KR20240019931A - Safety syringe of vacuum blood gathering type - Google Patents

Abstract

The present invention minimizes the risk of infection by preventing stabbing accidents by the front and rear needle parts after blood collection by having the front guard unit wrap around the front needle unit and the rear needle unit wrap around the rear needle unit after blood collection is completed, thus minimizing the reliability and stability. This is about a safety syringe with a vacuum blood collection method that can improve health and protect the environment.

Description

Safety syringe of vacuum blood gathering type}

The present invention relates to a safety syringe of a vacuum blood collection method. More specifically, after blood collection is completed, the front guard surrounds the front needle portion and the rear needle portion wraps the rear needle portion, so that after blood collection, the front needle portion and the rear needle portion This is about a safety syringe with a vacuum blood collection method that can minimize the risk of infection and protect the environment by preventing stabbing accidents.

Recently, as medical technology has developed, the technology for diagnosing various diseases through blood tests has also developed significantly, and blood tests are frequently required prior to diagnosing various diseases.

These blood tests include serum biochemistry tests, serum immune tests, and blood cell tests, and the diagnosis of diseases is mainly made through serology tests.

Serum needed for blood tests is obtained from blood, and this blood is obtained from the human body using a blood collection device.

In addition, blood collected from the human body is separated into gel-shaped blood clots and serum made of a mixture of blood cells and fibrin by a centrifuge, and the examiner separates only the serum from the blood and performs a test for disease diagnosis.

Typically, a patient's blood is collected to check the patient's health during a health checkup. A typical blood collection syringe is a piston-type syringe that pierces the needle into the patient's skin and then pulls the holder to collect the patient's blood.

Specifically, blood collection is traditionally carried out by a nurse or clinical pathologist collecting blood from a patient using a general syringe, then putting the blood in the syringe into a blood collection container in the form of, for example, a cylindrical flask, capping it, and storing it for later testing.

However, in this method, the process of putting blood collected with a syringe into a blood collection container is very cumbersome and inconvenient, and there is a problem that components in the blood may be destroyed by the pressure of the blood collection syringe, and the amount of blood collected into the syringe is not controlled by nurses or clinical pathologists. It had to be checked frequently, and the amount of blood collected was also inaccurate.

Recently, a vacuum blood collection syringe was developed to solve the problems of collecting blood with a general syringe such as a piston-type syringe.

Figure 1 shows a conceptual diagram of the blood collection process using a safety syringe of a conventional vacuum blood collection method. With reference to Figure 1, the structure of the syringe and blood collection process of the conventional vacuum blood collection method will be described.

The assembly (1) coupled so that the needle (2) penetrates is coupled to the holder (7). The front of the needle (2) penetrates the patient's skin (8) and pierces the blood vessel.

Afterwards, the blood collection tube (5) is inserted into the holder (7) to combine the assay (1) and the blood collection tube (5), and at the same time, the rear end (3) of the needle penetrates the blood collection tube (5).

Accordingly, the blood 6 collected from the front of the needle 2 due to negative pressure is collected in the blood collection vessel 5, and blood can be collected. This type of vacuum blood collection syringe is being used frequently because the blood collection process is simpler than before.

However, although the syringe of the conventional vacuum blood collection method described above is easier to collect blood than the existing piston-type syringe, there are many problems in terms of safety as the front and rear of the needle are exposed after blood collection.

In other words, in the conventional vacuum blood collection syringe, the front and rear of the needle 2 are exposed to the outside during the process of discarding the vacuum blood collection syringe after blood collection is completed, exposing the needle to a blood collector such as a nurse, doctor, or clinical pathologist. There was a problem with frequent stabbing accidents occurring from the front or rear of the device.

These stabbing accidents are a very serious problem because the patient's blood remains in the front and back of the needle after blood collection rather than before, causing secondary infection through blood. In fact, there are frequent cases of secondary infection of blood collectors due to stabbing accidents after blood collection. occurred.

In addition, the vacuum blood collection syringe was disposed of with the needle exposed at both the front and the back, causing a problem in which not only the blood sampler but also the disposal worker could become infected secondary to a stabbing accident.

Moreover, the syringe of the conventional vacuum blood collection method cannot be reused because the holder is contaminated by the needle holding the patient's remaining blood as the needle and holder come into direct contact during the process of separating the holder and needle after blood collection is completed. There was a problem of wasting resources and polluting the environment.

Therefore, there is an urgent need to develop a safety syringe that can be used repeatedly by covering the front and back of the needle exposed after blood collection to prevent stabbing accidents and block direct contact with the holder.

Republic of Korea Registered Utility Model Publication No. 20-0254001 Republic of Korea Patent Registration No. 10-0868750 Republic of Korea Patent Registration No. 10-1860712 Republic of Korea Patent Publication No. 10-2019-0131245 Republic of Korea Patent Publication No. 10-2019-0131240 Republic of Korea Patent Publication No. 10-2007-0012791 Republic of Korea Patent Publication No. 10-2018-0059123 Republic of Korea Patent Publication No. 10-2021-0142267 Republic of Korea Utility Model Publication No. 20-1992-0000333

The present invention is to solve the above problems, and the purpose of the present invention is to extend the front guard portion to the front of the hub unit so that after blood collection is completed, it extends from the front of the hub unit toward the front of the front needle portion. It blocks the front of the needle unit from being exposed to the outside, and the rear guard part is extendably coupled to the rear of the hub unit, so that when the hub unit with the needle unit and guard unit combined is detached from the holder unit, it automatically moves to the rear of the hub unit. It extends towards the rear of the rear needle part in the opposite direction to the front guard part, easily and quickly automatically blocking the rear of the rear needle part from being exposed to the outside, thus preventing stabbing accidents that may occur after blood collection. By minimizing the risk of infection, the safety of blood drawers and waste handlers is maximized, satisfaction is improved, and direct contact between the needle unit and holder unit is blocked after blood collection is completed, allowing repeated use of the holder unit, thereby reducing plastic waste. The goal is to provide a vacuum blood collection type safety syringe that can protect the environment, reduce manufacturing and processing costs, increase sales and exports, and improve the stability and reliability of the vacuum blood collection type safety syringe.

