KR102124379B1 - Non-reusable disposable safety syringe - Google Patents

Abstract

When the injection of the injection solution is completed, a non-reusable disposable safety syringe is disclosed in which an automatically contaminated injection needle is inserted into the cylinder and is not exposed to the outside. The non-reusable disposable safety syringe is provided with a space portion through which the injection liquid can be injected, and a cylinder provided with a needle set unit insertion portion, and slidingly moved along the cylinder to inject the injection liquid into the space portion or injection liquid injected into the space portion The push unit slidingly coupled to the space portion to discharge the cylinder out of the cylinder, and an elastic member inserted into the needle set unit insertion portion and inserted into the needle set insertion portion to protrude at least a portion of the injection needle out of the cylinder The needle set unit fixed to the inside of the cylinder so as to be elastically supported by the push unit sliding along the cylinder and being pushed to a predetermined pressure or higher is released and moved to the push unit side by the original restoring force of the elastic member. It can contain.

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 reusable after use once, but also reused to prevent a safety accident such as a user being stabbed in the injection needle during disposal after use. It is related to an impossible disposable safety syringe.

In general, disposable syringes are universally used in all fields of treatment, such as blood sample collection, drug administration, and fluid supply of patients, and these disposable syringes are prohibited from reuse to prevent secondary infection, and once used syringes are discarded. It is supposed to.

In the case of such a disposable syringe, after use, for safety, the cap should be attached to the luer lock tip so that the injection needle is not exposed to the outside, and the luer lock tip with the cap coupled from the syringe must be removed and discarded.

However, the luer lock tip is tightly coupled with the syringe so that the medicine discharged from the syringe is moved only to the injection needle, so that when the hospital practitioner separates it by hand after use, the luer lock tip with the injection needle coupled from the syringe is removed. There is a problem in that a safety accident such as a secondary infection may be caused by a user, such as a hospital worker, being stabbed by a contaminated injection needle during use because 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, but only the cap is separated from the luer lock tip to prevent the occurrence of safety accidents such as secondary infection caused by the user being stabbed by a contaminated injection needle as the injection needle is exposed. Injection needle separators have been developed and used.

The injection needle separator is a device for separating and disposing 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 the user caps the injection needle after using the syringe. Although it is possible to prevent the user's safety accident by allowing the injection needle to be separated from the syringe directly without putting on, there is a problem in that a separate installation space is required and additional manufacturing and operation costs are incurred.

In addition, when the needle needle separator is installed and used, the operation of separating the injection needle from the syringe after using the syringe must be additionally manually performed by a medical worker using a syringe, but in a busy medical treatment period, the medical worker uses a syringe and then uses the syringe There is a problem that frequently occurs when the used syringe is discarded without proceeding to remove the needle from the needle.

Republic of Korea Utility Model No. 20-0336221 (Dec. 05, 2003)

An object of the present invention is to provide a non-reusable disposable safety syringe that is automatically exposed to a contaminated injection needle when the injection of the injection solution is completed and is not exposed to the outside.

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

The present invention devised to achieve the above object is provided with a space portion into which the injection liquid can be injected, and a cylinder provided with a needle set unit insertion portion, and slidingly moved along the cylinder to inject the injection liquid into the space or to the space portion The push unit is slidably fastened to the space portion so as to discharge the injected injection liquid out of the cylinder, and is inserted into the needle set unit insertion portion so that at least a part of the injection needle protrudes out of the cylinder and is inserted into the needle set insertion portion. The needle is fixed to the inside of the cylinder so as to be elastically supported by the elastic member, and is released when the pressure is pushed above a predetermined pressure by a push unit sliding along the cylinder and moved toward the push unit by the original restoring force of the elastic member. A reusable disposable safety syringe including a set unit is presented.

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

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

In addition to this, the cylinder may be further protruded on the inner circumferential surface of the main body portion to further include a release preventing jaw to prevent the push unit from escaping to the outside of the main body portion by engaging the first piston portion of the push unit.

