KR102354662B1 - Non-reusable disposable safety syringe - Google Patents

Abstract

When the injection of the injection is completed, a disposable safety syringe that cannot be reused that is not exposed to the outside by automatically inserting a contaminated injection needle into the cylinder is started. The non-reusable disposable safety syringe is provided with a space in which an injection solution can be injected and a cylinder provided with a needle set unit insertion unit, and the injection solution is slid along the cylinder to inject an injection into the space or inject an injection into the space. a push unit slidably fastened to the space to discharge the needle to the outside of the cylinder; The needle set unit fixed inside the cylinder so as to be elastically supported by may include

Description

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

The present invention relates to a disposable safety syringe that cannot be reused, and more specifically, it is not only impossible to reuse after being used once, but also reused to prevent safety accidents such as being stabbed by a user in the process of disposal after use. It is about an impossible disposable safety syringe.

In general, disposable syringes are universally used in all areas of treatment, such as collecting a patient's blood sample, administering drugs, and supplying fluids. it is to be done

In the case of such a disposable syringe, for safety reasons, after use, the cap should be coupled to the Luer-lock tip to prevent the needle from being exposed to the outside, and then the cap-coupled Luer-lock tip should be separated from the syringe and discarded.

However, the Luer-lock tip is sealed and tightly coupled to the syringe so that the drug discharged from the syringe is moved only with the injection needle. There is a problem that safety accidents such as secondary infection may occur because a user such as a hospital worker is pierced by a contaminated injection needle during use because only the cap is separated from the luer-lock tip and the injection needle is exposed.

Therefore, in recent years, the Luer-lock tip is not separated from the syringe, only the cap is separated from the Luer-lock tip. As the injection needle is exposed, a user is stabbed by a contaminated injection needle to prevent a safety accident, such as a secondary infection. An injection needle separator has been developed and is being used.

The injection needle separator is an equipment that separates and discards the injection needle from the syringe by a gripping means for gripping the injection needle and a driving means for rotating the gripping means, and after the user uses the syringe, put a cap on the needle A user's safety accident can be prevented by allowing the needle to be directly separated from the syringe without covering it, but there is a problem in that a separate installation space is required, and manufacturing and operating costs are additionally generated.

In addition, when the needle separator is installed and used, the medical worker using the syringe must manually perform the operation of separating the injection needle from the syringe after using the syringe. There is a problem in that the used syringe is frequently discarded without proceeding with the operation of separating the needle from the needle.

Republic of Korea Registered Utility Model No. 20-0336221 (2003.12.05.)

It is an object of the present invention to provide a disposable, non-reusable safety syringe that is not exposed to the outside by automatically inserting a contaminated injection needle into the cylinder when injection of the injection is completed.

Other detailed objects of the present invention will be clearly grasped and understood by experts or researchers in the technical field through the detailed contents described below.

The present invention devised to achieve the above object is a cylinder in which a space in which an injection solution can be injected is provided and a needle set unit insertion part is provided, and it is slidably moved along the cylinder to inject an injection into the space or to the space. A push unit slidably fastened to the space portion so as to discharge the injected injection solution to the outside of the cylinder, and the needle set unit insertion portion is inserted into the needle set insertion portion so that at least a portion of the injection needle protrudes out of the cylinder The needle is fixed inside the cylinder so as to be elastically supported by the elastic member, and is released when pressed over a predetermined pressure by the push unit sliding along the cylinder and moved toward the push unit by the restoring force of the elastic member. A non-reusable, single-use safety syringe containing a set unit is presented.

For example, the cylinder is provided with a space in which the injection solution is injected, and at least one fixing jaw for fixing the needle set unit on the inner circumferential surface of the cylinder is formed to protrude, and it extends from the body so as to communicate with the body. a needle set unit insertion portion formed and protruding from an inner circumferential surface of the needle set unit insertion portion into which the needle set unit is inserted so that at least a portion of the injection needle protrudes to the outside, and inserted between the needle set unit and the needle set unit insertion portion It may include a support jaw for supporting the elastic member.

