KR102367827B1 - Safety engineered injection devices - Google Patents

Abstract

The safety injection device according to the present invention comprises a body and a protector. A needle is coupled to the body, and the protector is slid along the second rail, the first rail, and the third rail provided on the outer periphery of the body. As the protector slides, the sharp end of the needle is exposed to the outside or accommodated inside the protector.
As the protector slides from the second rail to the first rail, the needle is exposed to the outside, and as the protector slides along the third rail from the first rail, the needle is accommodated in the protector.

Description

SAFETY ENGINEERED INJECTION DEVICES }

The present invention relates to a safety injection device, wherein the needle is exposed to the outside only during use, and after use, the needle can be accommodated inside only by a simple operation, so it is safe, and in the process of putting a cap on the needle, the user injects It relates to a safety injection device that eliminates the risk of being pierced by a needle.

In general, a syringe consists of a piston and a cylinder. At one end of the cylinder, the piston enters and is coupled, and at the other end, the needle is coupled. The inner space of the cylinder is filled with the chemical, and when the pressure inside the cylinder is increased by pressurizing the piston, the chemical is injected in one direction through the needle.

A syringe is used to inject a chemical solution into the body through the needle penetrating the skin of the human body. Since the needle penetrates the user's skin and comes into contact with blood, special attention must be paid to secondary hepatitis or contamination through syringes.

For this reason, syringes are strictly single-use. Since the needle with a sharp tip is exposed to the outside for a long time, it is important to safely protect the needle before and after use. As a method for protecting the needle, as disclosed in Republic of Korea Utility Model Publication No. 20-2010-0010095 (published on October 15, 2010), a stopper structure that covers the needle so that the sharp end is not exposed is widely practiced.

After injecting the drug into the syringe, move it, or after using the syringe, close the cap again to protect the needle with a sharp tip (recapping).

The recapping process of reclosing the stopper required attention to put the stopper on the needle because the inner diameter of the stopper was small.

In the prior art, in order to prevent an accident where the needle is pricked by the needle in the recapping process, rather than trying to structurally change the needle and the stopper, warning phrases or the like were written or safety education was conducted. However, if the user is not careful during the recapping process, it is easy to get stabbed by a sharp needle, and this remains a risk in the transportation and cleaning process until the syringe is completely discarded.

Conventional syringes could not prevent reuse, misuse, or malicious use in addition to needle puncture accidents, and had a limit that could not be enforced by structurally blocking them. Therefore, a method for solving such problems is required.

Republic of Korea Public Utility Model No. 20-2010-0010095 (published on October 15, 2010)

The present invention is an invention devised to solve the problems of the prior art described above, in which the operation for withdrawing the needle is simple, and the user's hand approaches the sharp end of the needle and closes the stopper, not the method An object of the present invention is to provide a safe injection device that can store the needle more safely by protecting the needle by moving the hand in the same direction as the direction in which the sharp end of the needle is directed.

And, to provide a safe injection device having a compulsory and fundamental anti-reuse and misuse function by enabling a locking device to prevent reuse after withdrawing the needle.

The objects of the present invention are not limited to the objects mentioned above, and other objects and advantages of the present invention not mentioned will be understood by the following description.

The safety injection device according to the present invention comprises a body and a protector. The body includes a gripper and a needle. The grip portion is formed at one end of the body, and the needle has a sharp end toward the other end of the body. The grip part and the needle are connected to each other through a passage through which the chemical solution can move therein. The protector is coupled to the body. And, it can be slid along the longitudinal direction of the needle, and depending on the sliding direction, the end of the needle is accommodated therein or is exposed to the outside through a through hole.

In addition, the body is formed in at least some sections along the longitudinal direction on the outer periphery of a first rail providing a path on which the protector slides, and one end of the path is connected to the first rail, respectively, and each of the first It may include a second rail and a third rail branched from the rail and formed in the needle direction, respectively, providing a path through which the protector slides. The protector includes a movement guide inserted into the second rail, the first rail, and the third rail on an inner surface thereof to guide the protector to slide along the second rail, the first rail, and the third rail; A step is formed at a point where the second rail and the first rail meet so that the moving guide can move from the second rail to the first rail but cannot return from the first rail to the second rail.

In one embodiment of the present invention, the second rail, the first rail, and the third rail are formed as long grooves that are recessed to have a predetermined path on the outer periphery of the body, respectively.

