KR102512519B1 - Reuse prevention injection device - Google Patents

Abstract

The present invention relates to an injection device for preventing reuse.
More specifically, a frame portion including a frame body formed in a cylindrical shape, a needle hole formed in front of the frame body, and a push rod formed in the rear of the frame body; A needle unit including a needle body configured to be coupled to the needle hole of the frame unit, a needle coupled to the front of the needle body, and a needle through hole formed inside the needle and the needle body; and a push rod body, a part of which is inserted into the frame body through the push rod of the frame unit, and a head member formed in front of the push rod body, and the front or frame body of the frame body along the cylinder of the frame body. A push rod portion configured to be slidable to the rear of the frame body, wherein the push rod portion slides toward the front end of the frame body, and when force is applied to the push rod portion forward of the frame body, the push rod portion It is characterized in that the head member pushes the needle portion so that the needle portion is removed from the needle hole of the frame portion.

Description

Reuse prevention injection device {REUSE PREVENTION INJECTION DEVICE}

The present invention relates to an injection device for preventing reuse.

More specifically, in a state where the push rod is slid toward the front end of the frame body, when force is applied to the push rod toward the front of the frame body, the head member of the push rod pushes the needle to remove the needle from the needle mouth of the frame. It relates to an injection device for preventing reuse configured to prevent reuse by doing so.

In general, injection devices are universally used in all fields related to medical treatment, such as blood sample collection, drug administration, and fluid supply from patients. must be discarded.

In particular, it is necessary to recognize that the injection device must be used disposablely because reuse of the injection device may cause terrifying diseases such as AIDS.

In addition, there was a case of collecting discarded syringes from hospitals and reselling them through a cleaning and repackaging process, which made the World Health Organization (WHO) authorities nervous. Moreover, cases in which drug addicts share a syringe for injecting drugs have occurred, causing a great hindrance to the prevention of infectious diseases.

Such a disposable injection device is configured to separate the luer-lock tip from the injection device and dispose of it after use for safety. When the hospital workers separate it by hand after use, the Luer lock tip to which the injection needle is coupled from the injection device is not separated, and the hand slips, and the user, such as a hospital worker, is stabbed with a contaminated injection needle during use There is a problem that safety accidents such as secondary infection may occur.

As one of the techniques for solving these problems, Patent Publication No. 10-2020-0017449 discloses a non-reusable disposable safety syringe.

1 is a view showing a conventional non-reusable disposable safety syringe. Referring to the attached FIG. 1, a conventional non-reusable disposable safety syringe will be described. When the user pushes the push unit to complete the injection of the injection solution in the cylinder to the patient, and then removes the pressing force applied to the push unit, the injection needle is inserted into the cylinder. It is characterized in that the contaminated injection needle is not exposed to the outside of the syringe by being automatically inserted into the needle storage hole of the push rod.

To describe the conventional non-reusable disposable safety syringe in detail, a cylinder 1 having a space for injecting an injection solution and a needle set unit insertion unit; a push unit (2) slidably coupled to the space portion to slide along the cylinder (1) to inject an injection solution into the space portion or to discharge the injection solution injected into the space portion to the outside of the cylinder; and inserted into the needle set unit insertion part so that at least a portion of the injection needle protrudes out of the cylinder 1 and is elastically supported by the elastic member 3 inserted into the needle set insertion part inside the cylinder 1. When the push unit 2, which is fixed and slides along the cylinder 1, presses a predetermined pressure or more, the fixation is released and the needle is moved toward the push unit 2 by the restoring force of the elastic member 3. It is characterized in that it includes a needle set unit (4) stored in the needle storage hole (5).

However, in the prior art, the needle set unit 4, which is elastically supported by the elastic member 3 by the pressure generated when the liquid medicine or the like is sucked into the space of the cylinder 1 using the push unit 2 There is a problem in that the needle of the needle may be separated from the needle set unit and moved to the needle storage hole (5).

That is, since the difference in magnitude between the pressure generated by the suction operation of the push unit 2 and the pressure generated by the needle suction operation of the push unit 2 after use of the injection device is not large, There is a problem in that the needle coupled to the set unit 4 may be moved to the needle storage hole 5 in response to pressure generated from the suction operation of the push unit 2 .

Publication No. 10-2020-0017449 (2020.02.18.) Public Utility Model Publication No. 20-1993-0004460 (1993.03.20.) Registered Utility Model Publication No. 20-0450065 (2010.08.27.) Public Utility Model Publication No. 20-2012-0001999 (2012.03.19.)

The present invention has been made to solve the above problems, and the problem to be solved in the present invention is, in a state in which the push rod is slid to the front end of the frame body, when force is applied to the push rod in the front of the frame body It is an object of the present invention to provide an injection device for preventing reuse, wherein the head member of the push rod pushes the needle portion to remove the needle portion from the needle hole of the frame portion, thereby preventing reuse.

The injection device for preventing reuse according to the present invention for solving the above problems is a frame unit including a frame body formed in a cylinder, a needle hole formed in front of the frame body, and a pusher formed in the rear of the frame body; A needle unit including a needle body configured to be coupled to the needle hole of the frame unit, a needle coupled to the needle body, and a needle through hole formed inside the needle and the needle body; and a push rod body, a part of which is inserted into the frame body through the push rod of the frame unit, and a head member formed in front of the push rod body, and the front or frame body of the frame body along the cylinder of the frame body. To include a push rod configured to slide to the rear of the.