In order to achieve the object of the present invention, the safety syringe of the vacuum blood collection method according to the present invention includes a needle unit having a front needle portion and a rear needle portion and extending in the longitudinal direction; A hub unit in which the front needle portion and the rear needle portion are penetratingly coupled; A guard unit including a front guard coupled to the front of the hub unit and a rear guard coupled to the rear of the hub unit; a holder unit to which the hub unit in which the needle unit and the guard unit are coupled is detachably coupled; and a cover unit detachably coupled to the hub unit to cover the needle unit, wherein after blood collection is completed, the front guard unit surrounds the front needle unit and the rear needle unit wraps the rear needle unit, thereby causing the front needle unit to close. It is possible to prevent stabbing accidents caused by the part and the rear needle part.

In addition, in another preferred embodiment of the vacuum blood collection type safety syringe according to the present invention, the front guard portion of the vacuum blood collection type safety syringe is extendably coupled to the front of the hub unit, and after blood collection is completed, the hub unit It extends from the front toward the front of the front needle unit to block the front of the front needle unit from being exposed to the outside, and the rear guard unit is extendably coupled to the rear of the hub unit, and the needle unit and the guard unit When the hub unit in a coupled state is detached from the holder unit, the rear of the hub unit is automatically extended toward the rear of the rear needle unit in the opposite direction to the front guard unit, exposing the rear of the rear needle unit to the outside. You can block it from happening.

In addition, in another preferred embodiment of the vacuum blood collection type safety syringe according to the present invention, the hub unit of the vacuum blood collection type safety syringe includes a base portion having a penetration portion into which the needle unit is inserted and coupled; A flange portion extending along the outer peripheral surface of the base portion; a stopper portion formed at the rear of the base portion to detachably couple the hub unit to the holder unit; A seating portion having a locking protrusion at the front end, extending along the longitudinal direction in front of the base portion, and being coupled to the rear of the front guard portion; And a receiving portion having a stepped portion at the rear end, extending along the longitudinal direction at the rear of the base portion and being coupled to the front of the rear guard portion, wherein the holder unit has a space portion therein and extends in the longitudinal direction. a holder portion; and an opening formed through the front of the holder portion.

In addition, in another preferred embodiment of the vacuum blood collection type safety syringe according to the present invention, the hub unit of the vacuum blood collection type safety syringe includes a guide portion extending along the longitudinal direction from the rear of the receiving portion; and a rib portion spaced apart at a predetermined angle in the circumferential direction along the front outer peripheral surface of the base portion and protruding from the front of the flange portion to the rear of the seating portion, wherein the cover unit accommodates the front needle portion therein. a cover portion having a cavity portion and extending in the longitudinal direction; and a groove portion extending from the rear of the cover portion toward the inside of the cover portion along the longitudinal direction into which the rib portion is inserted and coupled.

In addition, in another preferred embodiment of the vacuum blood collection type safety syringe according to the present invention, the front guard portion of the guard unit of the vacuum blood collection type safety syringe includes a bridge portion extending in the width direction; a first body portion including a first clamping portion and extending forward in the longitudinal direction from one side of the bridge portion; a second body portion having a second clamping portion complementary to the first clamping portion and extending longitudinally forward from the other side of the bridge portion; an extension portion having a separation prevention portion at the rear end and extending longitudinally rearward from the rear end of the bridge portion; a connection part fixedly connected through the separation prevention part with the front part inserted into the extension part, and fixedly connected through the locking protrusion part with the rear part inserted into the seating part; and a hollow hole formed to penetrate the interior of the bridge portion and the extension portion in the longitudinal direction so that the front needle portion is inserted and coupled to the front needle portion. The rear guard portion includes a channel portion extending in the width direction to correspond to the bridge portion; a first body portion having a first locking portion and extending rearward in the longitudinal direction from one side of the channel portion; a second body portion having a second locking portion complementary to the first locking portion and extending rearward in the longitudinal direction from the other side of the channel portion; an expansion portion having a blocking portion at the front end and extending longitudinally forward from the front end of the channel portion; a coupling part coupled through the step portion with the front part inserted into the receiving part, and fixedly coupled through the blocking part with the rear part inserted into the expansion part; and an insertion hole formed to penetrate the interior of the channel portion and the expansion portion in the longitudinal direction so that the rear needle portion is inserted and coupled to the rear needle portion.

In addition, in another preferred embodiment of the vacuum blood collection type safety syringe according to the present invention, the stopper portion of the vacuum blood collection type safety syringe includes a first protrusion formed to protrude in the width direction at the rear of the base portion; and a second protrusion formed to protrude in the width direction at the rear of the base portion to be spaced apart from the first protrusion at an angle of 180 degrees along the circumferential direction, wherein the opening is formed inside the front of the holder portion to be adjacent to the opening. holding part; and a multi-hole formed through the holding part, wherein the front needle part and the rear needle part are penetratedly coupled to the base part and the rear guard part is coupled to the receiving part. When the hub unit is rotated 45 degrees clockwise or counterclockwise with the needle part and the rear guard part inserted into the multi-hole, the holding part is snap-coupled with the first protrusion and the second protrusion, so that the hub unit It is fixedly coupled to the holder unit, and when the hub unit is rotated 45 degrees clockwise or counterclockwise while the hub unit is fixedly coupled to the holder unit, the holding part, the first protrusion, and the second protrusion The snap coupling is released and the hub unit can be separated from the holder unit.

In addition, in another preferred embodiment of the vacuum blood collection type safety syringe according to the present invention, the vacuum blood collection type safety syringe includes the front needle portion and the rear needle at the base when the hub unit is fixedly attached to the holder unit. In a state in which the rear guard part is coupled to the receiving part and the rear guard part is coupled to the receiving part, the rear part of the base part, the rear needle part, and the rear guard part are inserted into the multi-hole so that the hub unit and the holder unit are fixedly attached. The width direction diameter is larger than the width direction length of the rear guard portion before the first locking portion of the first body portion and the second locking portion of the second body portion are snap-coupled and locked, and after blood collection is completed, the front portion of the front needle portion is When the hub unit is detached from the holder unit in a state in which exposure to the outside is blocked by the front guard portion, the height direction diameter of the multi-hole is determined by the first locking portion of the first body portion and the second locking portion of the second body portion. It is formed to be larger than the width direction length of the rear guard portion after being locked by additional snap coupling, so that when the hub unit is detached from the holder unit, the coupling portion is automatically pressed by the multi-hole and extended to the rear of the rear needle portion. The first locking part and the second locking part may be snap-coupled.

