KR200320328Y1 - a safety injecter structure - Google Patents

Abstract

It is possible to prevent the end of the needle tip from bending when removing the needle cap which is covered to protect the needle, and to prevent the infection caused by physical contact with the needle because the needle cap is not necessary to discard the used syringe. In that way,

Disposable safety syringe according to the present invention is connected to the outer cylinder having a tapered discharge port, integrally connected to the push rod that is installed in the outer cylinder to move forward and backward is accommodated in the outer cylinder and the needle is fixed to the tip and detachably fixed to the discharge port The needle hub is detachably supported on the outer surface of the needle hub and flows through the inlet of the outer cylinder, and the needle cap is separated from the needle hub by pushing the rod in the state of exiting the discharge port, and the needle hub is fixed to the discharge port and then pushed backward. The needle bar is separated from the needle hub by the cutting of the joint connecting the needle hub and the push rod during movement, and the push rod is connected to the needle hub by moving the push rod forward during injection. Means.

Description

Disposable Safety Syringe {a safety injecter structure}

The present invention prevents the end of the needle tip from bending when the needle cap is covered to protect the needle, and the process of covering the needle cap to discard the used syringe is unnecessary. The present invention relates to a disposable safety syringe for preventing infection of infectious diseases such as deficiency syndrome (AIDS) or hepatitis.

More specifically, the needle cap supported by the needle hub is separated from the needle hub by a slight backward movement of the push rod while the needle cap is introduced through the outer cylinder inlet and exits the discharge port, and is separated from the needle hub by inserting a needle into the injection bottle. It is related to a disposable safety syringe that allows the needle to flow into the outer cylinder when the rod is moved backwards, since the needle hub is separated from the needle hub during backward movement to inhale the drug solution, and the needle hub and the rod are coupled to the human body when injecting the needle.

1 is an enlarged cross-sectional view of the excerpt of the disposable syringe according to the prior art.

As shown, the needle hub 2 in which the needle 1 is integrally fixed, the push rod 3 is installed to move forward and backward, and the needle hub 2 is airtight in the tapered outlet 4. And a needle cap 6 which is detachably coupled to the needle hub 2 to protect the end of the injection needle 1.

In the drawings, reference numeral 7 is a stopper formed at the rear of the inner circumference of the outer cylinder 5 to prevent separation from the outer cylinder 5 when the pusher 3 moves backward.

In the disposable syringe structure shown in FIG. 1, in the process of separating the needle cap 6 from the needle hub 2 in order to use the syringe, the exposed end of the needle 1 and the needle cap 6 are The tip of the needle 1 is easily bent when contacted with each other due to carelessness of the user. At this time, even if the amount of warp of the tip of the needle 1 is minute, it is difficult to inject into blood vessels, etc., and the person who takes the injection feels pain and suffers from the pain.

In addition, when collecting the used syringe when the needle cap (6) is coupled to the needle hub (2) after injection to prevent the collector from being injured by the pointed needle (1) (1) If the end is injured by contact with the user's body can be infected with infectious diseases such as AIDS or hepatitis, there is a problem that the safety is reduced.

Figure 2 is an enlarged cross-sectional view of the main excerpt of another disposable syringe according to the prior art.

As shown, the needle hub 2 is integrally fixed and the needle hub 2 having the spiral protrusion 2a formed on the outer side thereof, and the spiral groove 5a corresponding to the protrusion 2a are formed in the discharge port 4. The outer cylinder 5 is formed on the side and the needle hub 2 is detachably fixed, and the push rod is installed in the outer cylinder 5 to move forward and backward and detachably connected to the needle hub 2 by a connecting means ( 3) and a needle cap (6) detachably fixed to the discharge port (4) to protect the needle (1).

At this time, the groove (2b) formed on the inner surface of the needle hub (2) with the connecting means is formed at the tip of the pusher (3) and detachably connect the pusher (3) with respect to the needle hub (2) Protruding pin (3a) for introducing the needle (1) into the outer cylinder (5) during backward movement.

In the drawing, reference numeral 7 is a stopper formed at the rear of the inner circumference of the outer cylinder 5 to prevent separation from the outer cylinder 5 when the pusher 3 moves backward, and 8 is mounted on the outer surface of the needle hub 2 and the needle O-ring is used to maintain the airtight state when the hub (2) is fixed to the discharge port (4).

In the disposable syringe structure shown in FIG. 2, after the injection needle 1 is collected by inflow into the outer cylinder 5, a process of coupling the needle cap 6 to the needle hub 2 is unnecessary. If the tip of the pointed needle (1) and the body of the user is injured and wounded has the advantage of protecting the user from disease infections, such as AIDS.