In addition, the frame portion includes a catching film formed inside the front side of the frame body and a catching film through-hole formed at a centrifugal end of the catching film, and the push rod unit slides to the front end of the frame body, When a force is applied to the push part in the front of the frame body, the head member of the push part pushes the needle part so that the needle part deforms, cuts or damages the frame part locking film and is detached from the needle hole of the frame part. And, the head member is characterized in that it is configured to be caught and fixed to the deformed, cut or damaged locking film while the needle part is removed.

In addition, the needle part has a catching body extending from the rear end of the needle body and configured to pass through the catching film through-hole, and a catching member formed at the rear end of the catching body and configured to be caught by the catching film. The head member is configured to release the jamming of the locking member when force is applied to the push rod toward the front of the frame body in a state in which the push rod is slid toward the front end of the frame body. do.

In addition, in the head member, a stripping body extending from the front end of the pushing rod body and a frame body formed at the front end of the stripping body are formed on the pushing rod portion in a state in which the pushing rod portion is slid toward the front end of the frame body. It is characterized in that a separation unit configured to release the locking of the locking member when force is applied to the front of the locking member is included.

In addition, the locking member is formed in a shape gradually inclined forward from the centrifugal end of the needle body toward the outer circumference, and the stripping unit is formed in a concave shape at the front end so that the push rod slides toward the front end of the frame body. In a moved state, when force is applied to the push rod toward the front of the frame body, the locking member is caused to collapse toward the center of the needle body according to the shape of the distal end of the stripping unit.

In addition, the frame portion may include one or a plurality of cutout grooves formed in an outward direction of the engaging film from the through hole of the engaging film.

In addition, the frame portion may include a breakage groove formed between the locking membrane through-hole and an outer circumference of the locking membrane and formed along a circumferential direction of the locking membrane.

In addition, the frame portion includes an extension frame extending forward from the needle hole and configured to surround the outer circumference of the needle body when the needle portion is coupled; And characterized in that it includes an eccentric projection protruding from the inner circumference of the extension frame.

In addition, the needle part includes a plurality of anti-rotation protrusions formed on the outer circumference of the needle body at regular intervals along the circumferential direction of the needle body so that anti-rotation grooves are formed at intervals between them. The portion is configured such that the eccentric protrusion is inserted into one or a plurality of the plurality of anti-rotation grooves formed by the plurality of anti-rotation protrusions, so that it is not rotated at an angle exceeding 180 °.

In addition, the push rod unit includes a gasket provided at the front of the push rod body and configured to surround the head member, and the head member protrudes along the outer circumference of the front side of the head member to the inside front of the gasket. A first locking jaw and a second locking jaw protruding along the outer circumference of the rear side of the head member and engaging the inside rear of the gasket are included, and the push rod body has a cross section formed in a '+' shape It extends from the first body member and the front of the first body member, and has a '+' shape in cross section, but is formed in a smaller size than the first body member, and the front end contacts the rear of the gasket to form the gasket. It is characterized in that the second body member configured to support is included.

According to the injection device for preventing reuse according to the present invention, in a state in which the push rod is slid toward the front end of the frame body, when force is applied to the push rod toward the front of the frame body, the head member of the push rod pushes the needle, so that the needle moves toward the frame. It has the effect of being configured to prevent reuse by being removed from the needle hole of the part.

In addition, according to the present invention, in a state in which the locking member formed at the end of the locking body is configured to be hooked on the locking film, when the head member is configured to release the locking member while the push rod slides, the needle part is configured to release the locking member of the frame. As it is removed from the frame, there is an effect of deforming, cutting, or damaging the frame portion, and the push rod is fixed to the frame portion to prevent reuse.

In addition, according to the present invention, in a state configured such that one or a plurality of cut grooves are formed from the locking membrane through hole toward the outer side of the locking membrane, when the push rod unit slides to push the needle unit, the locking membrane is cut along the incision groove and caught. There is an effect of being able to prevent re-use as the hooking of the hooking member caught on the membrane is released and the needle part is removed from the needle hole of the frame part.

In addition, according to the present invention, in a state configured such that a breakage groove is formed between the frame through-hole and the outer circumference of the locking membrane along the circumferential direction of the locking membrane, when the push rod portion slides to push the needle portion, the locking membrane is damaged along the broken groove. As the jamming of the hooking member caught on the hooking film is released, there is an effect of preventing reuse as the needle part is removed from the needle hole of the frame part.

In addition, according to the present invention, in a state in which an eccentric projection is formed inside the extension frame extending from the needle hole of the frame part, when the push rod part slides to push the needle part, the needle body of the needle part removed from the needle hole is eccentric projection There is an effect of preventing safety accidents that may occur during removal of the needle unit by allowing the removal direction to be guided by the.

In addition, according to the present invention, a plurality of anti-rotation protrusions are formed on the outer circumference of the needle body to protrude at regular intervals along the circumferential direction of the needle body so that anti-rotation grooves are formed at intervals between them, thereby preventing a plurality of rotation. An eccentric protrusion is inserted into one or more of the grooves to prevent the needle portion from rotating at an angle exceeding 180°.

In addition, according to the present invention, the second body member having a '+' cross section is configured to be introduced into the gasket while cutting the rear surface of the gasket, so that the push rod is slid to the front end of the frame body. Even in, there is an effect that the head member of the push part is configured to push the needle part.

In addition, according to the present invention, the diameter of the head member between the first and second locking jaws is at least larger than the diameter of the head member on the front side of the first locking jaw, so that the head member between the first and second locking jaws is formed. By being caught on the front side of the frame portion, there is an effect of preventing the head member of the push rod from sliding backward after pushing the needle portion.