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

In addition, the push unit may further include a plurality of protrusions protruding from the outer circumferential surface of the first piston so as to improve the sealing force between the push rod and the cylinder.

In addition to this, the push unit is coupled to the end of the push rod inserted into the cylinder and is pressed while being elastically deformed upon contact with the needle set unit, so that the injection solution of the cylinder space is left through the needle set unit. It may further include a second piston to be discharged.

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

Meanwhile, the push unit may further include a pressing portion 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 as to protrude partly into the space portion of the cylinder and a rod portion provided with a needle insertion hole communicating with the outside and the space portion of the cylinder, and of the cylinder The injection needle coupled to the needle insertion hole so that at least a portion protrudes outward, and an elastic member interposed between the needle set unit insertion portion and the rod portion to be supported by a support jaw of the needle set unit insertion portion, and the cylinder. The fixing part is provided with a fixing groove which is formed to protrude on the outer circumferential surface of the rod part protruding into the space part and supported by the elastic member and inserted into a fixing chin protruding on the inner circumferential surface of the main body part, and at least a part of the cylinder to protrude. When the fixing part is pressed above a predetermined pressure by a push unit that is interposed between the elastic member and the needle set unit insert and slides along the cylinder, the fixing part is cut to the push unit side by the original restoring force of the elastic member. It may include a cutting blade to move the rod portion so that the injection needle is inserted into the cylinder.

Here, the needle insertion hole is formed so that the portion in communication with the space portion gradually widens toward the space portion, so that a part of the second piston of the push unit is inserted into close contact, thereby improving sealing force.

In addition, the needle set unit reduces the thickness of the fixing portion 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, the cutting blade is inserted so as not to be shaken. The cutting groove provided in the fixing part may be further included.

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, and when the fixing part is cut by the cutting blade, it is automatically loaded by the original restoring force of the elastic member. The addition can be inserted into the cylinder 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 peripheral surface of the cylinder, and after the fixing part is cut by the cutting blade, the user moves the push unit to the opposite side of the needle set unit. Only by moving, the rod portion may be moved toward the push unit by the original 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 portion of the cylinder so as to slide along the cylinder, and the needle set unit is moved toward the push unit by the original restoring force of the elastic member when the needle set unit is released by the push unit. Of the needle set unit provided at the end of the push rod inserted into the cylinder to close the needle storage hole, and the push rod provided with the fixed portion, the rod portion and the needle storage hole where the injection needle is inserted and stored. A cutting surface to be inserted into the needle storage hole of the needle set unit and the injection needle of the needle set unit which is cut together with the fixing part by a cutting blade and moved toward the push unit by the original restoring force of the elastic member, and the outside of the cylinder It may also include a pressing portion combined cap that is detachably coupled to the end of the push rod located at, and a first piston coupled to the push rod so as to seal between the push rod and the cylinder.

In addition, the push unit may further include a plurality of protrusions protruding from the outer circumferential surface of the first piston so as to improve the sealing force between the push rod and the cylinder.

In addition to this, the push unit is coupled to the cutting surface and is elastically deformed upon contact with the needle set unit, so that it is pressurized to be discharged through the needle set unit without leaving the injection fluid in the cylinder space. It may further include.

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

As described above, the disposable safety syringe, which cannot be reused according to an embodiment of the present invention, simply removes the pressing force applied to the push unit after the user pushes the push unit to complete injection of the injection liquid into the patient, and then the injection needle is inserted into the cylinder. B By automatically inserting into the needle storage hole of the push rod, the contaminated injection needle is not exposed outside the syringe.

Therefore, there is an advantage that a user who uses a syringe, such as hospital workers, does not need to manually separate and dispose of a contaminated injection needle after using the syringe, thereby greatly improving ease of use.

In addition, since the user does not have to remove the contaminated needle by hand after using the syringe, the user can fundamentally prevent a safety accident such as a secondary infection caused by being stuck in a contaminated needle while using the syringe. There are advantages.