On the other hand, when the needle cap 6 is separated from the discharge port 4 in order to use the syringe, the injection needle 1 and the needle cap 6 are in contact with each other due to carelessness of the user. The tip of the needle 1 is easily bent.

In addition, since the O-ring 8 is mounted on the needle hub 2 for airtightness, the corresponding number of parts is increased, and the needle hub 2 and the push rod 3 are manufactured and assembled separately, thereby increasing the cost of labor due to the increase of labor. And there is a problem that the manufacturing cost is increased.

Therefore, an object of the present invention is to prevent the bending of the needle tip when removing the needle cap for protecting the needle, it is not necessary to cover the needle cap to discard the used syringe, even when the needle is introduced into the outer cylinder Disposable safety syringes that protect the collector and the person who collects the syringe (regarding the person who collects and discards the syringe) from infection caused by injury when the needle and body are in contact with one hand because they do not use one hand. In providing.

Another object of the present invention is to form a needle hub and a push rod integrally to shorten the labor of manufacturing and assembling them, and to eliminate the need for parts such as an O-ring, which is mounted to maintain confidentiality when the needle hub is detachably fixed to the outer cylinder. It is to provide a disposable safety syringe to reduce the cost and manufacturing cost.

Another object of the present invention is to make the needle hub and the push rod integrally by joints, and to combine the needle hub with the tapered discharge port of the outer cylinder, and then to move the push rod backward, cutting the joints so that the push rod is separated from the needle hub. It is to provide a disposable safety syringe to prevent the syringe from being reused to block transmission.

Another object of the present invention is to provide a disposable safety syringe that can improve the reliability by preventing the needle hub from detached from the external cylinder or leakage of the injection liquid due to the reaction force of the muscle force during injection to improve the reliability It is.

1 is an enlarged cross-sectional view of a disposable syringe according to the prior art,

Figure 2 is an enlarged cross-sectional view of another disposable syringe according to the prior art,

3 is an exploded perspective view of a disposable safety syringe according to the present invention,

Figure 4 (a, b) is a cross-sectional view of the disposable safety syringe according to the present invention,

5 is a cross-sectional view showing that the needle hub is coupled to the tapered discharge port in the disposable safety syringe according to the present invention,

Figure 6 is a cross-sectional view showing the separation of the needle hub and the push rod by moving the push rod when inhaling the drug solution from the injection bottle using a disposable safety syringe according to the present invention,

Figure 7 is a cross-sectional view showing that the needle hub and the push rod coupled to the push rod advance movement during injection using a disposable safety syringe according to the present invention,

8 is a cross-sectional view showing that the needle is introduced into the outer cylinder after injection using a disposable safety syringe according to the present invention,

9 is a view for explaining the injection process using a disposable safety syringe according to the present invention,

10 is a modified example of the disposable safety syringe structure according to the present invention.

* Explanation of symbols used in the main part of the drawing

101; Needle

102; Needle hub

103; Plunger

104; Outlet

105; External

106; Needle cap

107; stopper

109; Jam

110; Hook part

111; Extension

113; Second jungle bump

120; Joint

130; First jungle bump

The object of the present invention described above, the outer passage having a tapered discharge port,

A needle hub which is integrally connected to a push rod which is internally movable to the outer cylinder and accommodated in the outer cylinder, and the needle is fixed to the tip and detachably fixed to the discharge port;

A needle cap detachably supported on an outer surface of the needle hub and introduced through an outer cylinder inlet, and separated from the needle hub by a slight backward movement of the push rod in a state of exiting the discharge port;

The needle hub is fixed to the discharge port, and when the rod is moved backwards, the needle hub is separated from the needle hub by cutting the joint connecting the needle hub and the rod, and the rod is connected to the needle hub by moving the rod forward during injection. It is achieved by providing a disposable safety syringe, characterized in that it comprises a connecting means to allow the needle to flow into the outer cylinder during movement.

According to a preferred embodiment, the connecting means, a pair of engaging jaw formed opposite the lower end of the needle hub, is fitted to the engaging jaw at the time of injection, so as to move the needle hub from the discharge port to move into the outer cylinder during the push rod backward movement It is provided with the hook part.

In addition, the needle cap is formed radially on the lower end, and further comprises an extension piece for easily separating the needle cap from the needle hub to be caught in the distal end of the discharge port when moving the push rod in the state in which the needle cap exits the discharge port.

