KR20220131666A - Syringe - Google Patents

Abstract

The present invention relates to a syringe. According to an embodiment of the present invention, the syringe comprises: a barrel in which a storage space in which a chemical solution is stored is defined, and an injection hole communicating with the storage space is formed at one end of the barrel; a needle for storing a chemical solution in the storage space or injecting a chemical solution stored in the storage space; a needle hub coupled to the barrel in a state in which the needle is fixed; and a plunger moving with respect to the storage space to store a chemical solution in the storage space through the needle or to inject the chemical solution stored in the storage space. With the needle hub coupled to the barrel, an inner end of the needle is positioned on the injection hole, and the plunger moves relative to the storage space until a tip thereof touches the injection hole. The syringe is configured to prevent unnecessary disposal of the chemical solution.

Description

Syringe {SYRINGE}

The present invention relates to a syringe.

A syringe is a device for injecting a chemical solution supplied therein into a living tissue, and a barrel in which the chemical solution is stored, a needle storing the chemical solution in the barrel or injecting the chemical solution stored in the barrel into the living tissue, and a needle connecting the barrel and the needle and a plunger that moves relative to the barrel to store the chemical solution in the barrel or inject the chemical solution stored in the barrel through the hub and the needle. In general, one end of the barrel is provided with a tip for coupling with the needle hub, and the needle hub to which the needle is fixed is coupled to the tip.

Typically, the tip and the needle hub are each formed in a hollow cylindrical shape, and the tip is inserted into the needle hub and coupled to each other. And when the tip and the needle hub are coupled, the inner end of the needle fixed to the needle hub is positioned adjacent to the tip of the tip. Therefore, in the prior art, there is a problem that the chemical solution remaining inside the needle hub is not injected through the needle and is discarded. In particular, in conjunction with the recent shortage of the COVID-19 vaccine, the disadvantage that a part of the drug solution is not used and discarded due to the structural problem of the syringe is further highlighted.

Republic of Korea Patent Publication No. 1991-0015315 (Name: Disposable syringe) Republic of Korea Patent No. 0973738 (Name: Injection liquid capsule consisting of a tube body that can be injected directly mounted on a syringe) Republic of Korea Registered Utility Model No. 0487150 (Name: Cannula with excellent needle binding area)

The present invention is to solve the problems caused by the prior art as described above, and an object of the present invention is to provide a syringe configured to prevent unnecessary disposal of a chemical solution.

One aspect of the syringe according to an embodiment of the present invention for achieving the above object, a storage space for storing a chemical therein is defined, and an injection hole communicating with the storage space is formed at one end of the barrel; a needle for storing the chemical solution in the storage space or injecting the chemical solution stored in the storage space; a needle hub coupled to the barrel in a state in which the needle is fixed; and a plunger that moves with respect to the storage space to store the chemical solution in the storage space or inject the chemical solution stored in the storage space through the needle. Including, in a state in which the needle hub is coupled to the barrel, the inner end of the needle is positioned on the injection hole, and the plunger moves with respect to the storage space while the tip is in contact with the injection hole .

In one aspect of the embodiment of the present invention, the needle hub may include: an inner coupling part whose outer surface is in contact with the inner surface of a hollow tip extending so that one end communicates with the injection hole from one end of the barrel; and an outer coupling part whose inner surface is in contact with the outer surface of the tip and whose tip is positioned on the injection hole; Including, a tip insertion space into which the tip is inserted is defined by the inner surface of the inner coupling part and the outer surface of the outer coupling part.

In one aspect of the embodiment of the present invention, the inner and the inner coupling portion of the tip is formed in a cone shape that is mated to each other.

In one aspect of the embodiment of the present invention, the inner surface of the tip and the outer surface of the inner coupling portion are formed to be tapered to fit each other.

In one aspect of the embodiment of the present invention, the outer surface of the tip and the inner surface of the inner coupling portion or the inner surface of the tip and the inner surface of the outer coupling portion, one of which is inserted into the other fastening protrusions and fastening grooves are formed.

In one aspect of the embodiment of the present invention, the needle insertion space into which the needle is inserted is defined by the inner surface of the inner coupling part, and at the tip of the inner coupling part, the inner end of the needle inserted into the needle insertion space is the injection hole A connection hole positioned to be in contact with the injection hole is formed so as to be positioned on it.

In one aspect of the embodiment of the present invention, the needle is fixed by an adhesive in a state inserted into the needle insertion space.