On the other hand, when the hospital side uses a non-reusable disposable safety syringe according to an embodiment of the present invention, it is not necessary to install a separate injection needle separator to prevent a safety accident such as secondary infection, and thus is added to the hospital operation. There is an advantage that it is possible to prevent safety accidents without cost input.

In addition, the disposable safety syringe that cannot be reused according to an embodiment of the present invention is prevented from being exposed to the inside by inserting it into a cylinder or a needle storage hole automatically when the injection of the injection solution is completed, so it is medical even during busy medical hours. It has the advantage that practitioners can safely dispose of contaminated syringes.

Therefore, even when the discarded syringe is collected by the waste disposal company and the needle is separated and disposed of, the contaminated syringe can be safely separated and disposed of by disposing of the syringe with the exposed needle.

In addition, the non-reusable disposable safety syringe according to an embodiment of the present invention simply removes the cap combined with the pressing portion coupled to the push rod, and the contaminated injection needle stored in the needle storage hole provided in the push rod. Since it can be quickly and safely separated and collected, it has the advantage of significantly reducing the separation and disposal of contaminated syringes.

Ultimately, a non-reusable disposable safety syringe according to an embodiment of the present invention can fundamentally prevent not only secondary infection of medical workers due to contaminated injection needles but also secondary infection of medical product disposal companies after use. Therefore, it can not only secure the safety of use and product reliability, but also ensures the convenience of the product by not exposing the contaminated needle to the outside without separate disposal after use. There is an effect that can be greatly improved.

Other effects of the present invention will be clearly understood and understood by experts or researchers in this technical field through specific contents described below or during the process of carrying out the present invention.

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

The present invention can be applied to various changes and may have various forms, and 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 a specific disclosure 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 and second 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 other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may also be referred to as a first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, or that one or more other features or It should be understood that the existence or addition possibilities of numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains.

Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

<First Example>

1 is a cross-sectional view for explaining a disposable safety syringe that cannot be reused according to the 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 through which injection liquid can be injected. On the other hand, a needle set unit insertion portion 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 portion 111 may be formed in a hollow pipe shape so that a space portion 111a into which the injection liquid is injected may be provided, and the needle set unit ( At least one fixing jaw 111b fixing the 130) may be protruded.

The needle set unit insertion portion 112 is formed extending from the body portion 111 to communicate with the space portion 111a of the body portion 111 and the needle so that at least a portion of the injection needle 132 protrudes to the outside. The set unit 130 can be inserted therein.

Here, the needle set unit insertion portion 112 is preferably formed integrally with the body portion 111 so that the inner peripheral surface has a diameter smaller than the diameter of the space portion (111a).

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

Meanwhile, the cylinder 110 may further include a grip portion 114.

The gripping portion 114 allows the user to easily grip the disposable safety syringe 100 that cannot be reused according to the first embodiment of the present invention with one hand, and then press the push unit 120 easily. The outer peripheral surface of (111) may be formed to protrude to the other end.

In addition to this, the cylinder 110 may further include a departure preventing jaw 115.

The release preventing jaw 115 is formed to protrude to the other end of the inner circumferential surface of the body portion 111 so that the first piston portion 122 of the push unit 120 is caught, so that the push unit 120 is the body portion 111 ) To prevent it from escaping to the outside.

For example, the departure preventing jaw 115 is tapered to gradually decrease in diameter by a predetermined distance from the other end of the main body 111 toward the one end, so that the push unit 120 is installed in the main body ( 111) can be inserted into the space 111a, but when the push unit 120 inserted into the space 111a of the body 111 is taken out of the body 111, the push unit 120 ) By being caught by the first piston portion 122 so that the push unit 120 is not detached from the main body portion 111 so that it is pressed by the push unit 120 and the needle set unit 130 is released and thus the elastic member Even if the needle set unit 130 is moved toward the push unit 120 by the original restoring force of (133), the needle set unit 130 is prevented by preventing the push unit 120 from falling out of the cylinder 110. By preventing the phenomenon of being exposed by being detached from the outside of the cylinder 110, it is possible to fundamentally prevent a safety accident such as being stuck in a contaminated injection needle.

