KR20190074561A - Non-reusable disposable safety syringe - Google Patents

Abstract

Disclosed is a non-reusable disposable safety syringe which, once an injection solution is completely injected, prevents a contaminated injection needle from being exposed externally by automatically retracting the same into a cylinder. The non-reusable disposable safety syringe may include: a cylinder which is provided with a space part into which an injection solution can be injected and which is provided with a needle set unit insertion part; a push unit which is slidably coupled to the space part such that the push unit slides along the cylinder to inject the injection solution into the space part or to discharge the injection solution injected in the space part to the outside of the cylinder; and a needle set unit which is inserted in the needle set unit insertion part such that at least part of an injection needle is exposed outside the cylinder, and which is fixed inside the cylinder so as to be elastically supported by an elastic member inserted in the needle set unit insertion part. In particular, when pressed with a predetermined pressure or greater by a push unit sliding along the cylinder, the needle set unit is released and moves toward the push unit due to the restoring force of the elastic member.

Description

A non-reusable disposable safety syringe {NON-REUSABLE DISPOSABLE SAFETY SYRINGE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable safety syringe which can not be reused, and more particularly, it relates to a disposable safety syringe which can not be reused after being used once and reused to prevent a safety accident such as a user being stuck to an injection needle Lt; RTI ID = 0.0 > safety < / RTI >

Generally, disposable syringes are universally used in all fields of medical treatment such as blood sampling, drug administration, and fluid supply of a patient. These disposable syringes prohibit reuse in order to prevent secondary infection, .

In the case of such a disposable syringe, after use, the cap must be connected to the luer lock tip after use so that the needle is not exposed to the outside, and the luer lock tip coupled with the cap from the syringe must be detached and discarded.

However, the luer lock tip is tightly coupled with the syringe so that the medicament discharged from the syringe is moved only to the syringe, so that when hospital workers separate the syringe after use, the luer lock tip from which the syringe needle is coupled is separated There is a problem that a safety accident such as a secondary infection is generated by a user such as a hospital worker being stuck to a contaminated needles during use due to exposure of the needle from the luer lock tip.

Therefore, in recent years, the luer lock tip has been separated from the capillary lock tip without being separated from the syringe, so as to prevent the occurrence of a safety accident such as a secondary infection caused by a user being stabbed by a contaminated needle as the needle is exposed Needle needle separators have been developed and used.

The needle separator is a device for separating and disposing a needle from a syringe by a gripping means for gripping the needle and a driving means for rotating the gripping means. It is possible to separate the needle from the syringe without covering the needle, thereby preventing a safety accident of the user. However, a separate installation space is required, and manufacturing and operating costs are additionally incurred.

In addition, when the needle dispenser is installed and used, the medical staff using the syringe must manually perform the operation of separating the injection needle from the syringe after using the syringe. However, in case of busy medical time, There is a problem that the used syringe is frequently discarded without proceeding to separate the needle from the needle.

Korean Utility Model No. 20-0336221 (Dec. 2003)

An object of the present invention is to provide a non-reusable disposable safety syringe which is automatically inserted into a cylinder and is not exposed to the outside when the injection of the injection liquid is completed.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

In order to achieve the above object, the present invention provides a blood pressure monitor comprising: a cylinder provided with a space for injecting an injection liquid therein and provided with a needle set unit insertion part; A needle unit inserted into the needle set insertion unit such that at least a part of the injection needle protrudes out of the cylinder and is inserted into the needle set insertion unit, Which is fixed to the inside of the cylinder so as to be resiliently supported by the resilient member and moves to the pushing unit side by the restoring force of the elastic member when the pushing unit is pressed by a pushing unit which is slid along the cylinder, A non-reusable once-through set unit Present a safety syringe.

For example, the cylinder includes a body portion provided with a space for injecting the injectable liquid therein and having at least one fixing protrusion protruding thereon for fixing the needle set unit to the inner peripheral surface, and a body portion extending from the body portion to communicate with the body portion. A needle set unit insertion portion into which the needle set unit is inserted so that at least a part of the injection needle protrudes to the outside and a needle insertion unit inserted into between the needle set unit and the needle set unit insertion portion protruding from the inner circumferential surface of the needle set unit insertion portion, And a supporting jaw for supporting the elastic member.

In addition, the cylinder may further include a grip portion protruding from the main body portion so that the user can grip the grip with one hand.

In addition, the cylinder may further include a separation preventing protrusion protruding from the inner circumferential surface of the main body to prevent the pushing unit from being released to the outside of the main body due to the engagement of the first piston of the pushing unit.

