Blood gas needle assembly

Abstract

The blood gas needle assembly comprises a blood taking needle, an injector and a cap, the blood taking needle is provided with a needle head and a pintle, the injector is provided with a nipple and a connecting base arranged beside the nipple, the pintle and the cap are both matched with the nipple, the pintle is provided with a first connecting part used for being detachably connected with the connecting base, and the cap is provided with a second connecting part used for being detachably connected with the connecting base. The cap is provided with a second connecting part used for being detachably connected with the connecting base. After blood sampling is completed, the blood sampling needle is detached from the syringe, then the cap is covered, the second connecting portion is connected with the connecting base, then the blood sampling needle is submitted for inspection, the blood sampling needle cannot be submitted for inspection along with the syringe during inspection, infection caused by the fact that a needle head stabs medical staff in the inspection process is prevented, and a needle tip of the needle head does not need to be sleeved with a needle tip protective sleeve. The needle point does not face the hand of the medical worker, so that the risk that the medical worker is punctured is reduced; the cap is arranged so that contact between outside air and the nipple can be blocked, and the risk that blood in the injector is polluted is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical appliances, in particular to a blood gas needle assembly. Background Art

[0002] The blood gas needle is used to collect arterial blood samples for blood gas analysis. After the blood gas needle is used to collect blood, it needs to be sent for testing. Because the needle tip is sharp, in order to prevent the needle from stabbing medical staff and causing infection during the testing process, a needle tip protective cover is also needed to cover the needle tip; however, because the needle tip is thin, medical staff are very likely to be stabbed when using the needle tip protective cover, and the risk of medical staff being stabbed is still high. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a blood gas needle assembly.

[0004] According to the embodiment of the utility model, the blood gas needle assembly includes a blood collection needle, a syringe and a cap, the blood collection needle has a needle and a needle plug, the syringe is provided with a nipple and a connecting seat arranged beside the nipple, the needle plug and the cap are both adapted to the nipple, the needle plug is provided with a first connecting part for detachable connection with the connecting seat, and the cap is provided with a second connecting part for detachable connection with the connecting seat.

[0005] The blood gas needle assembly according to the embodiment of the utility model has at least the following technical effects: when in use, the needle is inserted into the patient's subcutaneous artery, the needle plug is put outside the nipple and the first connecting part is connected to the connecting seat, and then blood is collected. After the blood collection is completed, the blood collection needle is removed from the syringe, and then the cap is covered and the second connecting part is connected to the connecting seat, and then it is sent for inspection. During the inspection, the blood collection needle will not be sent for inspection with the syringe, so as to prevent the needle from stabbing the medical staff and causing infection during the inspection process. Moreover, there is no need to put a needle tip protective cover on the outside of the needle tip, and the needle tip will not point to the hand of the medical staff, thereby reducing the risk of the medical staff being stabbed. The setting of the cap can block the contact between the outside air and the nipple, thereby reducing the risk of contamination of the blood in the syringe.

[0006] According to some embodiments of the present invention, the connecting seat is sleeved on the outside of the nipple, and a receiving groove for accommodating the first connecting part or the second connecting part is provided between the connecting seat and the nipple.

[0007] According to some embodiments of the present invention, the connecting seat is threadedly connected to the first connecting portion.

[0008] According to some embodiments of the present invention, the connecting seat is threadedly connected to the second connecting portion.

[0009] According to some embodiments of the utility model, the syringe comprises an outer barrel and a piston arranged in the outer barrel, a one-way valve is arranged in the outer barrel, the one-way valve is arranged between the piston and the nipple, and the one-way valve is connected toward one side of the piston.

[0010] According to some embodiments of the present invention, the one-way valve is a silicone one-way valve.

[0011] According to some embodiments of the utility model, the piston is connected to a push rod, and an elastic member is connected between the push rod and the outer cylinder.

[0012] According to some embodiments of the present invention, the push rod and the outer cylinder are both detachably connected to the elastic member.

[0013] According to some embodiments of the present invention, the elastic member is a latex material member.

[0014] According to some embodiments of the present invention, the connecting seat and the outer cylinder are an integral component.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of a blood gas needle assembly in a use state according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the blood gas needle assembly in another use state of the embodiment of the utility model;

[0019] Figure 3 yes Figure 2 Schematic diagram of the expansion of the elastic member.

[0020] Attached photos

[0021] 100-outer tube; 101-lug; 102-connecting seat; 103-nipple; 110-push rod; 111-piston; 112-button; 120-silicone one-way valve; 200-needle plug; 210-flexible catheter; 220-needle; 300-cap; 400-elastic member; 410-first connecting ring; 420-second connecting ring. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present utility model, it should be understood that the directions or positional relationships indicated, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the meaning of several is one or more, the meaning of more than two is more than two, greater than, less than, exceed, etc. are understood to exclude the number itself, and above, below, within, etc. are understood to include the number itself. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] Reference below Figures 1 to 3 A blood gas needle assembly according to an embodiment of the utility model is described.