In addition, an annular protrusion is formed on an outer surface of the needle hub at a position corresponding to the inclined tip of the discharge port, and is generated when the needle hub is pressed against the blood vessel to maintain maximum horizontality with respect to blood vessels during injection. A first pusher preventing jaw to prevent a gap between the discharge port and the needle hub by the side pressure of the tapered discharge port; And

It is formed on the inner side of the discharge port corresponding to the protrusion formed on the outer side of the needle hub, the needle from the discharge port by the front pressure of the tapered discharge port generated by the reaction force of the muscle when the needle hub is coupled to the discharge port injection It is provided with a second push bump preventing the separation of the hub.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to describe in detail enough to be able to easily carry out the invention by those skilled in the art to which the present invention belongs. This does not mean that the technical spirit and scope of the present invention is limited.

3 to 9, the disposable safety syringe according to the present invention includes an outer cylinder 105 having a tapered discharge port 104, and a push rod 103 that is internally movable in the outer cylinder 105. It is integrally connected to the needle cylinder 102 is received in the outer cylinder 105, the needle 101 is fixed to the tip and detachably coupled to the tapered discharge port 104, and detachable to the needle hub 102 outer surface The needle cap 106 that is supported and separated from the needle hub 102 by being hung on the angular tip of the discharge hole 104 by the backward movement of the push rod 103 after exiting the discharge hole 104 by the forward movement of the push rod 103. )and,

After fixing the needle hub 102 to the discharge port 104, the needle hub (102) by cutting the joint (120) jointly connected to the needle hub (102) and the push rod (103) during the backward movement of the push rod (103) Separating the rod 103 from the, connecting the rod 103 to the needle hub 102 by the movement of the rod 103 when moving forward, and the injection needle 101 during the movement of the rod 103 after the injection to the outer cylinder 105 is provided with a connecting means to be introduced into the interior.

At this time, the connecting means, a pair of locking jaw 109 is formed to maintain a predetermined interval to face the lower end of the needle hub 102, and is detachably fitted to the locking jaw 109 when scanning on the human body (103) It is provided with a hook portion 110 to allow the needle hub 102 to be separated from the discharge port 104 during the reverse movement to flow into the outer cylinder 105.

In addition, the needle cap 106 is radially formed at the lower end, and the needle cap 106 is caught from the needle hub 102 from the needle hub 102 when the needle cap 106 is moved out of the discharge port while the rod 103 is moved backwards. An extension piece 111 is further provided to allow the 106 to be easily separated.

In addition, an annular protrusion is formed on the outer surface of the needle hub 102 at a position corresponding to the inclined tip of the discharge hole 104, and the needle hub 102 is coupled to the discharge hole 104 to be as horizontal as possible with respect to the blood vessel during the injection. A first push-out jaw 130 which prevents a gap between the discharge port 104 and the needle hub 102 by the side pressure of the tapered discharge port 104 generated when the needle is pressed to maintain the needle;

It is formed on the inner surface of the discharge port 104 to correspond to the protrusion 102a formed on the outer surface of the needle hub 102, the taper generated by the reaction force of the muscle during injection after coupling the needle hub 102 to the discharge hole 104 A second pusher stop 113 is provided to prevent the needle hub 102 from being separated from the discharge port 104 by the front pressure of the true discharge port 104.

In the drawing, reference numeral 107 denotes a stopper formed on the inner circumference of the outer cylinder 105 to prevent the push rod 103 from being separated from the outer cylinder 105, and 140 is a gasket mounted on the upper end of the rod 103 to be airtight. .

Hereinafter, the use example of the disposable safety syringe according to the present invention will be described in more detail with reference to FIGS. 4 to 9 as follows.

As shown in Fig. 4 (a), the needle cap 106 is detachably supported at the tip and the needle hub 102 is integrally connected by the joint 120 at the tip of the rod 103 Through the inlet of the lower end of the 105 is injected into the outer cylinder 105, the extension member 111 of the needle cap 106 fitted to the outer surface of the needle hub 102 is moved forward by moving the push rod 103 of the outer cylinder 105 The pressure is applied until it exits the angled tip of the tapered discharge port 104.

Next, the needle detachably supported on the outer surface of the needle hub 102 as the user grips the outer cylinder 105 downwardly with one hand in order to use the syringe. Cap 106 is caught on the tip of the discharge port 104 is separated from the needle hub 102 is separated.

That is, the needle cap 106 is an extension piece 111 radially formed at the lower end thereof is caught on the angular tip of the discharge port 104 to be easily separated from the needle hub 102 (imaginary line in Fig. 4 (b)). Shown].

Therefore, in order to use the needle 101, the needle cap 106 is held by the other hand so that the process of separating from the needle hub 102 is unnecessary, thereby preventing bending of the end of the needle 101. It becomes possible.