For example, the push unit includes a push rod inserted into a space portion of the cylinder to be slidably moved along the cylinder, and a first piston coupled to the push rod to seal the push rod and the cylinder .

The push unit may further include a plurality of protrusions protruding from an outer circumferential surface of the first piston to improve a sealing force between the push rod and the cylinder.

In addition, the pushing unit is coupled to an end of the push rod inserted in the cylinder, and is elastically deformed when it contacts the needle set unit, so that the pushing unit is pressed through the needle set unit And a second piston for allowing the gas to be discharged.

Here, it is preferable that a portion of the second piston which is in contact with the needle set unit is formed to be convex.

On the other hand, the push unit may further include a pressing portion provided on the push rod so that the user can easily press the push rod with a finger.

For example, the needle set unit may include a rod portion inserted into the needle set unit insertion portion to partially protrude from the space portion of the cylinder and provided with a needle insertion hole communicating with an outer space portion and a space portion of the cylinder, An elastic member interposed between the needle set unit inserting portion and the rod portion so as to be supported by the supporting jaws of the needle set unit inserting portion, and an elastic member interposed between the needle set unit inserting portion and the rod portion, A fixing portion protruding from the outer circumferential surface of the rod portion protruding from the space portion and being supported by the elastic member and having a fixing groove inserted and fixed to a fixing jaw protruding from the inner circumferential surface of the body portion; And an elastic member which is interposed between the elastic member and the needle set unit insertion portion and slides along the cylinder And a cutting blade for cutting the fixing portion and moving the rod portion to the pushing unit side by the restoring force of the elastic member to insert the needle into the cylinder when the fixing portion is pressed by the pushing unit at a predetermined pressure or more can do.

Here, the needle insertion hole is formed so that the portion communicating with the space portion is gradually widened toward the space portion side, so that a part of the second piston of the pushing unit can be closely inserted while being inserted, thereby improving the sealing force.

In addition, the needle set unit may be configured such that the thickness of the fixing portion is reduced so that the fixing portion can be more easily cut by the cutting blade, and at the same time, when the cutting blade cuts the fixing portion, And may further include a cutting groove provided in the fixing portion.

Here, the elastic member has an elastic force greater than a friction force generated between the first piston of the push unit and the inner circumferential surface of the cylinder, so that when the fixed portion is cut by the cutting blade, The pushing unit may be inserted into the cylinder together with the pushing unit while pushing the pushing unit so that the injection needle is inserted into the cylinder.

On the other hand, the elastic member has an elastic force less than a frictional force generated between the first piston of the push unit and the inner circumferential surface of the cylinder, so that the user can push the push unit to the opposite side of the needle set unit The rod may be moved toward the push unit by the restoring force of the elastic member so that the needle is inserted into the cylinder.

In another example, the push unit is inserted into the space portion of the cylinder so as to be slidably moved along the cylinder, and is moved to the push unit side by the restoring force of the elastic member when the needle set unit is disengaged by the push unit. And a push rod which is provided at an end of the push rod inserted in the cylinder so as to close the needle storage hole, A rod portion of a needle-set unit which is cut together with a fixing portion by a cutting edge and is moved to the push-unit side by an original restoring force of the elastic member, a cutting surface for inserting the injection needle into the needle storage hole of the push rod, A pushing-portion cap detachably coupled to an end portion of the push rod disposed in the push rod, So as to seal the side- and cylinder may comprise a first piston coupled to the push rod.

The push unit may further include a plurality of protrusions protruding from an outer circumferential surface of the first piston to improve a sealing force between the push rod and the cylinder.

In addition, the pushing unit is coupled to the cutting face so as to be elastically deformed when contacted with the needle set unit, so as to be discharged through the needle set unit without leaving the injected liquid in the cylinder space. As shown in FIG.

Here, it is preferable that a portion of the second piston which is in contact with the needle set unit is formed to be convex.

As described above, according to the disposable safety syringe according to the embodiment of the present invention, when the user pushes the push unit to completely remove the pressing force applied to the push unit after injecting the injection liquid into the patient, The needle is automatically inserted into the needle storage hole of the push rod so that the contaminated needle is not exposed to the outside of the syringe.

Therefore, a user who uses a syringe, such as a hospital worker, does not need to manually dispose of contaminated needles after using the syringe to dispose of the needle, which is advantageous in that the ease of use can be greatly improved.

In addition, since the user does not need to remove the contaminated needles after the use of the syringe by the user, it is possible to prevent safety accidents such as occurrence of secondary infection by the user being stuck to the contaminated needles during use of the syringe There are advantages.