In one embodiment of the present invention, the second rail includes a second receiving part formed at an end adjacent to the needle and formed as a groove that is deeper than the periphery, and the protector must be subjected to an external force of a predetermined size for the movement guide to be applied. It slides along the second rail by leaving the second storage unit.

In an embodiment of the present invention, the third rail is formed at an end adjacent to the needle and moves when the third receiving part and the movement guide of the protector are formed with a groove that is deeper than the periphery enters the third receiving part. and a third step formed on the path of the third rail so that the guide does not deviate from the third accommodating part.

In an embodiment of the present invention, the second rail is formed as a long groove shallower than the first rail, and when the movement guide of the protector enters the first rail, the movement guide does not return to the second rail. A first step that is not formed is formed at a boundary where the second rail and the first rail are connected.

In an embodiment of the present invention, the protector is provided on the outer periphery thereof, and at least one pair of the second gripping parts are disposed to face each other, and the second gripping part is elastically deformed.

In an embodiment of the present invention, a free end of the second gripper is provided in a direction in which the through hole is formed, and the free end is curved in a direction away from the side surface of the protector.

In one embodiment of the present invention, the protector is formed on the inner surface adjacent to the through hole and includes a double holder to which the needle is fixed when the sharp end of the needle enters.

In one embodiment of the present invention, the double holder is formed inside the holding part and the holding part made of a spacing smaller than the diameter of the needle, the entry part is wider as it is adjacent to the through hole, the fixing part in which the needle is accommodated. includes

In an embodiment of the present invention, the path formed by the first rail and the third rail is a straight line, and the path formed by the second rail is a straight line formed by the first rail and the third rail It is formed to be inclined in one direction from the path of

In an embodiment of the present invention, the movement guide is provided on the inner wall of the protector, and is supported by an elastic force in the inner direction of the protector and protrudes.

The safety injection device according to the present invention has the advantage that the injection needle is safely stored and stored, and the injection needle can be exposed and used with a simple operation when in use.

In addition, the process of safely storing the needle again after use is simple, and there is an effect of preventing the user from being exposed to the risk of being stabbed by the needle.

In addition, the injection needle housed by the protector after use is not easily exposed again, so it can be safely disposed of.

And, since the injection needle is stored and protected twice, it has the effect of significantly lowering the risk of occurrence due to the injection needle.

In addition, there is an advantage that is compatible with insulin injection, a vacutainer for blood collection, a pen needle for insulin injection, a catheter for injecting a drug solution such as a fluid into the body, a scalpel, and the like.

In addition to the above-described effects, more specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a perspective view of a safety injection device according to an embodiment of the present invention.
Figure 2 is a perspective view of a switched state to use the safe injection device according to an embodiment of the present invention.
Figure 3 is a front view of the body in the safety injection device according to an embodiment of the present invention.
Figure 4 is a view showing a state in which the injection needle is exposed by sliding the protector in the safety injection device according to an embodiment of the present invention.
5 is a view showing a state in which the protector is slid in the safety injection device according to an embodiment of the present invention and accommodated in a state for disposing of the injection needle.
Figure 6 is a front view of the body showing the path formed by the second rail, the first rail and the third rail in the safety injection device according to another embodiment of the present invention.
7 to 9 are diagrams illustrating the process of switching to the use state and to the discard state of the safe injection device according to an embodiment of the present invention.
10 is a cross-sectional view of a protector in a safety injection device according to an embodiment of the present invention.
11 is a cross-sectional view of a safety injection device according to an embodiment of the present invention.
12 is a view showing a state in which the needle is double accommodated in the safety injection device according to an embodiment of the present invention.
13 is a cross-sectional view showing a cross-section of the double holder in the safety injection device according to an embodiment of the present invention.
14 is a front view of the body in the safety injection device according to another embodiment of the present invention.
15 is a cross-sectional view taken along line A-A' of FIG. 14 .
16 is a perspective view of a body in a safety injection device according to an embodiment of the present invention.
17 is a cross-sectional view taken along line B-B' of FIG. 16 .
18 is a cross-sectional view taken along line C-C' of FIG. 17 .

The above objects, features and advantages will be described later through embodiments of the present invention. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Accordingly, those skilled in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention.

In describing the present invention, detailed descriptions of well-known techniques that may unnecessarily obscure the gist of the present invention will be omitted. In addition, the same reference numerals in the drawings refer to the same or similar components. The size or thickness of each component may be exaggerated for clarity of description.