In the safety syringe of the vacuum blood collection method according to the present invention, the front guard part is extendably coupled to the front of the hub unit, and after blood collection is completed, it is extended from the front of the hub unit toward the front of the front needle part, exposing the front of the front needle part to the outside. The rear guard is extendedly coupled to the rear of the hub unit, so that when the hub unit with the needle unit and guard unit combined is detached from the holder unit, it automatically moves in the opposite direction to the front guard from the rear of the hub unit. It extends toward the rear of the rear needle section to easily and quickly automatically block the rear of the rear needle section from being exposed to the outside, maximizing stability and reliability by preventing stabbing accidents that may occur after blood collection, and the fast and fast mechanism. This has the effect of increasing convenience of use and reducing blood collection time.

In addition, the safety syringe of the vacuum blood collection method according to the present invention minimizes the risk of infection due to stabbing accidents by preventing stabbing accidents in advance, thereby maximizing the safety of blood collectors such as nurses, doctors, or clinical pathologists or waste processors, and medical workers. It has the effect of ensuring public health and hygiene by preventing secondary infection of waste disposers and improving the satisfaction of medical workers and waste disposers.

Moreover, the safety syringe of the vacuum blood collection method according to the present invention surrounds the front needle part and the rear needle part with the front guard part and the rear guard part to fundamentally block the front needle part and the rear needle part from direct contact with the holder unit, thereby fundamentally blocking the collected blood. By preventing contamination of the holder unit, repeated use of the holder unit is possible, which has the effect of promoting environmental protection by reducing plastic waste.

In addition, the safety syringe of the vacuum blood collection method according to the present invention has a connection part of the front guard part and a coupling part of the rear guard part formed in the form of a coil spring, is easily coupled to the hub unit, and the front needle part undergoes plastic deformation beyond the elastic force of the coil spring. Through the simple structure, manufacturing method, and combination method that surrounds the and rear needle parts, the manufacturing cost and manufacturing time are reduced, and the syringe processing cost is also reduced, which has the effect of increasing sales and exports of vacuum blood collection type safety syringes.

Figure 1 shows a conceptual diagram of the blood collection process using a safety syringe of a conventional vacuum blood collection method.
Figure 2 shows a conceptual diagram of a safety syringe for vacuum blood collection according to the present invention.
Figure 3 shows the hub unit in a state before the blood collection unit is combined in the safety syringe of the vacuum blood collection method according to the present invention, in a state in which the cover unit is coupled to the hub unit and the needle unit, and in a state in which the needle unit and the guard unit are coupled to the hub unit. It shows a conceptual diagram of the state just before the and holder units are combined.
Figure 4 shows a conceptual diagram of the vacuum blood collection type safety syringe according to the present invention in a state where the needle unit and the guard unit are combined and the hub unit is connected to the holder unit before the blood collection unit is combined.
Figure 5 shows a perspective view of the hub unit in a state in which the needle unit and the guard unit of the vacuum blood collection safety syringe according to the present invention are combined.
Figure 6 shows a plan view of the hub unit in a state in which the needle unit and the guard unit of the vacuum blood collection safety syringe according to the present invention are combined.
FIG. 7 shows a cross-sectional view taken along line AA of FIG. 4.
Figure 8 is a conceptual diagram showing a state in which the front guard part moves after blood collection is completed with the hub unit in which the needle unit and the guard unit are coupled to the holder unit in the vacuum blood collection safety syringe according to the present invention.
Figure 9 is a conceptual diagram of the vacuum blood collection type safety syringe according to the present invention, in which the hub unit in which the needle unit and the guard unit are combined are coupled to the holder unit, and the front guard part is moved forward to the maximum after blood collection is completed. represents.
Figure 10 shows a conceptual diagram just before the hub unit is separated from the holder unit with the front guard moved forward to the maximum and locked in a locked state after blood collection is completed in the vacuum blood collection type safety syringe according to the present invention.
FIG. 11 shows a cross-sectional view taken along line BB in FIG. 10.
Figure 12 is a conceptual diagram showing a state in which, after blood collection is completed in the vacuum blood collection type safety syringe according to the present invention, the front guard moves forward to the maximum and is locked, and the hub unit is separated from the holder unit, and the rear guard is automatically locked and separated. indicates.

Hereinafter, the safety syringe for the vacuum blood collection method according to an embodiment of the present invention will be described in detail with reference to drawings. The embodiments introduced below are provided as examples so that the idea of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. Also, in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals refer to like elements throughout the specification.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. These embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is provided. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of explanation.

The terminology used herein is for describing embodiments and is therefore not intended to limit the invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprise” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements. or does not rule out addition.

Figure 2 shows a conceptual diagram of a safety syringe for vacuum blood collection according to the present invention. Figure 3 shows the hub unit in a state before the blood collection unit is combined in the safety syringe of the vacuum blood collection method according to the present invention, in a state in which the cover unit is coupled to the hub unit and the needle unit, and in a state in which the needle unit and the guard unit are coupled to the hub unit. It shows a conceptual diagram of the state just before the and holder units are combined. Figure 4 shows a conceptual diagram of the vacuum blood collection type safety syringe according to the present invention in a state where the needle unit and the guard unit are combined and the hub unit is connected to the holder unit before the blood collection unit is combined. Figure 5 shows a perspective view of the hub unit in a state in which the needle unit and the guard unit of the vacuum blood collection safety syringe according to the present invention are combined. Figure 6 shows a plan view of the hub unit in a state in which the needle unit and the guard unit of the vacuum blood collection safety syringe according to the present invention are combined. Figure 7 shows a cross-sectional view taken along line A-A in Figure 4. Figure 8 is a conceptual diagram showing a state in which the front guard part moves after blood collection is completed with the hub unit in which the needle unit and the guard unit are coupled to the holder unit in the vacuum blood collection safety syringe according to the present invention. Figure 9 is a conceptual diagram of the vacuum blood collection type safety syringe according to the present invention, in which the hub unit in which the needle unit and the guard unit are combined are coupled to the holder unit, and the front guard part is moved forward to the maximum after blood collection is completed. represents. Figure 10 shows a conceptual diagram just before the hub unit is separated from the holder unit with the front guard moved forward to the maximum and locked in a locked state after blood collection is completed in the vacuum blood collection type safety syringe according to the present invention. FIG. 11 shows a cross-sectional view taken along line B-B in FIG. 10. Figure 12 is a conceptual diagram showing a state in which, after blood collection is completed in the vacuum blood collection type safety syringe according to the present invention, the front guard moves forward to the maximum and is locked, and the hub unit is separated from the holder unit, and the rear guard is automatically locked and separated. indicates.

