CN220089487U - Blood collection indwelling needle and blood collection device - Google Patents

Abstract

The utility model belongs to the technical field of medical appliances, and particularly relates to a blood collection indwelling needle and a blood collection device, which comprise an indwelling needle, an extension tube, a connecting part and a flow stopping clamp, wherein the indwelling needle is communicated with the connecting part through the extension tube, and also comprises a bottle stopper puncture needle and a positive pressure connector; compared with the prior art, the utility model has the advantages and positive effects that: (1) The blood collection indwelling needle can be in threaded connection with the bottle stopper puncture needle or the positive pressure connector through the connecting part; thus, the transfusion after blood drawing is combined without re-injection, thereby reducing the workload of medical care on one hand and relieving the pain of patients on the other hand; (2) The retention needle is a safe retention needle, so that needling is avoided; (3) The needle tip of the bottle stopper puncture needle is positioned in the cylindrical cavity of the protective cap, so that the occurrence of needling is avoided.

Description

Blood collection indwelling needle and blood collection device

Technical field

The utility model belongs to the technical field of medical devices, and specifically relates to a blood collection indwelling needle and a blood collection device.

Background technique

At present, most patients in clinical practice generally draw blood first and then infuse. The blood is drawn with a blood needle; the infusion uses an intravenous indwelling needle. The patient has to be needle-pricked twice or more, which increases the workload of medical staff.

In order to solve the above technical problems, those skilled in the art reduce the number of needle sticks by combining an indwelling needle with a blood collection needle. However, when the needle of the stopper puncture needle connected to the blood collection test tube is exposed, acupuncture is easy to occur, and the indwelling needle is in Acupuncture is easy to occur after the needle is pulled out, which poses certain safety risks. For example, if the patient is infected with hepatitis B or AIDS, it will cause the medical staff to be infected with hepatitis B or AIDS, causing serious physical harm and threatening their life safety.

Utility model content

In order to solve the above problems, the utility model provides a blood collection indwelling needle and a blood collection device.

In order to achieve the above purpose, the technical solution adopted by the present utility model is: a blood collection indwelling needle, which includes an indwelling needle, an extension tube, a connecting part and a flow-stopping clip. The indwelling needle is connected to the connecting part through the extension tube, and the flow-stopping clamp The clamp is installed on the extension tube and can adjust the flow of liquid in the extension tube;

The lower part of the connecting part is cylindrical, and an external thread is fixed on the outer surface of the lower end of the connecting part. The central opening of the connecting part is connected to the extension tube; the connecting part can be connected to the end of the bottle stopper puncture needle or the positive pressure connector. End threaded connection.

Preferably, the indwelling needle is a safety indwelling needle.

Preferably, the indwelling needle includes an indwelling part, a needle core and a catheter; the catheter is fixed at the front end of the indwelling part and communicates with the inside of the indwelling part; the end of the extension tube communicates with the front part of the indwelling part; the front part of the indwelling part A rubber stopper is fixed inside the part; through holes one and two are respectively opened on both sides of the length direction of the retention part; the first through hole is opened on the side of the rubber stopper away from the conduit; the needle core passes through the two through holes in sequence. , through hole one, rubber plug and catheter, and the needle core is slidingly connected with through hole one, through hole two and the catheter.

Preferably, the indwelling needle further includes a pulling piece, which is fixed on the end of the needle core away from the needle tip;

The indwelling needle also includes a sterilizing cotton, which is fixedly disposed on a side of the indwelling portion cavity close to the first through hole, and the sterilizing cotton can be in contact with the outer periphery of the needle core.

Preferably, the protective cap includes a protective cap connecting part, and the protective cap connecting part is cylindrical;

Preferably, the positive pressure connector includes an upper connection part and a lower connection part. The upper connection part is cylindrical and has internal threads on its inner wall. The lower end of the lower connection part has external threads; The upper end of the connecting part of the joint is threadedly connected to the lower end of the connecting part.

A blood collection device, including any of the above blood collection indwelling needles, bottle stopper puncture needles and blood collection test tubes; the bottle stopper puncture needle includes a needle, a protective cap and a needle connection part; the protective cap and the needle connection part are fixedly connected , the needle is fixed in the protective cap and the needle connection part; the upper part of the needle connection part is cylindrical, and the inner wall of the upper part of the needle connection part is provided with internal threads; the needle and the protective cap are coaxial, and the needle The tip of the needle is in the protective cap; the needle is far away from the needle tip and is in the upper part of the needle connection part; when collecting blood, the upper part of the needle connection part is threadedly connected to the lower part of the connection part.