Hereinafter, a safe injection device according to some embodiments of the present invention will be described.

Figure 1 is a perspective view of a safety injection device according to an embodiment of the present invention, Figure 2 is a perspective view of a switched state to use the safety injection device according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention It is a front view of the body 300 in the safety injection device according to the embodiment.

1 to 3 , the safety injection device according to an embodiment of the present invention includes a body 300 and a protector 20 . The body 300 includes a needle 400 .

The body 300 has a predetermined length. And, the body 300 may be coupled to the cylinder of the syringe, and the body 300 serves as a passage for the chemical solution formed so that the chemical solution introduced into one end can be injected through the needle 400 .

The protector 20 is coupled to the body 300 so as to slide along the longitudinal direction of the body 300 .

And, according to the direction in which the protector 20 slides along the body 300 , the sharp end of the needle is hidden inside or exposed to the outside through the through hole 500 .

The body 300 includes a second rail 310 , a first rail 320 , and a third rail 330 . The second rail 310 and the third rail 330 merge their paths in at least some sections, and a section where the paths are merged is defined as a first rail 320 .

The second rail 310 , the first rail 320 , and the third rail 330 are formed in at least some sections along the longitudinal direction on the outer periphery of the body 300 and provide a path through which the protector 20 slides. .

Each of the second rail 310 and the third rail 330 has one end of its path meeting at the first rail 320 , and is branched from the first rail 320 to be elongated in the needle direction.

The protector 20 is inserted into the second rail 310, the first rail 320, and the third rail 330 on the inner surface thereof, and the second rail 310, the first rail 320 and the third rail ( It further includes a movement guide 800 for guiding the protector 20 to slide along the 330).

In addition, the movement guide 800 is movable from the second rail 310 to the first rail 320, but the second rail 310 and A step is formed at the point where the first rail 320 meets.

Below, each of the above-described configurations will be described in more detail.

As shown in FIG. 3 , the body 300 includes a needle 400 , a storage unit, and a first gripping unit 200 .

The body 300 is formed in a rod shape having a predetermined length and is formed in a cylindrical shape in an embodiment of the present invention.

The shape of the body 300 is not limited to a cylindrical shape as shown, and its cross-section may be made in an elliptical or a duck-like shape.

The body 300 has a storage unit formed in its inner space. The storage unit is a space in which the chemical solution can be filled. And, the needle 400 is coupled to one end of the body 300 . The needle 400 is an injection needle having a thin passage, and is formed so that one end of the protruding end is sharp and can penetrate into the user's skin. In addition, the needle 400 is connected to the storage unit, and when pressure is applied to the storage unit, the chemical liquid filled in the storage unit is injected to the sharp end through a thin tube inside the needle 400 .

The first gripping part 200 may be formed at the other end of the body 300 opposite to the portion to which the needle 400 is coupled.

The first gripper 200 serves as a handle that the user can grip so as to fix the body 300 in the process of sliding the protector 20 . In addition, an inlet into which the cylinder of the syringe can be inserted is formed in the first gripping part 200 , and the cylinder of the syringe enters the inside of the first gripping part 200 to introduce the chemical into the inner space of the body 300 . can be The chemical introduced into the inner space of the body 300 may be sprayed to the outside through the needle 400 .

In addition, a second rail 310 and a third rail 330 that are long grooves formed in two directions along the longitudinal direction of the body 300 are provided on the outer periphery of the body 300 . At least a portion of the path of the second rail 310 and the third rail 330 is combined at a position adjacent to the first gripper 200 . At this time, the path formed by meeting the second rail 310 and the third rail 330 is the first rail 320 .

The first rail 320 , the second rail 310 , and the third rail 330 are formed with engraved long grooves. The width is determined enough to accommodate the movement guide 800 provided in the protector 20 . In one embodiment of the present invention, the third rail 330 is formed in a straight line along the longitudinal direction of the body 300 , and the second rail 310 is a needle 400 from a portion in contact with the first rail 320 . It may be formed to be farther away from the third rail 330 as it approaches. That is, the second rail 310 may be formed to be curved to one side with respect to the longitudinal direction of the body 300 .

Each of the second rail 310 and the third rail 330 is recessed at the end adjacent to the needle 400, the depth of which is deeper than the periphery, and is divided by the second step 314 and the third step 334, respectively. It may include a second accommodating part 312 and a third accommodating part 332 .