The push unit 120 is slidably moved along the cylinder 110 to inject an injection solution into the space 111a or to discharge the injection solution injected into the space 111a out of the cylinder 110. It may be slidingly coupled 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 portion 111a of the cylinder 110 so as 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 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 be formed to protrude on the outer circumferential surface of the first piston 122 so as to improve the 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 the coupling groove 125 provided on one side of the push rod 121 inserted in the cylinder 110 and elastically forms when contacted with the needle set unit 130. By being pressed while being deformed, the injection liquid of the space portion 111a of the cylinder 110 can be discharged through the needle set unit 130 without being left behind.

For example, the second piston 124 is in close contact 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 fluid in the space 111a is left without an injection needle 132 It is preferable that the portion in contact with the needle insertion hole (131a) to be discharged through the convex.

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

The pressing unit 126 is to allow the user to easily press the push rod 121 with a finger after gripping the disposable safety syringe 100 that cannot be reused 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, 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 an end portion of the push rod 121 in a circular or oval shape.

The needle set unit 130 is inserted into the needle set unit insert 112 so that at least a portion of the injection needle 132 protrudes out of the cylinder 110 and is inserted into the needle set unit insert 112. It is fixed inside the cylinder 110 so as to be elastically supported by the elastic member 122, and when the pressure is pushed above a predetermined pressure by the push unit 120 slidingly moving along the cylinder 110, the elastic member is released. It can be moved to the push unit 120 side by the original restoring force of 133).

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 a push unit 120 to a predetermined pressure or higher. The fixed needle set unit 130 is unlocked and moved to the push unit 120 side by the original restoring force of the elastic member 133 so that 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, when the user presses the push unit 120 to complete injection of the injection liquid, the needle set unit 130 is provided by the push unit 120. ) Is pressed and the needle set unit 130 is fixed and the needle set unit 130 is moved toward the push unit 120 by the original restoring force of the elastic member 133 so that the injection needle is inserted into the cylinder 110. By doing so, the user can be basically prevented from a safety accident such as the occurrence of a secondary infection by being stuck in a contaminated injection needle 132.

For example, the needle set unit 130 may include a rod portion 131, an injection 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 portion protrudes into the space portion 111a of the cylinder 110 and communicates with the outer and space portions 111a of the cylinder 110. Needle insertion hole (131a) can be provided.

Here, the needle insertion hole (131a) is formed so that the portion communicating with the space portion (111a) is gradually widened toward the space portion (111a) part of the second piston 124 of the push unit 120 As it is inserted, the sealing force is further improved so that the injection liquid in the space 111a can be sequentially discharged through the needle insertion hole 131a and the injection needle 132 without leaving the injection liquid.

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

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

Here, it is preferable to use a coil spring as the elastic member 133.

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

As described above, 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 circumferential surface of the cylinder 110 is used, the cutting blade 135 When the fixing part 134 is cut by ), the rod part 131 automatically pushes the push unit 120 by the original restoring force of the elastic member 133 and the cylinder 110 together with the push unit 120. It is inserted into the injection needle 132 to 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.

As described above, 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 original restoring force of the elastic member 133, and the user manually sets the push unit 120 to the needle set unit. 130, the rod 131 is moved to the push unit 120 side by the original restoring force of the elastic member 133 to be moved to the opposite side so that the injection needle 132 can be inserted into the cylinder 110.

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

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

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

In addition, the needle set unit 130 may further include a cutting groove (136).

The cutting groove 136 is provided in the fixing portion 134, and at the same time, reducing 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 blade 135 cuts the fixing portion 134, the cutting blade 135 is inserted so that the fixing portion can be more stably cut in a more firmly fixed state without being shaken.

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

1 and 2, in order to inject the injection liquid using the disposable safety syringe 100 that is not reusable according to the first embodiment of the present invention, first insert the injection needle 132 into the injection vial and then push The unit 120 is pulled out of the cylinder 110 to inject the desired amount of the injection liquid into the cylinder 110 space 111a.

