KR102047126B1 - Safety pen needle capable of preventing loose rotation - Google Patents

Abstract

The present invention relates to a safety pen needle to prevent idling. According to one embodiment of the present invention, the pen needle coupled to a pen type syringe body comprises: a needle; a needle hub including a coupling structure screw-coupled to a body, holding the needle, and having a protrusion formed on a support surface; a spring having one side supported by the support surface to provide elastic force; a plunger including a plurality of blades having elasticity to be folded or unfolded, and penetrating the needle thereinto through a hollow; a small cap supported by the other side of the spring and receiving the blades therein to allow the blades to go out; and a middle cap coupled to the small cap, receiving the small cap to allow movement of the small cap, and having serration corresponding to the protrusion. Accordingly, when the upper surface of the small cap is pressed, the plunger moves into the middle cap together with the small cap. However, when pressure is removed after the upper surface of the small cap is pressed, the small cap protrudes from the middle cap by the spring and the blades going out from the small cap are unfolded to prevent the small cap from moving again into the middle cap. Accordingly, when the body is coupled to the pen needle, idling is prevented by the coupling between the protrusion and the serration.

Description

SAFETY PEN NEEDLE CAPABLE OF PREVENTING LOOSE ROTATION}

This technology relates to safety pen needles to prevent waste.

 The body of the pen-type syringe contains a medicine that can be injected several times or tens of times, and a certain amount of medicine can be injected into the human body by the user's pressing pressure. It can be used for one time by replacing the pen needle).

Pen needles are disposable consumables. Many problems have been developed by users to prevent secondary infections caused by repeated reuse or inadvertent skin contact or puncture. .

The body containing the pen needle and the drug according to the prior art was mutually coupled by screwing. When the user performed the engagement by rotating the pen needle and / or the body, the needle hub was inverted when the needle hub was not fixed and rotated to engage the pen needle and the syringe body. Therefore, the user could not grasp that the pen needle and the body are completely coupled, and thus a situation in which the pen needle was not completely coupled with the body may be injected into the human body.

One of the problems to be solved by the present technology is to solve the problem of the prior art by preventing the waste of the needle hub when coupling the body and the pen needle containing the medicine.

The present embodiment includes a pen needle coupled to a pen-type syringe body, and includes a needle, a coupling structure for screwing the body, a needle hub holding a needle and having protrusions formed on a support surface, and one side thereof being supported by a support surface. A spring which is supported and provides elastic force, a plurality of wings which are elastically unfolded or folded, a plunger through which a needle penetrates through the hollow, and is supported by the other side of the spring, and has a plurality of wings inside A small cap for storing a plurality of wings so that the plurality of wings can be separated, and a small cap that combines with the small cap and accommodates the small cap for the small cap to move, and has a serration corresponding to the protrusion. When the top of the small cap is pressed, the plunger moves together with the small cap into the inside of the middle cap, but when the pressure is removed after the top of the small cap is pressed, the small cap is outside the heavy cap by the spring. Protruding into a plurality of wings out of the small cap so that the small cap does not move back into the middle cap is unfolded, do not turn away from each other by the combination of the projection and the teeth when the body and the pen needle is combined.

According to one aspect of this embodiment, the spring is received by the small cap and the heavy cap.

According to one aspect of this embodiment, the needle hub and the middle cap are each joined by a complementary coupling structure.

For example, the complementary coupling structure formed on the needle hub is a protrusion, and the complementary coupling structure formed on the central cap is a groove.

In another example, the complementary coupling structure formed in the needle hub is a groove, and the complementary coupling structure formed in the central cap is a protrusion.

According to the present embodiment, the pen needle and the body are combined so that the user can recognize that the pen needle and the body are sufficiently combined.

In addition, this technology can serve as a driving force for national growth as a medical device, which is one of the five new growth-related product categories.