1 is a view showing a conventional reuse-preventing safety syringe.
Figure 2a is a view showing an injection device for preventing reuse according to the present invention.
Figure 2b is a view showing a state in which the needle portion is removed from the injection device for preventing reuse according to the present invention.
Figures 3a to 3c is a view showing an embodiment of the injection device for preventing reuse according to the present invention.
Figures 4a to 4c is a view showing an embodiment of the locking member and the removal unit of the injection device for preventing reuse according to the present invention.
Figure 4d is a view showing another embodiment of the locking body and the locking member of the injection device for preventing reuse according to the present invention.
Figures 5a and 5b is a view showing an embodiment of the cutting groove of the injection device for preventing reuse according to the present invention.
Figure 6a is a front view showing a broken groove of the injection device for preventing reuse according to the present invention.
Figure 6b is a cross-sectional view showing a broken groove of the injection device for preventing reuse according to the present invention.
Figure 6c is a view showing another embodiment of the broken groove of the injection device for preventing reuse according to the present invention.
Figure 7a is a view showing an eccentric projection of the injection device for preventing reuse according to the present invention.
Figures 7b and 7c is a view showing an embodiment of the eccentric protrusion of the injection device for preventing reuse according to the present invention.
Figure 8a is a view showing the anti-rotation protrusion and anti-rotation groove of the injection device for preventing reuse according to the present invention.
Figure 8b is a view showing an embodiment of the anti-rotation protrusion and anti-rotation groove of the injection device for preventing reuse according to the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be.

On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this specification 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 dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, process, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, processes, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in this application, they should not be interpreted in ideal or excessively formal meanings. don't

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventor appropriately uses the concept of terms in order to explain his/her invention in the best way. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical spirit of the present invention. In addition, unless there is another definition in the technical terms and scientific terms used, they have meanings commonly understood by those of ordinary skill in the art to which this invention belongs, and the gist of the present invention is described in the following description and accompanying drawings. Descriptions of well-known functions and configurations that may be unnecessarily obscure are omitted. The drawings introduced below are provided as examples to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention may be embodied in other forms without being limited to the drawings presented below. Also, like reference numerals denote like elements throughout the specification. It should be noted that like elements in the drawings are indicated by like numerals wherever possible.

In the present invention, in the state in which the push rod is slid to the front end of the frame body, when force is applied to the push rod in the front of the frame body, the head member of the push rod pushes the needle to remove the needle from the needle hole of the frame, thereby reusing it. It relates to an injection device for preventing reuse configured to prevent.

Hereinafter, the injection device for preventing reuse according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2a is a view showing an injection device for preventing reuse according to the present invention, Figure 2b is a view showing a state in which the needle portion is removed from the injection device for preventing reuse according to the present invention, Figures 3a to 3c are for preventing reuse according to the present invention Figures 4a to 4c are views showing an embodiment of the locking member and the removal unit of the injection device for preventing reuse according to the present invention, and Figure 4d is a view showing an embodiment of the injection device for preventing reuse according to the present invention. It is a drawing showing another embodiment of the engaging body and the engaging member.

According to the accompanying Figures 2a to 4d, the injection device for preventing reuse of the present invention includes a frame portion 100, a needle portion 200 and a push rod portion 300.

In the injection device for preventing reuse of the present invention, the needle portion 200 is detached from the frame portion 100 using the push rod portion 300, so that the injection device for preventing reuse according to the present invention cannot be reused. will be.

In the frame portion 100, a frame body 110 formed in a cylindrical shape, a needle sphere 120 formed in front of the frame body 110, and a push rod 130 formed in the rear of the frame body 110 ) are included.

At this time, the frame portion 100 may include a latching film 140 formed inside the front side of the frame body 110 and a hooking film through hole 150 formed at the centrifugal end of the latching film 140. .

The hooking film 140 and the hooking film through hole 150 are caught by the hooking film 140 when the hooking member 250 of the needle part 200 is introduced through the hooking film through hole 150. By doing so, the needle unit 200 is supported so as not to be separated from the frame body 110 of the frame unit 100 before the push by the push rod unit 300 is performed.

In addition, the clasp 140 may be made of the same material as the frame body 110, and depending on the implementation environment, the clasp 140 can be easily moved by sliding the push rod 300. In order to be deformed, cut, or damaged, it may be made of a separate material having a thinner thickness than the frame body 110 or weak strength.

The needle part 200 includes a needle body 210 configured to be selectively coupled to the needle sphere 120 of the frame part 100 so as to be released, and a needle coupled to the front of the needle body 210 ( 220) and a needle through hole 230 formed inside the needle 220 and the needle body 210.

At this time, the needle part 200 is formed to extend backward from the rear end of the needle body 210 to pass through the engaging membrane through-hole 150, and the engaging body 240 and the engaging body 240 A hooking member 250 formed at a rear side end and configured to be hooked on the hooking film 140 may be included.

As shown in FIGS. 4A to 4C , the hooking body 240 may be extended in a rod shape from the rear end of the needle body 210 to pass through the hooking membrane through-hole 150. The length of the hooking body 240 is the length of the hooking film 140 between the rear end of the needle body 210 and the hooking film 140 in a state where the needle part 200 is coupled to the needle hole 120 of the frame part 100. It is preferable to be composed of the same length as the spacing between the rear surfaces of.

As described above, the catching member 250 is inserted through the catching film through-hole 150 and configured to be caught by the catching film 140, and the shape of the catching member 250 is the shape of the catching film. Any shape can be changed as long as it is inserted through the through hole 150 and can be caught on the locking film 140 .

The shape of the locking member 250 can be applied and implemented by being transformed into various shapes, such as a hook shape, an undercut shape, and an air bag shape, as long as the hook shape, undercut shape, and air bag shape can be released by the disengagement unit 322 to be described later. A detailed description of the shape of the member 250 will be described later with reference to FIGS. 4A to 4C.