In the second rail 310 , the second receiving part 312 is engraved to a deeper depth than the peripheral path formed by the second rail 310 , and is partitioned by the second step 314 to form a predetermined space. . Before using the injection device according to an embodiment of the present invention, the second receiving part 312 has a movement guide 800 of the protector 20 so that it can be stored without exposing the needle 400 to the outside. to remain accepted for payment 312 . However, when a force for pushing the protector 20 in one direction is applied by the user, the movement guide 800 exceeds the second step 314 , and the movement guide 800 moves the first along the second rail 310 . It moves in the direction of the rail 320 . The protector 20 also slides with the movement of the movement guide 800 .

Figure 4 is a view showing a state in which the needle 400 is exposed by sliding the protector 20 in the safety injection device according to an embodiment of the present invention.

As described above, when the user pushes the protector 20 in the direction of the first gripper 200, the movement guide 800 accommodated in the second accommodation portion 312 is restrained by the second step 314 due to external force. is overcome and moves toward the first rail 320 .

And, the movement guide 800 is moved along the path of the first rail 320 out of the second rail 310 , and the protector 20 , which slides together with the movement guide 800 , is outside the body 300 . will cover the perimeter. At this time, the needle 400 passes through the through hole 500 formed in the protector 20 and the sharp end is exposed to the outside.

5 is a view showing a state in which the protector 20 is slid in the safety injection device according to an embodiment of the present invention and accommodated in a state for disposing of the needle 400. As shown in FIG.

5, after using the injection device by exposing the sharp end of the needle 400 to the outside, the protector 20 is again moved away from the first gripping part 200, that is, the needle 400. The needle 400 can be accommodated into the inside of the protector 20 again by pushing in the direction in which the sharp end of the

When the user pushes the protector 20 in the direction in which the sharp end of the needle 400 faces to accommodate the used needle 400 back into the protector 20, the movement guide 800 is the first rail 320 ) and enters the third rail 330 . This may be achieved not only by the effect that the third rail 330 is formed straight, but also by the depth difference between the first rail 320 and the second rail 310 .

The depth of the long groove forming the first rail 320 is formed to be deeper than the depth of the long groove forming the second rail 310 . Therefore, the movement guide 800 moving along the first rail 320 does not return to the second rail 310 having a relatively low depth, and the first rail 320 is formed to have the same depth or greater depth. It enters the 3 rail (330). The depth of the third rail 330 may be gradually lowered past the area where the first rail 320 and the second rail 310 contact each other. This causes the inclination to be made so that the bottom surface of the third rail 330 gradually rises. This causes the movement guide 800 to receive resistance to movement by making contact with the bottom surface of the third rail 330 while moving along the third rail 330 . This configuration serves to allow the user to stably slide the protector 20 , as well as to form a third step 334 that partitions the third accommodating part 332 .

The third step 334 may be formed higher than the second step 314 . The second step 314 is formed to a height enough to allow the movement guide 800 to pass therethrough by an external force, and the third step 334 is the movement guide 800 even when an external force is applied. may act to prevent movement in the direction of the first rail 320 again due to interference. This means that when the movement guide 800 enters the third storage unit 332 beyond the third step 334, the safety injection device according to an embodiment of the present invention has been used, and the use is finished. This is to prevent the needle 400 from being exposed to the outside again.

As described above, the third accommodating part 332 is recessed deeper than the peripheral depth of the long groove forming the third rail 330 , and its boundary is determined through the third step 334 . That is, when the movement guide 800 enters the third storage unit 332 , the movement guide 800 moves along the third rail 330 again unless an external force that can ignore the third step 334 is applied. It becomes impossible to move in the direction of one rail 320 .

This prevents the situation in which the needle 400 is exposed to the outside due to reasons such as the protector 20 sliding in the opposite direction again in a state in which the needle 400 is accommodated in the inner space of the protector 20 after use.

In addition, although not shown in the first rail 320 , a first receiving part 322 may be formed at an end adjacent to the first gripping part 200 of the first rail 320 . The first accommodating part 322 may also be formed as a groove dug deeper than the periphery on the path formed by the first rail 320 , and when the movement guide 800 enters the first accommodating part 322 , a predetermined The movement guide 800 is fixed by the binding force of This has the effect of preventing the protector 20 from moving easily while the needle 400 is exposed.