On the other hand, if a disposable safety syringe which can not be reused according to an embodiment of the present invention is used, it is not necessary to install a separate needle dispenser to prevent a safety accident such as a secondary infection, There is an advantage that safety accidents can be prevented at the source without cost input.

In addition, the disposable safety syringe according to an embodiment of the present invention can prevent the contaminated needles from being automatically inserted into the cylinder or the needle storage hole when the injection solution is completed and is not exposed to the outside, It has the advantage that workers can safely dispose of contaminated syringes.

Therefore, even if the disused syringe is collected from the waste disposal company and the needle is separated and disused, the contaminated syringe can be safely separated and discarded due to the absence of the exposed syringe.

In addition, the disposable safety syringe which can not be reused according to an embodiment of the present invention simply separates the pressurizing portion and the cap coupled to the push rod, so that the contaminated needles stored in the needle storage hole It is possible to rapidly and safely separate and collect the contaminated syringe.

Ultimately, the non-reusable disposable safety syringe according to an embodiment of the present invention can not only prevent the second infection of the medical practitioner by contaminated needles after the use, Therefore, safety and reliability of the product can be ensured, and the contaminated needles are not exposed to the outside even after the disposal, so that the convenience of the product is ensured and the additional operation cost of the hospital is not generated. Can be greatly improved.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

1 is a sectional view for explaining a non-reusable disposable safety syringe according to the first embodiment of the present invention;
2 is a detailed view of 'A' in FIG. 1
3 is a cross-sectional view illustrating a non-reusable disposable safety syringe according to a second embodiment of the present invention
4 is a detailed view of 'B' in FIG. 3

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the following description. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprising" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

≪ Embodiment 1 >

1 is a cross-sectional view illustrating a non-reusable disposable safety syringe according to a first embodiment of the present invention, and FIG. 2 is a detailed view of 'A' of FIG.

Referring to FIGS. 1 and 2, a non-reusable disposable safety syringe 100 according to the first embodiment of the present invention may include a cylinder 110, a push unit 120, and a needle set unit 130 have.

The cylinder 110 may be provided with a space 111a through which an injection liquid can be injected. Meanwhile, a needle set unit inserting unit 112 may be provided at one end of the cylinder 110.

For example, the cylinder 110 may include a body portion 111, a needle set unit insertion portion 112, and a support jaw 113.

The body part 111 may be formed in a hollow pipe shape so that a space part 111a into which the injectable liquid is injected may be provided. On the inner circumferential surface of the body part 110, 130 may be formed to protrude from at least one fixing step 111b.

The needle set unit inserting portion 112 is extended from the main body portion 111 so as to communicate with the space portion 111a of the main body portion 111 and at least a part of the needles 132 protrudes to the outside, The set unit 130 can be inserted therein.

Here, the needle set unit inserting portion 112 is preferably formed integrally with the main body 111 so that the inner circumferential surface thereof has a diameter smaller than the diameter of the space portion 111a.

The supporting jaw 113 is protruded from one end of the inner circumferential surface of the needle set unit inserting portion 112 and is inserted into the elastic member 133 inserted between the needle set unit 130 and the needle set unit inserting portion 112, .

Meanwhile, the cylinder 110 may further include a gripper 114.

The gripper 114 is configured to allow the user to easily grip the disposable safety syringe 100 which can not be reused according to the first embodiment of the present invention with one hand and to easily push the push unit 120, And may protrude from the other end of the outer circumferential surface of the base 111.

In addition, the cylinder 110 may further include a release preventing chuck 115.

The release bout 115 is protruded from the other end of the inner circumferential surface of the main body 111 to engage the first piston 122 of the push unit 120 so that the push unit 120 can be engaged with the main body 111 So that it can be prevented from being released to the outside of the vehicle.

For example, the separation preventing tails 115 may be tapered so as to gradually narrow the diameter of the body portion 111 from the other end of the body portion 111 toward the one end portion by a predetermined distance, The push unit 120 inserted into the space portion 111a of the body portion 111 may be inserted into the space portion 111a of the push unit 120. However, The pushing unit 120 is pressed by the pushing unit 120 to release the pushing unit 120 from the main body part 111. As a result, Even when the needle set unit 130 is moved toward the push unit 120 due to the restoring force of the needle 133, the pushing unit 120 is prevented from being released to the outside of the cylinder 110, And is prevented from being exposed to the outside of the cylinder 110 So that the user can fundamentally prevent accidents such as the stick with contaminated needles.