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

In addition, the cylinder is formed to protrude from the inner circumferential surface of the main body portion may further include a separation preventing protrusion for preventing the push unit from being separated to the outside of the body portion when the first piston portion of the push unit is caught.

For example, the push unit may include a push rod inserted into the space of the cylinder to slide along the cylinder, and a first piston coupled to the push rod to seal between the push rod and the cylinder. can

In addition, the push unit may further include a plurality of protrusions formed to protrude from the outer peripheral surface of the first piston to improve the sealing force between the push rod and the cylinder.

In addition, the push unit is coupled to the end of the push rod inserted into the cylinder and is pressed while being elastically deformed in shape when in contact with the needle set unit through the needle set unit without leaving any injection solution in the cylinder space. It may further include a second piston to be discharged.

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

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

For example, the needle set unit is inserted into the needle set unit insertion portion so that a part protrudes into the space portion of the cylinder, and a rod portion provided with a needle insertion hole communicating with the outside and the space of the cylinder; An injection needle coupled to the needle insertion hole so that at least a part protrudes to the outside, an elastic member interposed between the needle set unit insertion part and the rod part to be supported by the support jaw of the needle set unit insertion part; A fixing part protruding from the outer peripheral surface of the rod part protruding into the space, supported by the elastic member, and provided with a fixing groove for being inserted and fixed to a fixing jaw protruding from the inner peripheral surface of the main body, and at least a part of the cylinder to protrude into the space When the fixing part is pressed over a predetermined pressure by the push unit that is interposed between the elastic member and the needle set unit insertion part and slides along the cylinder, the fixing part is cut to the push unit side by the restoring force of the elastic member. It may include a cutting blade that moves the rod so that the injection needle is inserted into the cylinder.

Here, the needle insertion hole is formed so that the portion communicating with the space portion gradually widens toward the space portion so that a portion of the second piston of the push unit is inserted and closely attached thereto, thereby improving sealing force.

In addition, the needle set unit reduces the thickness of the fixing part so that the fixing part can be more easily cut by the cutting blade and is inserted so that the cutting blade does not shake when the cutting blade cuts the fixing part It may further include a cutting groove provided in the fixing part.

Here, the elastic member has an elastic force greater than the frictional force generated between the first piston of the push unit and the inner circumferential surface of the cylinder so that when the fixed part is cut by the cutting blade, it is automatically loaded by the original restoring force of the elastic member Addition may be inserted into the cylinder together with the push unit while pushing the push unit so that the injection needle is inserted into the cylinder.

On the other hand, the elastic member has an elastic force equal to or less than the frictional force generated between the first piston of the push unit and the inner circumferential surface of the cylinder. Only when it is moved, the rod part is moved to the push unit side by the restoring force of the elastic member, so that the injection needle is inserted into the cylinder.

For another example, the push unit is inserted into the space of the cylinder to slide along the cylinder, and when the needle set unit is unfixed by the push unit, the needle set unit is moved toward the push unit by the restoring force of the elastic member. A push rod having a fixing part, a rod part, and a needle storage hole into which the needle is inserted and stored, and a push rod inserted into the cylinder to seal the needle storage hole, provided at the end of the needle set unit. A cutting surface through which the rod part of the needle set unit which is cut together with the fixing part by the cutting blade and moved toward the push unit by the restoring force of the elastic member and the injection needle is inserted into the needle storage hole of the push rod, and the outside of the cylinder It may include a cap that is combined with a pressure unit detachably coupled to the end of the push rod located in the , and a first piston coupled to the push rod to seal between the push rod and the cylinder.

In addition, the push unit may further include a plurality of protrusions formed to protrude from the outer peripheral surface of the first piston to improve the sealing force between the push rod and the cylinder.

In addition, the push unit is coupled to the cutting surface and is elastically deformed and pressed when in contact with the needle set unit, so that the injection liquid in the cylinder space can be discharged through the needle set unit without leaving a second piston. may further include.

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

As described above, in the disposable safety syringe that cannot be reused according to an embodiment of the present invention, when the user pushes the push unit to complete the injection of the injection solution in the cylinder into the patient and then removes the pressure applied to the push unit, the injection needle moves into the cylinder. As it is automatically inserted into the needle storage hole of the pushrod, the contaminated needle is not exposed to the outside of the syringe.

