CN211583178U - Disposable peripheral blood collector - Google Patents

Abstract

The utility model application belongs to the technical field of medical auxiliary equipment, and specifically discloses a disposable peripheral blood collector, which includes a tube body, the tube body can produce elastic deformation, and the tube body can be squeezed to generate negative pressure. The top of the tube body is coaxially and detachably connected with a fixed plug, the fixed plug is provided with a blood collection tube, the two ends of the blood collection tube respectively penetrate the top and bottom ends of the fixed plug, and the bottom end of the blood collection tube extends into the Inside the tube, a suction head is communicated with the top end of the blood collection tube, a cap is detachably connected to the top of the tube body, and both the suction head and the fixing plug are located in the cap. The utility model can avoid blood volatilization and aerosol generation after blood collection.

Description

Disposable peripheral blood collector

technical field

The utility model application belongs to the technical field of medical auxiliary equipment, and specifically discloses a disposable peripheral blood collector.

Background technique

In the process of clinical medical diagnosis and treatment, it is necessary to frequently collect blood from patients. The most common way of blood collection is to use a syringe to draw blood from a vein, or connect a blood collection tube to a blood collection tube to draw blood from the vein, and then transfer the collected blood into a separate test tube. Inner centrifugation to separate serum or plasma for qualitative or quantitative detection and analysis.

If you encounter people who are not suitable for venous blood collection, such as blood disease patients, infants, children, the elderly, etc., the peripheral blood collection method is suitable, but the existing blood collection devices are complicated to operate, such as: the finger currently used for medical testing The collection process of peripheral blood is realized by squeezing the fingers. During the squeezing process, the blood is allowed to flow into the open blood collection tube, or the blood is collected with a capillary pipette. Because in the process of peripheral blood collection, it is necessary to continuously squeeze the peripheral blood. The blood vessels allow the blood to flow out so that a sufficient amount of blood can be collected. In addition, the blood usually collected needs to be mixed with an anticoagulant to prevent blood coagulation. Since the existing blood collection device does not have a sealing function, the collected blood is volatile and generates aerosols after mixing with the anticoagulant, which pollutes the environment. In addition, pollutants in the air can easily enter the blood collection tube to contaminate the collected blood.

Utility model content

The purpose of the utility model is to provide a disposable peripheral blood collector, which aims to avoid the phenomenon of aerosol generated by volatilization of blood after blood collection, and to avoid pollution to the environment and the collected blood.

In order to achieve the above object, the basic scheme of the present utility model is:

The disposable peripheral blood collector includes a tube body, which can produce elastic deformation, and a negative pressure can be generated inside by pressing the tube body. The top of the tube body is coaxially and detachably connected with a fixing plug. A blood collection tube is pierced through the fixed plug, one end of the blood collection tube is located in the tube body, the other end of the blood collection tube is located outside the tube and is connected with a suction head, the top of the tube body is detachably connected with a cap, and the suction head and the fixing plug are located in the cap.

The working principle and beneficial effects of this basic scheme are as follows:

1) When this technical solution is in use, by opening the cap and using the suction head to align the bleeding port, since the tube body can produce elastic deformation, the cavity formed between the tube body and the fixed plug forms a negative pressure cavity. When the tube is in the tube, the air in the tube can be discharged to form a negative pressure. When the squeezing force on the tube is withdrawn, the blood can be actively sucked into the blood collection tube, and then the blood flows from the blood collection tube into the tube body for collection. When the squeezing force is applied to the tube body and the squeezing force on the tube body is withdrawn, blood can be continuously sucked into the blood collection tube. This technical solution can make the blood automatically without squeezing the peripheral blood vessels of the patient during the blood collection process. It is sucked into the blood collection tube, which reduces the burden on the patient, makes the patient more comfortable during the blood collection process, and improves the patient's cooperation.