The definitions of terms used below are as follows. “Longitudinal direction” refers to the horizontal direction in the same member, that is, the It means the axial direction, and the “height direction” means the vertical direction in the same member while being perpendicular to the longitudinal direction and the width direction, that is, the Z-axis direction in FIGS. 2 to 12. In addition, the front refers to the direction toward the left in the “longitudinal direction”, that is, the direction toward the left of the It refers to the direction toward the right of the X-axis. Additionally, the front end refers to the left end in the “longitudinal direction,” and the rear end refers to the right end in the “longitudinal direction.” Additionally, the top refers to the upper end in the “height direction,” and the bottom refers to the lower end in the “height direction.” In addition, “inside (inside)” refers to the side relatively close to the center of the same member, that is, the inside of each component in Figures 2 to 12, and “outside (outside)” refers to the side relatively far from the center of the same member, i.e. In FIGS. 2 to 12, it means the outside.

The safety syringe 10 of the vacuum blood collection method according to the present invention will be described with reference to FIGS. 2 to 12. As shown in Figure 2, the safety syringe 10 of the vacuum blood collection method according to the present invention includes a needle unit 100, a hub unit 200, a guard unit 300, a holder unit 500, and a cover unit 500. , and a blood collection unit 600.

The needle unit 100 includes a front needle portion 110 and a rear needle portion 120 and extends in the longitudinal direction. That is, the needle unit 100 is formed to extend in the longitudinal direction and penetrates the through portion 211 of the base portion 210 of the hub unit 200 to be coupled to the hub unit, and the needle unit penetrates the through portion of the base portion to the hub unit. When coupled to the unit, it is divided into a front needle part in the longitudinal direction and a rear needle part in the longitudinal direction, based on the flange part 220 of the hub unit.

The front needle part pierces the patient's skin to collect blood, and the rear needle part is combined with a blood collection unit to be described later, so that the blood flowing in through the front needle part by negative pressure passes through the rear needle part and is collected into the blood collection unit.

Preferably, the front needle portion and the rear needle portion are integrally formed to communicate with each other to reduce manufacturing cost and time and provide durability so as not to break in the middle. Additionally, the front end of the front needle portion and the rear end of the rear needle portion are formed sharply to penetrate the patient's skin and the protective film of the blood collection unit, respectively.

The hub unit 200 has a front needle portion and a rear needle portion coupled through penetration.

The guard unit 300 includes a front guard portion 310 coupled to the front of the hub unit and a rear guard portion 320 coupled to the rear of the hub unit.

The holder unit 400 is a hub unit in which a needle unit and a guard unit are combined in a detachable manner.

The cover unit 500 is detachably coupled to the hub unit and covers the needle unit. That is, as shown in FIGS. 1 and 2, the rear of the cover unit 500 is combined with the front of the hub unit to cover the front needle portion to prevent the front needle portion from being contaminated in the air before blood is collected with the front needle portion.

The blood collection unit 600 has a needle unit penetratingly coupled to the hub unit, and the hub unit is coupled to the holder unit, penetrating the patient's skin with the front needle part, and the front of the blood collection unit is connected to the space of the holder part of the holder unit. It is inserted so that the rear of the rear needle part penetrates the front of the blood collection unit to store the blood collected from the patient.

Preferably, the front of the blood collection unit is made of a rubber material to prevent the collected blood from leaking out.

In addition, a plurality of blood collection units are provided, so that sufficient blood collection and storage can be easily performed with only one invasion of the patient's skin, depending on the purpose of blood collection.

In this way, the safety syringe of the vacuum blood collection method according to the present invention can prevent stabbing accidents caused by the front and rear needle parts as the front guard part wraps the front needle part and the rear needle part wraps the rear needle part after blood collection is completed.

Specifically, the front guard part of the guard unit of the safety syringe of the vacuum blood collection method according to the present invention is extendably coupled to the front of the hub unit, and after blood collection is completed, it is extended from the front of the hub unit toward the front of the front needle part to connect the front needle. It blocks the front of the unit from being exposed to the outside, and the rear guard part of the guard unit is expandably coupled to the rear of the hub unit, and when the hub unit with the needle unit and guard unit combined is detached from the holder unit, the hub unit automatically It extends from the rear of the unit toward the rear of the rear needle portion in the opposite direction to the front guard portion, thereby preventing the rear of the rear needle portion from being exposed to the outside.

Therefore, the safety syringe of the vacuum blood collection method according to the present invention prevents stabbing accidents in advance, increases convenience of use through a quick and fast mechanism, maximizes the convenience of patients and blood collectors by reducing blood collection time, and prevents stabbing accidents in advance. This minimizes the risk of infection due to stabbing accidents, maximizes the safety of blood collectors such as nurses, doctors, and clinical pathologists, and waste disposers, prevents secondary infection of medical workers and waste disposers, ensures public health and hygiene, and protects medical workers. The satisfaction of waste disposers can be improved.

As shown in Figures 2 to 12, the hub unit 200 of the vacuum blood collection type safety syringe 10 according to the present invention includes a base part 210, a flange part 220, a stopper part 230, and a seating part. It includes (240), a receiving portion (250), a guard portion (260), and a rib portion (270).

The base portion 210 has a penetrating portion 211 through which a needle unit is inserted and coupled therein and extends in the longitudinal direction. The base portion forms the outer shape of the hub unit and is generally formed in a cylindrical shape with a predetermined length and diameter.

The flange portion 220 extends along the outer peripheral surface of the base portion. That is, when the base part passes through the opening of the holder unit, which will be described later, and is coupled to the holder unit, the flange part performs the function of blocking the hub unit from being caught in the opening and being drawn further inward.

The stopper portion 230 is formed at the rear of the base portion to detachably couple the hub unit to the holder unit.

That is, as shown in FIGS. 1 to 12, the stopper portion 230 has a first protrusion 231 protruding in the width direction at the rear of the base portion and the base so as to be spaced apart from the first protrusion at an angle of 180 degrees along the circumferential direction. A second protrusion 232 is provided at the rear of the unit and protrudes in the width direction.

The seating portion 240 has a locking protrusion 241 at the front end, is formed to extend along the longitudinal direction at the front of the base portion, and is coupled to the rear of the front guard portion. That is, the seating portion is formed to extend forward along the longitudinal direction in front of the base portion, and when the rear of the connection portion of the front guard is inserted into the seating portion, the connecting portion is extended by preventing the connection portion from being separated by the locking protrusion formed at the front end of the seating portion. Manufacturing costs and manufacturing time can be reduced by simply and quickly assembling the parts and mounting parts.