Therefore, there is no need for a user using a syringe, such as hospital workers, to manually separate and discard a contaminated injection needle after using the syringe, thereby greatly improving the convenience of use.

In addition, since the user does not have to remove the contaminated injection needle by hand after using the syringe, it is possible to fundamentally prevent safety accidents such as secondary infection caused by the user being stabbed by a contaminated injection needle while using the syringe. There are advantages.

On the other hand, from the point of view of the hospital, if a disposable safety syringe that cannot be reused according to an embodiment of the present invention is used, there is no need to install a separate injection needle separator to prevent safety accidents such as secondary infection, thereby adding additional cost to hospital operation. It has the advantage of fundamentally preventing safety accidents without cost input.

In addition, the disposable safety syringe that cannot be reused according to an embodiment of the present invention is automatically inserted into the cylinder or into the needle storage hole when injection of the injection solution is completed, so that it is not exposed to the outside, so that even during busy treatment hours, medical care is provided. There is an advantage that workers can safely dispose of contaminated syringes.

Therefore, even when the discarded syringes are collected by the disposal company and the needles are separated and discarded, there is an advantage that the contaminated syringes can be safely separated and discarded because the exposed syringes do not exist.

In addition, the disposable safety syringe that cannot be reused according to an embodiment of the present invention is a contaminated injection needle stored in a needle storage hole provided on the push rod by simply separating the cap coupled to the push rod. Since it can quickly and safely separate and collect the

Ultimately, the disposable safety syringe that cannot be reused according to an embodiment of the present invention can fundamentally prevent not only the secondary infection of medical workers due to the contaminated needle after use, but also the secondary infection of workers of medical supplies disposal companies. Therefore, it is possible to secure the safety of use and product reliability, as well as the convenience of the product by not exposing the contaminated needle to the outside without a separate disposal operation after use, and at the same time, there is no additional operating cost for the hospital, so customer satisfaction can be significantly improved.

Other effects of the present invention will be clearly understood and understood by an expert or researcher in the art through the specific details described below or during the course of carrying out the present invention.

1 is a cross-sectional view for explaining a disposable safety syringe that cannot be reused according to a first embodiment of the present invention;
Figure 2 is a detailed view of 'A' of Figure 1
3 is a cross-sectional view for explaining a disposable safety syringe that cannot be reused according to a second embodiment of the present invention
4 is a detailed view of 'B' of FIG. 3

Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

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

The terms used in the present application are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, and includes one or more other features or It should be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof does not preclude the possibility of addition.

Unless defined otherwise, all terms used herein, including technical and 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 should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

With reference to the drawings below, preferred embodiments of the present invention will be described in more detail.

<First embodiment>

1 is a cross-sectional view for explaining a disposable safety syringe that cannot be reused according to a first embodiment of the present invention, and FIG. 2 is a detailed view of 'A' of FIG. 1 .

1 and 2, the disposable safety syringe 100 that cannot be reused 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 portion 111a into which the injection solution can be injected. Meanwhile, a needle set unit insertion part 112 may be provided at one end of the cylinder 110 .

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

The body part 111 may be formed in the form of a hollow pipe so that a space part 111a into which the injection solution is injected can be provided, and the needle set unit ( At least one fixing jaw 111b for fixing 130 may be formed to protrude.

The needle set unit insertion part 112 is formed to extend from the body part 111 so as to communicate with the space part 111a of the body part 111, and the needle set so that at least a part of the needle 132 protrudes to the outside. The set unit 130 may be inserted therein.

Here, it is preferable that the needle set unit insertion part 112 is integrally formed with the body part 111 so that the inner peripheral surface has a smaller diameter than the diameter of the space part 111a.

The support jaw 113 is formed to protrude from one end of the inner circumferential surface of the needle set unit insertion unit 112 , and an elastic member 133 inserted between the needle set unit 130 and the needle set unit insertion unit 112 . to be able to support

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

The holding part 114 is the body part so that the user can easily press the push unit 120 after easily holding the non-reusable disposable safety syringe 100 according to the first embodiment of the present invention with one hand. (111) may be formed to protrude from the other end of the outer peripheral surface.