2) Since the fixed plug is detachably connected to the tube body, when the blood collection is completed, the fixed plug and blood collection tube can be taken out from the tube body, and then the cap is connected to the top of the tube body, so as to cover the nozzle of the tube body and prevent the The volatilization of blood produces aerosol phenomenon, so as to avoid polluting the environment, and the setting of the cap can also prevent pollutants in the air from entering the tube body and contaminating the blood.

3) In this technical solution, the cap and the tube body are detachably connected, so the cap can be connected or separated from the tube body, which is easy to open and close. The blood collection end is contaminated. When blood is collected, the cap is separated from the tube body, so that normal blood collection is performed on the patient. After the blood collection is completed, the cap is connected to the tube body to prevent blood from splashing or volatilizing.

Further, the pipe body includes a liquid filling cylinder and a rubber tube capable of elastic deformation, the bottom end of the rubber tube is coaxially and fixedly connected with the top end of the liquid filling cylinder, and the rubber tube and the liquid filling cylinder are communicated with each other.

In this technical solution, the tube body is divided into two parts, and the rubber tube can make the operator repeatedly squeeze and loosen the rubber tube, so as to generate negative pressure in the tube body, which is convenient for blood inhalation, while the liquid filling cylinder in this technical solution has no elasticity. Deformation, such a setting is more convenient for storing blood. When squeezing the rubber tube, it is not easy to make the blood slosh. Because the rubber tube has elastic deformation, it is not convenient to fix it during transportation, and the setting of the liquid filling cylinder is more convenient. Fixed clamping, so as to facilitate the transportation of the entire collector in this technical solution.

Further, the lower part of the liquid filling cylinder is tapered.

This arrangement facilitates the installation of the liquid filling cylinder on the centrifuge device in the process of centrifuging the blood in the later stage.

Further, an installation cylinder is fixedly connected to the upper part of the rubber tube, and the cap is detachably connected to the installation cylinder.

In the technical solution, the installation cylinder is more convenient to connect with the cap, and the process of opening and closing the cap is simpler and easier to operate.

Further, the fixing plug is in an interference fit with the top end of the rubber tube.

In this way, the interference fit relationship between the fixed plug and the rubber tube can realize the detachable connection relationship between the two, and at the same time, the sealing performance of the entire tube body can be improved.

Further, the fixing plug is located in the installation cylinder and is coaxially threaded with the installation cylinder.

With this arrangement, the connection between the fixed plug and the installation cylinder is simpler, and the use process is more convenient. When the fixed plug needs to be separated from the hose, it is only necessary to unscrew the fixed plug out of the installation cylinder.

Further, a connecting pipe is coaxially connected between the rubber tube and the liquid filling cylinder, and both the rubber tube and the liquid filling cylinder are fixedly connected to the inner side wall of the connecting pipe.

The setting of the connecting pipe connects the rubber hose and the liquid filling cylinder to each other.

Further, the outer side of the connecting pipe is provided with an external thread, and the cap can be threadedly matched with the connecting pipe.

In this way, when blood collection is performed on the patient's terminal, the cap can be removed from the installation cylinder on the rubber tube, and the removed cap can be inserted from the bottom end of the liquid filling cylinder, and connected with the connecting pipe thread, so that in the blood collection At this time, the cap can still be located on the liquid filling cylinder. When the blood collection is completed, after taking out the blood collection tube and the fixed plug, you can immediately take the cap from the tube body to seal the mouth of the rubber tube, so that the cap and the blood collection tube are not connected during the blood collection process and after the blood collection is completed. The tube body is always a whole, which is convenient to carry, and can reduce the probability of the cap being polluted, and the cap can be screwed on the connecting cylinder immediately after being unscrewed from the mounting cylinder, and is not easily lost.

Further, the outer side wall of the liquid filling cylinder is provided with a scale line for identifying the blood collection volume.

This setting enables medical staff to observe the blood collection volume more intuitively.

Further, the bottom end of the blood collection tube extends into the lower part of the liquid filling cylinder.