In addition, the needle part 200 is provided along the outer circumference of the needle body 210 to improve the airtightness between the needle sphere 120 of the frame part 100 and the needle body 210 (O-ring) 280) may be included.

Depending on the implementation environment, the O-ring 280 may be changed to a gasket or the like as long as the airtightness between the needle port 120 and the needle body 210 can be improved, and applied and implemented. .

In addition, the needle part 200 is formed along the circumference of the front end of the needle body 210, and when the needle part 200 is coupled to the needle sphere 120 of the frame part 100, the frame body ( 110) may include a coupling step 290 configured to be in contact with the front side end.

The coupling step 290 is configured so that the needle body 210 is inserted through the needle hole 120 and coupled to the frame body 110, the needle body 210 is the frame body ( 110) and is configured to prevent the needle part 200 from not being properly positioned.

In other words, the front side of the needle part 200 is configured to be fixed to the front side end of the frame body 110 by the coupling step 290, and the rear side of the needle part 200 is configured to be fixed to the engaging member 250. ) is configured to be caught on the locking film 140 of the frame unit 100, so that the needle unit 200 of the present invention is stably coupled to the front side of the frame body 110.

A part of the push rod unit 300 is formed on the push rod body 310 inserted into the frame body 110 through the push rod 130 of the frame unit 100 and in front of the push rod main body 310. A head member 320 is included, and the push rod part 300 is configured to be slidable to the front of the frame body 110 or to the rear of the frame body 110 along the cylinder of the frame body 110. , The injection device for preventing reuse of the present invention is configured to inject a drug solution or the like filled into the frame body 110 or collect blood by using the slide movement of the push rod part 300 .

As shown in FIGS. 2B and 2C, the push rod part 300 moves the push rod part 300 forward so that the head member 320 presses the rear of the needle body 210 forward. When the fixation of the needle body 210 and the needle port 120 is released, the needle part 200 is removed and discharged separately.

In detail, as described above, the needle body 210 is in a state in which the locking member 250 and the locking film 140 are coupled so that they can be selectively released. After is moved to the foremost position so that the front end side of the head member 320 comes into contact with the rear end side of the needle body 210, when force is continuously applied forward, the needle body 210 moves forward As the fixation with the needle sphere 120 is released, the needle portion 200 may be separated from the frame portion 100.

At this time, the head member 320 includes a removal body 321 extending from the front end of the push rod body 310 and a front end of the frame body 110 formed at the front end of the removal body 321. When a force is applied to the push rod 300 in a forward direction of the frame body 110 in a sliding state, a separation unit 322 configured to release the jamming of the clasp member 250 may be included.

In addition, the frame body 110 may include a supporting member 111 formed at the rear of the frame body 110, and the pushing member 300 includes a pressing member formed at the rear of the pushing body 310 (340) may be included.

The supporting member 111 and the pressing member 340 are intended to allow the user to operate the injection device for preventing reuse of the present invention with one hand, and the supporting member 111 can be used with the index finger and the middle finger. It is to support the injection device of the present invention, and the pressing member 340 is configured to be pressed using the thumb in a state in which the supporting member 111 is supported with the index finger and the middle finger, so that the mill The loaner 300 is configured to slide forward of the frame body 110.

At this time, the finger for manipulating the supporting member 111 and the pressing member 340 can be changed as much as possible according to the implementation environment and the user's skill level.

On the other hand, as shown in FIG. 4A, the hooking member 250 is formed in a hook shape gradually inclined forward in the outer circumferential direction from the centrifugal side of the needle body 210 to be caught on the hooking film 140. The separation unit 322 may be configured to have a concave front end to disengage the locking member 250 .

The shapes of the holding member 250 and the removal unit 322 are such that the frame body (300) is attached to the frame body ( 110), when force is applied to the front, the engaging member 250 is pressed by the detaching unit 322 and is compressed toward the center of the needle body 210, thereby preventing the engaging member 250 from being caught. By being released, the locking member 250 is configured to be released through the locking membrane through-hole 150 .

At this time, as shown in FIG. 4B, the holding member 250 has a locking surface 250a configured to contact the locking film 140 at an angle exceeding 90 degrees with respect to the locking body 240. The shape of the catching member 250 is such that the catching member 250 can be easily released from the catching member 250 by the removing unit 322 .

As shown in FIGS. 4A to 4C , the shape of the holding member 250 and the shape of the removing unit 322 are such that the removing unit 322 is moved by the force applied to the push rod 300. Any shape in which the locking member 250 can be released by pressing the 250 can be deformed and combined into various shapes.

In particular, the catching member 250 may be formed in the form of a bag at the end of the catching body 240 and filled with air therein, and the catching member 250 slides to the bag. It may be formed in a shape capable of damaging the engaging member 250 formed in the shape.

At this time, when the holding member 250 is formed in the shape of a bag and is configured to fill the inside with air, the removing unit 322 breaks the bag-shaped holding member 250 while sliding and moving to form the bag. The air filled in the locking member 250 may be released to the outside so that the volume of the locking member 250 is reduced, thereby releasing the locking of the locking member 250.

However, in the case of an embodiment in which the locking member 250 is formed in the form of a bag, a problem may occur in the process of inserting the locking member 250 through the locking film through hole 150, resulting in the production of defective products. It is preferable that the locking member 250 is formed in a shape capable of being inserted or removed through the locking membrane through-hole 150 by using the elasticity of the locking body 240 .