The receiving portion 250 has a step portion 251 at the rear end, is formed to extend along the longitudinal direction at the rear of the base portion, and is coupled to the front of the rear guard portion. That is, the receiving portion is formed to extend rearward in the longitudinal direction opposite to the seating portion at the rear of the base portion, and when the front of the engaging portion of the rear guard portion is inserted into the receiving portion, the stepped portion formed at the rear end of the receiving portion prevents the engaging portion from being separated. As a result, manufacturing costs and manufacturing time can be reduced by simply and quickly assembling the coupling part into the expansion part and the receiving part.

The guide portion 260 extends rearward along the longitudinal direction from the rear of the receiving portion.

The rib portion 270 is spaced apart at a predetermined angle in the circumferential direction along the front outer peripheral surface of the base portion and protrudes from the front of the flange portion to the rear of the seating portion. That is, four rib portions are spaced apart in the circumferential direction along the front outer peripheral surface of the base portion, preferably at a 90-degree angle, and are formed to protrude from the front of the flange portion to the rear of the seating portion, so that when the cover unit and the hub unit are combined, the groove portion of the cover unit is formed. The rib part is inserted and combined to facilitate the combination and separation of the cover unit and the hub unit, thereby improving the convenience of the blood sampler, reducing manufacturing cost and manufacturing time, promoting miniaturization, and ensuring the durability of the hub unit, so that the hub unit and needle can be easily connected. By preventing damage to the unit and guard unit, the stability and reliability of the vacuum blood collection type safety syringe can be improved.

As shown in FIGS. 2 to 12, the holder unit 400 of the vacuum blood collection safety syringe 10 according to the present invention includes a holder portion 410 and an opening portion 420.

The holder portion 410 has a space portion 411 therein and extends in the longitudinal direction. That is, the holder portion has a space into which the blood collection holder can be inserted, extends in the longitudinal direction, and forms the overall appearance of the holder unit.

The opening 420 is formed through the front of the holder part. That is, the opening is formed through the front of the holder part so that the hub unit can be inserted and coupled to the holder unit, and is provided with a holding part 421 and a multi-hole 422.

The holding part 421 of the opening is formed inside the front of the holder part so as to be adjacent to the opening.

Multi-holes 422 are formed through the holding part.

The safety syringe of the vacuum blood collection method according to the present invention has the front and rear needle parts penetratingly coupled to the base and the rear guard part coupled to the receiving part, and the rear and rear needle parts and rear guard parts of the base are inserted into the multi-hole. When the hub unit is rotated 45 degrees clockwise or counterclockwise, the holding portion is snap-coupled with the first protrusion and the second protrusion, so that the hub unit is easily and quickly fixedly coupled to the holder unit.

In addition, in the safety syringe of the vacuum blood collection method according to the present invention, when the hub unit is fixedly coupled to the holder unit and the hub unit is rotated 45 degrees clockwise or counterclockwise, the holding unit, the first protrusion, and the second protrusion are separated. The snap connection is released, allowing the hub unit to be easily and quickly separated from the holder unit.

In this way, the hub unit and holder unit can be easily attached and detached by the stopper part, the holding part of the opening, and the multi-hole, thereby promoting the convenience of the blood sampler, minimizing the patient's blood collection time, maximizing the patient's stability and convenience, and reducing manufacturing costs. It can reduce manufacturing time and promote miniaturization.

As shown in Figures 2 to 12, the cover unit 500 of the vacuum blood collection type safety syringe 10 according to the present invention includes a cover part 510 and a groove part 520.

The cover part 510 has a cavity 511 inside which the front needle part is accommodated and extends in the longitudinal direction. That is, the cover portion has a cavity inside to accommodate the front needle portion and extends in the longitudinal direction to form the outer shape of the cover unit.

The groove portion 520 extends from the rear of the cover portion to the inside of the cover portion along the longitudinal direction, and the rib portion is inserted and coupled thereto.

In other words, when the cover unit is coupled to the hub unit, the rib portion is inserted into the groove to prevent the cover unit from being separated from the hub unit, making it easy to separate, thereby improving the convenience of the blood sampler and facilitating the use of the needle unit. You can maintain perfect hygiene before.

As shown in Figures 2 to 12, the front guard part 310 of the guard unit 300 of the vacuum blood collection type safety syringe 10 according to the present invention includes a bridge part 311 and a first body part 312. , it includes a second body portion 314, an extension portion 316, a connection portion 318, and a hollow hole 319.

The bridge portion 311 extends in the width direction.

The first body portion 312 has a first clamping portion 313 formed in front of the first body portion and extends forward in the longitudinal direction from one side of the bridge portion.

The second body portion 314 has a second clamping portion 315 formed in front of the second body portion and complementary to the first clamping portion, and extends forward in the longitudinal direction from the other side of the bridge portion. Preferably, the first clamping part and the second clamping part are snap-coupled to achieve miniaturization and convenience of the blood sampler through simple combination, reduce blood sampling time, and ensure that the front of the front needle portion is exposed to the outside after blood sampling is completed. By quickly blocking the blood, it is possible to prevent stabbing accidents to blood collectors and waste disposers.

The extension portion 316 has a separation prevention portion 317 at the rear end of the extension portion, and extends longitudinally rearward from the rear end of the bridge portion.

The connection portion 318 is fixedly connected through the separation prevention portion with the front of the connection portion inserted into the extension portion, and the rear portion of the connection portion is fixedly connected through the locking jaw portion with the rear portion inserted into the seating portion.

The hollow hole 319 is formed to penetrate the interior of the bridge portion and the extension portion in the longitudinal direction so that the front needle portion can be inserted and coupled.

As shown in Figures 2 to 12, the rear guard part 320 of the guard unit 300 of the vacuum blood collection type safety syringe 10 according to the present invention includes a channel part 321 and a first body part 322. , a second body portion 324, an expansion portion 326, a coupling portion 328, and an insertion hole 319.

The channel portion 321 is formed to extend in the width direction to correspond to the bridge portion.

The first body portion 322 has a first locking portion 323 formed at the rear of the first body portion and extends longitudinally rearward from one side of the channel portion.