Next, as shown in FIG. 5, the push rod 103 is pressed to move forward until the needle hub 102 is coupled to the discharge port 104 of the outer cylinder 105. At this time, the protrusion 102a of the needle hub 102 is coupled to the first jamming jaw 113 of the discharge hole 104, and the first jamming jaw 130 of the needle hub 102 is formed at the angular tip of the discharge hole 104. I get caught.

Next, as shown in Figure 6, the needle hub 102 is inserted into the needle 101 for the injection bottle (A) in a state that is fixed to the discharge port 104 of the outer cylinder 105, As the rod 103 is moved backward, the chemical liquid from the injection bottle A is introduced into the outer cylinder 105.

At this time, when the backward movement of the push rod 103, the hooking jaw 109 of the needle hub 102 and the hook portion 110 of the hook portion 110 of the push rod 103 are integrally connected, thus cutting the needle hub. For the 102, the push rod 103 is to be separated separately.

At this time, the needle hub 102 is prevented from flowing in the front and rear direction by the fitting of the second sliding prevention jaw 113 formed on the inner surface of the discharge port 104 and the protrusion 102a of the needle hub 102 to prevent the external cylinder ( 105) It is prevented from entering inside.

Next, as shown in FIG. 7, the air is discharged by slightly moving the push rod 103 and then injected into the human body while moving the push rod 103 to administer the chemical liquid. At this time, since the hook portion 110 formed at the upper end of the pusher 103 is inserted through the space between the locking jaw 109 with respect to the locking step 109 formed at the lower end of the needle hub 102, the needle hub 102 and the pusher 103 ) Are integrally combined.

At this time, since the inclined surface (140a) of the gasket 140 and the inclined surface (102d) of the inclined surface (102d) of the needle hub 102 is wrapped around the engaging jaw (109) of the needle hub (102) needle hub (102) It is possible to prevent the locking step 109 and the hook portion 110 of the push rod 103 of the separation.

Therefore, as shown in FIG. 8, the needle 102 is separated from the second push bump 113 of the discharge port 104 as the push rod 103 is moved backward after the injection. The hub 102 is introduced into the outer cylinder 105 (at this time, as the gasket 140 pushes and expands the inclined surface 105a of the outer cylinder 105, the needle hub 102 is easily discharged from the discharge port 104. Can be separated].

That is, as the used needle 101 is introduced into the outer cylinder 105 due to the backward movement of the rod 103, it is unnecessary to cover the needle cap 106 on the needle 101 of the needle hub 102. Done.

Due to this, the tip generated when the needle cap 106 is applied to the needle hub 102 to recover the used needle 101 is a wound caused by contact with the sharp needle 101 and the infectious disease of the subject. You can prevent the infection.

On the other hand, as shown in Figure 9, when pressing the push rod 103 with the syringe slightly lying on the skin to give an injection to the patient, that is, when the needle 101 is inserted into the human body and injected to the blood vessels Since the needle 101 is pressed so as to be as horizontal as possible, even when lateral pressure is generated in the tapered discharge port 104 of the outer cylinder 105, the needle hub 102 is formed in an annular shape to form a tapered discharge port 104. It is possible to prevent the gap between the needle hub 102 and the discharge port 104 by the first push prevention jaw 130 is supported on the angled tip.

In addition, even when the front pressure is generated in the tapered discharge port 104 of the outer cylinder 105 when the needle 101 is inserted into the human body and scanned, the protrusions 102a and the discharge port formed on the outer surface of the needle hub 102 It is possible to prevent the flow of the needle hub 102 by the combination of the second sliding prevention jaw 113 formed in the 104.

At this time, when the front pressure is generated in the discharge port 104, the inclined surface 105a of the outer cylinder 105 is contracted in the radial direction to press the protrusion 102a of the needle hub 102 to press the needle hub 102 By tightening, the needle hub 102 is prevented from flowing back and forth with respect to the outer cylinder 105.

Therefore, due to the dual structure of the first sliding prevention jaw 130 corresponding to the lateral pressure formed on the upper and lower sides of the needle hub 102 and the protrusion 102a corresponding to the front pressure, the tapered discharge port 104 is generated at the time of scanning. Since it can withstand the pressure, it is possible to prevent the leakage of the injection liquid from the outer cylinder 105, and to prevent the needle hub 102 from being separated from the discharge port 104.