On the other hand, as shown in FIG. 4D, the catching body 240 and the catching member 250 are formed in a cylindrical shape and the catching member 250 is formed around the circumference of the catching body 240. The shape (S1) protruding along the direction, the disengaging unit 322 in a state in which the catching body 240 is formed in a cylindrical shape and the catching member 250 protrudes along the circumferential direction of the catching body 240 The releasing surface 250b of the engaging member 250 in contact with the curved shape (S2), the engaging body 240 is formed in a cylindrical shape, but the inside is formed in a sealed shape, and the needle through hole 230 in the center In this formed shape (S3), the locking body 240 is formed in a cylindrical shape and the inside is sealed, and the release surface 250b of the locking member 250 in a state where the needle through hole 230 is formed in the center It can be formed in various shapes such as the curved shape (S4), and in this way, the engaging body 240 is formed in a cylindrical shape and the engaging member 250 is formed to protrude along the circumferential direction of the engaging body 240 In this case, the catching member 250 may be detached from the catching film 140 while deforming, cutting or damaging the catching film 140 by the push of the removal unit 322 .

That is, the catching body 240 and the catching member 250 are capable of separating the catching member 250 from the catching film 140 when the catching member 250 is pushed by the removing unit 322 . Any structure can be modified and implemented in various shapes.

In addition, as shown in FIGS. 3A to 3C , the push rod unit 300 may include a gasket 330 provided in front of the push rod body 310 and configured to surround the head member 320, In the head member 320, a first locking jaw 323 protrudes along the outer circumference of the front side of the head member 320 and is caught on the inside front of the gasket 330 and the rear side of the head member 320. A second locking jaw 324 may be included that protrudes along the outer circumference and is caught on the inside rear of the gasket 330, and the push rod body 310 has a first cross section formed in a '+' shape. It is formed extending from the front of the body member 311 and the first body member 311, and has a '+' cross section, but is formed in a smaller size than the first body member 311, and the front end is the gasket. A second body member 312 configured to support the gasket 330 in contact with the rear of the 330 may be included.

At this time, the gasket 330 is provided in front of the push rod body 310 inserted into the frame body 110 to maintain airtightness inside the frame body 110, Accordingly, any structure and shape capable of maintaining the airtightness of the inside of the frame body 110, such as an O-ring shape, may be modified and implemented in various shapes.

As shown in FIGS. 3B and 3C, the first locking jaw 323 and the second locking jaw 324 are formed on the head member 320 formed in front of the push rod body 310, and the gasket ( 330) to be fixed to the circumference of the head member 320, in a state in which the push rod 300 slides to the front end of the frame body 110, the push rod 300 When force is applied to the front of the frame body 110, the first locking jaw 323 passes through the first gasket passage 331 formed in the front of the gasket 330 to the outside of the gasket 330. It can be configured to break away.

That is, when the push rod part 300 slides toward the front end of the frame body 110, the gasket 330 slides toward the front end of the frame body 110 together with the push rod part 300. By coming into contact with the front end of the frame body 110, the push rod 300 is in a state in which it cannot be moved even if force is applied to the front of the frame body 110, and the first locking jaw 323 is configured to escape to the outside of the gasket 330 through the first gasket passage 331 of the gasket 330 when force is applied to the push rod 300 forward of the frame body 110, The head member 320 formed in front of the push rod part 300 of the present invention is configured to move and push the needle part 200.

In other words, when force is applied toward the front of the frame body 110 to the push rod 300 in a state in which the push rod 300 slides toward the front end of the frame body 110, the gasket ( 330) is fixed in a state of being in contact with the front end of the frame body 110, and the push rod unit 300 excluding the gasket 330 is moved forward of the frame body 110 so that the push unit 300 As the head member 320 is configured to push the needle portion 200, the needle portion 200 is configured to be removed from the needle sphere 120 of the frame portion 100.

At this time, in a state where the push rod part 300 slides toward the front end of the frame body 110, which is repeatedly described in the present invention, force is applied to the push rod part 300 toward the front of the frame body 110. In the case of being applied', 'a state in which the push rod 300 is slid to the front end of the frame body 110', the push rod 300 is slid to the front end of the frame body 110, and the gasket ( 330) refers to a state in which the gasket 330 is no longer moved forward of the frame body 110 by being in contact with the front end of the frame body 110, In the case where force is applied to the front of the frame body 110, the push rod 300 excluding the gasket 330 is in a state in which the gasket 330 is no longer moved forward of the frame body 110 This means a state in which the head member 320 of the push rod part 300 pushes the needle part 200 as it is moved forward of the frame body 110 .

According to the attached FIGS. 2A and 2B, the total length A of the push rod 300 and the frame body 110 in a state in which the push rod 300 is slid to the front end of the frame body 110 is, A state in which the needle part 200 is removed by applying force to the push rod part 300 forward of the frame body 110 in a state in which the push rod part 300 slides toward the front end of the frame body 110 It may be configured longer than the sum of the length (B) of the push rod 300 and the frame body 110 of the.

At this time, the total length A of the push rod 300 and the frame body 110 in a state in which the push rod 300 is slid to the front end of the frame body 110 and the push rod 300 are the frame body The push rod part 300 and the frame body in a state in which the needle part 200 is removed as force is applied to the push rod part 300 forward of the frame body 110 in a state of sliding to the front end of the 110 The total length (B) of (110) may be configured to have a length difference by (Δ) as shown in FIG. 2A.

