KR102193995B1 - Injector and Blood collecting injection having stick injury prevention and reuse prevention fuction - Google Patents

Abstract

The present invention relates to a syringe having a function of preventing stick injury and preventing reuse, and more particularly, a cylinder-shaped body, a barrel head provided on the upper end of the body and protruding upward, and a barrel flange provided at the lower end. Barrel; A needle unit having a needle mounting portion to which the injection needle is coupled, a barrel mounting end inserted outside the barrel head, and a needle unit blade formed on an upper side of the body; A plunger inserted into the barrel and moved by a user to provide a suction force or a compressive force to inject a chemical liquid into the barrel or to discharge a chemical liquid stored in the barrel through the syringe needles; A cover combined shield having a tube-shaped body inserted outside the needle body and rotated vertically, an upper locking jaw provided on an upper side of the body inner surface, and a lower locking jaw provided on a lower side of the inner surface of the body; And a packing unit that is located inside the upper end of the cover and shield body so that the needle protrudes to the outside in a use mode and the marking fluid is stored therein. A syringe having a function of preventing stick injury and preventing reuse. will be.

Description

Injector and Blood collecting injection having stick injury prevention and reuse prevention fuction}

The present invention relates to a syringe having a stick injury prevention and reuse prevention function, and more particularly, a syringe having a stick injury prevention and reuse prevention function, and a backflow prevention and preset function while having a stick injury prevention and reuse prevention function. It relates to a body blood syringe to have.

In general, disposable syringes used in hospitals, etc., are coupled with a cylindrical barrel with an injection liquid discharge portion formed therein, and a plunger is fitted and coupled so that it can be moved inside along the longitudinal direction of the barrel, and when the plunger is moved, it is in tight contact with the barrel. It provides compression or suction power while moving.The needle body, in which the injection needles are combined, is detachably connected to the injection solution discharge part, and the injection needle protective cover is separated to protect the injection needle while completely enclosing it. Combined possible.

However, such conventional disposable syringes have a risk of foreign substances entering the body when inhaling chemicals in various ampoules including glass ampoules during their use. Accordingly, in order to prevent this risk, a filter or a filter with a filter attached thereto A type syringe is being proposed

In the case of a filter-attached syringe, a filter-attached syringe has a structure in which a filter having a filtering function is installed in the hub of the filter-attached syringe needle by separately providing a separate injection needle for suction.

However, the filter-type syringe according to the prior art has a structure that additionally installs and fastens a filter holding part and a filter fixing device to assemble and fix the filter mounted inside the hub. There was an inconvenience of having to reassemble the needle for intracorporeal injection.

In addition, the filter-type syringe according to the prior art was inconvenient in that it was necessary to maintain the respective disposal caps for the filter needle for inhaling the chemical solution and the needle for the human body. In the process of replacing the needle, the injection solution was There was considerable discomfort, such as the possibility of contact with the body part.

Figure 1a is a cross-sectional view of a conventional filter-type syringe 1 In addition, Figure 1b is an exploded cross-sectional view of the conventional filter-type syringe 1 In addition, as shown in Figures 1a and 1b, the outer cover (10), the internal filter housing (2) equipped with the filter (3), and the injection needle (20) are combined in order to separate insoluble substances from the chemical solution (4) through the filter attached to the filter housing (2). It can be seen that a filter-type syringe 1 is disclosed.

However, the filter-type injector 1 according to the prior art also has a problem in that the filter-type injector 1 according to the related art has a risk of stick injury that the user is stuck with the injection needle.

Therefore, in such a syringe, there is a need for a syringe having a function of preventing stabbing by an injection needle after use. In addition, these syringes are disposable, but there is a problem in that there is no way to check whether or not they are reused.

In addition, arterial blood gas analysis is a method of analyzing the amount of gas in arterial blood, but usually O2 and CO2 analysis. In the past, the van Slyke device was used to measure the O2, CO2 content, and oxygen saturation in arterial blood, and at the same time, Henderson-Hassel The partial pressure is calculated using the Henderson-Hasselbalch equation. Currently used, Po2 uses a Clark type electrode based on the polarography principle, and Po2 is Po2, and the pH is directly measured using a pH glass electrode. It is possible, and by using a computer inserted into the measuring device, several numerical values, such as the concentration of bicarbonate ions, were calculated simultaneously to obtain digital display and (printed) printout.