Another aspect of the embodiment of the present invention is that an injection hole for storing a chemical solution or injecting a chemical solution stored in the storage space is formed in a storage space formed therein, and a hollow tip extending so that the injection hole and one end thereof communicate with each other. a barrel provided; a needle for storing the chemical solution in the storage space or injecting the chemical solution stored in the storage space; a needle hub coupled to the barrel to connect the needle to the barrel; and a plunger moving with respect to the storage space for storage or injection of the drug solution through the needle. In the syringe comprising: the needle hub, formed in a shape to fit the tip, the tip insertion space into which the tip is inserted; and a needle insertion space into which the needle is inserted. This is defined, and in a state in which the tip and the needle are inserted into the tip insertion space and the needle insertion space, respectively, the inner end of the needle is located on the injection hole, and the plunger is a position where the tip abuts the injection hole The pinch moves against the storage space.

In another aspect of the embodiment of the present invention, the tip insertion space is defined by the inner surface of the inner coupler whose outer surface is in contact with the inner surface of the tip and the outer surface of the outer coupler whose inner surface is in contact with the outer surface of the tip.

In another aspect of the embodiment of the present invention, the needle insertion space is defined by the inner surface of the inner coupling portion, and the needle is formed at the tip of the inner coupling portion and is positioned in contact with the inner end of the needle. through the injection hole.

In another aspect of the embodiment of the present invention, the needle is fixed by an adhesive in a state inserted into the needle insertion space.

In another aspect of the embodiment of the present invention, the inner surface of the tip and the outer surface of the inner coupling portion are tapered to be mated with each other, so that the inside and the inner coupling portion of the tip are formed in a cone shape to be mated with each other.

In another aspect of the embodiment of the present invention, the outer surface of the tip and the inner surface of the inner coupling portion or the inner surface of the tip and the inner surface of the outer coupling portion, one of which is inserted into the other fastening protrusions and fastening grooves are formed.

In the syringe according to the embodiment of the present invention, the inner end of the needle is located on the injection hole. In particular, in the embodiment of the present invention, one side of the needle hub to which the needle is fixed, the tip of the substantially inner coupling portion is located on the injection hole, so that the relative position with respect to the barrel can exactly match the designed position. Therefore, according to an embodiment of the present invention, since the space in which the drug solution remains inside the needle hub is not defined, a part of the drug solution is not discarded during the injection process of the drug solution, and all of the drug solution stored in the storage space can be injected. .

1 is a cross-sectional view showing a state in which a syringe according to an embodiment of the present invention is disassembled. Figure 2 is a cross-sectional view showing an assembled state of the embodiment of the present invention.

Hereinafter, a syringe according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a disassembled state of the syringe according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing an assembled state of the embodiment of the present invention.

1 and 2, the syringe 1 according to an embodiment of the present invention includes a barrel 100, a needle 200, a needle hud 300, a plunger 400 and a cap (C1). . In particular, in this embodiment, the phenomenon in which the chemical solution is discarded in the process of injecting the chemical solution by the relative position of the needle 200 with respect to the barrel 100 and the shape of the needle hud 300 can be prevented.

More specifically, the barrel 100 may be formed, for example, in a hollow cylindrical shape. At this time, one end of the barrel 100 is shielded and the blocking is opened, thereby defining a storage space 100S in which the chemical solution is stored in the barrel 100 .

And an injection hole 101 is formed at one end of the barrel 100 . The injection hole 101 is a place where the chemical solution is stored in the storage space 100S or the chemical solution stored in the storage space 100S is injected, and one end of the barrel 100 may be cut and defined.

In addition, the barrel 100 is provided with a tip 110 . The tip 110, from one end of the barrel 100, extends, for example, in a hollow cylindrical shape. Substantially, as the tip 110 extends from the outer periphery of the injection hole 101 , one end of the tip 110 communicates with the injection hole 101 .

In this embodiment, the inside of the tip 110 is formed in a cone shape. Substantially, as the thickness of the tip 110 decreases from its base toward the tip, the inside of the tip 110 may be formed in a cone shape with an increased diameter from the base of the tip 110 toward the tip. . This is to guide the coupling of the inner coupling part 310 while the needle hud 300 is coupled to the tip 110, as will be described later.

A first fastening groove 111 is formed on an inner surface of the tip 110 , and a second fastening protrusion 112 is provided on an outer surface of the tip 110 . The first fastening groove 111 and the second fastening protrusion 112 are for securing a fastening force with the needle hud 300 . The first fastening groove 111 and the second fastening protrusion 112 are disposed to be spaced apart from each other in the longitudinal direction of the tip 110 . For example, the first fastening groove 111 may be defined such that one side of the inner surface of the tip 110 adjacent to the base of the tip 110 is depressed in the circumferential direction thereof. In addition, the second fastening protrusion 112 may be defined such that one side of the outer surface of the tip 110 adjacent to the tip of the tip 110 protrudes in the circumferential direction thereof. Of course, the first fastening groove 111 may be formed on the outer surface of the tip 110 , and the second fastening protrusion 112 may be formed on the inner surface of the tip 110 .