In addition to this, the cylinder 110 may further include a separation barrier 115 .

The separation protrusion 115 is formed to protrude from the other end of the inner circumferential surface of the main body 111 so that the first piston 122 of the push unit 120 is caught, so that the push unit 120 is connected to the main body 111 . ) to prevent it from escaping to the outside.

For example, the departure preventing protrusion 115 is tapered so as to gradually narrow in diameter by a predetermined distance from the other end of the main body 111 to one end of the body part 111, so that the push unit 120 is attached to the body part ( 111) can be inserted into the space 111a, but when the push unit 120 inserted into the space 111a of the main body 111 is taken out to the outside of the main body 111, the push unit 120 ) is caught by the first piston part 122 of the body part 111 and is pressed by the push unit 120 to prevent the push unit 120 from being separated, so that the needle set unit 130 is unfixed, thereby an elastic member. Even if the needle set unit 130 is moved toward the push unit 120 by the original restoring force of 133, the push unit 120 prevents the separation of the cylinder 110 outside the needle set unit 130. By preventing the cylinder 110 from being exposed to the outside, it is possible to fundamentally prevent safety accidents such as being stabbed by a contaminated injection needle.

The push unit 120 slides along the cylinder 110 to inject the injection solution into the space 111a or to discharge the injection solution injected into the space 111a to the outside of the cylinder 110. It may be slidably fastened to (111a).

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 to slide 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 seal 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 peripheral surface of the first piston 122 to improve 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 a coupling groove 125 provided on one side of the push rod 121 inserted into the cylinder 110 to elastically change its shape when in contact with the needle set unit 130 . By being deformed and pressurized, the injection liquid in the space portion 111a of the cylinder 110 can be discharged through the needle set unit 130 without leaving any residue.

For example, the second piston 124 is in closer contact with the other side of the needle insertion hole 131a to be described later of the needle set unit 130 so that the injection needle 132 in the space portion 111a is not left behind. ), it is preferable that the portion in contact with the needle insertion hole (131a) is formed to be convex so that it can be discharged through.

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

The pressing part 126 allows the user to easily press the push rod 121 with a finger after holding the non-reusable disposable safety syringe 100 according to the first embodiment of the present invention with one hand. It 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 part 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 part 112 so 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 part 112. It is fixed inside the cylinder 110 so as to be elastically supported by the elastic member 122, and is released when pressed to a predetermined pressure or more by the push unit 120 sliding along the cylinder 110 to release the elastic member ( 133) so that it can be moved toward the push unit 120 by the original restoring force.

As described above, the disposable safety syringe 100 that cannot be reused according to the first embodiment of the present invention is applied to the cylinder 110 when the needle set unit 130 is pressed by the push unit 120 above a predetermined pressure. The fixed needle set unit 130 is released and moved to the push unit 120 side by the restoring force of the elastic member 133 , and the injection needle 132 is inserted into the cylinder 110 .

That is, the disposable safety syringe 100 that cannot be reused according to the first embodiment of the present invention is a needle set unit 130 by the push unit 120 when the user presses the push unit 120 to complete injection of the injection solution. ) is pressed, the needle set unit 130 is released, and the needle set unit 130 is moved to the push unit 120 side by the restoring force of the elastic member 133 to insert the injection needle into the cylinder 110 . By doing so, it is possible to fundamentally prevent safety accidents, such as a user being stabbed by a contaminated injection needle 132 and a secondary infection occurs.

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

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

Here, the needle insertion hole 131a is formed such that the portion communicating with the space portion 111a gradually widens toward the space portion 111a, so that a portion of the second piston 124 of the push unit 120 is By further improving the sealing force while being inserted into close contact, the injection solution in the space portion 111a can be sequentially discharged through the needle insertion hole 131a and the injection needle 132 without leaving any residue.

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

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

Here, it is preferable to use a coil spring 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 .