Preferably, the protective cap and the needle connection part are integrally formed, the protective cap includes a protective cap connection part, and the protective cap connection part is cylindrical; the blood collection test tube includes a blood collection test tube rubber stopper, and the blood collection test tube during blood collection The rubber plug is slidably connected to the connecting portion of the protective cap.

Compared with the existing technology, the advantages and positive effects of this utility model are:

(1) The blood collection indwelling needle can be threaded with the bottle puncture needle or the positive pressure connector through the connecting part; in this way, there is no need to re-inject the infusion after blood drawing, which on the one hand reduces the nurse's workload and on the other hand reduces the patient's pain;

(2) The indwelling needle is a safe indwelling needle, which avoids the occurrence of acupuncture;

(3) The tip of the needle is located in the cylindrical cavity of the protective cap. On the one hand, the protective cap prevents acupuncture, and on the other hand, it serves to connect the blood collection test tube;

(4) When collecting blood, the needle connection part and the protective cap connection part are slidingly connected. The protective cap connection part plays a positioning role to ensure that the needle penetrates along the axis of the blood collection test tube, avoiding needle puncture caused by the needle skewing into the blood collection test tube. inner wall of test tube;

(5) The indwelling needle also includes sterile cotton. On the one hand, the sterile cotton plays a role in disinfection and sterilization. On the other hand, it plays an adsorption role to prevent part of the blood in the needle core from flowing out of the indwelling part and causing secondary contamination.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present utility model more clearly, the drawings needed to be used in the description of the embodiments will be briefly introduced below:

Figure 1 is a schematic diagram of a blood collection indwelling needle without a stopper puncture needle and positive pressure connector;

Figure 2 is a schematic diagram of the blood collection indwelling needle with the stopper puncture needle installed;

Figure 3 is a schematic cross-sectional view of a blood collection indwelling needle with a stopper and a puncture needle;

Figure 4 is a schematic diagram of the connection between the blood collection indwelling needle bottle stopper puncture needle and the blood collection test tube.

Figure 5 is a schematic diagram of a blood collection test tube with an indwelling needle for blood collection;

Figure 6 is a schematic diagram of the positive pressure connector installed on the blood collection indwelling needle;

Figure 7 is a schematic diagram of the positive pressure connector of the blood collection indwelling needle;

Figure 8 is a schematic diagram of a safe indwelling needle for blood collection;

Figure 9 is the second schematic diagram of a safe indwelling needle for blood collection;

Figure 10 is a schematic diagram of the integral molding of the blood collection indwelling needle protective cap and the needle connection part.

Explanation of reference symbols:

1—Indwelling needle, 11—Indwelling part, 111—Through hole one, 112—Through hole two, 12—Needle core, 13—Drawing piece, 14—Catheter, 15—sterile cotton;

2—Bottle stopper puncture needle, 21—Needle, 22—Protective cap, 221—Protective cap connection part, 23—Needle connection part;

3—positive pressure joint, 31—upper connecting part of the joint, 32—lower connecting part of the joint;

4—stop clamp;

5—extension tube;

6—Blood collection test tube, 61—Blood collection test tube rubber stopper;

7—Connection part.

Detailed ways

In order to understand the above-mentioned objects, features and advantages of the present invention more clearly, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described here. Therefore, the present utility model is not limited to the specific disclosure of the specification below. Limitations of Examples.

Example 1

The following is a detailed description of a blood collection indwelling needle with reference to Figures 1 to 10. As shown in Figure 1, a blood collection indwelling needle includes an indwelling needle 1, an extension tube 5, a connecting part 7 and a flow stop clip 4; the indwelling needle 1 is extended by The pipe 5 is connected with the connecting part 7 , and the flow stopper 4 is installed on the extension pipe 5 and can adjust the flow rate of the liquid in the extension pipe 5 .

As shown in Figures 2 and 6, the lower part of the connecting part 7 is cylindrical, and an external thread is fixed on the outer surface of the lower end of the connecting part 7. The central opening of the connecting part 7 is connected to the extension tube 5; the connecting part 7 can be connected with the bottle stopper puncture needle. 2 end or positive pressure connector 3 end threaded connection.

