KR102241095B1 - Safety blood collection and liquid medicine injection unit having stick injury preventing fuction with catheter - Google Patents

Abstract

The present invention relates to a blood collection device having a catheter combined stick injury prevention function, a device for drug injection, and a blood collection needle unit having a catheter combined stick injury prevention function. More specifically, in the device for blood collection and drug injection, a supply tube connection end provided at the rear end to which the supply tube is inserted and fixed, a needle mounting end provided in the front to which the needle is coupled, and a hollow formed through from the needle mounting end to the end surface A needle unit having a hole; A needle coupled to the needle mounting end and introduced into the human body; A catheter having an expansion part inserted outside the needle mounting end and a needle film in which the needle is positioned; A shield member having a body portion configured in a hollow tube shape and moved before and after the needle unit by inserting the needle unit therein, and a butterfly-shaped handle provided at both ends of one side of the body portion; And a supply tube connected to the supply tube connection end, wherein in the retracting mode, the front end of the shield unit is located at the front side of the needle unit, and after blood collection or injection of a chemical solution, the needle is detached from the catheter and the blood vessel. It relates to a device for blood collection and drug injection having a function of preventing stick injury for both catheter, characterized in that the needle unit is moved to the rear side so that the needle is located inside the shield unit while the needle is located inside the shield unit.

Description

BACKGROUND OF THE INVENTION 1. Safety blood collection and liquid medicine injection unit having stick injury preventing fuction with catheter

The present invention relates to a blood collection device having a catheter combined stick injury prevention function, a device for drug injection, and a blood collection needle unit having a catheter combined stick injury prevention function.

In general, a butterfly handle syringe has an injection needle in the front of the butterfly handle and a supply tube that is free to bend is connected to the rear, and is used as a syringe for injecting nutrients such as glucose into a patient, blood transfusion or blood collection.

In such a butterfly handle syringe, the syringe is fixed to the skin using a band-aid on the butterfly handle after the injection needle is inserted into the blood vessel of the patient. It has an advantage, but it can be seen that the butterfly-handled syringe that has been injected will stain the patient's blood.

In this way, if a third party, such as a doctor or a nurse, is stabbed by a patient's blood-stained injection needle, there is a concern that the patient's disease (contact infectious diseases such as hepatitis or AIDS) may be infected.

In addition, human blood contains various military services, so blood is collected and various tests are performed. When collecting blood, it can be seen that the injection needle of an ordinary syringe is inserted into the blood vessel and the plunger inserted in the barrel (cylinder) is reversed to collect blood, and the blood is collected using a blood collection syringe.

The dedicated blood collection syringe has a dedicated blood collection injection unit attached to the body of the barrel, in which injection needles are formed on both the left and right sides of the barrel and inside the barrel. It can be seen that when the vacuum blood collection chamber is inserted into the injection needle, blood is collected into the blood collection container as much as the vacuum level of the vacuum blood collection container.

Conventional blood collection syringes are discarded with a blood collection needle inserted in the front of the barrel body after blood collection is completed, and the patient's blood remains in the blood collection needle. B. If a third party is stabbed, there is a risk of being infected with the patient's disease (hepatitis, AIDS, etc.).

In addition, conventional blood collection syringes only perform the function of blood collection. However, if blood collection is required after injecting a catheter into a blood vessel and before receiving fluid, etc., blood is collected through a blood collection syringe, and then a separate catheter syringe is injected. The catheter was inserted into the blood vessel, and there was an inconvenience that multiple injections had to be performed.

Therefore, there is a need to develop a catheter-combined blood collection unit capable of drawing blood and introducing a catheter through a single syringe unit.