1 is an exploded perspective view of a pen needle 10 according to the present embodiment.
Fig. 2A is a perspective view of the middle cap according to the present embodiment, and Fig. 2B is a perspective view of the needle hub according to the present embodiment.
3 is a view illustrating a state in which a body and a pen needle are coupled to each other.
4A to 4D are diagrams for explaining the use of the pen needle according to the present embodiment.

Description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as limited by the embodiments described in the text. That is, since the embodiments may be variously modified and may have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea.

On the other hand, the meaning of the terms described in the present application should be understood as follows.

Terms such as "first" and "second" are intended to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, the first component may be named a second component, and similarly, the second component may also be named a first component.

When a component is referred to as being "above" or "on" another component, it should be understood that another component may be present, although it may be directly above the other component. On the other hand, when a component is said to be "in contact" with another component, it should be understood that there is no other component in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately through", "between" and "immediately between" or "neighboring to" and "on" Direct neighbor "and so on.

Singular expressions should be understood to include plural expressions unless the context clearly indicates otherwise, and terms such as "include" or "have" refer to features, numbers, steps, operations, components, parts, or parts thereof described. It is to be understood that the combination is intended to be present, but not to exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

Each step may occur differently from the stated order unless the context clearly dictates the specific order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

The drawings referred to for describing the embodiments of the present disclosure are intentionally exaggerated in size, height, thickness, etc. for ease of explanation and easy understanding, and are not to be enlarged or reduced in proportion. In addition, any component illustrated in the drawings may be intentionally reduced in size, and other components may be intentionally enlarged in size.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms such as those defined in the commonly used dictionaries should be construed to be consistent with the meanings in the context of the related art and should not be construed as having ideal or overly formal meanings unless expressly defined in this application. .

Hereinafter, this embodiment will be described with reference to the accompanying drawings. 1 is an exploded perspective view of a pen needle 10 according to the present embodiment. 2 (A) is a perspective view of the heavy cap 600 according to the present embodiment, and FIG. 2 (B) is a perspective view of the needle hub 100 according to the present embodiment. 1 to 2 (B), the pen needle 10 according to the present embodiment includes a needle 200, a coupling structure for screwing the body (Fig. 3 body), the needle 200 A needle hub 100 which is gripped and has a first coupling member 110 formed on one surface thereof, a spring 300 that is supported by one side thereof to provide elastic force, and a plurality of wings that are stretched or folded with elasticity. A small cap having a plunger 400 through which the needle 200 penetrates through the hollow, and supported by the other side of the spring 300, and accommodated therein so that a plurality of wings W can be detached therein; Small cap 500, coupled to the small cap 500, the small cap 500 to accommodate the small cap 500 to move, the middle cap 600 is formed with a serration (610) corresponding to the projection 110 Includes, when the small cap 500, the upper surface is pressed, the plunger 400 moves together with the small cap 500 into the middle cap 600, the small cap 500 is pressed down After the pressure is removed, the small cap 500 is protruded by the spring 300 to the outside of the heavy cap 600, and the plurality of wings 600 are separated from the small cap 500 so that the small cap 500 does not move back into the heavy cap 600. ) Are unfolded and do not turn away from each other by the coupling of the first coupling member 110 and the second coupling member 610 when the body and the pen needle 10 are coupled to each other.

The needle hub 100 grips the needle 200 and supports the spring 300 on one surface thereof. The first coupling member 110 is formed on one surface of the needle hub 100, and the first coupling member 110 is seated on the second coupling member 610 formed in the heavy cap 600, as will be described later.

The needle hub 100 includes a coupling structure (not shown) that can be screwed into the syringe body. In one embodiment, the needle hub 100 and the syringe body may include screw structures formed complementary to each other, for example, the needle hub 100 and the syringe body (body) and the male thread respectively Can be formed. As another example, the male and female threads may be formed in the needle hub 100 and the syringe body, respectively.

Needle 200 is also extended in the direction of the syringe body (body), when the pen needle 10 and the body (body) coupled to deliver the drug contained in the syringe body (body) by invading the human body.