As shown in Figure 8, the indwelling needle 1 is a safety-type indwelling needle.

As shown in Figures 8 and 9, the indwelling needle 1 includes an indwelling part 11, a needle core 12 and a catheter 14; the catheter 14 is fixed at the front end of the indwelling part 11 and communicates with the inside of the indwelling part 11; the end of the extension tube 5 is connected to the indwelling part 11 The front part is connected; a rubber stopper is fixed in the front part of the retention part 11; a through hole 111 and a second through hole 112 are respectively opened on both sides of the length direction of the retention part 11; the first through hole 111 is opened on the side of the rubber stopper away from the catheter 14; the needle The core 12 passes through the second through hole 112 , the first through hole 111 , the rubber plug and the conduit 14 in sequence, and the needle core 12 is slidably connected with the first through hole 111 , the second through hole 112 and the conduit 14 .

As shown in FIG. 8 , the indwelling needle 1 further includes a pulling member 13 , which is fixed on the end of the needle core 12 away from the needle tip.

As shown in FIG. 9 , the indwelling needle 1 also includes a sterilizing cotton 15 . The sterilizing cotton 15 is fixed on the side of the cavity of the indwelling portion 11 close to the through hole 111 , and the sterilizing cotton 15 can contact the outer periphery of the needle core 12 .

As shown in Figure 7, the positive pressure connector 3 includes an upper connector portion 31 and a lower connector portion 32. The upper connector portion 31 is cylindrical and has internal threads on its inner wall. The lower end of the connector lower connector 32 has external threads. Infusion The upper connecting part 31 of the joint is threadedly connected to the lower part of the connecting part 7.

A blood collection device, as shown in Figures 2 and 3, includes the above-mentioned blood collection indwelling needle, bottle stopper puncture needle 2 and blood collection test tube 6; bottle stopper puncture needle 2 includes a needle 21, a protective cap 22 and a needle connection part 23; the protective cap 22 is fixedly connected to the needle connection part 23, and the needle 21 is fixed in the protective cap 22 and the needle connection part 23; the upper part of the needle connection part 23 is cylindrical, and the inner wall of the upper part of the needle connection part 23 is provided with internal threads; the needle 21 and the protective cap 22 Coaxially, the needle tip of the needle 21 is located in the protective cap 22; the needle 21 is far away from the needle tip and is located in the upper part of the needle connecting part 23; during blood collection, the upper part of the needle connecting part 23 is threadedly connected to the lower part of the connecting part 7.

As shown in FIG. 10 , the protective cap 22 and the needle connection part 23 are integrally formed. The protective cap 22 includes a protective cap connection part 221 , and the protective cap connection part 221 is cylindrical.

As shown in FIG. 5 , the blood collection test tube 6 includes a blood collection test tube rubber stopper 61 . During blood collection, the blood collection test tube rubber stopper 61 is slidably connected to the protective cap connecting portion 221 .

It also includes an infusion connection mechanism. The infusion connection mechanism includes an infusion tube and an infusion connection part. The infusion connection part is cylindrical and has internal threads on its inner wall. One end of the infusion pipe is located in the cavity of the infusion connection part; during infusion, the lower connecting part 32 of the joint is connected to the infusion The connection part is threaded.

As shown in Figure 1, the stopper clamp 4 is a Robert clamp.

The steps for collecting blood using an indwelling blood collection needle:

The first step is to close the stopper clamp 4 so that the extension tube 5 is completely sealed;

The second step is to thread the connection part 7 with the bottle stopper puncture needle 2;

The third step is to slide the rubber stopper of the blood collection test tube 61 to the protective cap connection part 221. As the sliding length gradually increases, the tip of the needle 21 pierces the rubber stopper of the blood collection test tube 6, and continues to screw for a certain distance before stopping;

The fourth step is as shown in Figure 7. Insert the needle core 12 of the indwelling needle 1 into the patient's blood vessel; loosen the tourniquet, withdraw the needle core 12 into the indwelling part 11, and then slowly send the catheter 14 into the vein; observe When there is no bleeding, pull out the needle core 12;

The fifth step is to push the flow regulator 4 to connect the extension tube 5. At this time, blood is drawn, and the blood flows into the blood collection test tube 6 through the extension tube 5 and the needle 21, thus completing the blood collection operation;

Step 6: After the blood collection is completed, close the flow stop clamp 4, then pull out the blood collection test tube 6 and unscrew the stopper puncture needle 2.