Registered Utility Model 20-0245064 Registered utility model 20-0205614 Registered Utility Model 20-0279650 Registered utility model 20-0254001

Therefore, the present invention was devised to solve the conventional problems as described above, and according to an embodiment of the present invention, in the injection mode, the front end of the shield unit is located at the front side of the needle unit, and Insert the needle with the inserted catheter into the blood vessel to complete blood collection or drug injection, remove the needle while inserting the catheter into the blood vessel, and then install the shield unit so that the front end of the shield unit is located on the front side of the needle. It is an object of the present invention to provide a device for blood collection and drug injection having a function of preventing stick injury due to a needle by moving it to the anterior side and preventing stick injury due to a needle in advance.

In addition, according to an embodiment of the present invention, in the blood collection mode, the front end of the shield unit is located at the front side of the needle unit, and after the blood collection is completed by inserting the needle into the blood vessel together with the catheter inserted in front of the shield unit. , After removing the needle with the catheter inserted into the blood vessel, move the shield unit forward so that the front end of the shield unit is located on the front side of the needle to prevent stick injury caused by the outer needle after use. It is an object of the present invention to provide a bleeding needle unit having a function of preventing stick injury that can be used as a catheter.

On the other hand, 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.

The first object of the present invention is a needle unit having a supply tube connection end provided at the rear end to which the supply tube is inserted and fixed, a needle mounting end provided in the front to which the needle is coupled, and a hollow hole formed through from the needle mounting end to the end surface. ; The needle coupled to the needle mounting end and drawn into blood vessels of the human body; A catheter having an expansion part inserted to the outside of the needle mounting end, and a needle film in which the needle is positioned and introduced into the blood vessel together with the needle; A shield unit having a body portion configured in a hollow tube shape and moved back and forth with respect to the needle unit by inserting the needle unit therein, and a butterfly handle provided at each of the lower side ends of the body portion; And the supply tube connected to the supply tube connection end, wherein the shield unit has a front end positioned at the front side of the needle unit in the inlet mode, and after blood collection or injection of the chemical solution, the needle is inserted into the catheter and blood vessel by the user. Separated from and the shield unit is moved to the front side by the user, characterized in that the needle is located inside the body portion, it can be achieved with a device for blood collection and drug injection having a function of preventing injuries with a stick combined with a catheter.

And, before the retracting mode, further comprises a cover attached to the front of the needle unit to prevent stick injury from the needle and separated in the injection mode, wherein the shield unit, when the needle is retracted into the blood vessel, the body portion It is compressed by the butterfly-shaped handle so that the body portion is flexible to hold the needle unit to the rear, and the lower portion of the body portion is composed of a flat portion, and a groove on the flat portion is formed in the front-rear direction ( It may be characterized in that formed in the longitudinal direction of the body portion).

In addition, a locking member provided on one side of the supply tube to restrain the movement of the shield unit toward the rear end in the retracting mode; It may be characterized in that it further comprises a stopper means for restraining the movement of the shield unit in the discard mode.

A second object of the present invention is an inner needle mounting end provided at the rear end to which the inner needle is inserted and fixed, an outer needle mounting end provided in the front to which the outer needles are coupled, and the inner needle mounting end from the outer needle mounting end A needle unit having a through hole formed therethrough; An outer needle coupled to the outer needle mounting end and introduced into the human body; A catheter having an expansion part inserted outside the outer needle mounting end and a needle film in which the outer needles are located, and inserted into the human body together with the outer needles; An inner needle coupled to the inner needle mounting end and inserted into the vacuum blood collection chamber in a blood collection mode and a backflow prevention protective tube surrounding the inner needle in a non-blood collection mode; And a cover and shield member configured in the form of a hollow tube and moved before and after the needle unit by inserting the needle unit therein, and protects the outer needle and the catheter in a packaged state, and a blood collection mode In the front end of the shield unit is located at the front side of the needle unit, while removing the outer needle drawn in after blood collection from the catheter, moving the shield unit forward so that the outer needle is located inside the shield unit. It can be characterized.