Arterial blood for measurement is collected from the upper arm, radial artery, and femoral artery with a syringe filled with heparin in the dead cavity, and a rubber stopper is placed on the tip of the needle to completely block and seal it from the air. Measurements should be made as quickly as possible When collecting, air bubbles should be excluded as soon as possible, and should be stored in a refrigerator if the measurement cannot be performed immediately. As such, arterial blood gas analysis can be easily performed, making it an essential test for pathological identification in all diseases. have.

Conventional blood collection syringes for arterial blood gas analysis include a needle unit equipped with a syringe needle, a barrel, and a plunger, like a conventional syringe. In addition, to prevent coagulation of the collected blood, an anticoagulant agent on one side of the inside of the barrel It can be provided. The plunger is first moved to the top to collect blood from the human body for arterial blood gas analysis. However, it can be seen that even when the plunger is moved to the uppermost side in a conventional blood collection syringe, gas remains inside the barrel head and inside the needle.

In addition, after the needle is inserted into the blood vessel, the plunger is moved downward to inflow blood into the barrel.However, there is a problem that bubbles are generated in the drawn blood because the gas remains at the head of the barrel before the introduction. It will exist.

In addition, the needle unit is detached and the stopper is mounted on the barrel head. In this process, blood in the barrel may leak and there is a problem in that blood is exposed to the outside air before the plug is installed. In the process of detaching the unit, there is a risk of being stabbed at the end of the needle.

Therefore, in such a blood collection syringe for arterial blood gas analysis, the inflow of air bubbles is blocked during the blood collection process, and it can be kept completely sealed without external exposure, it can prevent leakage of blood during the blood collection process, and has a function to prevent stick injury. There is a need to develop an improved blood collection syringe for arterial blood gas analysis.

Korean Registered Patent No. 1354451 Republic of Korea Patent Publication No. 2014-0001800 Korean Patent No. 1324555 Korean Patent Registration No.0758234

Accordingly, the present invention was conceived to solve the conventional problems as described above, and according to an embodiment of the present invention, after the injection of the injection solution is completed, the needle and the injection needle unit are placed inside the cover combined shield and detached. The packing unit and the tip protection member are located at the end of the needle at the head of the shield, so that stick injury caused by the injection needle can be completely prevented, and the marking fluid is stored in the patting unit at the stage of use. The purpose of this is to provide a syringe with a stick injury and a re-use prevention function that can prevent reuse because it is discharged so that it can be easily checked.

According to an embodiment of the present invention, in the blood collection syringe, the check valve unit is provided, so that the inflow of air bubbles is blocked during the blood collection process, and the completely sealed state can be maintained without external exposure, and leakage of blood during the blood collection process is prevented. It is possible to improve the precision and accuracy of arterial blood gas analysis, and the plunger gasket is equipped with a gas-liquid separation filter to collect blood as much as a set amount. After blood collection is completed, the needle and the injection needle unit are placed inside the cover combined shield. Desorption in the state of being positioned, and the packing unit at the head of the shield and the tip protection member at the end of the needle can completely prevent stick injury caused by the injection needle, and the marking fluid is stored in the patting unit. The purpose of this is to provide a blood collection syringe having a stick injury that can prevent reuse and a preset function that can prevent reuse and leakage because such marking fluid is discharged at the use stage.

Meanwhile, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those of ordinary skill in the technical field to which the present invention belongs from the following description. It will be understandable.