In the present invention, (Δ) is illustrated as being formed as much as the second body member 312 of the push rod body 310, but (Δ) depends on the implementation environment so that the push rod portion 300 is the frame body 110 It is understood as the length of the push rod 300 entering the inside of the gasket 330 when force is applied to the push rod 300 forward of the frame body 110 in a state of sliding to the front end of ) it is desirable

In addition, when the first locking jaw 323 of the head member 320 is separated from the gasket 330 through the first gasket passage 331 formed in front of the gasket 330, the push rod body A portion of the second body member 312 of 310 may be configured to flow into the gasket 330 while cutting the rear surface of the gasket 330 .

To this end, an incision groove having a shape corresponding to the '+' shape of the second body member 312 may be formed on the rear surface of the gasket 330, and the incision formed on the rear surface of the gasket 330 may be formed. Since the groove is preferably configured to be deformed according to the cross-sectional shape of the second body member 312 and cut by the second body member 312, a detailed description thereof will be omitted.

In the injection device for preventing reuse of the present invention, in a state in which the push rod part 300 is slid to the front end of the frame body 110, force is applied to the push rod part 300 forward of the frame body 110 In this case, the gasket 330 configured to surround the head member 320 of the push rod body 310 is fixed to the front end of the frame body 110, and the push rod unit 300 excluding the gasket 330 ) is moved to the front of the frame body 110 so that the removal unit 322 of the head member 320 releases and pushes the locking member 250, so that the needle part 200 As it is removed from the needle sphere 120 of the frame portion 100, it is configured to prevent reuse of the injection device for preventing reuse according to the present invention.

On the other hand, the injection device for preventing reuse of the present invention is configured to be detachable from the needle part 200 so that the needle 220 of the needle part 200 is not exposed to the outside, thereby hygienically protecting the needle 220. A cover unit 400 configured to do so may be further included.

Since the cover part 400 is configured to be attachable and detachable to a general injection device to protect a needle, a detailed description of the cover part 400 will be omitted.

Figures 5a and 5b is a view showing an embodiment of the cutting groove of the injection device for preventing reuse according to the present invention, Figure 6a is a front view showing the broken groove of the injection device for preventing reuse according to the present invention, Figure 6b is a view showing the present invention A cross-sectional view showing the broken groove of the injection device for preventing reuse according to, Figure 6c is a view showing another embodiment of the broken groove of the injection device for preventing reuse according to the present invention.

According to the attached Figures 2a, 3a, 5a and 5b, the frame portion 100 of the present invention has one or a plurality of formed in the outer direction of the locking film 140 from the locking film through hole 150. An incision groove 160 may be included.

The incision groove 160 is such that when the holding member 250 caught on the holding film 140 is released by the removal unit 322 of the head member 320, the holding film 140 By being configured to be cut along the incision groove 160, the head member 320 of the push rod part 300 removes the needle part 200 from the needle hole 120 of the frame part 100. This is to reduce the amount of force required for

In other words, as shown in FIGS. 5A and 5B , when a plurality of incision grooves 160 are formed along the circumferential direction of the locking film 140, the push rod 300 is the frame body 110. It slides to the front end, and force is applied to the push rod part 300 so that the head member 320 of the push rod part 300 pushes the needle part 200 so that the hooking member 250 of the needle part 200 ) is moved forward of the frame part 100, the catching film 140 is configured to be cut along the cutting groove 160 by the moving force of the catching member 250, It is configured so that the locking member 250 can be released more easily than when the incision groove 160 is not formed.

To this end, when the plurality of incision grooves 160 are formed, it is preferable to be spaced apart from each other at regular intervals along the circumferential direction of the locking film 140, and according to the number of the incision grooves 160 The magnitude of the strength of the locking film 140 may be configured to vary.

Depending on the implementation environment, the incision groove 160 cuts the shape of the clasp film 140 more easily than when the incision groove 160 is not formed, so that the clasp member 250 is easily released. Anything that can be done can be modified and implemented.

In addition, the engaging film 140 is not cut in the process of injecting the chemical liquid by the slide movement of the pushing stick part 300, and the engaging member 250 is caught by the removing unit 322 of the pushing stick part 300. It is preferable to be configured to be cut along the incision groove 160 only during the release process, and for this purpose, the strength of the incision groove 160 is at least introduced into the frame body 110 or the frame body 110 ) is preferably configured to be greater than the pressure of the chemical liquid discharged from the inside.

At this time, since the pressure of the chemical solution introduced into the frame body 110 or discharged from the inside of the frame body 110 can be easily derived through repeated injection and discharge of the chemical solution, A detailed description of the pressure of the chemical solution introduced into the interior or discharged from the inside of the frame body 110 will be omitted.

According to the attached Figures 2, 3a, 6a, 6b and 6c, the frame portion 100 of the present invention is formed between the locking membrane through-hole 150 and the outer circumference of the locking membrane 140 However, a breakage groove 170 configured to be formed along the circumferential direction of the locking film 140 may be included.

The broken groove 170 is such that when the holding member 250 caught on the holding film 140 is released by the removal unit 322 of the head member 320, the holding film 140 Since the head member 320 is configured to be damaged along the breakage groove 170 by the removal unit 322, the head member 320 of the push rod 300 removes the needle unit 200 from the frame. This is to reduce the amount of force required to remove the part 100 from the needle hole 120.

In other words, as shown in the attached FIGS. 6A to 6C , when the breakage groove 170 is formed along the circumferential direction of the locking film 140, the push rod 300 is the frame body 110. In the state of sliding to the front end, force is applied to the push rod part 300 so that the head member 320 of the push rod part 300 pushes the needle part 200, thereby locking member of the needle part 200 250 is configured to be damaged along the breakage groove 170 by the moving force of the holding member 250 while the frame part 100 moves forward, It is configured so that the locking member 250 can be released more easily than when the breakage groove 170 is not formed.