And the needle unit is configured to be transparent so as to be able to see in advance the flow of blood that can confirm the possibility of blood collection before vacuum blood collection, and the lower end of the cover and the shield member is composed of a flat portion, and the inner needle mounting end is in front of the A cylinder mounting end provided at one side of the needle unit, and a cylinder having a front side detachable from the cylinder mounting end; And a stopper means for restraining the movement of the shield unit in the discard mode.

According to the device for blood collection and drug injection having a function of preventing stick injuries for both cattering according to an embodiment of the present invention, in the injection mode, the front end of the shield unit is located at the front side of the needle unit, and is inserted in the front of the shield unit. Insert the needle with the catheter into the blood vessel to complete blood collection or drug injection, remove the needle while inserting the catheter into the blood vessel, and then move the shield unit forward so that the front end of the shield unit is located on the front side of the needle. It has the effect of preventing stick injury caused by the needle in advance after it is moved to the side and used.

In addition, according to the blood collection needle unit having a catheter combined stick injury prevention function according to an embodiment of the present invention, in the blood collection mode, the front end of the shield unit is located at the front side of the needle unit, together with the catheter inserted in the front of the shield unit. After completing blood collection by inserting the needle into the blood vessel, remove the needle while inserting the catheter into the blood vessel, and then move the shield unit to the front side so that the front end of the shield unit is on the front side of the needle. It has the effect of preventing stick injury caused by the outer needle in advance.

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. It is limited and should not be interpreted.
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. It is limited and should not be interpreted.
1 is a perspective view of a device for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention;
Figure 2 is a side view of a device for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention;
3 is a plan view of a device for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention;
Figure 4 is an exploded perspective view of a device for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention,
Figure 5a is a cross-sectional view of a device for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention,
Figure 5b is a cross-sectional view of a device for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention in a state in which the cover is removed;
5C is a cross-sectional view of a device for blood collection and drug injection having a function of preventing stick injury for both a catheter according to an embodiment of the present invention in a state in which blood collection or a chemical solution is injected;
5D is a cross-sectional view of the catheter detached after completion of blood collection or injection of a chemical solution;
5E is a cross-sectional view of a state in which the shield unit is advanced to a discard mode after blood collection or injection of a chemical solution is completed;
6 is a perspective view of a blood collection needle unit having a catheter combined stick injury prevention function according to an embodiment of the present invention,
7 is a side view of a blood collection needle unit having a catheter combined stick injury prevention function according to an embodiment of the present invention;
8 is an exploded perspective view of a blood collection needle unit having a catheter combined stick injury prevention function according to an embodiment of the present invention,
Figure 9a is a cross-sectional view of a blood collection needle unit having a catheter combined stick injuries prevention function according to an embodiment of the present invention,
9B is a cross-sectional view of a state in which blood is collected by inserting an outer needle and a catheter into a blood vessel and inserting a vacuum blood collection chamber;
9C is a cross-sectional view illustrating a state in which the catheter is detached after blood collection is completed.
9D is a cross-sectional view illustrating a state in which the shield unit is advanced to a discard mode after blood collection is completed.

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 content 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 therebetween. 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, thicknesses of films and regions are exaggerated for effective description of technical content. Therefore, 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, the area shown at a right angle may be rounded or may have a shape having a predetermined curvature. Accordingly, regions illustrated in the drawings have properties, and the shapes of regions illustrated in the drawings are for exemplifying a specific shape of the region of the device 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 element from another element. 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 components.

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, a reader who has knowledge in this field enough to 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, the configuration and function of the device 1 for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention will be described. The device 1 for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention inserts a catheter and a needle 20 into a human blood vessel to inject or collect blood, and then the catheter 21 It has a function of preventing stick injury through the shield unit after being detached in a state in which the blood vessels are inserted.

First, FIG. 1 shows a perspective view of a device 1 for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention. And, Figure 2 shows a side view of the device 1 for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention. In addition, Figure 3 shows a plan view of the device 1 for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention. And, Figure 4 is an exploded perspective view of the device 1 for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention.