[0026] According to the embodiment of the utility model, the blood gas needle assembly includes a blood collection needle, a syringe and a cap 300. The blood collection needle has a needle 220 and a needle plug 200. The syringe is provided with a nipple 103 and a connecting seat 102 arranged beside the nipple 103. The needle plug 200 and the cap 300 are both adapted to the nipple 103. The needle plug 200 is provided with a first connecting portion for detachable connection with the connecting seat 102, and the cap 300 is provided with a second connecting portion for detachable connection with the connecting seat 102.

[0027] For example, Figure 1 As shown, the syringe is arranged horizontally, and the nipple 103 is located at the left end of the syringe; the blood collection needle includes a needle 220, a needle plug 200 and a flexible catheter 210 connected between the pillow and the true plug, and the needle plug 200 is adapted to the nipple 103; in one use state, the needle plug 200 can be put on the outside of the nipple 103 from left to right, so that the nipple 103 is connected with the needle 220 to draw blood; the cap 300 is adapted to the nipple 103, and in another use state, as shown in FIG. Figure 2As shown, the cap 300 can be covered on the outside of the nipple 103 from left to right so that the blood collection needle can be sent for inspection after blood collection is completed.

[0028] It should be noted that when using the needle tip protection cover, the medical staff holds the needle tip protection cover in one hand and the syringe in the other hand, aligns the needle 220 with the needle tip protection cover and then inserts the needle 220 into the needle tip protection cover. During this period, the needle tip will face the medical staff's hand. Once the needle 220 is misaligned with the needle tip protection cover, the medical staff may be easily stabbed.

[0029] When the utility model is used, the needle 220 is inserted into the patient's subcutaneous artery, the needle plug 200 is placed outside the nipple 103 and the first connection part is connected to the connection seat 102, and then blood is collected. After the blood collection is completed, the blood collection needle is removed from the syringe, and then the cap 300 is covered and the second connection part is connected to the connection seat 102, and then sent for inspection. During the inspection, the blood collection needle will not be sent with the syringe to prevent the needle 220 from stabbing the medical staff and causing infection during the inspection. In addition, there is no need to put a needle tip protective sleeve outside the needle tip of the needle 220, and the needle tip will not face the hand of the medical staff, reducing the risk of medical staff being stabbed; the setting of the cap 300 can block the contact between the outside air and the nipple 103, reducing the risk of blood in the syringe being contaminated. The setting of the first connection part can make the connection between the needle plug 200 and the syringe stable, and the setting of the second connection part can make the connection between the cap 300 and the syringe stable.

[0030] In some embodiments of the present invention, the connection seat 102 is sleeved on the outside of the nipple 103, and a receiving groove for receiving the first connection part or the second connection part is provided between the connection seat 102 and the nipple 103. This structure is simple and compact, the connection seat 102 does not protrude in the radial direction of the syringe, the shape of the syringe is regular, and it is easy to store and receive; wherein, the receiving groove is annular.

[0031] In some embodiments of the utility model, the connection seat 102 is threadedly connected to the first connection part. This has a simple structure and is easy to disassemble and assemble; the first connection part and the pintle 200 can be an integral component, the first connection part includes two protruding pieces, the two protruding pieces are respectively arranged on both sides of the pintle 200, the connection seat 102 is provided with an internal thread, and when the connection seat 102 is connected to the first connection part, the protruding piece is arranged in the thread gap of the internal thread. Of course, in addition to the threaded connection, the connection seat 102 and the first connection part can also be detachably connected by snap connection, rotation snap connection or other suitable methods.

[0032] In some embodiments of the present invention, the connection base 102 is threadedly connected to the second connection part. This has a simple structure and is easy to disassemble and assemble; the structure of the second connection part can be the same as that of the first connection part. In addition to the threaded connection, the connection base 102 and the second connection part can also be detachably connected by snap connection, rotation snap connection or other suitable methods.

[0033] In some embodiments of the present invention, the syringe comprises an outer barrel 100 and a piston 111 disposed in the outer barrel 100, a one-way valve is disposed in the outer barrel 100, the one-way valve is disposed between the piston 111 and the nipple 103, and the one-way valve is connected toward one side of the piston 111. When sending the syringe for inspection, the piston 111 is pressed down with appropriate force, and the blood in the syringe is kept at a certain pressure to prevent air from being inhaled, thereby reducing the risk of blood contamination in the syringe.

[0034] In some embodiments of the present invention, the one-way valve is a silicone one-way valve 120. This has a simple structure and is easy to set up. When blood needs to be taken out from the syringe, another syringe and needle 220 can be used to extend from the nipple 103 of the syringe containing blood, penetrate the silicone one-way valve 120, and then extract blood.