The push unit 120 is slid along the cylinder 110 to inject the injection liquid into the space portion 111a or to discharge the injection liquid injected into the space portion 111a to the outside of the cylinder 110. [ (Not shown).

For example, the push unit 120 may include a push rod 121 and a first piston 122.

The push rod 121 may be inserted into the space 111a of the cylinder 110 so as to be slid along the cylinder 110.

The first piston 122 may be coupled to one end of the outer circumferential surface of the push rod 121 so as to close the gap between the push rod 121 and the cylinder 110.

Here, the push unit 121 may further include a plurality of protrusions 123.

The plurality of protrusions 123 may protrude from the outer circumferential surface of the first piston 122 to improve a sealing force between the push rod 121 and the cylinder 110.

Meanwhile, the push unit 120 may further include a second piston 124.

The second piston 124 is coupled to an engaging groove 125 provided on one side of the push rod 121 inserted in the cylinder 110 and elastically deformed when the needle is contacted with the needle set unit 130 So that the injected liquid in the space portion 111a of the cylinder 110 can be discharged through the needle set unit 130 without leaving the injected liquid.

For example, the second piston 124 is closely contacted with the other side of the needle insertion hole 131a, which will be described later, of the needle set unit 130 so that the injection needle 132 The portion that contacts the needle insertion hole 131a is formed to be convex.

In addition, the push unit 120 may further include a pressing unit 126. [

The pushing unit 126 may be configured to allow the user to grip the disposable safety syringe 100 which can not be reused according to the first embodiment of the present invention with one hand, And may be provided at the other end of the push rod 121, that is, at the end of the push rod 121 exposed to the outside of the cylinder 110.

For example, the pressing portion 126 may be provided at the end of the push rod 121 in a circular or oval shape.

The needle set unit 130 is inserted into the needle set unit insertion section 112 such that at least a part of the injection needle 132 protrudes out of the cylinder 110 and is inserted into the needle set unit insertion section 112 And is fixed to the inside of the cylinder 110 so as to be elastically supported by the elastic member 122. When the pushing unit 120 is pressed by a push unit 120 sliding along the cylinder 110, 133 to the push unit 120 side.

As described above, in the disposable safety syringe 100 according to the first embodiment of the present invention, when the needle set unit 130 is pressed by the push unit 120 at a predetermined pressure or more, The fixed needle set unit 130 is unfixed and moved to the push unit 120 side by the restoring force of the elastic member 133 so that the injection needle 132 is inserted into the cylinder 110.

That is, in the disposable safety syringe 100 according to the first embodiment of the present invention, when the user presses the push unit 120 and completes the injection of the injection liquid, the push unit 120 moves the needle set unit 130 The needle set unit 130 is unlocked and the needle set unit 130 is moved toward the push unit 120 by the restoring force of the elastic member 133 so that the needle is inserted into the cylinder 110 So that a safety accident such as a secondary infection caused by a user being stuck to the contaminated needles 132 can be prevented.

For example, the needle set unit 130 may include a rod portion 131, a needle 132, an elastic member 133, a fixing portion 134, and a cutting blade 135.

The rod portion 131 is inserted into the needle set unit insertion portion 112 so that a part of the rod portion 131 protrudes into the space portion 111a of the cylinder 110 and communicates with the outside of the cylinder 110 and the space portion 111a A needle insertion hole 131a may be provided.

The needle insertion hole 131a is formed so that the portion communicating with the space portion 111a gradually widens toward the space portion 111a so that a part of the second piston 124 of the push unit 120 So that the sealing force is further enhanced to allow the needle insertion hole 131a and the injection needle 132 to be sequentially discharged through the space 111a without leaving the injection fluid.

The injection needle 132 may be coupled to the needle insertion hole 131a such that at least a portion of the injection needle 132 protrudes outside the cylinder 110.

The elastic member 133 may be interposed between the needle set unit inserting portion 112 and the rod portion 131 so as to be supported by the support jaws 113 of the needle set unit inserting portion 112.

Here, a coil spring is preferably used as the elastic member 133.

For example, the elastic member 133 may have an elastic force greater than a frictional force generated between the first piston 122 of the push unit 120 and the inner circumferential surface of the cylinder 110.

If the elastic member 133 having an elastic force greater than the frictional force generated between the first piston 122 of the push unit 120 and the inner circumferential surface of the cylinder 110 is used, The rod unit 131 automatically pushes the push unit 120 by the restoring force of the resilient member 133 so that the pusher unit 120 moves together with the pusher unit 120 together with the cylinder 110, So that the injection needle 132 can be inserted into the cylinder 110 automatically.