Infusion working steps:

The catheter 14 remains in the patient's body after blood collection in the first step;

The second step is to thread the lower part of the connecting part 7 to the upper connecting part 31 of the positive pressure connector 3. After screwing to a certain distance, open the flow stop clamp 4, and connect the end of the positive pressure connector 3 away from the connecting part 7 with the infusion The connecting mechanism is connected to perform the infusion operation.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any skilled person familiar with the art may make changes or modifications to equivalent changes using the technical contents disclosed above. Equivalent embodiments can be used in other fields, but any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model. .

Claims (7)

1. An indwelling needle for blood collection, characterized in that: it includes an indwelling needle (1), an extension tube (5), a connecting part (7) and a flow-stop clamp (4); the indwelling needle (1) passes through the extension tube (5) ) is connected to the connecting part (7), and the flow stop clamp (4) is installed on the extension tube (5) and can adjust the flow rate of the liquid in the extension tube (5); The lower part of the connecting part (7) is cylindrical, and an external thread is fixed on the outer surface of the lower part of the connecting part (7). The central opening of the connecting part (7) is connected to the extension tube (5); the connecting part (7) (7) It can be threadedly connected to the end of the bottle stopper puncture needle (2) or the end of the positive pressure connector (3). 2. The blood collection indwelling needle according to claim 1, characterized in that: the indwelling needle (1) is a safety indwelling needle. 3. The blood collection indwelling needle according to claim 2, characterized in that: the indwelling needle (1) includes an indwelling portion (11), a needle core (12) and a conduit (14); the conduit (14) is fixed The front end of the retention part (11) is connected with the inside of the retention part (11); the end of the extension tube (5) is connected with the front part of the retention part (11); a rubber stopper is fixed in the front part of the retention part (11) ; The retention part (11) has one through hole (111) and two through holes (112) respectively on both sides in the length direction; the one through hole (111) is opened on the side of the rubber plug away from the conduit (14); so The needle core (12) passes through the through hole two (112), the through hole one (111), the rubber plug and the catheter (14) in sequence, and the needle core (12) and the through hole one (111) and the through hole two (112) ) and the conduit (14) are slidingly connected. 4. The blood collection indwelling needle according to claim 3, characterized in that: the indwelling needle (1) further includes a drawing piece (13), and the drawing piece (13) is fixedly located away from the needle core (12). the tip of a needle; The indwelling needle (1) also includes a sterilized cotton (15). The sterilized cotton (15) is fixed on one side of the cavity of the indwelling part (11) close to the through hole one (111), and the sterilized cotton (15) ) can contact the outer periphery of the needle core (12). 5. The blood collection indwelling needle according to claim 1, characterized in that: the positive pressure connector (3) includes an upper connector portion (31) and a lower connector portion (32); the upper connector portion (31) ) is cylindrical and has internal threads on its inner wall, and external threads are provided on the outer periphery of the lower connecting part (32) of the joint; during infusion, the upper connecting part (31) of the joint is threadedly connected to the lower part of the connecting part (7). 6. A blood collection device, characterized by: comprising the blood collection indwelling needle according to any one of claims 1 to 5, a bottle stopper puncture needle (2) and a blood collection test tube (6); The bottle stopper puncture needle (2) includes a needle (21), a protective cap (22) and a needle connection part (23); the protective cap (22) and the needle connection part (23) are fixedly connected, and the needle (21 ) is fixed in the protective cap (22) and the needle connection part (23); the upper part of the needle connection part (23) is cylindrical, and the inner wall of the upper part of the needle connection part (23) is provided with internal threads; The needle (21) and the protective cap (22) are coaxial, and the needle tip of the needle (21) is inside the protective cap (22); the needle (21) is far away from the needle tip and is located at the upper part of the needle connection part (23) Inside; When collecting blood, the upper part of the needle connecting part (23) is threadedly connected to the lower part of the connecting part (7). 7. The blood collection device according to claim 6, characterized in that the protective cap (22) and the needle connection part (23) are integrally formed, and the protective cap (22) includes a protective cap connection part (221). The protective cap connecting part (221) is cylindrical; The blood collection test tube (6) includes a blood collection test tube rubber stopper (61), and the blood collection test tube rubber stopper (61) is slidably connected to the protective cap connection portion (221) during blood collection.