Depending on the implementation environment, the broken groove 170 is more easily broken than when the broken groove 170 is not formed, so that the locking member 250 is easily released from the locking member 250. Anything that can be made can be modified and implemented, and as shown in FIGS. 6A to 6C, the broken groove 170 is formed in a V-groove shape on the front or rear surface of the locking film 140 to remove the As the unit 322 moves, it is most preferable that a portion adjacent to the engaging membrane through-hole 150 is bent toward the front of the frame body 110 .

In addition, the latching film 140 is not damaged during the process of injecting the chemical liquid by the slide movement of the push bar 300, and the latching member 250 is caught by the removal unit 322 of the push bar 300. It is preferable to be configured to be damaged along the broken groove 170 only during the release process, and for this purpose, the strength of the broken groove 170 is at least introduced into the frame body 110 or the frame body 110 ) is preferably configured to be greater than the pressure of the chemical liquid discharged from the inside to the outside.

At this time, since the pressure of the chemical solution introduced into the frame body 110 or discharged from the inside of the frame body 110 can be easily derived through repeated injection and discharge of the chemical solution as described above, the frame body A detailed description of the pressure of the chemical solution introduced into the interior of the frame body 110 or discharged from the interior of the frame body 110 will be omitted.

Figure 7a is a view showing an eccentric projection of the injection device for preventing reuse according to the present invention, Figures 7b and 7c is a view showing an embodiment of the eccentric projection of the injection device for preventing reuse according to the present invention, Figure 8a is a view showing the present invention It is a view showing the anti-rotation protrusion and anti-rotation groove of the injection device for preventing reuse according to the present invention, Figure 8b is a view showing an embodiment of the anti-rotation protrusion and anti-rotation groove of the injection device for preventing reuse according to the present invention.

According to the accompanying Figures 7a to 7c, the frame portion 100 of the present invention is formed extending forward from the needle sphere 120, and when the needle portion 200 is coupled, the outside of the needle body 210 An extension frame 180 configured to surround the circumference and an eccentric projection 190 protruding from the inner circumference of the extension frame 180 may be included.

The eccentric protrusion 190 may protrude one or more from the inner circumference of the extension frame 180, and when the eccentric protrusion 190 is formed in plurality, the extension frame 180 is cut in half from virtual When divided, it may be configured to be formed eccentrically on only one side.

The eccentric projection 190 protrudes from one side of the inner circumference of the extension frame 180, so that the needle part 200 separated from the needle hole 120 of the frame part 100 is the needle hole. By being configured to obstruct the movement path of the needle part 200 in the process of being separated from 120, the needle part 200 is removed in a direction in which the eccentric protrusion 190 does not exist, and the needle part 200 ) is configured to prevent safety accidents that may occur as the force transmitted from the push rod 300 protrudes in a random direction.

In other words, in the injection device for preventing reuse of the present invention, in a state in which the gasket 330 is slid forward inside the frame body 110, force is further applied to the push rod 300 to move the first locking jaw ( 323) is configured to pass through the first gasket passage 331 of the gasket 330, so that the push rod part 300 removes the needle part 200 from the frame part 100. 1 When the locking jaw 323 is caught in the first gasket passage 331 of the gasket 330, a force exceeding the strength of the front side of the gasket 330 must be applied to the push rod 300 to Since the first holding jaw 323 is able to pass through the first gasket passage 331, the needle part 200 is moved by the force exceeding the strength of the front side of the gasket 330 to the frame part ( 100), the needle part 200 is configured to collide with the eccentric protrusion 190, thereby reducing the force exceeding the strength of the front side of the gasket 330 and at the same time, the needle part 200 ) is configured to guide the removal direction of the

According to the accompanying Figures 8a and 8b, the needle portion 200 of the present invention is spaced apart at regular intervals along the circumferential direction of the needle body 210 on the outer circumference of the needle body 210, so that the distance between A plurality of anti-rotation protrusions 260 for forming the anti-rotation groove 270 may be included, and the needle part 200 may include a plurality of anti-rotation grooves 270 formed by the plurality of anti-rotation protrusions 260. ) By being configured so that the eccentric protrusion 190 is inserted into one or a plurality of, it can be configured not to rotate at an angle exceeding 180 °.

As described above, the anti-rotation protrusion 260 and the anti-rotation groove 270 prevent the needle part 200 from being randomly rotated while being coupled to the needle sphere 120 of the frame part 100. It is configured for, and is configured to use the eccentric projection 190 configured to guide the removal direction of the needle portion 200.

That is, since the eccentric protrusion 190 is inserted into the anti-rotation groove 270 formed by the anti-rotation protrusion 260, the anti-rotation protrusion 260 is formed around the outer circumference of the needle body 210. It is formed in the needle part 200 and the frame part 100 is formed to protrude in a straight line according to the direction of coupling and detachment, and is blocked by the eccentric projection 190 when the needle part 200 is removed It would be desirable to avoid that.

Therefore, the anti-rotation protrusion 260 and the anti-rotation groove 270 are spaced apart at regular intervals along the circumferential direction of the needle body 210 to improve the ease of manufacturing the injection device for preventing reuse according to the present invention. Alternatively, it may be formed only at a position corresponding to the position of the eccentric projection 190 in order to reduce the manufacturing cost of the injection device for preventing reuse according to the present invention.

According to the present invention, in the state in which the push rod is slid to the front end of the frame body, when force is applied to the push rod in the front of the frame body, the head member of the push rod pushes the needle to remove the needle from the needle hole of the frame. By doing so, there is an effect of being configured to prevent reuse.

In the above description, various embodiments of the present invention have been presented and described, but the present invention is not necessarily limited thereto. It can be seen that branch substitutions, modifications and alterations are possible.