The elastic member 133 may have an elastic force less than a frictional force generated between the first piston 122 of the push unit 120 and the inner circumferential surface of the cylinder 110. In other words,

When the elastic member 133 having an elastic force equal to or lower than the frictional force generated between the first piston 122 of the push unit 120 and the inner circumferential surface of the cylinder 110 is used, The rod unit 131 is not moved to the push unit 120 side due to the restoring force of the elastic member 133 and the user manually pushes the push unit 120 to the needle set unit 120. [ The rod 131 is moved toward the push unit 120 by the restoring force of the elastic member 133 so that the injection needle 132 can be inserted into the cylinder 110 only when the rod 131 is moved to the opposite side of the cylinder 130. [

That is, when the user wants to automatically insert the injection needle 132 into the cylinder 110, it is generated between the first piston 122 of the push unit 120 and the inner circumferential surface of the cylinder 110 The elastic member 133 having an elastic force exceeding the frictional force can be selected and applied. When it is desired to manually insert the injection needle 132 into the cylinder 110, The elastic member 133 having an elastic force exceeding a friction force generated between the piston 122 and the inner circumferential surface of the cylinder 110 can be selected and applied.

The fixing portion 134 may protrude from the outer circumferential surface of the rod portion 131 protruding into the space portion 111a of the cylinder 110 and may be supported by the elastic member 133, 134 may be provided with a fixing groove 134a which is inserted and fixed in a fixing protrusion 111b protruding from the inner circumferential surface of the main body 111. [

The cutting blade 135 is interposed between the elastic member 133 and the needle set unit insertion portion 112 so as to protrude at least part of the space portion 111a of the cylinder 110, When the fixed portion 134 is pressed by a pushing unit 120 slidingly moved by a predetermined pressure or more, the fixing portion 134 is cut so that the elastic member 133 returns to the pushing unit 120 side The rod 131 is moved so that the injection needle 134 is inserted into the cylinder 110.

Further, the needle set unit 130 may further include a cutting groove 136.

The cutting groove 136 is provided in the fixing portion 134 to reduce the thickness of the fixing portion 134 so that the fixing portion 134 can be more easily cut by the cutting blade 135, When the cutting edge 135 is cut by the fixing portion 134, the cutting edge 135 is inserted and is more firmly fixed without being shaken, so that the fixing edge can be cut more stably.

1 and 2, the operation of the disposable safety syringe 100, which can not be reused according to the first embodiment of the present invention, will be described.

1 and 2, in order to inject an injection using the disposable safety syringe 100, which can not be reused according to the first embodiment of the present invention, the injection needle 132 is first inserted into the injection vial, The unit 120 is pulled out of the cylinder 110 to inject a desired amount of the injection liquid into the space portion 111a of the cylinder 110. [

When a desired amount of injection fluid is injected into the space part 111a of the cylinder 110 as described above, the injection needle 132 is inserted into the injection site of the patient and the pushing unit 120 is moved toward the needle set unit 130 The injection liquid injected into the space portion 111a of the cylinder 110 is injected into the injection region of the patient through the needle insertion hole 131a of the needle set unit 130 and the injection needle 132 in sequence.

When the second piston 122 of the push unit 120 is brought into close contact with the needle insertion hole 131a of the rod 131 by moving the push unit 120 to the needle set unit 130 as described above, When the pushing unit 120 is further pressed toward the needle set unit 130 by a predetermined pressure or more in a state in which the second piston 124 is in close contact with the needle insertion hole 131a of the rod portion 131 The fixing portion 134 fixed to the cylinder 110 is pressed and cut by the cutting blade 135. [

Since the fixing portion 134 of the needle set unit 130 is supported by the elastic member 133, when the cutting groove portion 136 is cut by the cutting blade 135, And is moved toward the push unit 120 side together with the rod portion 131 and the injection needle 132 by the restoring force.

When the elastic force of the elastic member 133 is greater than the frictional force generated between the first piston 122 of the push unit 120 and the inner circumferential surface of the cylinder 110, The pushing unit 120 is automatically pushed to the opposite side of the needle set unit 130 by the fixing portion 134 which is moved toward the pushing unit 120 side so that the fixing portion 134 and the rod portion 131, The cylinder 132 is automatically inserted into the cylinder 110 and is not exposed to the outside of the cylinder 110.