In this way, when 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 peripheral surface of the cylinder 110 is used, the cutting blade 135 ) when the fixing part 134 is cut by the cylinder 110 together with the push unit 120 while the rod part 131 automatically pushes the push unit 120 by the restoring force of the elastic member 133 to its original state. It is inserted inside so that the injection needle 132 can be automatically inserted into the cylinder 110 .

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

In this way, when the elastic member 133 having an elastic force equal to or less 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 cutting blade 135 ), even if the fixing part 134 is cut by the rod part 131 is not moved to the push unit 120 side by the restoring force of the elastic member 133 to its original state, and the user manually inserts the push unit 120 into the needle set unit. (130) Only when it is moved to the opposite side, the rod part 131 is moved to the push unit 120 side by the original restoring force of the elastic member 133 so that the injection needle 132 can be inserted into the cylinder 110.

That is, when the place of use wants the injection needle 132 to be automatically inserted into the cylinder 110, the first piston 122 of the push unit 120 and the inner peripheral surface of the cylinder 110 are generated between the It is possible to select and apply the elastic member 133 having an elastic force exceeding the frictional force, and if it is desired to manually insert the injection needle 132 into the cylinder 110 at the place of use, the first of the push unit 120 1 An elastic member 133 having an elastic force exceeding the frictional force generated between the piston 122 and the inner circumferential surface of the cylinder 110 may be selected and applied.

The fixing part 134 is formed to protrude from the outer peripheral surface of the rod part 131 protruding into the space 111a of the cylinder 110 and may be supported by the elastic member 133 , and the fixing part ( A fixing groove 134a which is inserted and fixed to the fixing jaw 111b protruding from the inner circumferential surface of the main body 111 may be provided on the outer peripheral surface of the 134 .

The cutting blade 135 is interposed between the elastic member 133 and the needle set unit insertion part 112 so that at least a part protrudes into the space 111a of the cylinder 110 to follow the cylinder 110 . When the fixing part 134 is pressed over a predetermined pressure by the sliding-moving push unit 120 , the fixing part 134 is cut to the push unit 120 side by the restoring force of the elastic member 133 . The rod part 131 is moved so that the injection needle 134 is inserted into the cylinder 110 .

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

The cutting groove 136 is provided in the fixing part 134 to reduce the thickness of the fixing part 134 so that the fixing part 134 can be more easily cut by the cutting blade 135, When the cutting blade 135 cuts the fixed part 134, the cutting blade 135 is inserted so that the fixed part can be cut more stably in a more firmly fixed state without shaking.

Again, an operation process of the disposable safety syringe 100 that cannot be reused according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2 .

1 and 2, in order to inject an injection solution using the disposable safety syringe 100 that cannot be reused according to the first embodiment of the present invention, first insert the injection needle 132 into the injection bottle and then push The unit 120 is pulled out of the cylinder 110 to inject the desired amount of injection into the cylinder 110 space portion 111a.

As described above, when a desired amount of injection solution is injected into the cylinder 110 space 111a, the injection needle 132 is inserted into the patient's injection site, and then the push unit 120 is moved toward the needle set unit 130 side. The injection solution injected into the space 111a of the cylinder 110 is sequentially injected into the injection site of the patient through the needle insertion hole 131a of the needle set unit 130 and the injection needle 132 .

As described above, when the push unit 120 is moved toward the needle set unit 130 and the second piston 122 of the push unit 120 is in close contact with the needle insertion hole 131a of the rod 131, the injection of the injection is performed. When the second piston 124 is in close contact with the needle insertion hole 131a of the rod part 131, the push unit 120 is further pressed toward the needle set unit 130 by a predetermined pressure or more. The fixing part 134 fixed to the cylinder 110 is pressed and cut by the cutting blade 135 .

Here, since the fixing part 134 of the needle set unit 130 is supported by the elastic member 133 , when the cutting groove part 136 is cut by the cutting blade 135 , the elastic member 133 It is moved to the push unit 120 side together with the rod part 131 and the injection needle 132 by the original restoring force.

At this time, 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 peripheral surface of the cylinder 110, the original restoring force of the elastic member 133 is The push unit 120 is automatically pushed to the opposite side of the needle set unit 130 by the fixing unit 134 moved to the push unit 120 side by the fixing unit 134, the rod unit 131, and the injection needle. 132 is automatically inserted into the cylinder 110 and is not exposed to the outside of the cylinder 110 .