A first object of the present invention is a syringe, comprising: a barrel having a cylinder-shaped body, a barrel head protruding upward from an upper end of the body, and a barrel flange provided at a lower end; It has a needle body provided with a needle mounting portion to which the injection needle is coupled at the top and a barrel mounting end inserted to the outside of the barrel head at the bottom, and a needle unit wing is formed on the upper side of the needle body, and on the outside of the needle body A needle unit in which an insertion groove is formed; Inserted into the body of the barrel, moved by the user, and supplied a suction force or compression force according to the moving direction to induce a chemical solution into the body of the barrel, or the chemical solution stored in the body of the barrel into the injection needle A plunger to discharge through; It is in the form of a tube and is inserted outside the needle body, is moved up and down by the user, and has a body that protects or protrudes to the outside by placing the injection needle inside according to the moving direction, and an upper locking jaw is provided on the inner surface of the body It is, and a cover combined shield provided with a lower engaging jaw on the inner surface of the body; And in the use mode in which the cover is located inside the top of the main body of the cover and the main body is stored therein, and the main body is moved in a direction in which the injection needle protrudes, the injection needle penetrates and is compressed by the needle mounting portion and stored. It can be achieved by a syringe having a function of preventing stick injury and preventing reuse, characterized in that it comprises a packing unit for discharging the marking fluid.

In addition, a protruding end is provided at a lower side of the lower locking jaw from the inner surface of the main body of the cover combined shield, and the protruding end protrudes further inward than the length of the lower locking jaw protruding inward, and the inside of the body The tip protection member through which the injection needle penetrates is located, and in the portable mode in which the injection needle is located inside the main body, the lower engaging jaw is positioned to be inserted into the insertion groove to protect the injection needle, and in the use mode In a state where the upper locking jaw is inserted into the needle unit wing, the injection needle penetrates the packing unit, and in the safety mode after use, the user moves the cover combined shield to the upper side, and the needle is placed inside the body. It may be characterized in that the needle unit is separated from the barrel while the unit is embedded.

In the safe mode, an end of the injection needle may be located within the tip protection member. A storage unit in which the marking fluid is stored is formed inside the packing unit, and a cutout portion is provided between the storage unit and the lower end of the packing unit, which is cut when the packing unit is compressed, and the marking fluid stored in the storage unit is It is discharged when the part is cut.

A second object of the present invention is a syringe for collecting blood for arterial blood gas analysis, comprising a cylinder-shaped body, a barrel head provided at the upper end of the body and protruding upward, and a barrel flange provided at the lower end. Barrel; A check valve unit provided on one side of an upper end of the barrel and passing through a lower end of the injection needle; A needle unit having a needle mounting portion to which the injection needle is coupled, a barrel mounting end inserted outside the barrel head, and a needle unit blade formed on an upper end of the body; A plunger having a head at an upper end, inserted into the barrel, and moved by a user to provide a suction force or a compression force to inject a chemical liquid into the barrel or to discharge a chemical liquid stored in the barrel through the syringe needle; A gasket provided with a mounting groove in which the plunger head is mounted, and a gas-liquid separation filter at one side of the upper end; A cover combined shield having a tube-shaped body inserted outside the needle body and rotated vertically, an upper locking jaw provided on an upper side of the body inner surface, and a lower locking jaw provided on a lower side of the inner surface of the body; And a packing unit that is located inside the upper end of the cover and shield body so that the needle protrudes to the outside in a use mode and a marking fluid is stored therein; and controls the position of the plunger to collect a set amount of blood, and the needle It can be achieved as a blood collection syringe having a preset function and prevention of stick injury, characterized in that blood is sucked into the barrel while the plunger is automatically retracted when it is inserted into the blood vessel, and the gas in the barrel is discharged to the outside by the gas-liquid separation filter. have.

And a protruding end provided on a lower side of a lower engaging jaw formed on an inner surface of the main body of the cover combined shield, and protruding inwardly larger than a length protruding inward of the lower engaging jaw; And a tip protection member penetrating through the needle and positioned within the cover combined shield, and in the portable mode, the lower engaging jaw of the cover combined shield is positioned in a state inserted into the insertion groove to protect the injection needle. And, in the use mode, the upper engaging jaw of the cover combined shield is positioned in a state fitted to the needle unit blade, so that the needle is exposed through the packing unit. After use, in the safety mode, the cover combined shield is opened by the user. The needle unit is detached from the barrel by moving to the upper side so that the needle unit is embedded therein, and the blood flows into and is stored inside the lower panel of the check valve unit, and the needle unit is detached, and the After the needle unit is detached, leakage of blood stored in the barrel and inflow of external gas may be blocked.