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

When the second piston 122 of the push unit 120 is in close contact with the needle insertion hole 131a of the rod 131 by moving the push unit 120 toward the needle set unit 130 as described above, injection of the injection solution is performed. When the second piston 124 is completed and the second push unit 120 is pressed against the needle insertion hole 131a of the rod part 131 to the needle set unit 130 side, the pressure is further pushed to a predetermined pressure or higher. 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 136 is cut by the cutting blade 135, the elastic member 133 The rod unit 131 and the injection needle 132 are moved to the push unit 120 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 circumferential surface of the cylinder 110, the elastic force of the elastic member 133 is restored. The push unit 120 is automatically pushed to the opposite side of the needle set unit 130 by the fixing unit 134 which is 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 is not exposed outside the cylinder 110.

On the other hand, if 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 peripheral surface of the cylinder 110, the original shape of the elastic member 133 When the fixing part 134 moved to the push unit 120 side by the restoring force contacts the push unit 120, it is no longer moved to the opposite side of the needle set unit 130 but stops. At this time, when the user slidingly moves 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 the original shape of the elastic member 133 It is inserted into the cylinder 110 by the restoring force so that it is not exposed outside the cylinder 110.

<Second Example>

3 is a cross-sectional view for explaining a disposable safety syringe that cannot be reused according to the 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 the present 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. Therefore, the same or similar components as the first embodiment are denoted by the same reference numerals, and detailed descriptions of the remaining components except for the push unit 120 are 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. It can contain.

The push rod 121 is inserted into the space portion 111a of the cylinder 110 so as to slide along the cylinder 110 and elastic member when the needle set unit 130 is fixed and released by the push unit 120 A needle storage hole 121a is provided in which the fixed part, the rod part 131, and the injection needle 132 of the needle set unit 130, which are moved toward the push unit 120 by the original restoring force of 133, are inserted and stored. 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 is provided. The rod portion 131 and the injection needle 132 of the needle set unit 130 which are cut together with the fixing portion 134 and moved to the push unit 120 by the original restoring force of the elastic member 133 are pushed to the push portion. To be inserted into the needle storage hole (121a) of the rod (121).

The pressing portion combined cap 128 is detachably coupled to the end of the push rod 121 located outside the cylinder 110 so that the user can easily press the push rod 121 as well as use When disposing of the completed syringe, the injection needle 132 stored in the needle storage hole 121a of the push rod 121 is safely taken out 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 seal the gap between the push rod 121 and the cylinder 110.

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

The plurality of protrusions 123 are preferably formed to protrude on the outer circumferential surface of the first piston 122 so as to improve the 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 upon contact with the needle set unit 130, without leaving the injection liquid of the space portion 111a of the cylinder 110. 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, with reference to Figures 3 and 4 will be described with respect to the operation process of the disposable safety syringe 100 that can not be reused according to the second embodiment of the present invention.

3 and 4, in order to inject the injection liquid using the disposable safety syringe 100 that is not reusable according to the second embodiment of the present invention, first insert the injection needle into the injection vial and then push unit 120 ) Is pulled out of the cylinder 110 to inject the desired amount of injection liquid into the space portion 111a of the cylinder 110.

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

When the second piston 124 of the push unit 120 is in close contact with the needle insertion hole 131a of the rod unit 131 by moving the push unit 120 toward the needle set unit 130 as described above, injection of the injection liquid When this is completed, and 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 to the needle set unit 130 side by a predetermined pressure or more. When the fixing part 134 fixed to the cylinder 110 and the cutting surface 127 of the push unit 120 are pressed, they are 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 136 is cut by the cutting blade 135, the elastic member 133 The cutting surface 127, the rod portion 131 and the injection needle 132 are moved to the side of the push unit 120 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 surface of the first piston 122 and the cylinder 110 of the push unit 120 When the cutting groove 136 of the cutting surface 127 and the fixing part 134 is cut by the cutting blade 135 by applying the elastic member 133 having an elastic force greater than the friction force generated between the and the elastic The fixing part 134 is pushed toward the needle storage hole 121a of the push rod 121 by the original restoring force of the member 133, and the cutting surface 127 and the fixing part 134 are inserted into the needle storage hole 121a, 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.