On the other hand, when the elastic force of the elastic member 133 is equal to or less 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 elastic member 133 is returned to its original shape. When the fixing part 134 moved toward the push unit 120 by the restoring force comes into contact with the push unit 120 , it is no longer moved to the opposite side of the needle set unit 130 and stops. At this time, when the user slides the push unit 120 to the opposite side of the needle set unit 130 , the fixing part 134 , the rod part 131 , and the injection needle 132 are in the original shape 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 .

<Second embodiment>

3 is a cross-sectional view for explaining a disposable safety syringe that cannot be reused according to a second embodiment of the present invention, and FIG. 4 is a detailed view of 'B' of FIG. 3 .

The disposable safety syringe 100 that cannot be reused according to this embodiment is the same as the disposable safety syringe 100 that cannot be reused according to the first embodiment except for the push unit 120 . Accordingly, the same or similar components as those of the first embodiment are denoted by the same reference numerals, and detailed descriptions of the remaining components except for the push unit 120 will be 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 combined cap 128 , and a first piston 122 . may include

The push rod 121 is inserted into the space 111a of the cylinder 110 so as to slide along the cylinder 110 and is an elastic member when the needle set unit 130 is unfixed by the push unit 120 . The fixing part of the needle set unit 130 moved toward the push unit 120 by the restoring force of 133, the rod part 131, and the needle storage hole 121a in which the injection needle 132 is inserted and stored are provided. can be

The cutting surface 127 is provided at the end of the push rod 121 inserted into the cylinder 110 to seal the needle storage hole 121a and the cutting blade 135 of the needle set unit 130 . The rod part 131 and the injection needle 132 of the needle set unit 130 that are cut together with the fixing part 134 and moved toward the push unit 120 by the restoring force of the elastic member 133 by the push It is inserted into the needle storage hole (121a) of the rod (121).

The pressure unit combined cap 128 is detachably coupled to the end of the push rod 121 located on the outside of the cylinder 110 so that the user can easily press the push rod 121 as well as use it. When disposing of the completed syringe, it is separated from the push rod 121 so that the injection needle 132 stored in the needle storage hole 121a of the push rod 121 is safely taken out, separated and disposed of separately.

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

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

It is preferable that the plurality of protrusions 123 protrude from the outer peripheral surface of the first piston 122 to improve 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 pressed while being elastically deformed when in contact with the needle set unit 130, so that the injection liquid in the space 111a of the cylinder 110 is not left behind. to be discharged through the needle set unit 130 .

Here, it is preferable that the second piston 124 has a convex portion in contact with the needle set unit 130 .

Again, an operation process of the disposable safety syringe 100 that cannot be reused according to the second embodiment of the present invention will be described with reference to FIGS. 3 and 4 .

3 and 4, in order to inject an injection solution using the non-reusable disposable safety syringe 100 according to the second embodiment of the present invention, first insert the needle into the injection vial and then the push unit 120 ) to the outside of the cylinder 110 to inject the desired amount of injection into the cylinder 110 space portion (111a).

As described above, when a desired amount of injection solution is injected into the cylinder 110 space 111a, the injection needle 132 is inserted into the patient's injection site, and then the push unit 120 is moved toward the needle set unit 130 side. The injection solution injected into the space 111a of the cylinder 110 is sequentially injected into the injection site of the patient through the needle insertion hole 131a of the needle set unit 130 and the injection needle 132 .

As described above, when the push unit 120 is moved toward the needle set unit 130 and the second piston 124 of the push unit 120 is in close contact with the needle insertion hole 131a of the rod part 131, the injection solution is injected. When this is completed, in a state in which the second piston 124 is in close contact with the needle insertion hole 131a of the rod part 131, the push unit 120 is further pressed toward the needle set unit 130 by a predetermined pressure or more. When the cutting surface 127 of the fixing part 134 fixed to the cylinder 110 and the push unit 120 is pressed, it is cut by the cutting blade 135 .