Next, the needle 200 is a place for storing the chemical solution in the storage space (100S) or injecting the chemical solution stored in the storage space (100S). In particular, in this embodiment, the inner end of the needle 200 is located on the injection hole 101 so that all of the chemical stored in the storage space (100S) can be injected through the needle (200).

The needle hud 300 is coupled to the barrel 100, substantially the tip 110 in a state in which the needle 200 is fixed. In this embodiment, the needle hud 300 is formed such that, in a state coupled to the tip 110 , a space is not defined between or within the tip 110 .

In more detail, the needle hud 300 includes an inner coupling portion 310 and an outer coupling portion 320 . The outer surface of the inner coupling part 310 is in contact with the inner surface of the tip 110 , and the inner surface of the outer coupling part 320 is in contact with the outer surface of the tip 110 . Substantially, the tip insertion space 300S into which the tip 110 is inserted is defined by the inner surface of the inner coupling part 310 and the inner surface of the outer coupling part 320 . In addition, a needle insertion space 302S into which the needle 200 is inserted is defined by the inner surface of the inner coupling part 310 . For example, the inner coupling part 310 is formed in a cone shape corresponding to the inside of the tip 110 , and the outer coupling part 320 has the same inner diameter as the outer diameter of the tip 110 . It may be formed in a cylindrical shape.

Meanwhile, a connection hole 311 is formed at the tip of the inner coupling part 310 . The connection hole 311 is located in contact with the injection hole 101, and substantially, the inner end of the needle 200 inserted into the needle insertion space 302S is through the connection hole 311. It may be located on the injection hole 101 .

In addition, a first fastening protrusion 313 is provided in the inner coupling part 310 , and a second fastening groove 321 is formed in the outer coupling part 320 . The first fastening protrusion 313 is inserted into the first fastening groove 111 , and the second fastening protrusion 112 is inserted into the second fastening groove 321 . The first fastening protrusion 313 may be defined such that one side of the inner surface of the inner coupling part 310 protrudes in a circumferential direction thereof. In addition, the second fastening groove 321 may be defined such that one side of the inner surface of the outer coupling part 320 is depressed in the circumferential direction thereof. The first fastening protrusion 313 and the second fastening groove 321 are also the same as the first fastening groove 111 and the second fastening protrusion 112, the inner coupling part 310 and the outer coupling part ( 320) are spaced apart in the longitudinal direction.

Unexplained reference numeral B1 denotes an adhesive. The adhesive B1 serves to completely fix the needle 200 inserted into the needle insertion space 302S.

Next, the plunger 400 moves with respect to the storage space 100S to store the chemical solution in the storage space 100S or inject the chemical solution stored in the storage space 100S. And a packing 410 for sealing the space between the inner wall of the storage space 100S is provided at the front end of the plunger 400 . Substantially, in a state in which the plunger 400 moves with respect to the storage space 100S and the packing 410 is located at one end of the storage space 100S adjacent to the injection hole 101, the needle The inner end of 200 abuts against the packing 410 or is located adjacent to the packing 410 .

Finally, the cap (C1) serves to protect the needle (200). To this end, the cap C1 may be coupled to the barrel 100 such that the tip 110 , the needle 200 and the needle hud 300 are positioned therein.

In this embodiment configured as described above, the inside of the needle hud 300 , substantially the tip insertion space 300S is formed in a shape that matches the shape of the tip 110 . Therefore, in the present embodiment, in the state in which the tip 110 is inserted into the tip insertion space 300S, an unnecessary space is not formed inside the needle hud 300. In addition, in this embodiment, the inner end of the needle 200 is located on the injection hole 101, the plunger 400, its tip, substantially the packing 410 is the injection hole 101 ) and the abutting position is moved with respect to the storage space (100S). Therefore, in this embodiment, an unnecessary space is not formed between the inner end of the needle 200 and the packing 410 . And since an unnecessary space is not formed between the inside of the needle hud 300 and the inner end of the needle 200 and the packing 410 in this way, according to this embodiment, the chemical liquid does not remain in the unnecessary space. and, ultimately, the phenomenon in which the chemical solution cannot be injected and is discarded can be prevented.

Within the scope of the basic technical idea of the present invention, many other modifications are possible for those of ordinary skill in the art, and the scope of the present invention should be interpreted based on the appended claims. will be.