100: frame part
110: frame body 111: support member
120: needle ball 130: wheat cod
140: locking membrane 150: locking membrane through-hole
160: cutting groove 170: broken groove
180: extension frame 190: eccentric protrusion
200: needle part
210: needle body 220: needle
230: needle through hole 240: locking body
250: locking member 260: anti-rotation protrusion
270: anti-rotation groove 280: O-ring
290: combination step
300: wheatgrass
310: push rod body
311: first body member 312: second body member
320: head member
321: removal body 322: removal unit
323: first locking jaw 324: second locking jaw
330: gasket
331: first gasket passage
340: pressing member
400: cover part

Claims (10)

A frame part 100 including a frame body 110 formed in a cylindrical shape, a needle hole 120 formed in front of the frame body 110, and a push rod 130 formed in the rear of the frame body 110. );
A needle body 210 configured to be selectively coupled to the needle sphere 120 of the frame portion 100 to be released, a needle 220 coupled to the needle body 210, and the needle 220 and the needle A needle portion 200 including a needle through hole 230 formed inside the body 210; and
A push rod body 310, a part of which is inserted into the frame body 110 through the push rod 130 of the frame unit 100, and a head member 320 formed in front of the push rod body 310 included, a push rod 300 configured to be slidable to the front of the frame body 110 or to the rear of the frame body 110 along the cylinder of the frame body 110;
contains,
When the head member 320 presses the rear of the needle body 210 forward by moving the push rod 300 forward, the fixation of the needle body 210 and the needle sphere 120 is released, The needle part 200 is removed and separated and discharged,
In the frame part 100,
A locking film 140 formed inside the front side of the frame body 110 and a stopping film through hole 150 formed at the centrifugal end of the hanging film 140 are included,
The push rod part 300,
When force is applied toward the front of the frame body 110 to the push rod 300 in a state in which the frame body 110 is slid to the front end, the head member 320 of the push rod 300 pushes the needle part 200, so that the needle part 200 deforms, cuts or damages the locking film 140 of the frame part 100 in the needle hole 120 of the frame part 100. to be removed,
The head member 320,
The injection device for preventing reuse, characterized in that the needle part 200 is configured to be caught and fixed to the deformed, incised or damaged locking film 140 while being removed.
delete According to claim 1,
In the needle part 200,
The hooking body 240 extending from the rear end of the needle body 210 and configured to pass through the hooking film through hole 150 and the hooking film 140 formed on the rear end of the hooking body 240. ) It includes a holding member 250 configured to be caught,
The head member 320,
When force is applied toward the front of the frame body 110 to the push rod 300 in a state in which the push rod 300 slides toward the front end of the frame body 110, the holding member 250 An injection device for preventing reuse, characterized in that configured to release the jamming.
According to claim 3,
In the head member 320,
The removal body 321 extending from the front end of the push rod body 310 and the push rod unit 300 formed at the front end of the removal body 321 slide toward the front end of the frame body 110 When force is applied to the push rod 300 in the forward direction of the frame body 110 in the state of being reused, characterized in that a removal unit 322 configured to release the locking of the locking member 250 is included. anti-injection device.
According to claim 4,
The holding member 250,
It is formed in a shape gradually inclined forward from the centrifugal end of the needle body 210 toward the outer circumferential direction,
The stripping unit 322,
The front end is formed in a concave shape, and force is applied toward the front of the frame body 110 to the push rod 300 in a state in which the push rod 300 slides toward the front end of the frame body 110 In case of re-use prevention, the injection device characterized in that the locking member 250 is crimped toward the center of the needle body 210 according to the distal shape of the separation unit 322.
According to claim 1,
In the frame part 100,
The injection device for preventing reuse, characterized in that one or a plurality of cutting grooves 160 formed in the outer direction of the locking film 140 from the locking film through hole 150 are included.
According to claim 1,
In the frame part 100,
Characterized in that a breakage groove 170 formed between the locking membrane through-hole 150 and the outer circumference of the locking membrane 140 and configured to be formed along the circumferential direction of the locking membrane 140 is included. injection device for preventing reuse.
According to claim 1,
In the frame part 100,
An extension frame 180 extending forward from the needle hole 120 and configured to surround the outer circumference of the needle body 210 when the needle part 200 is coupled; and
Eccentric protrusions 190 protruding from the inner circumference of the extension frame 180;
An injection device for preventing reuse, characterized in that it is included.
According to claim 8,
In the needle part 200,
A plurality of anti-rotation protrusions 260 formed on the outer circumference of the needle body 210 at regular intervals along the circumferential direction of the needle body 210 so that anti-rotation grooves 270 are formed at intervals between them is included,
The needle part 200,
By being configured so that the eccentric projection 190 is inserted into one or more of the plurality of anti-rotation grooves 270 formed by the plurality of anti-rotation protrusions 260, it is configured not to rotate at an angle exceeding 180 °. An injection device for preventing reuse.
According to claim 1,
In the push rod part 300,
A gasket 330 provided in front of the push rod body 310 and configured to surround the head member 320 is included,
In the head member 320,
A first locking jaw 323 protruding along the outer circumference of the front side of the head member 320 and engaging the inside front of the gasket 330 and protruding along the outer circumference of the rear side of the head member 320 It includes a second holding jaw 324 that is caught on the inside rear of the gasket 330,
In the push rod body 310,
The first body member 311 having a cross section formed in a '+' shape and extending from the front of the first body member 311 and having a '+' cross section, the first body member 311 A second body member 312 formed in a smaller size and configured to support the gasket 330 by being in contact with the rear side of the gasket 330 at the front end is included.

Images