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 pressure-combined cap 128 is detachably coupled to the push rod 121, the used syringe is discarded. Separated from the push rod 121, the injection needle 132 stored in the needle storage hole 121a of the push rod 121 is safely taken out to be separated and disposed of separately.

As described above, the disposable safety syringe 100 that cannot be reused according to an embodiment of the present invention is pushed to the push unit 120 after the user pushes the push unit 120 to complete injection of the injection liquid in the cylinder 110 into the patient. If only the applied pressure 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 outside the syringe. do.

Therefore, since a user who uses a syringe such as hospital workers does not need to separate and dispose of the contaminated injection needle 132 by hand after using the syringe, convenience in use can be greatly improved.

In addition, since the user does not have to remove the contaminated injection needle 132 by hand after using the syringe, the user is prevented from a safety accident such as a secondary infection caused by being stuck by the contaminated injection needle 132 while using the syringe. It can be prevented at the source.

On the other hand, when the hospital side uses the non-reusable disposable safety syringe 100 according to an embodiment of the present invention, it is not necessary to install a separate injection needle separator to prevent a safety accident such as secondary infection. It is possible to fundamentally prevent safety accidents without incurring additional cost to the operation.

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

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

In addition, the disposable safety syringe 100 that cannot be reused according to an embodiment of the present invention is simply detached from the pressing portion combined cap 128 coupled to the push furnace 121 to the push rod 121. Since the contaminated injection needle 132 stored in the provided needle storage hole 121a can be separated and collected quickly and safely, it is possible to significantly shorten the separation and disposal of contaminated syringes.

In the detailed description of the present invention described above, it has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those skilled in the art will appreciate the spirit of the present invention as set forth in the claims below. And it will be understood that various modifications and changes can be made to the present invention without departing from the technical scope.

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

Claims (18)