As shown in Figs. 1 to 4, the apparatus 1 for blood collection and drug injection having a stick injury prevention function according to an embodiment of the present invention is a cover 10, a needle 20, a catheter 21, It can be seen that it may be configured to include a needle unit 30, a shield unit 40, a supply tube 50, and the like.

The needle unit 30 has a cylindrical shape as a whole, but as shown in FIG. 4, it can be seen that the lower end is composed of a flat surface 35. In addition, a supply tube connection end 34 is provided at the rear end of the needle unit 30 to insert and fix the supply tube 50, and a needle mounting end 32 is provided at the front so that the needle 20 is coupled. In addition, a hollow hole 31 penetrating from the needle mounting end 32 to the end surface is formed to inject the chemical liquid introduced into the supply tube 50 into the blood vessel through the needle 20 or supply blood to the blood supply tube 50 It is possible to collect blood by entering into.

The needle 20 is coupled to the needle mounting end 32 and is introduced into the human body, and as mentioned above, the supply tube 50 is connected to the supply tube connection end 34.

In addition, the catheter 21 is inserted and mounted outside the needle mounting end 32 through the expansion part 22, and the needle film 23 is inserted into the blood vessel together with the needle 20. Accordingly, according to an embodiment of the present invention, it is possible to simultaneously perform the function of a catheter along with blood collection and injection of a chemical solution.

The body part 41 of the shield unit 40 is generally configured in a hollow tube shape, but the lower part of the outer surface is composed of a flat part 45, and the needle unit 30 is inserted into the inner surface as well to connect the needle unit 30. As a reference, the lower end portion is composed of a flat portion 44 so that it can be moved before and after. In addition, butterfly handles 42 are provided at both ends of one side of the body part 41 to serve as a handle when inserting and removing the needle 20 into the blood vessel.

The lower end of the shield unit 40 is composed of a flat portion 44 so that when the needle 20 is inserted, the protruding end of the needle 20 is positioned at the lower end to guide it so that it can be introduced into the blood vessel.

In addition, a groove 45 extending along the longitudinal direction is formed at the lower end of the shield unit 40. Therefore, in a state in which the user holds the butterfly handle 42, the shield unit 40 is squeezed by the groove 45 so that the needle unit 30 inside the needle unit 30 is automatically fixed.

In addition, as shown in FIGS. 1 to 4, it can be seen that the length of the shield unit 40 is longer than the length of the needle unit 30. Therefore, in the retracting mode, the front end of the shield unit 40 is located at the front side of the needle unit 30, and after blood collection or injection of a chemical solution, the shield unit 40 is moved forward while the needle 20 is detached from the blood vessel. Thus, the needle 20 is positioned inside the shield unit 40, so that stick injury caused by the needle 20 after use can be prevented.

In addition, a cover 10 that is attached and detached in front of the needle unit 30 prevents stick injury from the needle 20 before the injection mode, and the cover 10 is detached in the injection mode.

The needle unit 30 and the shield unit 40 are transparent, and are configured so that the user can check the movement of blood and the movement of chemicals.

In addition, as shown in Figs. 2 to 4, it can be seen that a locking member 51 may be provided on one side of the supply tube 50 to restrain the movement to the rear end of the shield unit 40 in the injection mode. have.

In addition, the device 1 for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention includes a stopper means for restraining the movement of the shield unit 40 moved forward in the discard mode. I can. That is, in order to prevent stick injury by the needle 20 after use, the shield unit 40 is moved to the front side, and a stopper means may be configured to prevent the front and rear rotation of the shield unit 40 moved forward. As long as the stopper means can restrain the movement of the shield unit 40, its specific shape is not limited.

In an embodiment of the present invention, a locking projection 33 is formed on one side of the front outer surface of the needle unit 30, and a locking groove 43 is formed on one side of the rear end of the inner surface of the body portion 41 of the shield unit 40 to shield the shield. By moving the unit 40 forward so that the locking projection 33 is shaped into the locking groove 43, it may be configured to serve as a stopper.