If the elastic force of the elastic member 133 is equal to or smaller than the frictional force generated between the first piston 122 of the push unit 120 and the inner circumferential surface of the cylinder 110, When the fixed portion 134, which is moved toward the push unit 120 by the restoring force, comes into contact with the push unit 120, it stops moving to the opposite side of the needle set unit 130 and stops. When the user slides the push unit 120 to the opposite side of the needle set unit 130, the fixing unit 134, the rod unit 131, and the injection needle 132 are moved to the original position of the elastic member 133 It is inserted into the cylinder 110 by the restoring force and is not exposed to the outside of the cylinder 110.

≪ Embodiment 2 >

FIG. 3 is a cross-sectional view illustrating a non-reusable disposable safety syringe according to a second embodiment of the present invention, and FIG. 4 is a detailed view of FIG. 3 'B'.

The non-reusable disposable safety syringe 100 according to the present embodiment is the same as the disposable safety syringe 100 according to the first embodiment except for the push unit 120. Therefore, the same or similar components as those of the first embodiment are denoted by the same reference numerals, and a detailed description of the remaining components except for the push unit 120 is omitted.

3 and 4, the push unit 120 according to the second embodiment of the present invention includes a push rod 121, a cutting surface 127, a combination cap 128, and a first piston 122 .

The push rod 121 is inserted into the space portion 111a of the cylinder 110 so as to be slid along the cylinder 110 and the push rod 121 is pushed by the pushing unit 120 when the needle- And a needle storage hole 121a in which the rod portion 131 and the injection needle 132 are inserted and stored are provided in the fixed portion of the needle set unit 130 moved to the push unit 120 side by the restoring force of the needle 133 .

The cutting face 127 is provided at an end of the push rod 121 inserted in the cylinder 110 to close the needle storage hole 121a and is inserted into the cutting edge 135 of the needle set unit 130, The rod portion 131 of the needle set unit 130 and the injection needle 132 which are cut together with the fixing portion 134 and moved to the push unit 120 side by the restoring force of the elastic member 133 by the restoring force of the elastic member 133, To be inserted into the needle storage hole 121a of the rod 121.

The pressing portion 128 is detachably coupled to an end portion of the push rod 121 located outside the cylinder 110 so that the push rod 121 can be easily pushed by a user, When the completed syringe is discarded, the syringe needle 132 stored in the needle storage hole 121a of the push rod 121 can be safely taken out from the push rod 121 to be separated and discarded.

The first piston 122 may be coupled to one end of the outer circumferential surface of the push rod 121 so as to close the gap between the push rod 121 and the cylinder 110.

Further, the push unit 120 may further include a plurality of protrusions 123.

The plurality of protrusions 123 may protrude from the outer circumferential surface of the first piston 122 to improve a sealing force between the push rod 121 and the cylinder 110.

In addition, the push unit 120 may further include a second piston 124.

The second piston 124 is coupled to the cutting surface 127 and is elastically deformed when it contacts the needle set unit 130 so that the second piston 124 is pressurized so that the injected liquid in the space portion 111a of the cylinder 110 And can be discharged through the needle set unit 130.

Here, it is preferable that the portion of the second piston 124 which is in contact with the needle set unit 130 is formed to be convex.

3 and 4, the operation of the non-reusable disposable safety syringe 100 according to the second embodiment of the present invention will be described.

Referring to FIGS. 3 and 4, in order to inject an injection using the disposable safety syringe 100, which can not be reused according to the second embodiment of the present invention, the injection needle is first inserted into the injection vial, Is pulled out of the cylinder 110 to inject a desired amount of the injection liquid into the space portion 111a of the cylinder 110. [

When a desired amount of injection fluid is injected into the space part 111a of the cylinder 110 as described above, the injection needle 132 is inserted into the injection site of the patient and the pushing unit 120 is moved toward the needle set unit 130 The injection liquid injected into the space portion 111a of the cylinder 110 is injected into the injection region of the patient through the needle insertion hole 131a of the needle set unit 130 and the injection needle 132 in sequence.

When the second piston 124 of the push unit 120 is brought into close contact with the needle insertion hole 131a of the rod unit 131 by moving the push unit 120 to the needle set unit 130 as described above, The pushing unit 120 is further pressed toward the needle set unit 130 by a predetermined pressure or more in a state in which the second piston 124 is in close contact with the needle insertion hole 131a of the rod portion 131 The fixing portion 134 fixed to the cylinder 110 and the cutting surface 127 of the push unit 120 are pressed and cut by the cutting blade 135. [

Since the fixing portion 134 of the needle set unit 130 is supported by the elastic member 133, when the cutting groove portion 136 is cut by the cutting blade 135, And is moved to the side of the push unit 120 together with the cutting face 127, the rod portion 131 and the injection needle 132 by the restoring force.