Here, since the fixing part 134 of the needle set unit 130 is supported by the elastic member 133 , when the cutting groove part 136 is cut by the cutting blade 135 , the elastic member 133 It is moved to the side of the push unit 120 together with the cutting surface 127, the rod part 131 and the injection needle 132 by the original restoring force.

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

On the other hand, in the case of the disposable safety syringe 100 that cannot be reused according to the second embodiment of the present invention, when the used syringe is disposed of by detachably coupling the pressure unit and cap 128 to the push rod 121, the It is separated from the push rod 121 to safely take out the injection needle 132 stored in the needle storage hole 121a of the push rod 121 to separate it and dispose of it.

As described above, in the disposable safety syringe 100 that cannot be reused according to an embodiment of the present invention, the user pushes the push unit 120 to inject the injection solution in the cylinder 110 into the patient, and then to the push unit 120 . When the applied pressing force is removed, 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, since there is no need for a user using a syringe, such as hospital workers, to manually separate and discard the contaminated injection needle 132 after using the syringe, the convenience of use can be greatly improved.

In addition, since the user does not need to remove the contaminated injection needle 132 by hand after using the syringe, the user is stabbed by the contaminated injection needle 132 while using the syringe, thereby preventing safety accidents such as secondary infection. can be prevented in the first place.

On the other hand, from the hospital side, if the disposable safety syringe 100 that cannot be reused according to an embodiment of the present invention is used, there is no need to install a separate injection needle separator in order to prevent safety accidents such as secondary infection. It is possible to fundamentally prevent safety accidents without additional cost input for operation.

In addition, in the disposable safety syringe 100 that cannot be reused according to an embodiment of the present invention, when the injection is completed, the contaminated injection needle 132 is automatically inserted into the cylinder 110 or the needle storage hole 121a. As it is not exposed to the outside, medical workers can safely dispose of contaminated syringes even during busy treatment hours.

Therefore, even when the discarded syringe is collected by the disposal company and the injection needle 132 is separated and discarded, the syringe with the contaminated injection needle 132 does not exist, so that the contaminated syringe can be safely separated and discarded. do.

In addition, the disposable safety syringe 100 that cannot be reused according to an embodiment of the present invention is attached to the pushrod 121 by simply separating the cap 128 coupled to the pushro 121 . Since it is possible to quickly and safely separate and collect the contaminated injection needles 132 stored in the provided needle storage hole 121a, it is possible to significantly shorten the number of separate collection and disposal of the contaminated syringes.

In the foregoing detailed description of the present invention, although it has been described with reference to preferred embodiments of the present invention, those skilled in the art or those having ordinary knowledge in the technical field will be described later in the claims of the present invention And it will be understood that various modifications and variations of the present invention can be made without departing from the technical scope.

110; cylinder 120 ; push unit
130; needle set unit

Claims (1)

a cylinder provided with a space into which the injection solution can be injected and provided with a needle set unit insertion unit; a push unit that is slidably moved along the cylinder to inject an injection into the space or to be slidably fastened to the space so that the injection liquid injected into the space can be discharged to the outside of the cylinder; And it is inserted into the needle set unit insertion portion so that at least a part of the injection needle protrudes out of the cylinder, is fixed inside the cylinder to be elastically supported by the elastic member inserted into the needle set unit insertion portion, and slides along the cylinder and a needle set unit that is released when the pressure is higher than a predetermined pressure by the moving push unit and is moved toward the push unit by the restoring force of the elastic member,
The cylinder is
a body part provided with a space in which the injection solution is injected and having at least one fixing jaw protruding to fix the needle set unit to an inner circumferential surface; a needle set unit insertion part extending from the body part to communicate with the body part and into which the needle set unit is inserted so that at least a part of the injection needle protrudes to the outside; and a support jaw protruding from the inner circumferential surface of the needle set unit insertion part to support the elastic member inserted between the needle set unit and the needle set unit insertion part,
The push unit is
a push rod inserted into the space of the cylinder to slide along the cylinder; and a first piston coupled to the push rod to seal between the push rod and the cylinder. Non-reusable disposable safety syringe.

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