Hereinafter, a method of using the device 1 for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention will be described. 5A is a cross-sectional view of a device 1 for blood collection and drug injection having a function of preventing stick injury according to an embodiment of the present invention. As shown in FIG. 5A, it can be seen that the cover 10 before use is attached to the front of the needle unit 30.

5B is a cross-sectional view of a device 1 for blood collection and drug injection having a function of preventing stick injury for both a catheter according to an embodiment of the present invention in a state in which the cover 10 is detached. As shown in FIG. 5B, after the cover 10 is detached to collect blood or inject a chemical solution, the needle 20 and the catheter 21 are drawn into the blood vessel by holding the butterfly handle 42.

5C is a cross-sectional view of a device 1 for blood collection and drug injection having a catheter combined stick injury prevention function according to an embodiment of the present invention in a state in which blood collection or a chemical solution is injected. As shown in FIG. 5C, when blood is collected, blood flows into the supply tube 50 through the needle 20 and the hollow hole 31, and when the chemical solution is injected, the chemical solution supplied to the supply tube 50 is injected into the hollow hole ( 31), it can be seen that it is injected into the blood vessel through the needle 20.

5D is a cross-sectional view illustrating a state in which the catheter is detached after blood collection or injection of a chemical solution is completed. As shown in FIG. 5D, it can be seen that after the catheter 21 and the needle are injected into the blood vessel and blood collection is completed, the catheter 21 is inserted into the blood vessel, and the needle 20 is detached from the remaining state. . Therefore, after blood collection, a supply tube or the like can be connected to the catheter 21 inserted into the blood vessel to inject fluids, drugs, and the like.

5E is a cross-sectional view showing a state in which the shield unit 40 is advanced and converted to a discard mode after blood collection or injection of a chemical solution is completed. As shown in Figure 5e, after the blood collection or injection of the chemical solution is completed, the user holds the butterfly handle 42 and detaches the needle 20 from the blood vessel, while the needle 20, the needle unit 30, and the supply tube 50 While moving the shield unit 40 to the rear, the shield unit 40 is moved to the front side so that the needle 20 is located in the inner space of the shield unit 40 so that stick injury by the needle 20 can be easily and quickly prevented. do.

Hereinafter, the configuration and function of the blood collection needle unit 100 having a catheter combined stick injury prevention function according to an embodiment of the present invention will be described. The blood collection needle unit 100 having a catheter combined stick injury prevention function according to an embodiment of the present invention corresponds to a syringe dedicated to blood collection, as described in the technology behind the background of the invention, and after inserting the outer needle 110 into the blood vessel The upper surface of the vacuum blood collection chamber 160 is inserted into the inner needle 130 to introduce blood into the vacuum blood collection chamber 160 by differential pressure.

6 is a perspective view of a blood collection needle unit 100 having a catheter combined stick injury prevention function according to an embodiment of the present invention. And, Figure 7 shows a side view of the blood collection needle unit 100 having a catheter combined stick injuries prevention function according to an embodiment of the present invention. In addition, Figure 8 shows an exploded perspective view of the blood collection needle unit 100 having a catheter combined stick injuries prevention function according to an embodiment of the present invention.

As shown in FIGS. 6 to 8, the blood collection needle unit 100 having a catheter combined stick injury prevention function according to an embodiment of the present invention is a catheter 111, a needle unit 120, an outer needle 110, It can be seen that the inner needle 130, the backflow prevention protection tube 131, the cover and shield unit 140, the cylinder 150 (barrel), and the like may be configured.

The needle unit 120 is generally configured in a cylindrical shape, but as shown in FIG. 8, it can be seen that the lower end is configured as a flat surface. In addition, an inner needle mounting end 123 is provided at the rear end of the needle unit 120 and an outer needle mounting end 122 is provided at the front so that the outer needle 110 is coupled. In addition, a through hole 121 is formed through the outer needle mounting end 122 to the inner needle mounting end 123.

