] A used needle syringe 100 is inserted into the protector 20, and the protector 20 is discarded together with the used needle syringe 100. This allows the needle syringe 100 to be safely disposed of, similar to the protector 10. Furthermore, the protector 20 can be stored in a small portable box, such as a first aid kit.

[0057] The protector 20 has a main body 21 formed in a cylindrical shape with a bottom into which the injection needle 111 is inserted, a seal portion provided on the cylindrical inner periphery of the main body 21 and in close contact with the outer periphery of the syringe body 120, and a base portion 24 extending in the direction perpendicular to the axis. The main body 21 and the base portion 24 have the same configuration as the main body 11 described above, and therefore their description will be omitted.

[0058] The sealing portion in this embodiment is, for example, an O-ring 22. The O-ring 22 may be fitted into a groove in the main body 21. The O-ring 22 can seal the gap between the syringe main body 120 and the cylindrical inner circumferential portion of the protector 20. Furthermore, when the injection needle 111 is inserted, the syringe main body 120 is fixed in a press-fit state.

[0059] According to the protector 20, the cylindrical inner peripheral portion of the protector 20 comes into close contact with the syringe body 120, sealing the protector 20 and reducing the risk of exposure to the external environment. This allows the needle-fitted syringe 100 to be safely disposed of. Furthermore, the structure that engages with the syringe body 120 rather than the hub 112 makes it possible to distinguish between syringes that have not yet been used, preventing a situation in which a used syringe is mistaken for an unusable one.

[0060] It should be noted that the present invention is not limited to the above-described embodiment and its modifications, and various changes and modifications are possible within the scope of the claims of this application. [Explanation of symbols]

[0061] 10 protector, 11 main body, 11A opening end (regulating portion), 12 rib (locking portion), 13 sealing member, 14 base portion, 20 protector, 21 main body, 22 O-ring, 24 base portion, 100 syringe with needle, 110 injection needle hub, 111 injection needle, 112 hub, 120 syringe main body, 121 holding portion, 122 barrel, 130 plunger

Claims

1. A protector for a needle-equipped syringe, the protector comprising: a needle hub having a needle at a tip end; and a syringe body having a holding portion for holding the needle hub, The syringe is formed into a cylindrical shape with a bottom into which the injection needle is inserted, a locking portion that locks with the outer surface of the syringe body is formed on the cylindrical inner peripheral portion; a sealing member is provided at the bottom of the cylinder, the sealing member being inserted with the tip of the injection needle to seal the opening at the tip of the injection needle; Protector for syringes with needles.

2. 2. The needle syringe protector according to claim 1, The locking portion is formed by a plurality of ribs extending in the axial direction. Protector for syringes with needles.

3. 3. The protector for a needle-equipped syringe according to claim 1 or 2, a guide portion for guiding the movement of the syringe body; the sealing member is disposed at a position where it comes into contact with the injection needle after the syringe body is guided by the guide portion when the injection needle is inserted. Protector for syringes with needles.

4. 2. The needle syringe protector according to claim 1, A base portion extending in the direction perpendicular to the axis is provided on the outer bottom portion of the cylinder. Protector for syringes with needles.

5. A protector for a needle-equipped syringe comprising a syringe body having a needle hub having a needle at its tip, a coupler formed with a threaded portion that can be threadedly engaged with the needle hub, and a barrel that contains a liquid, The syringe is formed into a cylindrical shape with a bottom into which the injection needle is inserted, a locking portion that locks with the outer surface of the syringe body is formed on the cylindrical inner peripheral portion; a sealing member that is inserted into the bottom of the cylinder and seals the opening at the tip of the injection needle; a restricting portion that abuts against the tip end of the barrel and restricts the insertion depth of the injection needle; Protector for syringes with needles.

6. A protector for a needle-equipped syringe, the protector comprising: a needle hub having a needle at a tip end; and a syringe body having a holding portion for holding the needle hub, The syringe is formed into a cylindrical shape with a bottom into which the injection needle is inserted, a seal portion that is in close contact with the outer surface of the syringe body is provided on the cylindrical inner peripheral portion; When the injection needle is inserted, the syringe body is fixed in a press-fit state. Protector for syringes with needles.

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