In the case of the elastic member 133 applied to the non-reusable disposable safety syringe 100 according to the second embodiment of the present invention, the first piston 122 of the push unit 120 and the inner peripheral surface of the cylinder 110 When the cutting face 127 and the cutting groove portion 136 of the fixing portion 134 are cut by the cutting blade 135 by applying the elastic member 133 having an elasticity greater than the friction force generated between the cutting face 127 and the fixing portion 134, The fixing portion 134 is pushed toward the needle storage hole 121a of the push rod 121 by the restoring force of the member 133 so that the cutting surface 127, the fixing portion 134, The rod 131 and the injection needle 132 are automatically inserted and stored so that the injection needle 132 is not exposed to the outside.

Meanwhile, in the case of the non-reusable disposable safety syringe 100 according to the second embodiment of the present invention, when the push rod 121 is detachably coupled to the pushing part cap 128, The injection needle 132 stored in the needle storage hole 121a of the push rod 121 can be safely taken out from the push rod 121 to be separated and discarded.

As described above, the disposable safety syringe 100, which is not reusable according to an embodiment of the present invention, may be configured such that the user pushes the push unit 120 to inject the injection liquid in the cylinder 110 into the patient, The injection needle 132 is automatically inserted into the cylinder 110 or into the needle storage hole 121a of the push rod 21 so that the contaminated injection needle 132 is not exposed to the outside of the syringe do.

Therefore, a user using a syringe such as a hospital worker does not need to manually dispose of the contaminated needles 132 after using the syringe, so that the usability can be greatly improved.

In addition, since the user does not need to remove the contaminated needles 132 by hand after using the syringe, it is possible to prevent a safety accident such as a second infection by being stuck to the contaminated needles 132 during use of the syringe It can be prevented at the source.

On the other hand, if the disposable safety syringe 100, which can not be reused according to an embodiment of the present invention, is used, the hospital side need not install a separate needle dispenser for preventing a safety accident such as secondary infection, It is possible to prevent safety accidents at the source without incurring additional costs to the operation.

In addition, the disposable safety syringe 100 according to an embodiment of the present invention is configured such that the contaminated needle 132 is automatically inserted into the cylinder 110 or into the needle storage hole 121a So that medical workers can safely dispose of contaminated syringes even during busy times of medical treatment.

Accordingly, when the discarded syringe is collected at the waste disposal company and the syringe needle 132 is separated and discarded, the contaminated syringe needle 132 is not exposed to the syringe so that the contaminated syringe can be safely separated and discarded do.

In addition, the disposable safety syringe 100, which can not be reused according to an embodiment of the present invention, can be easily removed from the push rod 121 by simply separating the cap 128, which is coupled to the pushrod 121, The contaminated needles 132 stored in the needle storage holes 121a can be quickly and safely separated and collected, thereby greatly reducing the number of waste collection and disposal of contaminated syringes.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

110; Cylinder 120; Push unit
130; Needle set unit

Claims (18)