In addition, as shown in the phantom line in Figure 8, when the needle 101 is completely introduced into the outer cylinder 105 by the backward movement of the push rod 103, when moving the push rod 103 slightly forward, Since the hook portion 110 of the needle hub 102 is fluidly coupled to the catching jaw 109 of the pusher 103, the needle 101 is pressed completely so as to be hooked to the inner wall of the outer cylinder 105. Of course, in the process of recovering the syringe according to the bend can prevent the safety accident that the collector is injured due to the sharp needle 101.

As described above, in the disposable safety syringe according to the present invention, the needle cap 106 is moved backward from the needle hub 102 by slightly moving the push rod 103 in a state in which the outer cylinder 105 is held downward with one hand. Separating the needle 101 to prevent the end of the needle, and after the injection into the needle 101 into the outer cylinder 105 to cover the needle cap 106 to recover the used needle 101 The work becomes unnecessary.

Therefore, the needle cap 106 is not necessary to separate or cover the needle 101 so that the user can be completely prevented from being wounded or injured due to the sharp needle 101. It is possible to secure safety.

Meanwhile, as shown in FIG. 10, the disposable safety syringe according to the present invention is formed by separately separating the needle hub 102 and the push rod 103, and the protrusion 113 on the inner side of the tapered discharge port 104. And forming a groove 102c corresponding to the protrusion 113 in the needle hub 102, and as a connecting means for detachably coupling the needle hub 102 and the rod 103, the lower end of the needle hub 102; The hook portion 102b is formed at the end and the pair of engaging jaw 103b is formed so as to be opposed to the hook portion 102b so as to be detachably coupled to the hook portion 102b when the rod 103 is moved forward and backward. Of course it can form.

As described above, the disposable safety syringe according to the present invention has the following advantages.

The operation of placing the injection is performed with one hand to prevent the needle tip from bending when removing the needle cap for protecting the needle, and it is unnecessary to cover the needle cap to discard the used syringe. Since it is not used, the safety can be secured by protecting the collector and the collector recovering the syringe from infection caused by a wound when the needle contacts the body.

In addition, the needle hub and the push rod is formed integrally to shorten the workmanship for manufacturing and assembling them, and it is possible to reduce the cost and production cost by eliminating the parts such as the O-ring mounted to keep the needle hub confidential to the outer cylinder. .

In addition, by combining the needle hub and the push rod integrally to the discharge port of the outer cylinder and the push rod to be separated from the needle hub to move the push rod backwards to prevent the reuse of the syringe can be prevented from being transmitted from the source.

In addition, when the needle is pressed to keep the needle as horizontal as possible during injection, the needle pressure is prevented from escaping from the external cylinder or leaked from the external cylinder due to the lateral pressure generated at the tapered discharge port. You can.

Claims (4)

An outer cylinder having a tapered discharge port; A needle hub which is integrally connected to a push rod which is internally movable forward and backward to the outer cylinder and is received in the outer cylinder, and the needle is fixed to the tip and detachably fixed to the discharge port; A needle cap detachably supported on an outer surface of the needle hub and introduced through the outer cylinder inlet and separated from the needle hub by the push rod backward movement in a state of exiting the discharge port; And The needle hub is fixed to the discharge port and the rod is separated from the needle hub by cutting the joint connecting the needle hub and the rod during the backward movement of the rod, and the rod is connected to the needle hub by the rod forward movement during injection. And a connecting means for allowing the needle to flow into the outer cylinder when the push rod is moved backward after the injection. According to claim 1, The connecting means; A pair of locking jaws formed to face the lower end of the needle hub; And Disposable safety syringe characterized in that it is fitted to the locking jaw during the injection and provided with a hook to move the needle hub from the discharge port to flow into the outer cylinder during the backward movement of the push rod. The needle cap of claim 1 or 2, wherein the needle cap is radially formed at the lower end of the needle cap, and the needle cap is easily caught from the needle hub by being caught by the tip of the discharge port when the push rod is moved backward while the needle cap exits the discharge port. Disposable safety syringe further comprising an extension to make. According to claim 1 or claim 2, wherein the annular protrusion is formed in the outer surface of the needle hub at a position corresponding to the inclined tip of the discharge port, the needle hub is coupled to the discharge port and maintained as horizontal as possible with respect to the blood vessel at the time of injection A first pusher preventing jaw to prevent a gap between the discharge port and the needle hub by the side pressure of the tapered discharge port generated when the needle is pressed; And It is formed on the inner side of the discharge port corresponding to the protrusion formed on the outer side of the needle hub, the needle from the discharge port by the front pressure of the tapered discharge port generated by the reaction force of the muscle when the needle hub is coupled to the discharge port injection Disposable safety syringe, characterized in that it comprises a second push bump preventing the separation of the hub.