The second body portion 324 has a second locking portion 325 formed at the rear of the second body portion and complementary to the first locking portion, and extends rearward in the longitudinal direction from the other side of the channel portion. Preferably, the first locking part and the second locking finger part are snap-connected, thereby achieving miniaturization and convenience of the blood sampler through simple combination, reducing blood collection time, and allowing the needle unit and guard unit to be combined after blood collection is completed. When the hub unit is detached from the holder unit, it automatically quickly blocks the rear of the rear needle portion from being exposed to the outside, thereby preventing stabbing accidents to the blood sampler and waste disposer.

The expansion portion 326 has a blocking portion 327 at the front end of the expansion portion, and extends forward in the longitudinal direction from the front end of the channel portion.

The coupling portion 329 is coupled through the step portion with the front of the coupling portion inserted into the receiving portion, and is fixedly coupled through the blocking portion with the rear portion of the coupling portion inserted into the expansion portion.

The insertion hole 329 is formed by penetrating the interior of the channel portion and the expansion portion in the longitudinal direction to insert and couple the rear needle portion.

In addition, as shown in FIGS. 4, 6, 10, 11, and 12, the vacuum blood collection type safety syringe according to the present invention has a front needle portion and a front needle portion at the base when the hub unit is fixedly attached to the holder unit. With the rear needle part penetratingly coupled and the rear guard part coupled to the receiving part, the rear of the base part, the rear needle part, and the rear guard part are inserted into the multi-hole so that the hub unit and the holder unit can be fixedly attached. The width direction diameter (D1) of the multi-hole is The first locking part of the first body part and the second locking part of the second body part are snap-coupled and formed to be larger than the width direction length (V1) of the rear guard part before being locked.

In addition, as shown in FIGS. 4, 6, 10, 11, and 12, in the vacuum blood collection type safety syringe according to the present invention, the front of the front needle portion is exposed to the outside by the front guard portion after blood collection is completed. When detaching the hub unit from the holder unit in this blocked state, the height direction diameter (D2) of the multi-hole is the width direction of the rear guard after the first locking part of the first body and the second locking part of the second body are snap-coupled and locked. It is formed to be larger than the length V2, so that when the hub unit is detached from the holder unit, the coupling portion is automatically pressed by the multi-hole and extended to the rear of the rear needle portion, and the first locking portion and the second locking portion are snap-coupled.

As shown in Figure 8, preferably, the longitudinal length (L1) of the first body part of the front needle part is formed to be longer than the longitudinal length (L2) of the second main body part, and, as shown in Figures 6 and 10, the connection part is an extension part. The longitudinal length (K1) and the longitudinal length (L1) of the first body after being extended forward in the longitudinal direction in a state installed between the and the seating portion and snap-coupled with the first clamping portion of the first body and the second clamping portion of the second body. ) is formed to be longer than the longitudinal length (H1) of the front needle portion.

If the longitudinal length (L1) of the first body part of the front needle part is not formed to be longer than the longitudinal length (L2) of the second main body part, the front needle part penetrates the bridge part and the extension part through the hollow hole of the front guard part to the front. There is a problem in that the front of the front needle portion cannot be maintained exposed to the outside while the front guard portion is connected to the seating portion through the connection portion in the inserted state.

If the connection part is installed between the extension part and the seating part and is extended forward in the longitudinal direction and the first clamping part of the first body part and the second clamping part of the second main body part are snap-coupled, the longitudinal length K1 and the first body part If the combined length of the longitudinal length (L1) of the front needle part is shorter than the longitudinal length (H1) of the front needle part, the front of the front needle part is external after the first clamping part of the first body part and the second clamping part of the second main body part are snapped together. There is a problem where exposure cannot be blocked.

In this way, the connection part is formed of a coil spring, penetrates the bridge part and the extension part through the hollow hole of the front guard part, and the front needle part is inserted forward, and the front guard part is connected to the seating part through the connection part, and the front of the front needle part is external. It maintains the exposed state, and after the blood collection is completed, it is extended from the front of the seating portion toward the front of the front needle portion to block the front of the front needle portion from being exposed to the outside.

In addition, as shown in Figures 6 and 10, a connection part is installed between the extension part and the seating part, so that the longitudinal length K3 before the first clamping part of the first body part and the second clamping part of the second main body part are snap-coupled is the first clamping part. It is formed to be smaller than the longitudinal length (K1) after snap coupling of the first clamping part of the main body and the second clamping part of the second main body.

As shown in FIG. 8, preferably, the longitudinal length (S1) of the first body portion of the rear needle portion is formed to be longer than the longitudinal length (S2) of the second body portion, and as shown in FIGS. 6 and 12, the coupling portion is an extension portion. The longitudinal length (K2) and the longitudinal length (S1) of the first body portion are extended rearward in the longitudinal direction in a state installed between the first body portion and the receiving portion and are snap-coupled with the first locking portion of the first body portion and the second locking portion of the second body portion. ) is formed to be longer than the longitudinal length (H2) of the rear needle portion.

If the longitudinal length (S1) of the first body part of the rear needle part is not formed to be longer than the longitudinal length (S2) of the second body part, the rear needle part penetrates the channel part and the expansion part through the rear guard part insertion hole and moves to the rear. There is a problem in that the rear of the rear needle portion cannot be maintained exposed to the outside while the rear guard portion is coupled to the receiving portion through the coupling portion in the inserted state.

If the coupling portion is installed between the expansion portion and the receiving portion and is extended rearward in the longitudinal direction and the first locking portion of the first body portion and the second locking portion of the second body portion are snap-coupled, the longitudinal length (K2) and the first body portion If the total length of the longitudinal length (S1) of the rear needle part is shorter than the longitudinal length (H2) of the rear needle part, the hub unit is automatically connected when the hub unit with the needle unit and guard unit combined is detached from the holder unit after blood collection is completed. At the rear of the unit, the coupling portion of the rear guard portion is extended to face the rear of the rear needle portion in the opposite direction to the front guard portion, and the first locking portion of the first body portion and the second locking portion of the second body portion are snap-connected to the rear of the rear needle portion. There is a problem that it is not possible to block exposure to the outside.

In this way, before blood collection is completed and before separating the hub unit and the holder unit, the coupling portion is formed of a coil spring, penetrates the channel portion and the expansion portion through the insertion hole of the rear guard portion, and connects the coupling portion with the rear needle portion inserted backward. With the rear guard part combined with the receiving part, the rear of the rear needle part remains exposed to the outside, and after blood collection is completed, the hub unit with the needle unit and guard unit combined is automatically detached from the holder unit. At the rear of the hub unit, the coupling portion of the rear guard portion is extended to face the rear of the rear needle portion in the opposite direction to the front guard portion, and the first locking portion of the first body portion and the second locking portion of the second body portion are snap-connected to the rear of the rear needle portion. Block this from being exposed to the outside.