The rear end of the outer needle 110 is coupled to the outer needle mounting end 122 of the needle unit 120 to be introduced into the human body. And the catheter 111 is inserted and installed through the expansion pipe 112 to the outside of the outer needle mounting end 122. Therefore, when blood is collected, the catheter 111 and the outer needle 110 are inserted into a blood vessel to collect blood, and then the outer needle 110 is detached while the catheter 111 is inserted into the blood vessel.

In addition, the inner needle 130 is coupled to the inner needle mounting end 123 and is inserted into the vacuum blood collection chamber 160 in the blood collection mode. In addition, the backflow prevention protective tube 131 surrounds the inner needle 130 when the vacuum blood collection chamber 160 is not inserted.

The cover and shield unit 140 has a hollow tube shape as a whole, but the lower end of the outer surface is composed of a flat portion 141, and the needle unit 120 is inserted inside so that it is moved before and after the needle unit 120. The bottom surface of the inner surface is also composed of a flat surface. The lower end of the shield unit 140 is composed of a flat portion 141 so that when the outer needle 110 is inserted, the protruding end of the outer needle 110 is positioned at the lower end to guide it to be introduced into the blood vessel.

In the blood collection mode, the front end of the cover and shield unit 140 is located on the front side of the needle unit 120, and the outer needle 110 that is drawn in after blood is removed and the outer needle 110 is removed from the cover and shield unit ( 140) by moving the cover and shield unit 140 to the front side so as to be located inside the outer needle 110 to prevent stick injury. In addition, a flange 143 is formed on one front side of the cover and shield unit 140 to function as a handle for moving the cover and shield unit 140.

In addition, the aforementioned needle unit 120 and the cover and shield unit 140 are transparent, and are configured so that the user can check the movement of the collected blood.

In addition, a cylinder mounting end 124 is provided on one side of the needle unit 120 in front of the inner needle mounting end 123, so that the cylinder 150 can be attached and detached to the rear end. The cylinder mounting end 124 may be configured with a screw thread, and the cylinder 150 can be attached and detached to the rear of the needle unit 120 through a coupling end provided in the front of the cylinder 150.

Since the cylinder 150 is mounted to the rear of the needle unit 120, the vacuum blood collection chamber 160 is inserted into the cylinder 150 to restrain the movement of the vacuum blood collection chamber 160 to enable stable blood collection. .

In addition, it may be configured to include a stopper means for restraining the movement of the cover and shield unit 140 in the discard mode. That is, to prevent stick injury by the needle after blood collection is completed, the cover and shield unit 140 is moved forward, and a stopper means may be configured to prevent the front and rear rotation of the cover and shield unit 140 moved forward. have. The specific shape of the stopper means is not limited as long as it can restrain the movement of the cover and shield unit 140.

In an embodiment of the present invention, a protruding ring 125 is formed on one side of the front outer surface of the needle unit 120, and a fixing groove 142 is formed on one side of the rear end of the inner surface of the cover and shield unit 140 to form a cover and a shield unit ( 140) may be configured to act as a stopper by moving the protruding ring 125 forward so that the protruding ring 125 is shaped into the fixing groove 142.

Hereinafter, a method of using the blood collection needle unit 100 having the aforementioned catheter combined stick injury prevention function will be described. 9A is a cross-sectional view of a blood collection needle unit 100 having a stick injury prevention function according to an embodiment of the present invention. First, the cylinder 150 is attached through the coupling end at the rear end of the needle unit 120 and the cover and shield unit 140 are moved to the rear to expose the outer needle 110 and the catheter 111. Then, the outer needle 110 and the catheter 111 are introduced into the blood vessel.