According to the syringe having the function of preventing stick injury and reuse according to an embodiment of the present invention, after the injection of the injection solution is completed, the needle and the injection needle unit are placed and detached into the cover combined shield, and the packing unit and the shield head The tip protection member is located at the end of the needle, so that stick injury caused by the injection needle can be completely prevented, and the marking fluid is stored in the patting unit, and this marking fluid is discharged at the stage of use, making it easy to use. As it can be checked, it has the effect of preventing reuse.

According to the blood collection syringe having a preset function capable of preventing stick injury and reuse and leakage according to an embodiment of the present invention, by providing a check valve unit, the inflow of air bubbles during the blood collection process is blocked and completely without external exposure. It can maintain a sealed state and prevent leakage of blood during the blood collection process, thereby improving the precision and accuracy of arterial blood gas analysis. A gas-liquid separation filter is provided on the plunger gasket to collect a set amount of blood. After completion, the needle and the injection needle unit are placed inside the cover combined shield and detached, and the packing unit and the tip protection member are located at the tip of the needle at the head of the shield, and stick injury caused by the injection needle. ) Can be completely prevented, and the marking fluid is stored in the patting unit so that the marking fluid is discharged at the stage of use, so that it is possible to easily check whether it is used, so it has the effect of preventing reuse.

On the other hand, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description. I will be able to.

The following drawings attached to the present specification illustrate a preferred embodiment of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, so the present invention is limited to the matters described in such drawings. It is limited and should not be interpreted.
1A is a cross-sectional view of a conventional syringe,
1B is an exploded cross-sectional view of a conventional syringe,
2 is a cross-sectional view of a syringe having a stick injury prevention and reuse prevention function according to an embodiment of the present invention in a portable mode;
3 is a cross-sectional view of a syringe having a stick injury prevention and reuse prevention function according to an embodiment of the present invention in a use mode,
4 is a cross-sectional view of a state in which nutrient solution is sucked into the barrel through the rear movement of the plunger in FIG. 3;
5 is a cross-sectional view of a state in which a chemical solution is injected after a needle is inserted into a blood vessel in FIG. 4;
6 is a cross-sectional view of a state in which a needle is inserted into the shield by advancing the cover combined shield after use,
7 is a cross-sectional view of a syringe having a stick injury prevention and reuse prevention function according to an embodiment of the present invention in a safe mode,
8 is a cross-sectional view of a preset blood collection syringe having a stick injury prevention and reverse flow prevention function according to an embodiment of the present invention in a portable mode;
9 is a cross-sectional view of a preset blood collection syringe having a stick injury prevention and backflow prevention function according to an embodiment of the present invention in a setting mode;
10 is a cross-sectional view of a preset blood collection syringe having a stick injury prevention and backflow prevention function according to an embodiment of the present invention in a blood collection state,
11 is a cross-sectional view of a preset blood collection syringe having a stick injury prevention and backflow prevention function according to an embodiment of the present invention in a safe mode.

The above objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed contents may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In the present specification, when a component is referred to as being on another component, it means that it may be formed directly on the other component or that a third component may be interposed between them. In addition, in the drawings, the thickness of the components is exaggerated for effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional views and/or plan views, which are ideal exemplary views of the present invention. In the drawings, the thicknesses of films and regions are exaggerated for effective description of technical content. Accordingly, the shape of the exemplary diagram may be modified by manufacturing technology and/or tolerance. Accordingly, embodiments of the present invention are not limited to the specific form shown, but also include a change in form generated according to the manufacturing process. For example, an area shown at a right angle may be rounded or may have a shape having a predetermined curvature. Accordingly, the regions illustrated in the drawings have properties, and the shapes of the regions illustrated in the drawings are intended to illustrate a specific shape of a device region and are not intended to limit the scope of the invention. In various embodiments of the present specification, terms such as first and second are used to describe various elements, but these elements should not be limited by these terms. These terms are only used to distinguish one component from another component. The embodiments described and illustrated herein also include complementary embodiments thereof.

The terms used in the present specification are for describing exemplary embodiments and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprises" and/or "comprising" does not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, a number of specific contents have been prepared to explain the invention in more detail and to aid understanding. However, readers who have knowledge in this field to the extent that they can understand the present invention can recognize that it can be used without these various specific contents. In some cases, it is mentioned in advance that parts that are commonly known in describing the invention and are not largely related to the invention are not described in order to prevent confusion without any reason in describing the invention.