In addition, a first step 324 may be formed at a point where the first rail 320 and the second rail 310 contact each other. The first step 324 is a step formed to prevent the movement guide 800 moving along the first rail 320 from entering the second rail 310 , and from the second rail 310 to the first rail 320 . The surface in the direction it faces is inclined so that the movement guide 800 can pass, but the surface in the direction from the first rail 320 to the second rail 310 is formed vertically so that the movement guide 800 does not cross. can

6 is a front view of the body 300 showing the path formed by the second rail 310, the first rail 320, and the third rail 330 in the safety injection device according to another embodiment of the present invention.

The shape of the second rail 310 , the first rail 320 , and the third rail 330 formed on the body 300 is not limited as described above. As shown in FIG. 6 , the second rail 310 and the third rail 330 may be formed so that at least some sections are bent, respectively. However, in the movement of the movement guide 800 , the second rail It will be sufficient if the movement guide 800 out of 310 is configured not to re-enter the second rail 310 .

As described above, the arrangement of the first rail 320 , the second rail 310 , and the third rail 330 in a V-shape may be applied to a rather large medical device such as a vacutainer.

7 to 9 are diagrams illustrating the process of switching to the use state and to the discarded state of the safe injection device according to an embodiment of the present invention.

The safety injection device according to an embodiment of the present invention may be stored in a state in which the needle 400 is accommodated inside the protector 20 . In order to use the injection in this state, as shown in FIGS. 7 and 8, by rotating the protector 20 in one direction and moving away in the direction of the first gripper 200, the sharp end of the needle 400 penetrates. It may be exposed to the outside through the sphere 500 .

When the use of injection is completed with the needle 400 exposed, as shown in FIG. 9 , the protector 20 is moved by sliding it in the direction the needle 400 is facing, and the sharp end of the needle 400 is This can be accommodated in the inside of the protector 20 again.

The sliding process of the protector 20 is implemented by the movement guide 800 moving along the second rail 310 , the first rail 320 , and the third rail 330 formed on the body 300 .

10 is a cross-sectional view of the protector 20 in the safety injection device according to an embodiment of the present invention.

The protector 20 may have a cylindrical shape having a predetermined length in an embodiment of the present invention. One end of the protector 20 is provided with a through hole 500 through which the needle 400 can pass in the center. In addition, at least a portion of the body 300 may be accommodated in the inner space of the protector 20 , and the guard may enter the coupling hole 700 , which is an open space at the other end of the protector 20 .

At least one pair of second grippers 900 may be formed on the outer periphery of the protector 20 .

The pair of second grippers 900 are disposed at positions opposite to each other, and may be implemented with a material that is elastically deformable.

As shown in Figure 10, one end is coupled to the protector 20, the other end may be made of a free end extending in the direction in which the needle 400 is directed.

This enables the user to efficiently transfer the force to turning the protector 20 or pushing it in either direction after the user holds the second gripper 900 with at least two fingers.

In addition, in the process of bending the protector 20 from the body 300 in any one direction, the second gripper 900 is elastically deformed, and it can act so that the force applied from the user's finger is properly distributed.

The end of the second gripper 900 toward the needle 400 may be curved in a direction away from the protector 20 .

In addition, a movement guide 800 that can be accommodated in the second rail 310 , the first rail 320 , and the third rail 330 protrudes from the inner surface of the protector 20 . The movement guide 800 may be supported by an elastic force, and when an external force is applied, the protruding height is lowered, and when the external force is removed, the protruding height is increased.

The movement guide 800 moves along the second rail 310 , the first rail 320 , and the third rail 330 by an external force applied to the protector 20 . Movement of the movement guide 800 causes the protector 20 to slide in one direction or the other with respect to the body 300 .

11 is a cross-sectional view of a safety injection device according to an embodiment of the present invention, and FIG. 12 is a view showing a state in which the needle 400 is double accommodated in the safety injection device according to an embodiment of the present invention, FIG. 13 is a cross-sectional view showing a cross-section of the double holder 600 in the safety injection device according to an embodiment of the present invention.

In addition, one end of the protector 20 through which the through hole 500 is formed may further include a needle 400 holder 600 on its inner surface.

11 to 13 , the needle 400 holder 600 is disposed adjacent to the through hole 500 , and the needle 400 enters the needle 400 holder 600 , the needle 400 ) by restraining the needle 400 from being separated.