9B is a cross-sectional view illustrating a state in which blood is collected by inserting the vacuum blood collection chamber 160. After inserting the outer needle 110 and the catheter 111 into the blood vessel, the vacuum blood collection chamber 160 is inserted into the cylinder 150, and the upper surface of the vacuum blood collection chamber 160 is inserted into the inner needle 130. I can. When the vacuum blood collection chamber 160 is mounted, blood is transferred through the outer needle 110, the through hole 121, and the inner needle 130 due to the pressure differential with the inside of the vacuum blood collection chamber 160. Will flow into.

9C is a cross-sectional view illustrating a state in which the catheter is detached after blood collection is completed. As shown in FIG. 9C, after the blood collection is completed, the catheter 111 is inserted into the blood vessel and left, and the outer needle 110 is detached from the catheter 111. In addition, by inserting a supply tube or the like into the catheter 111, it is possible to continuously supply the infusion solution.

9D is a cross-sectional view showing a state in which the cover and shield unit 140 is moved forward and converted to a discard mode after blood collection is completed. 9D, after the blood collection is complete, the vacuum blood collection chamber 160 is detached and the outer needle 110 is detached from the blood vessel, and the cover and shield unit 140 are moved to the front side, and the cover and shield unit ( 140) By allowing the outer needle 110 to be located inside, it is possible to quickly and conveniently prevent stick injury caused by the outer needle 110.

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 may be made to the above-described embodiments. It can also be configured.

1: Apparatus for blood collection and drug injection with a catheter and stick injuries prevention function
10: cover
20: Needle
21: catheter
22: Expansion part
23: Needle film
30: needle unit
31: Hollow Hall
32: Needle mounting end
33: jamming chin
34: supply tube connection end
35: flat surface
40: shield unit
41: body part
42: Butterfly handle
43: jamming groove
44: Plane part
45: Home
50: supply tube
51: jamming member
100: A blood collection needle unit having a stick injury prevention function
110: outer needle
111: catheter
112: Expansion part
113: needle film
120: needle unit
121: Through hole
122: outer needle mounting end
123: inner needle mounting end
124: cylinder mounting end
125: protruding ring
130: inner needle
131: backflow prevention protective tube
140: cover and shield unit
141: Plane part
142: fixed groove
143: flange
150: cylinder
160: vacuum blood collection chamber

Claims (5)

In the device for blood collection and drug injection,
A needle unit having a supply tube connection end provided at the rear end to which the supply tube is inserted and fixed, a needle mounting end provided at the front to which the needle is coupled, and a hollow hole formed through from the needle mounting end to the end surface;
The needle coupled to the needle mounting end and drawn into blood vessels of the human body;
A catheter having an expansion part inserted to the outside of the needle mounting end, and a needle film in which the needle is positioned and introduced into the blood vessel together with the needle;
A shield unit having a body portion configured in a hollow tube shape and moved back and forth with respect to the needle unit by inserting the needle unit therein, and a butterfly handle provided at each of the lower side ends of the body portion; And
Comprising the supply tube connected to the supply tube connection end,
The shield unit has a front end positioned at the front side of the needle unit in the retracting mode, and after blood collection or injection of a chemical solution, the needle is separated from the catheter and blood vessel by the user, and the shield unit is moved to the front side by the user. The needle is located inside the body,
The shield unit is configured to be flexible so that the body portion is compressed by the butterfly handle when the needle is inserted into the blood vessel so that the body portion holds the needle unit from being pushed backward, and the lower portion of the body portion Is composed of a flat portion, characterized in that the groove is formed in the front-rear direction on the flat portion,
A device for blood collection and drug injection with a catheter stick and injuries prevention function. The method according to claim 1,
Before the retracting mode, it characterized in that it further comprises a cover attached to the front of the needle unit to prevent stick injury from the needle and separated in the injection mode,
A device for blood collection and drug injection with a catheter stick and injuries prevention function. The method according to claim 1,
A locking member provided on one side of the supply tube to restrain the movement of the shield unit toward the rear end in the retracting mode;
It characterized in that it further comprises a stopper means for restraining the movement of the shield unit in the discard mode,
A device for blood collection and drug injection with a catheter stick and injuries prevention function.




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