Hereinafter, a configuration, function, and operation method of a syringe having a stick injury prevention and reuse prevention function according to an embodiment of the present invention according to an embodiment of the present invention will be described.

First, FIG. 2 is a cross-sectional view of a syringe having a stick injury prevention and reuse prevention function according to an embodiment of the present invention in a portable mode. And Figure 3 is a cross-sectional view of a syringe having a stick injury prevention and reuse prevention function according to an embodiment of the present invention in a use mode. In addition, FIG. 4 is a cross-sectional view illustrating a state in which nutrient solution is sucked into the barrel through the rear movement of the plunger in FIG. 3. And FIG. 5 is a cross-sectional view showing a state in which a chemical solution is injected after the needle is inserted into the blood vessel in FIG. 4. In addition, Figure 6 is a cross-sectional view showing a state in which the needle is inserted into the shield by advancing the cover combined shield after use. And Figure 7 is a cross-sectional view of a syringe having a stick injury prevention and reuse prevention function according to an embodiment of the present invention in a safe mode.

A syringe having a stick injury prevention and reuse prevention function according to an embodiment of the present invention may be configured to include a barrel, a needle unit, a plunger, a combined cover shield, a packing unit, etc. as shown in FIGS. 2 to 6. have.

The barrel 30 and plunger 40 are constructed similarly to a conventional syringe 1. That is, as shown in FIG. 2, the barrel 30 includes a cylinder-shaped body 32, a barrel head 31 provided on the upper end of the body 32 and protruding upward, and a barrel flange at the lower end. It can be seen that 33) is provided.

In addition, the plunger 40 is inserted into the barrel 30 and moved by the user to provide a suction or compression force, so that the chemical liquid is drawn into the barrel 30 or the chemical liquid stored in the barrel 30 is injected. In addition, this plunger 40 is composed of a rubber, polymer series on the mounting portion of the plunger head 41, and the gasket 44 in contact with the inner surface of the barrel 30, and the lower end It includes a plunger flange 43 provided in, and a plunger body 42 is provided between the plunger head 41 and the plunger flange 43.

The syringe 100 having the function of preventing stick injury and reuse according to an embodiment of the present invention is a new cover combined shield 50, needle unit 20 and packing unit 70, and tip compared to the conventional syringe 1 It consists of a protection member 26.

The needle unit 20 according to the embodiment of the present invention has a needle mounting portion 23 to which the injection needle 21 is coupled to an upper end and a barrel mounting end 25 at the lower end, as shown in FIGS. 2 to 7. It can be seen that it is configured to include a needle body 22 that is provided and inserted to the outside of the barrel head 31, and an insertion groove 24 formed outside the needle body 22

In addition, it is composed of a cover combined shield 50 according to an embodiment of the present invention, and as shown in Figs. 2 to 7, the lower end is opened so that the needle body 22 is inserted outside and rotates up and down, and the flange at the lower end It is understood that it has a tubular body 51 on which 55 is formed, an upper engaging jaw 52 provided on an upper side of the inner surface of the body 51, and a lower engaging jaw 53 provided under the inner surface of the body 51. Able to know

In addition, the cover combined shield 50 has a protruding end 54 further formed on the lower side of the lower engaging jaw 53 formed on the inner surface of the main body 51. The protruding length of the protruding end 54 is It is configured to be larger than the length protruding inward of 53

Therefore, in the portable mode, the lower engaging jaw 53 of the cover combined shield 50 is positioned in a state inserted into the insertion groove 24 of the needle body 22, and the injection needle 21 is placed inside the cover combined shield 50. ) Is positioned, it is possible to protect the injection needle 21.

In addition, in the use mode, the cover combined shield 50 is moved to the lower side, and the needle unit blade 27 is positioned in a state in which the needle unit blades 27 are fitted to the upper engaging jaws 52 of the cover combined shield 50, so that the injection needle 21 ) Can be exposed.

And, in the case of the safety mode after use, after fixing the needle unit 20 inside the cover combined shield 50 with the lower engaging jaw 53 of the cover combined shield 50 inserted into the insertion groove 24, , By moving the cover combined shield 50 to the upper side by the user, the needle unit 20 is detached from the barrel 30 with the needle unit 20 embedded therein. The protruding end 54 serves to separate the needle unit 20 and the barrel 30 while preventing the need unit 20 from falling out to the lower end of the cover combined shield 50.