A cylinder in which a space portion through which injection liquid can be injected is provided, and a needle set unit insertion portion is provided;
A push unit that is slidably moved along the cylinder to inject the injection liquid into the space portion or to be slidably engaged with the space portion to discharge the injection liquid injected into the space portion outside the cylinder; And
It is inserted into the needle set unit insert so that at least a part of the injection needle protrudes out of the cylinder and is fixed inside the cylinder so as to be elastically supported by an elastic member inserted into the needle set insert, and is slid along the cylinder. When the pressure is pushed by a push unit to a predetermined pressure or more, it includes a needle set unit that is released from the fixing and moved toward the push unit by the original restoring force of the elastic member,
The cylinder,
A body part in which the injection liquid is injected, and at least one fixed jaw protruding the needle set unit on an inner peripheral surface;
A needle set unit insertion portion extending from the body portion to communicate with the main body portion and into which the needle set unit is inserted such that at least a portion of the injection needle protrudes outward; And
It is formed protruding on the inner circumferential surface of the needle set unit insertion portion and includes a support jaw for supporting the elastic member inserted between the needle set unit and the needle set unit insertion portion,
The needle set unit,
A rod portion which is inserted into the needle set unit insertion portion so as to protrude partly into the space portion of the cylinder and is provided with a needle insertion hole in communication with the outside and the space portion of the cylinder;
An injection needle coupled to the needle insertion hole so that at least a portion protrudes out of the cylinder;
An elastic member interposed between the needle set unit insertion portion and the rod portion so as to be supported by a support jaw of the needle set unit insertion portion;
A fixing part protruding from an outer circumferential surface of the rod part protruding into the space part of the cylinder, supported by the elastic member, and provided with a fixing groove inserted and fixed into a fixed jaw protruding from the inner circumferential surface of the body part; And
When the fixing part is pressed above a predetermined pressure by a push unit which is interposed between the elastic member and the needle set unit insert so as to protrude at least a portion of the space of the cylinder and slides along the cylinder, the fixing part is cut to make the elastic It includes a cutting blade to move the rod portion toward the push unit side by the original restoring force of the member so that the injection needle is inserted into the cylinder,
The elastic member,
By having 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, the user must move the push unit to the opposite side of the needle set unit after the fixing part is cut by the cutting blade. The reusable disposable safety syringe characterized in that the rod portion is moved to the push unit side by the original restoring force so that the injection needle is inserted into the cylinder. delete According to claim 1,
The cylinder,
A reusable disposable safety syringe further comprising a gripping portion protruding from the main body so that the user can grip it with one hand. According to claim 1,
The cylinder,
The non-reusable disposable safety syringe further comprising a release preventing jaw protruding from the inner circumferential surface of the main body to prevent the push unit from escaping to the outside of the main body by engaging the first piston of the push unit. According to claim 1,
The push unit,
A push rod inserted into the space portion of the cylinder to slide along the cylinder; And
A reusable disposable safety syringe comprising a first piston coupled to the push rod so as to seal between the push rod and the cylinder. The method of claim 5,
The push unit,
A reusable disposable safety syringe further comprising a plurality of protrusions protruding from the outer circumferential surface of the first piston so as to improve the sealing force between the push rod and the cylinder. The method of claim 5,
The push unit,
The second is coupled to the end of the push rod inserted into the cylinder and elastically deformed upon contact with the needle set unit to be discharged through the needle set unit without leaving the injection solution in the cylinder space. Disposable safety syringe that cannot be reused, which further comprises a piston. The method of claim 7,
The second piston,
Disposable safety syringe that is not reusable, characterized in that the portion in contact with the needle set unit is formed convexly. The method of claim 5,
The push unit,
A reusable disposable safety syringe further comprising a pressing portion provided on the push rod so that a user can easily press the push rod with a finger. delete According to claim 1,
The needle insertion hole,
Disposable safety that cannot be reused, characterized in that the part in communication with the space part is gradually widened toward the space part so that a part of the second piston of the push unit can be brought into close contact to improve sealing force. syringe. According to claim 1,
The needle set unit,
To reduce the thickness of the fixing portion so that the fixing portion can be more easily cut by the cutting blade, at the same time, the cutting groove provided in the fixing portion is inserted so that the cutting blade is not shaken when the cutting blade cuts the fixing portion. A disposable safety syringe that cannot be reused. According to claim 1,
The elastic member,
When the fixed portion is cut by the cutting blade by having 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, the rod portion automatically pushes the push unit by the original restoring force of the elastic member. A non-reusable disposable safety syringe characterized by being inserted into the cylinder together with the push unit so that the injection needle is inserted into the cylinder.
delete According to claim 1,
The push unit,
It is inserted into the space part of the cylinder so as to slide along the cylinder, and when the needle set unit is fixed by the push unit, the fixed part, the rod part and the injection needle of the needle set unit moved to the push unit side by the original restoring force of the elastic member. A push rod in which a needle storage hole is inserted and stored;
A needle set provided at an end of a push rod inserted into the cylinder to seal the needle storage hole and cut together with a fixing part by a cutting blade of the needle set unit and moved toward the push unit by the original restoring force of the elastic member. A cutting surface through which the rod portion of the unit and the injection needle are inserted into the needle storage hole of the push rod;
A pressing part combined cap detachably coupled to an end portion of a push rod located outside the cylinder; And
A reusable disposable safety syringe comprising a first piston coupled to the push rod so as to seal between the push rod and the cylinder. The method of claim 15,
The push unit,
A reusable disposable safety syringe further comprising a plurality of protrusions protruding from the outer circumferential surface of the first piston so as to improve the sealing force between the push rod and the cylinder. The method of claim 15,
The push unit,
Reusable, further comprising a second piston coupled to the cutting surface and elastically deformed upon contact with the needle set unit to be discharged through the needle set unit without leaving the injection solution in the cylinder space. Disposable safety syringe. The method of claim 17,
The second piston,
Disposable safety syringe that is not reusable, characterized in that the portion in contact with the needle set unit is formed convexly.

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