In addition, as shown in FIGS. 6 and 12, a coupling portion is installed between the expansion portion and the receiving portion, so that the longitudinal length K4 before the first locking portion of the first body portion and the second locking portion of the second body portion are snap-coupled is the first locking portion. It is formed to be smaller than the longitudinal length (K2) after snap coupling of the first locking part of the body and the second locking part of the second body.

The operating principle of the vacuum blood collection safety syringe according to the present invention will be described with reference to FIGS. 2 to 12.

As shown in Figure 2, the needle unit is primarily coupled to the hub unit, and the guard unit is coupled to the needle unit, and then the cover unit is coupled to the needle unit and distributed. The phlebotomist separates the cover unit from the needle unit to collect blood. At this time, as described above, the groove portion of the cover unit and the rib portion of the hub unit are disconnected, allowing the cover unit to be easily separated.

With the cover unit removed, secure the hub unit with the needle unit and guard unit combined to the holder unit. That is, when the base part of the hub unit is inserted into the opening and the hub unit is rotated 45 degrees clockwise or counterclockwise, the first and second protrusions of the stopper part are snapped into contact with the holder part and the hub unit is fixed to the holder unit. .

At this time, the width direction diameter of the multi-hole of the opening is formed to be larger than the width direction diameter of the rear guard portion before the first locking portion of the first body portion and the second locking portion of the second body portion are snap-coupled and locked, so that the rear needle portion and the rear guard portion are formed. The hub unit and the holder unit are safely and quickly inserted into the holder unit and then fixedly coupled.

In addition, as described above, the longitudinal length of the first main body of the front guard is formed to be larger than the longitudinal length of the second main body, and the connection portion is fixedly disposed in an expanded state between the seating portion and the extension portion to form the first main body of the front guard. In a state in which the front part and the second main body part are not locked, the front of the front needle part is stably maintained exposed to the outside.

Likewise, the longitudinal length of the second body portion of the rear guard is formed to be larger than the longitudinal length of the second body portion, and the coupling portion is fixedly disposed in an expanded and contracted state between the receiving portion and the expansion portion to connect the second body portion of the rear guard portion to the second body portion. When the body part is not locked, the rear part of the rear needle part is exposed to the outside and is stably maintained.

Accordingly, the front of the front needle part is exposed to the outside, and the rear of the rear needle part is exposed from the inside of the holder unit, so that blood is collected by piercing the patient's skin with the front needle part, and the rear needle part is combined with the blood collection unit to collect the patient's blood. will be stored.

When blood collection is completed, as described above in FIG. 10, the combined length of the extended length of the connection and the longitudinal length of the front guard is formed to be larger than the longitudinal length of the front needle portion, so when the front guard is pulled, the connection formed by the coil spring is fired. When the first body part and the second main body part are pressed in the changed state and the connection part is extended, the first clamping part and the second clamping part are snap-connected to easily and quickly prevent the front of the front needle part from being exposed to the outside.

As described above, the height-direction diameter of the multi-hole of the opening is formed to be larger than the width-direction length of the rear guard portion after the first locking portion of the first body portion and the second locking portion of the second body portion are snap-coupled and locked, so that the hub unit can be rotated clockwise or When the hub unit is detached from the holder unit by rotating it 45 degrees counterclockwise and pulling the hub unit forward in the longitudinal direction, the coupling part is automatically pressed by the multi-hole and extends to the rear of the rear needle part, and finally the first body part. As the and second body parts are pressed, the first locking part and the second locking part are snapped and locked, and the width direction length of the rear guard part after being locked becomes smaller than the height direction diameter of the multi-hole, so that the hub unit is easily separated from the holder unit.

That is, the rear guard unit moves rearward during the process of separating the hub unit from the holder unit to automatically quickly and easily block the rear of the rear needle unit from being exposed to the outside.

Therefore, in the safety syringe of the vacuum blood collection method according to the present invention, the front guard part is extendably coupled to the front of the hub unit, and after blood collection is completed, it is extended from the front of the hub unit toward the front of the front needle part, so that the front of the front needle part is external. The rear guard part is extendably coupled to the rear of the hub unit, so that when the hub unit with the needle unit and guard unit combined is detached from the holder unit, it automatically connects to the front guard part at the rear of the hub unit. It extends in the opposite direction toward the rear of the rear needle section, easily and quickly automatically blocking the rear side of the rear needle section from being exposed to the outside, thus maximizing stability and reliability by preventing stabbing accidents that may occur after blood collection. The quick mechanism increases convenience of use and reduces blood collection time.

In addition, the safety syringe of the vacuum blood collection method according to the present invention minimizes the risk of infection due to stabbing accidents by preventing stabbing accidents in advance, thereby maximizing the safety of blood collectors such as nurses, doctors, or clinical pathologists or waste processors, and medical workers. By preventing secondary infection of waste disposers, public health and hygiene can be guaranteed and the satisfaction of medical workers and waste disposers can be improved.

Moreover, the safety syringe of the vacuum blood collection method according to the present invention surrounds the front needle part and the rear needle part with the front guard part and the rear guard part to fundamentally block the front needle part and the rear needle part from directly contacting the holder unit, thereby fundamentally blocking the collected blood. By preventing contamination of the holder unit, repeated use of the holder unit is possible, which helps protect the environment by reducing plastic waste.

In addition, the safety syringe of the vacuum blood collection method according to the present invention has a connection part of the front guard part and a coupling part of the rear guard part formed in the form of a coil spring, is easily coupled to the hub unit, and the front needle part undergoes plastic deformation beyond the elastic force of the coil spring. Through the simple structure, manufacturing method, and combination method that surrounds the and rear needle parts, manufacturing cost and manufacturing time can be reduced, and syringe processing costs can also be reduced, thereby increasing sales and exports of vacuum blood collection type safety syringes.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those skilled in the art will understand the present invention as described in the patent claims to be described later. It will be understood that the present invention can be modified and changed in various ways without departing from the spirit and technical scope. Therefore, the technical scope of the present invention should not be limited to what is described in the detailed description of the specification, but should be defined by the scope of the patent claims.