The plunger 400 has a hollow through which the needle 200 penetrates, and includes a plurality of wings (W). The plunger 400 is formed of a material having elasticity, and the plurality of wings W are accommodated in the small cap 500 before the pen needle 10 is used. The small cap 500 is accommodated to be movable in the middle cap 600, the small cap 500 is provided with an elastic force in contact with the other side of the spring (300).

The heavy cap 600 is combined with the small cap 500 to accommodate the small cap 500 so that the small cap 500 can move. Heavy cap 600 and the needle hub 100 is coupled to the complementary coupling structure (120, 620) does not decompose. As shown in FIGS. 2A and 2B, the complementary coupling structure may be a protrusion 120 formed on the needle hub 100, and the protrusion 120 may include a groove formed in the central cap 600. 620). In another embodiment, not shown, the complementary coupling structure may be a protrusion formed in the heavy cap 600, and the protrusion may engage with the groove formed in the needle hub 100.

3 is a view illustrating a state in which the body and the pen needle 10 are coupled to each other. According to the related art, when the body and the pen needle 10 are coupled to each other, the body and / or the pen needle 10 should be rotated so as to be coupled, but a member for supporting the needle hub 100 is provided. There is no body (body) and the needle hub 100 can be turned away from each other.

However, according to the present embodiment illustrated in FIGS. 2A and 2B, when the body and the needle hub 100 are coupled, the first coupling member 110 formed on the needle hub 100 may be formed. It is seated on the second coupling member 610 formed in the heavy cap 600. Therefore, the needle hub 100 may be fixed with respect to the heavy cap 600, it can be confirmed whether the body (body) and / or pen needle 10 is fully engaged when rotating to combine with each other.

For example, when the body and / or pen needle 10 are rotated without any resistance when they are coupled to each other by rotation, the body and / or the pen needle 10 may be completely uncoupled. On the contrary, when a plurality of catches occur when the body and / or the pen needle 10 are rotated to each other and coupled to each other, a position where the first coupling member and the second coupling member are seated with each other by a rotational force provided by the user It may be a jam that occurs when you settle out of another position. At this time, the user may recognize that the body and the pen needle 10 are sufficiently coupled.

2A and 2B, the first coupling member 110 may be a protrusion, and the second coupling member 610 may be a serration in which both protrusions and grooves are formed. have. In another embodiment, not shown, the first coupling member may be a tooth having both protrusions and grooves formed therein, and the second coupling member 610 may be a protrusion. In another embodiment, not shown, both the first coupling member and the second coupling member may be toothed.

In one embodiment, the pen needle 10 may further include a large cap 700 for receiving the needle hub 100 to the heavy cap 600 coupled. In one embodiment, the large cap 700 may include the needle hub 100 to the heavy cap 600 coupled to the disinfected interior, and may be sealed and then sealed with sterile paper.

4A to 4D are diagrams for explaining the use of the pen needle 10 according to the present embodiment. Referring to FIG. 4A, the user separates the pen needle 10 from the large cap 700 and approaches the skin SKIN to be injected. The wings W of the plunger 400 are stored in the small cap 500.

4B is a view showing a state in which the user scans with the pen needle 10. Referring to FIG. 4B, when the user applies pressure to the pen needle 10 to administer the drug, the small cap 500 in close contact with the skin SKIN is pressed, and the heavy cap 600 is opposed to the elastic force provided by the spring. Move inside. The plunger 400 accommodated in the small cap 500 also moves inside the heavy cap 600 as the small cap 500 moves. As the user applies pressure to the pen needle 10, the needle 200 invades into the skin SKIN to be injected.

4C shows the pen needle 10 spaced apart from the skin upon completion of the injection. Referring to FIG. 4C, as the pen needle 10 is spaced apart from the skin, the spring 300 having one side supported by the needle hub 100 provides elastic force to the small cap 500 connected to the other side and thus the small cap 500. ) Protrudes out of the heavy cap 600. As the spring 300 provides the elastic force, the small cap 500 moves out of the heavy cap 600 in a folded state of the plunger 400.