In addition, a packing unit 70 may be provided inside the head 56 of the cover combined shield 50 according to an embodiment of the present invention. This packing unit 70 is located on the inside of the head 56 at the top of the cover and shield body 51 to guide the needle to protrude to the outside in the use mode, and a storage unit 71 is formed therein. In addition, the marking fluid is stored in the storage unit, and a cutout 72 is provided between the storage unit 71 and the lower surface of the packing unit 70.

Therefore, when the packing unit 70 is crimped through the needle mounting portion 21 of the needle unit 20 after the use mode or immediately after the use mode, the cutout 72 of the packing unit is cut and the marking stored in the storage unit 71 The fluid is discharged to the inside of the outer cover combined shield (50). Therefore, after use, such a marking fluid is discharged into the inside of the cover combined shield 50 to check whether it is used, and thus, reuse of the syringe can be prevented. The marking fluid may be composed of various materials that can be used, such as colored ink.

In addition, according to an embodiment of the present invention, the needle 21 penetrates, and may be configured to include a tip protection member 26 positioned at the upper end of the cover combined shield 50. This tip protection member 26 is positioned between the needle mounting unit 23 and the packing unit 70 in the use mode, as shown in Figs. 3 to 6, and moves the cover combined shield upward in the safe mode. Thus, by being positioned at the end of the needle 21 while the needle unit 20 is positioned therein, it is possible to more safely prevent stick injury.

Hereinafter, a method of using the syringe 100 having the aforementioned stick injury prevention and reuse prevention functions will be described.

First, as shown in FIG. 2, in the portable mode, the lower engaging protrusion 53 of the cover combined shield 50 is positioned in a state inserted into the insertion groove 24 of the needle unit 20 so that the injection needle 21 Will protect you.

And, in the case of switching to the use mode, the user moves the cover and shield 50 to the lower side, as shown in FIG. 3, and the needle unit blades 27 are placed on the upper hook 52 of the cover and use 50. Is placed in the fitted state. And it serves to fix the cover combined shield 50 so that it does not move to the bottom during injection.

In addition, as shown in FIG. 4, the exposed injection needle 21 is inserted into a liquid ampoule, and the plunger 40 is moved to store the chemical liquid inside the barrel 30.

In addition, as shown in FIG. 5, the injection needle 21 is injected into the human body and the chemical solution inside the barrel 30 is injected into the human body. At this time, the needle mounting portion 21 of the needle unit 20 presses the packing unit 70, and the cutting portion 72 is cut by the compression of the packing unit 70, so that the marking fluid stored in the storage unit is a cover combined shield ( 50) It is discharged to the inside. Therefore, it is possible to check whether a syringe is used.

After the use is completed, as shown in FIG. 6, the lower engaging jaw 53 of the cover combined shield 50 is moved to the upper side of the cover combined shield 50 into the insertion groove 24 of the needle body 22. To be positioned so that the injection needle 21 is positioned within the cover 50 for both shielding.

And by moving the cover combined shield 50 further upward, the protruding end 54 of the cover combined shield 50 is inserted into the insertion groove 24 to fix the needle unit 20 to the cover combined shield 50. do.

In addition, the user further moves the cover combined shield 50 to the upper side so that the needle unit 20 is embedded inside the needle unit 20 while the lower end of the needle unit 20 is caught by the protruding end 54 and detached from the barrel 30 for safety. It will switch to mode. And at this time, since the tip hobo member 26 is positioned at the end of the needle 21, it is possible to more safely prevent stick injury.

Therefore, after the use is completed, the needle 21 and the needle unit 20 can be detached in a state in which the needle 21 and the needle unit 20 are placed into the shield combined cover 50, so that stick injury caused by the injection needle can be prevented. It is possible to prevent reuse by discharge of the marking fluid.