A cylinder provided with a space in which an injection liquid can be injected therein and having a needle set unit insertion portion;
A push unit slidably moved along the cylinder to be pushed into the space so as to inject the injection liquid into the space or to discharge the injected liquid injected into the space into the space; And
The needle set insertion portion being fixed to the inside of the cylinder so as to be elastically supported by the elastic member inserted into the needle set insertion portion so that at least a part of the injection needle protrudes out of the cylinder, And a needle set unit which is released when the pressure is higher than a predetermined pressure by the push unit and is moved to the push unit side by the restoring force of the elastic member. The method according to claim 1,
The cylinder
At least one fixing protrusion protruding from the inner circumferential surface of the needle unit to fix the needle set unit;
A needle set unit insertion portion extending from the main body portion to communicate with the main body portion, the needle set unit being inserted such that at least a part of the injection needle protrudes to the outside; And
And a support jaw which is formed to protrude from the inner peripheral surface of the needle set unit insertion portion and supports the elastic member inserted between the needle set unit and the needle set unit insertion portion. 3. The method of claim 2,
The cylinder
The disposable safety syringe according to any one of claims 1 to 3, further comprising a grip portion protruding from the main body portion so that the user can grasp the grip with one hand. 3. The method of claim 2,
The cylinder
Further comprising a separation preventing protrusion formed on an inner circumferential surface of the main body to prevent the pushing unit from being released to the outside of the main body by engaging the first piston of the pushing unit. The method according to claim 1,
The push unit includes:
A push rod inserted into the space of the cylinder to be slidably moved along the cylinder; And
And a first piston coupled to the push rod to seal between the push rod and the cylinder. 6. The method of claim 5,
The push unit includes:
Further comprising a plurality of protrusions protruding from an outer circumferential surface of the first piston so as to improve a sealing force between the push rod and the cylinder. 6. The method of claim 5,
The push unit includes:
And the second needle unit is coupled to an end of the push rod inserted in the cylinder and elastically deformed when the needle unit is in contact with the needle set unit so as to be discharged through the needle set unit without leaving the injected liquid in the cylinder space. A non-reusable disposable safety syringe further comprising a piston. 8. The method of claim 7,
And the second piston includes:
Characterized in that the portion which is in contact with the needle set unit is convexly formed. 6. The method of claim 5,
The push unit includes:
Further comprising a pressing portion provided on the push rod so that a user can easily press the push rod with a finger. The method according to claim 1,
The needle set unit includes:
A rod portion inserted into the needle set unit insertion portion such that a part thereof protrudes from the space portion of the cylinder, and a needle insertion hole communicating with an outer space portion and a space portion of the cylinder is provided;
An injection needle coupled to the needle insertion hole such that at least a portion thereof protrudes outside the cylinder;
An elastic member interposed between the needle set unit inserting portion and the rod portion so as to be supported by the supporting jaw of the needle set unit inserting portion;
A fixing part protruding from the outer circumferential surface of the rod portion protruding from the space of the cylinder and being supported by the elastic member and having a fixing groove inserted and fixed in a fixing protrusion protruding from the inner circumferential surface of the body; And
When the fixing unit is pressed at a predetermined pressure or higher by a push unit interposed between the elastic member and the needle set unit insertion unit so as to protrude at least a part of the space of the cylinder and slid along the cylinder, And a cutting blade for moving the rod portion to the push unit side by an original restoring force of the member so that the needle is inserted into the cylinder. 11. The method of claim 10,
The needle insertion hole
Wherein a portion of the second piston communicating with the space portion is gradually widened toward the space portion so that a part of the second piston of the pushing unit can be inserted while being closely contacted to improve the sealing force. syringe. 11. The method of claim 10,
The needle set unit includes:
Wherein a thickness of the fixing portion is reduced so that the fixing portion can be more easily cut by the cutting blade and a cutting groove provided in the fixing portion is inserted to prevent the cutting blade from being shaken when the cutting edge cuts the fixing portion Further included non-reusable disposable safety syringes. 11. The method of claim 10,
The elastic member
When the fixed portion is cut by the cutting blade by having an elastic force greater than the friction force generated between the first piston of the push unit and the inner circumferential surface of the cylinder, the load portion automatically pushes the push unit by the restoring force of the elastic member Wherein the needle is inserted into the cylinder together with the push unit so that the needle is inserted into the cylinder. 11. The method of claim 10,
The elastic member
The urging force of the pushing unit is less than the frictional force generated between the first piston of the pushing unit and the inner circumferential surface of the cylinder so that the user must move the pushing unit to the opposite side of the needle set unit after the fastening portion is cut by the cutting blade, And the rod is moved to the push unit side by the restoring force so that the needle is inserted into the cylinder. The method according to claim 1,
The push unit includes:
A fixed portion of the needle set unit inserted into the space portion of the cylinder so as to be slidably moved along the cylinder and moved toward the push unit by the restoring force of the elastic member when the needle set unit is disengaged by the push unit, A push rod provided with a needle storage hole to be inserted and stored;
A needle set which is provided at an end of a push rod inserted in the cylinder so as to close the needle storage hole and which is cut together with the fixed portion by a cutting edge of the needle set unit and is moved toward the push unit by the restoring force of the elastic member, A cutting surface for allowing the rod portion of the unit and the injection needle to be inserted into the needle storage hole of the push rod;
A pushing and releasing cap detachably coupled to an end of the push rod located outside the cylinder; And
And a first piston coupled to the push rod to seal between the push rod and the cylinder. 16. The method of claim 15,
The push unit includes:
Further comprising a plurality of protrusions protruding from an outer circumferential surface of the first piston so as to improve a sealing force between the push rod and the cylinder. 16. The method of claim 15,
The push unit includes:
And a second piston coupled to the cutting face to elastically deform the shape of the needle when the needle is brought into contact with the needle set unit so that the needle can be discharged through the needle set unit without leaving the injected liquid in the cylinder space. Disposable safety syringe. 18. The method of claim 17,
And the second piston includes:
Characterized in that the portion which is in contact with the needle set unit is convexly formed.

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