4 (D) is a view illustrating the pen needle 10 in which the wing W of the plunger 400 protrudes out of the small cap 500. Referring to FIG. 4 (D), the small cap 500 protrudes out of the middle cap 600 by the elastic force provided by the spring 300, and the plunger 400 leaves the small cap 500 outside and the plunger 400. By the elastic force of the wings (W) are unfolded again.

Therefore, even when pressing the end of the small cap 500, the small cap 400 is not moved into the heavy cap 600 by the wing of the plunger 400 is fixed small cap 500. In addition, as the small cap 500 is fixed, the end of the needle 200 is accommodated in the small cap 500, and reuse of the pen needle 10 is prevented.

Although described with reference to the embodiments shown in the drawings to aid the understanding of the present invention, this is an embodiment for the implementation, it is merely exemplary, those skilled in the art from various modifications and equivalents therefrom It will be appreciated that other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the appended claims.

100: needle hub 110: first coupling member
120: complementary coupling member 200: needle
300: spring 400: plunger
500: small cap 600: medium cap
610: second engagement member 620: complementary engagement member
700: large cap

Claims (5)

With a pen needle that engages the pen type syringe body,
needle;
A needle hub including a coupling structure for screwing the body and holding the needle and having a first coupling member formed on a support surface;
One side is supported by the support surface to provide an elastic force;
A plunger having a plurality of wings that are elastically unfolded or folded and through which the needle penetrates through a hollow;
A small cap supported by the other side of the spring and accommodating the plurality of wings so that the plurality of wings are detachable therein;
A heavy cap coupled to the small cap, receiving the small cap to move the small cap, and having a second coupling member corresponding to the first coupling member;
When the small cap top surface is pressed, the plunger moves together with the small cap to the inside of the heavy cap, but when the pressure is removed after the small cap top surface is pressed, the small cap protrudes out of the heavy cap by the spring and the small cap back into the heavy cap. Spreading the plurality of wings out of the small cap to prevent movement,
The first coupling member is a projection, the second coupling member is rotated to each other with a tooth to engage,
When the body and the pen needle is rotated and coupled, the protrusions are seated on the teeth so that they do not turn away from each other.
And a pen needle that provides a continuous feeling of engagement to the user while the protrusion is continuously moved to adjacent concave portions of the tooth when the first coupling member and the second coupling member are rotated to engage. With a pen needle that engages the pen type syringe body,
needle;
A needle hub including a coupling structure for screwing the body and holding the needle and having a first coupling member formed on a support surface;
One side is supported by the support surface to provide an elastic force;
A plunger having a plurality of wings that are elastically unfolded or folded and through which the needle penetrates through a hollow;
A small cap supported by the other side of the spring and accommodating the plurality of wings so that the plurality of wings are detachable therein;
A heavy cap coupled to the small cap, receiving the small cap to move the small cap, and having a second coupling member corresponding to the first coupling member;
When the small cap top surface is pressed, the plunger moves together with the small cap to the inside of the heavy cap, but when the pressure is removed after the small cap top surface is pressed, the small cap protrudes out of the heavy cap by the spring and the small cap back into the heavy cap. Spreading the plurality of wings out of the small cap to prevent movement,
The first coupling member is a tooth, the second coupling member is coupled to each other by rotating with a projection,
When the body and the pen needle is rotated and coupled, the protrusions are seated on the teeth so that they do not turn away from each other.
And a pen needle that provides a continuous feeling of engagement to the user while the protrusion is continuously moved to adjacent concave portions of the tooth when the first coupling member and the second coupling member are rotated to engage. delete The method according to any one of claims 1 and 2,
The spring is a pen needle accommodated by the small cap and the heavy cap The method according to any one of claims 1 and 2,
The needle hub and the middle cap are each pen needle coupled by a complementary coupling structure.

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