10: Vacuum blood collection type safety syringe
100: Needle unit
200: hub unit
300: Guard unit
400: Holder unit
500: Cover unit
600: Blood collection unit

Claims (7)

A needle unit having a front needle portion and a rear needle portion and extending in the longitudinal direction;
A hub unit in which the front needle portion and the rear needle portion are penetratingly coupled;
A guard unit including a front guard coupled to the front of the hub unit and a rear guard coupled to the rear of the hub unit;
a holder unit to which the hub unit in which the needle unit and the guard unit are coupled is detachably coupled; and
It includes a cover unit that is detachably coupled to the hub unit and covers the needle unit,
A vacuum blood collection type safety syringe, characterized in that after blood collection is completed, the front guard portion surrounds the front needle portion and the rear needle portion wraps the rear needle portion to prevent stabbing accidents caused by the front needle portion and the rear needle portion. .
According to paragraph 1,
The front guard portion is extendably coupled to the front of the hub unit, and after blood collection is completed, extends from the front of the hub unit toward the front of the front needle portion to block the front of the front needle portion from being exposed to the outside,
The rear guard part is extendably coupled to the rear of the hub unit, and when the hub unit in a state in which the needle unit and the guard unit are combined is detached from the holder unit, the front guard is automatically connected to the rear of the hub unit. A safety syringe with a vacuum blood collection method, characterized in that it extends toward the rear of the rear needle portion in the opposite direction to block the rear of the rear needle portion from being exposed to the outside.
According to paragraph 2,
The hub unit is,
a base portion having a penetrating portion into which the needle unit is inserted and coupled;
A flange portion extending along the outer peripheral surface of the base portion;
a stopper portion formed at the rear of the base portion to detachably couple the hub unit to the holder unit;
A seating portion having a locking protrusion at the front end, extending along the longitudinal direction in front of the base portion, and being coupled to the rear of the front guard portion; and
It includes a receiving portion having a stepped portion at the rear end, extending along the longitudinal direction at the rear of the base portion and being coupled to the front of the rear guard portion,
The holder unit is,
A holder portion having a space therein and extending in the longitudinal direction; and
A vacuum blood collection type safety syringe comprising an opening formed through a front portion of the holder portion.
According to paragraph 3,
The hub unit is,
A guide portion extending along the longitudinal direction from the rear of the receiving portion; and
It further includes a rib portion spaced apart at a predetermined angle in the circumferential direction along the front outer peripheral surface of the base portion and protruding from the front of the flange portion to the rear of the seating portion,
The cover unit is,
a cover portion extending in the longitudinal direction and having a cavity inside which the front needle portion is accommodated; and
A vacuum blood collection type safety syringe comprising a groove portion extending from the rear of the cover portion to the inside of the cover portion along the longitudinal direction into which the rib portion is inserted and coupled.
According to clause 4,
The front guard part,
A bridge portion extending in the height direction;
a first body portion including a first clamping portion and extending forward in the longitudinal direction from one side of the bridge portion;
a second body portion having a second clamping portion complementary to the first clamping portion and extending longitudinally forward from the other side of the bridge portion;
an extension portion having a separation prevention portion at the rear end and extending longitudinally rearward from the rear end of the bridge portion;
a connection part fixedly connected through the separation prevention part with the front part inserted into the extension part, and fixedly connected through the locking protrusion part with the rear part inserted into the seating part; and
It includes a hollow hole formed to penetrate the interior of the bridge portion and the extension portion in the longitudinal direction so that the front needle portion is inserted and coupled,
The rear guard part,
a channel portion extending in the height direction to correspond to the bridge portion;
a first body portion having a first locking portion and extending rearward in the longitudinal direction from one side of the channel portion;
a second body portion having a second locking portion complementary to the first locking portion and extending rearward in the longitudinal direction from the other side of the channel portion;
an expansion portion having a blocking portion at the front end and extending longitudinally forward from the front end of the channel portion;
a coupling part coupled through the step portion with the front part inserted into the receiving part, and fixedly coupled through the blocking part with the rear part inserted into the expansion part; and
A vacuum blood collection type safety syringe comprising: an insertion hole formed by penetrating the inside of the channel portion and the expansion portion in the longitudinal direction so that the rear needle portion is inserted and coupled to the rear needle portion.
According to clause 5,
The stopper part is,
a first protrusion formed to protrude in the width direction at the rear of the base portion; and
It includes; a second protrusion formed to protrude in the width direction at the rear of the base portion so as to be spaced apart from the first protrusion at an angle of 180 degrees along the circumferential direction;
The opening is
a holding portion formed inside the front of the holder portion adjacent to the opening; and
It includes a multi-hole formed through the holding part,
With the front needle portion and the rear needle portion penetratingly coupled to the base portion and the rear guard portion coupled to the receiving portion, the rear portion of the base portion, the rear needle portion, and the rear guard portion are inserted into the multi-hole. When the hub unit is rotated clockwise or counterclockwise by 45 degrees, the holding portion is snap-coupled with the first protrusion and the second protrusion, so that the hub unit is fixedly coupled to the holder unit,
When the hub unit is rotated 45 degrees clockwise or counterclockwise while the hub unit is fixedly coupled to the holder unit, the snap coupling between the holding part, the first protrusion, and the second protrusion is released, thereby disconnecting the hub. A vacuum blood collection type safety syringe, characterized in that the unit can be separated from the holder unit.
According to clause 6,
When the hub unit is fixedly attached to the holder unit, the front needle portion and the rear needle portion are penetratingly coupled to the base portion and the rear guard portion is coupled to the receiving portion. The rear guard part is inserted into the multi-hole so that the hub unit and the holder unit are fixedly attached, so that the width direction diameter of the multi-hole is such that the first locking part of the first body part and the second locking part of the second body part are snap-coupled. It is formed to be larger than the width direction length of the rear guard before being locked,
After blood collection is completed, when the hub unit is detached from the holder unit in a state in which the front of the front needle portion is blocked from exposure to the outside by the front guard portion, the height direction diameter of the multi-hole is the first locking lock of the first body portion. The second locking portion of the second body portion and the second body portion are formed to be larger than the width direction length of the rear guard portion after being snap-coupled and locked, so that when the hub unit is detached from the holder unit, the coupling portion is automatically pressed by the multi-hole. A vacuum blood collection type safety syringe, characterized in that the first locking part and the second locking part are snap-coupled in a state in which the rear needle part is extended rearward.

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