Hereinafter, a configuration, function, and operation method of a preset blood collection syringe having a stick injury prevention and backflow prevention function according to an embodiment of the present invention will be described. First, FIG. 8 is a cross-sectional view of a preset blood collection syringe having a stick injury prevention and backflow prevention function according to an embodiment of the present invention in a portable mode. And Figure 9 is a cross-sectional view of a preset blood collection syringe having a stick injury prevention and backflow prevention functions according to an embodiment of the present invention in a setting mode. In addition, Figure 10 is a cross-sectional view of a preset blood collection syringe having a stick injury prevention and reverse flow prevention function according to an embodiment of the present invention in a state during blood collection. And Figure 11 is a cross-sectional view of a preset blood collection syringe having a stick injury prevention and backflow prevention functions according to an embodiment of the present invention in a safe mode.

The preset blood collection syringe having a stick injury prevention and reverse flow prevention function according to an embodiment of the present invention basically includes the configuration of a syringe having the aforementioned stick injury prevention and reuse prevention functions. That is, the cover combined shield 50, the packing unit 70, the needle unit 20, the tip protection member 26, the barrel 30, the plunger 40, including stick injury prevention and reuse prevention functions. .

In addition, the preset blood collection syringe having a stick injury prevention and a backflow prevention function according to an embodiment of the present invention has a backflow prevention function and a preset function added.

A check valve unit 60 is provided in the barrel 30 of the preset blood collection syringe having a stick injury prevention and reverse flow prevention function according to an embodiment of the present invention.

As shown in FIG. 8, the lower side of the injection needle 21 protrudes from the lower side of the needle unit 20 by a specific length, and the lower end of the protruding injection needle 21 is a check valve unit 60 Is inserted through.

Therefore, in the bodily blood mode, the injection needle 22 is drawn into the blood vessel, so that the blood drawn through the injection needle 22 flows into the lower side of the valve of the check valve unit 60. As shown in the enlarged view of FIG. 8, the check valve unit 60 is configured to be connected to the inner surface from the upper end of the barrel head 31 and the upper surface of the barrel body 32, and the upper end of the barrel body 32 It can be seen that the entire surface is provided. In addition, the end surface of the installed needle 21 is located on the same surface as the lower surface of the check valve unit 60.

Then, after the blood flows into and stores the lower barrel 30 of the check valve unit 60, the needle unit 20 is detached through the aforementioned cover combined shield 50, and the needle unit 20 Even after the desorption, leakage of blood stored in the barrel 30 is blocked by the check valve unit 60, and the airtight is maintained so that the inflow and exposure of external gases are blocked.

In addition, the blood collection syringe 100 for arterial blood gas analysis according to an embodiment of the present invention is provided with an anticoagulant on at least one of the lower side of the check valve unit 60 and the inner side of the barrel 30 Can be.

And the blood collection syringe 100 according to the embodiment of the present invention has a preset function. This preset function moves the plunger 40 to first set the amount of blood to be collected, and then injects the needle 21 of the set blood collection syringe 100 into the blood vessel, and the barrel ( 30) The gas inside goes out and only blood is introduced into the barrel 30.

This configuration is made possible by the gas-liquid separation filter 45 inside the gasket 44 mounted on the plunger head 41. As shown in FIG. 8, it can be seen that the gasket 44 is inserted and fixed through the mounting portion of the plunger head 41. A mounting groove 46 in which the plunger head 41 is mounted is formed in the gasket 44, and a gas-liquid separation filter 45 is mounted on the upper end of the gasket 44. In addition, an internal space and a gas discharge passage are provided at the lower end of the filter 45 and in the gasket 44 so that only the gas in the barrel can be discharged to the outside. Therefore, when the needle of the blood collection syringe is injected into the blood vessel, blood is drawn into the barrel 30 without moving the plunger 40, so that the gas in the barrel 30 is discharged to the outside through the gas-liquid separation filter 45.

Hereinafter, a method of using the preset blood collection syringe 100 having a stick injury prevention and backflow prevention function according to an embodiment of the present invention will be described.

First, after determining the amount of blood to be collected, as shown in FIG. 9, the plunger 30 is moved to the rear to set the syringe. And by moving the cover combined shield 50 to the bottom, the needle 21 is exposed to the outside.

And when the needle 21 is injected into the blood vessel, as shown in FIG. 10, the gas in the barrel 30 is discharged to the outside through the gas-liquid separation filter 45 while the plunger 40 is not moved. It can be seen that blood flows in.