Specifically, as shown in FIG. 13, at least one needle 400 holder 600 is provided on the periphery of the needle 400 where the needle 400 crosses the center of the protector 20, and the needle ( 400) The holder 600 is formed in a position adjacent to the needle 400, the entry portion 610 gradually narrowing the interval. The entry part 610 has a wide inlet, and the distance from the needle 400 becomes narrower as it goes away. In the entry part 610, the holding part 620 is formed at the point where the interval is narrowest. The holding part 620 is a passage with a length smaller than the diameter of the needle 400 . A fixing part 630 into which the needle 400 is fitted is provided inside the holding part 620 so that the needle 400 can be seated and fixed.

When the needle 400 enters the entry part 610, it is guided to the wide entrance of the entry part 610 and enters the entry part 610 inside, and the holding part 620 formed by the holding part 620 due to the action of a certain external force. When it passes through the space, it is inserted into the fixing part 630 and seated. At this time, the needle 400 is inserted into the fixing part 630 and maintained in a fixed state unless an external force is applied in the opposite direction to which the needle 400 entered the fixing part 630 .

This makes it possible to safely discard the needle 400 by performing the process of receiving the needle 400 in two steps to discard the needle 400 .

The process of fixing the needle 400 to the needle 400 holder 600 is as shown in FIGS. 11 and 12 . By sliding the protector 20 in a direction away from the body 300 to accommodate the needle 400 into the protector 20, when the needle 400 is accommodated in the protector 20, the protector 20 By applying an external force to the provided second gripper 900 , the protector 20 is inclined from the body 300 . At this time, the needle 400 enters the needle 400 holder 600 formed in the inner space of the protector 20, and is inserted into the fixing part 630 of the needle 400 holder 600 and fixed.

Figure 14 is a front view of the body 300 in the safety injection device according to another embodiment of the present invention, Figure 15 is a sectional view taken along line A-A' of Figure 14.

14 and 15 , the third rail 330 may include an irreversible stopper 350 on one side.

The irreversible stopper 350 may be provided on one side or both sides of the third rail 330 , and after the movement guide 800 moves along the third rail 330 and is accommodated in the third receiving unit 332 , the movement The guide 800 reverses the third rail 330 and prevents it from returning.

When the movement guide 800 enters the third receiving part, it is primarily constrained by the third step 334 . And, the retrograde is prevented doubly by the irreversible stopper (350).

Therefore, after using the injection device according to an embodiment of the present invention, by sliding the protector 20, the sharp end of the needle 400 is accommodated in the protector 20 in the protector 20 and the body 300. Even if an external force is applied, the sharp end of the needle 400 is not exposed to the outside again.

16 is a perspective view of the body 300 in the safety injection device according to an embodiment of the present invention, FIG. 17 is a sectional view taken along line B-B' of FIG. 16, and FIG.

16 to 18 , the depth of the second rail 310 is lower than that of the third rail 330 . That is, the third rail 330 is made of a long groove that is deeper than the second rail 310 , and thus the movement guide 800 moving along the second rail 310 and entering the third rail 330 is A return to the second rail 310 is prevented by the first step 324 .

In addition, the depth of the third rail 330 is gradually lowered as it is adjacent to the third accommodating part. That is, the bottom surface of the third rail 330 increases as it is adjacent to the third receiving part.

As shown in FIG. 18 , the depth of the third rail 330 is formed by a, but adjacent to the third receiving part may be formed to have a depth b with a length smaller than a. This change in depth of the third rail 330 forms a third step 334 forming the boundary of the third receiving part, and the user pushes the protector 20 to accommodate the needle 400 in the process of receiving the protector 20 ) so that the user can recognize through tactile sense that it is moving in the right direction. As described above, the safety injection device according to an embodiment of the present invention provides a needle by sliding the protector 20 with respect to the body 300 . 400 may be exposed or accommodated inside the protector 20 . At this time, it is possible to perform the operation of converting the needle 400 to a usable state or to a state for disposal with only an easy and simple operation.

In addition, since various types of pistons enter the first gripper 200 side of the cylinder unit to form an injection device, insulin injection, Vacutainer for blood collection, pen needle 400 for insulin injection, and infusion It is compatible with catheters, scalpels, and the like for injecting drug solutions into the body.