[0035] In some embodiments of the present invention, the piston 111 is connected to the push rod 110, and an elastic member 400 is connected between the push rod 110 and the outer tube 100. This makes it easy to press the piston 111 with appropriate force to keep a certain pressure on the blood in the syringe.

[0036] In some embodiments of the present invention, the push rod 110 and the outer tube 100 are both detachably connected to the elastic member 400. In this way, when blood is collected, the elastic member 400 can be removed to avoid the elastic member 400 causing obstruction to blood collection.

[0037] In some embodiments of the present invention, the elastic member 400 is a latex material member. Latex has good tensile strength, softness and comfortable feel.

[0038] In some embodiments of the present invention, the connecting seat 102 and the outer cylinder 100 are an integral component, so that the structure is simple and the production of the connecting seat 102 is simple.

[0039] In some embodiments of the present invention, a lug 101 is provided at one end of the outer tube 100 away from the nipple 103 , a button 112 is provided at one end of the push rod 110 away from the piston 111 , and the elastic member 400 is connected between the lug 101 and the button 112 .

[0040] In some embodiments of the present invention, two lugs 101 are provided at one end of the outer tube 100 away from the nipple 103, and the two lugs 101 are respectively provided on both sides of the outer tube 100. The elastic member 400 is provided with a first connecting ring 410 and a second connecting ring 420. The first connecting ring 410 is sleeved on one of the lugs 101, and the second connecting ring 420 is sleeved on the other lug 101 after passing the button 112. When in use, Figure 2As shown, the first connecting ring 410 is sleeved on one of the lugs 101, and then the second connecting ring 420 is sleeved on the other lug 101 after passing through the pressing handle 112, so that the elastic member 400 can exert a leftward force on the pressing handle 112. The elastic member 400 is easy to assemble and disassemble from the syringe.

[0041] In some embodiments of the present invention, Figure 3 As shown, the elastic member 400 is in a strip shape, the first connecting ring 410 is arranged at one end of the elastic member 400, and the elastic member 400 is provided with a plurality of second connecting rings 420, and the plurality of second connecting rings 420 are all arranged at the other end of the elastic member 400, and the plurality of second connecting rings 420 are arranged in sequence along the extension direction of the elastic member 400. It should be noted that the distance between the pressing hand 112 and the lug 101 is also different depending on the amount of blood collected. By providing a plurality of second connecting rings 420, medical staff can select a suitable second connecting ring 420 to be sleeved on the lug 101, so that the force applied by the elastic member 400 to the pressing hand 112 is moderate.

[0042] In some embodiments of the present invention, the first connecting ring 410 and the second connecting ring 420 are integrally formed with the elastic member 400. The elastic member 400 is in the form of a strip sheet, and during manufacturing, through holes can be cut at appropriate positions of the elastic member 400 to form the first connecting ring 410 and the second connecting ring 420, which is convenient for manufacturing.

[0043] The preferred implementation methods of the present invention are specifically described above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A blood gas needle assembly, characterized in that: The invention comprises a blood collection needle, a syringe and a cap (300), wherein the blood collection needle has a needle (220) and a needle plug (200), the syringe is provided with a nipple (103) and a connecting seat (102) arranged beside the nipple (103), the needle plug (200) and the cap (300) are both adapted to the nipple (103), the needle plug (200) is provided with a first connecting portion for detachably connecting to the connecting seat (102), and the cap (300) is provided with a second connecting portion for detachably connecting to the connecting seat (102).

2. The blood gas needle assembly according to claim 1, characterized in that: The connecting seat (102) is sleeved on the outside of the nipple (103), and a receiving groove for accommodating the first connecting part or the second connecting part is provided between the connecting seat (102) and the nipple (103).

3. The blood gas needle assembly according to claim 2, characterized in that: The connection seat (102) is threadedly connected to the first connection portion.

4. The blood gas needle assembly according to claim 2, characterized in that: The connecting seat (102) is threadedly connected to the second connecting portion.

5. The blood gas needle assembly according to claim 1, characterized in that: The syringe comprises an outer tube (100) and a piston (111) arranged in the outer tube (100); a one-way valve is arranged in the outer tube (100); the one-way valve is arranged between the piston (111) and the nipple (103); the one-way valve is connected to one side of the piston (111).

6. The blood gas needle assembly according to claim 5, characterized in that: The one-way valve is a silicone one-way valve (120).

7. The blood gas needle assembly according to claim 5, characterized in that: The piston (111) is connected to a push rod (110), and an elastic member (400) is connected between the push rod (110) and the outer cylinder (100).

8. The blood gas needle assembly according to claim 7, characterized in that: The push rod (110) and the outer cylinder (100) are both detachably connected to the elastic member (400).

9. The blood gas needle assembly according to claim 8, characterized in that: The elastic member (400) is a latex material member.

10. The blood gas needle assembly according to claim 5, characterized in that: The connecting seat (102) and the outer cylinder (100) are an integral component.

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