When all of the gas is discharged in the barrel 30 and only blood is present inside the barrel 30, blood collection is completed. When blood collection is completed, the needle 21 is detached from the blood vessel and the cover combined shield 50 is removed. The needle unit 20 is moved to the upper end so that the needle unit 20 is located within the cover combined shield 50.

And as shown in FIG. 11, the needle unit 20 is separated from the barrel 30 in a state where the needle unit 20 is located in the cover combined shield 50 by moving the cover combined shield 50 further upward. Make it possible. In addition, even when the needle unit 20 is detached by the check valve unit 60, blood does not leak to the outside without attaching a separate stopper, and at the same time, the needle unit 20 is detached by the check valve unit 60. Even so, external air, gas and blood are not in contact.

Therefore, as shown in Figs. 8 to 11, since blood is not exposed to external gas and does not leak during the entire blood collection process, no bubbles remain, so it is possible to improve the precision and accuracy of arterial blood gas analysis.

In addition, the above-described apparatus and method are not limitedly applicable to the configuration and method of the above-described embodiments, but all or part of each of the embodiments may be selectively combined so that various modifications can be made. It can also be configured.

1: Conventional syringe
2: filter housing
3: filter
4: chemical solution
10: cover
20: needle unit
21: Needle
22: needle body
23: Needle mounting part
24: insertion groove
25: Barrel mounting end
26: tip protection member
27: needle unit wing
30: barrel
31: barrel head
32: barrel body
33: barrel flange
40: plunger
41: plunger head
42: plunger body
43: plunger flange
50: Shield and cover
51: the body
52: upper jaw
53: lower jaw
54: The protruding end
60: check valve unit
70: packing unit
71: storage
72: incision
73: marking fluid
100: a syringe with a stick injury prevention function

Claims (5)

In the syringe,
A barrel having a cylindrical body and having a barrel head protruding upward from an upper end of the body;
A needle unit having a needle body provided at an upper end of the needle mounting portion to which the injection needles are coupled, and having a barrel mounting end inserted to the outside of the barrel head provided at the lower end;
A plunger that is inserted into the body of the barrel, is moved by a user, and provides a suction or compression force according to a moving direction;
A cover combined shield having a tubular shape, inserted outside the needle body, moved up and down by a user, and having a body that protects the injection needle by placing it inside or protrudes to the outside according to the moving direction; And
Includes a packing unit that is located inside the top of the main body of the cover combined shield and stores a marking fluid therein, and discharges the stored marking fluid by being compressed by the needle mounting unit when the main body is moved in a direction protruding the injection needle. A syringe having a function of preventing stick injury and preventing reuse.
The method of claim 1,
A lower engaging jaw is provided on the lower side of the inner surface of the main body,
An insertion groove is formed on the outside of the needle body into which the lower engaging jaw is inserted when the injection needle is positioned inside the body,
The upper side of the inner surface of the main body is provided with an upper jaw,
A syringe having a function of preventing stick injuries and preventing reuse, characterized in that a needle unit blade is provided on the upper side of the needle body to which the upper engaging jaw is fitted when the injection needle protrudes to the outside of the body.
The method of claim 2,
The syringe,
In the portable mode, the lower engaging jaw is inserted into the insertion groove,
In the use mode, the upper locking jaw is inserted into the needle unit wing,
Further comprising a tip protection member located inside the body and through which the injection needle passes,
A syringe having a function of preventing stick injury and preventing reuse, characterized in that the tip of the injection needle is located in the tip protection member and the barrel is separated from the needle unit in the safe mode after use.
The method of claim 3,
A protruding end is provided on the lower side of the lower engaging jaw on the inner surface of the body,
The protruding end is a syringe having a stick injury prevention and reuse prevention function, characterized in that the lower engaging jaw protrudes more inward than the length protruding inward.
The method according to any one of claims 1 to 4,
A storage unit in which the marking fluid is stored is formed inside the packing unit,
Between the storage unit and the lower end of the packing unit is provided with a cutout that is cut when the packing unit is compressed,
The marking fluid stored in the storage unit is discharged when the incision is cut. A syringe having a function of preventing stick injury and preventing reuse.

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