In the above, embodiments of the present invention have been described with drawings, but these are exemplary and the present invention is not limited to the above-described embodiments and drawings. It is apparent that those of ordinary skill in the art can modify the embodiments of the present invention within the scope of the technical spirit of the present invention. In addition, although an action or effect according to the configuration of the present invention is not explicitly described while describing an embodiment of the present invention, it is natural that even the effects predictable by the configuration should be recognized.

20: protector 200: first gripping part
300: body 310: second rail
312: second storage unit 314: second step
320: first rail 322: first storage unit
324: first step 330: third rail
332: third storage unit 334: third step
350: irreversible stopper
400: needle 500: through hole
600: holder 610: entry part
620: holding part 630: fixed part
700: coupling sphere 800: movement guide
900: second gripper

Claims (11)

A body including a needle having a gripper formed at one end and a sharp end disposed toward the other end, wherein the gripper and the needle are connected to each other through a passage through which the chemical solution moves; and a protector coupled to the body, slid along the longitudinal direction of the needle, and the end of the needle is accommodated therein or exposed to the outside through a through-hole according to the sliding direction.
The body is
a first rail formed in at least some sections along the longitudinal direction on the outer periphery to provide a path through which the protector slides; a second rail connected to the first rail and one end of the path, respectively, branched from the first rail and formed in the needle direction, each providing a path through which the protector slides; and a third rail;
The protector is
a moving guide protruding from the inner periphery and inserted into one of the first rail, the second rail and the third rail to guide the protector to slide; and
A step is formed at a point where the second rail and the first rail meet so that the moving guide can move from the second rail to the first rail, but cannot return from the first rail to the second rail;
The second rail is formed as a long groove with a shallower depth than the first rail, and when the movement guide of the protector enters the first rail, the first step is provided to prevent the movement guide from returning to the second rail. A safety injection device, which is formed at a boundary where the second rail and the first rail are connected. According to claim 1,
The first rail, the second rail and the third rail,
A safety injection device, which is formed in a long groove recessed to have a predetermined path on the outer periphery of the body. 3. The method of claim 2,
The second rail,
Including; and a second receiving portion formed with a groove that is deeper than the periphery at the end adjacent to the needle
The protector must be applied with an external force of a predetermined size so that the movement guide is slid along the second rail by leaving the second receiving unit, a safety injection device. 3. The method of claim 2,
The third rail is
a third accommodating part formed at an end adjacent to the needle as a groove dug deeper than the periphery; and
A safety injection device including; a third step formed on the path of the third rail to prevent the movement guide from leaving the third housing when the movement guide of the protector enters the third housing. delete According to claim 1,
The protector is
It includes a; is provided on the outer periphery of the second gripping portion disposed so as to face at least one pair,
The second gripping portion is elastically deformed, a safety injection device. 7. The method of claim 6,
The second gripper is provided with a free end toward the direction in which the through hole is formed, and the free end is curved in a direction away from the side surface of the protector, safety injection device. According to claim 1,
The protector is
A safety injection device, including; a double holder formed on the inner surface adjacent to the through hole to which the needle is fixed when the sharp end of the needle enters. 9. The method of claim 8,
The double holder,
an entry part having a wider interval as it approaches the through hole;
a holding portion formed at an interval smaller than the diameter of the needle; and
Formed inside the holding part, the fixing part in which the needle is accommodated; Containing, a safety injection device. According to claim 1,
The path formed by the first rail and the third rail is formed in a straight line, and the path formed by the second rail is formed to be inclined in one direction from the straight path formed by the first rail and the third rail. safety injection device. A body including a needle having a gripper formed at one end and a sharp end disposed toward the other end, wherein the gripper and the needle are connected to each other through a passage through which the chemical solution moves; and a protector coupled to the body, slid along the longitudinal direction of the needle, and the end of the needle is accommodated therein or exposed to the outside through a through-hole according to the sliding direction.
The body is
a first rail formed in at least some sections along the longitudinal direction on the outer periphery to provide a path through which the protector slides; a second rail connected to the first rail and one end of the path, respectively, branched from the first rail and formed in the needle direction, each providing a path through which the protector slides; and a third rail;
The protector is
a moving guide protruding from the inner periphery and inserted into one of the first rail, the second rail and the third rail to guide the protector to slide; and
A step is formed at a point where the second rail and the first rail meet so that the moving guide can move from the second rail to the first rail, but cannot return from the first rail to the second rail;
The movement guide is
A safety injection device that is provided on the inner wall of the protector and protrudes while being supported by an elastic force in the inner direction of the protector.

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