1: Syringe 100: barrel 100S: storage space 100: injection hole 110: tip 111: first fastening groove 112: second fastening projection 200: needle 300: needle hub 300S: tip insertion space 302S: needle insertion space 310: inner coupling part 311: connector 313: first fastening projection 320: outer coupling portion 321: second fastening groove 400: plunger 410: packing C1: cap B1: Glue

Claims (13)

A storage space (100S) for storing the chemical therein is defined, and an injection hole (101) communicating with the storage space (100S) is formed at one end of the barrel 100; a needle 200 for storing the chemical solution in the storage space 100S or injecting the chemical solution stored in the storage space 100S; a needle hud 300 coupled to the barrel 100 in a state in which the needle 200 is fixed; and a plunger 400 moving with respect to the storage space 100S to store the chemical solution in the storage space 100S or inject the chemical solution stored in the storage space 100S through the needle 200; Including, in a state in which the needle hud 300 is coupled to the barrel 100, the inner end of the needle 200 is located on the injection hole 101, and the plunger 400 is, A syringe that moves with respect to the storage space (100S) between a position where the tip abuts the injection hole (101). According to claim 1, wherein the needle hud 300, the outer surface of the inner surface of the hollow tip 110 that extends from one end of the barrel 100 so that the injection hole 101 and the one end are in communication with the inner surface is in contact inner coupling portion 310; and an outer coupling part 320 whose inner surface is in contact with the outer surface of the tip 110 and whose tip is positioned on the injection hole 101 ; Including, by the inner surface of the inner coupling part 310 and the outer surface of the outer coupling part 320, a tip insertion space (300S) into which the tip 110 is inserted is defined. The syringe according to claim 2, wherein the inside of the tip 110 and the inner coupling portion 310 are formed in a cone shape that is mated to each other. The syringe of claim 2, wherein the inner surface of the tip 110 and the outer surface of the inner coupling part 310 are tapered to fit each other. According to claim 2, wherein one of the inner surface of the outer surface of the tip 110 and the inner coupling portion 310, or the inner surface of the tip 110 and the inner surface of the outer coupling portion 320, is inserted into the other A syringe in which fastening protrusions 112, 311 and fastening grooves 111 and 321 to be coupled are formed. The needle insertion space (302S) into which the needle 200 is inserted is defined by the inner surface of the inner coupling part 310, and at the tip of the inner coupling part 310, the needle insertion space A syringe in which a connection hole 311 positioned to abut the injection hole 101 so that the inner end of the needle 200 inserted in (302S) is positioned on the injection hole 101 is formed. The syringe of claim 6, wherein the needle 200 is fixed by an adhesive while being inserted into the needle insertion space (302S). An injection hole 101 for storing a chemical solution or injecting a chemical solution stored in the storage space 100S is formed in the storage space 100S formed therein, and the injection hole 101 and one end thereof are extended to communicate The barrel 100 is provided with a hollow tip 110 to be; a needle 200 for storing the chemical solution in the storage space 100S or injecting the chemical solution stored in the storage space 100S; a needle hud (300) coupled to the barrel (100) to connect the needle (200) to the barrel (100); and a plunger 400 moving with respect to the storage space 100S for storage or injection of the chemical solution through the needle 200; In the syringe (1) comprising: the needle hud 300, is formed in a shape to fit the tip 110, the tip 110 is inserted into the tip insertion space (300S); And the needle 200 is inserted into the needle insertion space (302S); This is defined, and in a state in which the tip 110 and the needle 200 are inserted into the tip insertion space 300S and the needle insertion space 302S, respectively, the inner end of the needle 200 is the injection hole ( 101), and the plunger 400 moves with respect to the storage space 100S between the positions where the tip abuts against the injection hole 101. The method of claim 8, wherein the tip insertion space (300S), the inner surface of the inner coupling portion 310, the outer surface of which is in contact with the inner surface of the tip (110) and the inner surface of the tip (110) is in contact with the outer surface of the tip (110) A syringe defined by the outer surface of the outer coupling portion (320). According to claim 9, wherein the needle insertion space (302S), is defined by the inner surface of the inner coupling portion 310, the needle 200, is formed at the tip of the inner coupling portion 310, the needle A syringe positioned on the injection hole 101 through a connection hole 311 positioned in contact with the inner end of the 200 . The syringe of claim 10, wherein the needle 200 is fixed by an adhesive while being inserted into the needle insertion space (302S). 12. The method according to any one of claims 9 to 11, wherein the inner surface of the tip (110) and the outer surface of the inner coupling part (310) are tapered to fit each other, so that the inner and inner coupling of the tip (110) A syringe in which the portion 310 is formed in a cone shape that is mated to each other. 13. The method of claim 12, wherein one of the outer surface of the tip 110 and the inner surface of the inner coupling portion 310, or the inner surface of the tip 110 and the inner surface of the outer coupling portion 320, is inserted into the other A syringe in which fastening protrusions 112, 311 and fastening grooves 111 and 321 to be coupled are formed.

Images