Because in clinical practice, in order to prevent blood coagulation, it is usually necessary to add anticoagulant to the liquid filling cylinder of the tube body, and in this technical solution, the blood collection tube extends into the lower part of the liquid filling cylinder, which is convenient for inhaling blood and filling liquid. The anticoagulant placed in the cartridge is thoroughly mixed.

Description of drawings

Fig. 1 is the front view of the first embodiment of the disposable peripheral blood collector of the present invention;

Fig. 2 is the sectional view of A-A in Fig. 1;

Fig. 3 is a partial enlarged view at B in Fig. 2;

4 is a front view of the second embodiment of the disposable peripheral blood collector of the present invention;

Fig. 5 is the sectional view of C-C among Fig. 4;

Fig. 6 is a partial enlarged view at D in Fig. 5;

7 is a front view of the third embodiment of the disposable peripheral blood collector of the present invention;

8 is a schematic diagram of the state of the disposable peripheral blood collector of the third embodiment of the present invention after the cap and the connecting pipe are screwed together.

Detailed ways

The following is further described in detail by specific embodiments:

The reference numerals in the drawings in the description include: a liquid filling cylinder 1 , a rubber tube 2 , a cap 3 , a mounting cylinder 4 , a fixing plug 5 , a suction head 6 , a blood collection tube 7 , and a connecting tube 8 .

Example 1

The embodiment is basically as shown in FIG. 1: the disposable peripheral blood collector includes a tube body, and the tube body can produce elastic deformation. In this embodiment, the tube body includes a rubber tube 2 and a liquid filling cylinder 1 sequentially from top to bottom. The middle rubber hose 2 is cylindrical, the upper part of the liquid filling cylinder 1 is cylindrical, and the lower part of the liquid filling cylinder 1 is a conical cylinder. The diameter of the top of the liquid filling cylinder 1 is equal to the diameter of the hose 2. The top end and the bottom end of the hose 2 are coaxially bonded and fixed, and the liquid filling cylinder 1 and the rubber hose 2 are sealed and connected. The principle and material of the rubber tube 2 in the embodiment are similar to the rubber tip on the rubber tip dropper in the prior art, and the rubber tube 2 is made of rubber with elastic deformation.

2 and 3, a fixing plug 5 is coaxially and detachably connected to the top of the rubber tube 2 and located inside the rubber tube 2. In this embodiment, the fixing plug 5 is cylindrical, and the fixing plug 5 is made of rubber material. The diameter of 5 is larger than the inner diameter of the hose 2, so that the fixing plug 5 is in an interference fit with the upper part of the hose 2.

The fixed plug 5 is coaxially connected with a blood collection tube 7, the blood collection tube 7 penetrates into the interior of the fixed plug 5, and the outer side wall of the blood collection tube 7 is bonded and fixed with the fixed plug 5, and the bottom end of the blood collection tube 7 is an open end, and the blood collection tube 7 is an open end. The bottom end of the blood vessel 7 is located at the lower part of the liquid filling cylinder 1 , the top of the blood collection tube 7 is bonded and fixed with a suction head 6 , and the suction head 6 communicates with the blood collection tube 7 .

The upper part of the hose 2 is fixedly connected with an installation cylinder 4 , the installation cylinder 4 is sleeved on the outer side of the hose 2 , and the inner side wall of the installation cylinder 4 is bonded and fixed with the outer side wall of the rubber hose 2 . The top end of the hose 2 is detachably connected with a cap 3, the cap 3 has a cylindrical structure, the top end of the cap 3 is a closed end, the bottom end of the cap 3 is an open end, and the cap 3 is detachably connected to the mounting cylinder 4. This embodiment The outer side wall of the middle mounting cylinder 4 is provided with external threads, the inner side wall of the cap 3 is provided with internal threads, and the cap 3 is threadedly connected with the mounting cylinder 4, so that the cap 3 is indirectly connected with the hose 2 in a detachable connection. After the cap 3 is connected to the mounting cylinder 4 , the suction head 6 and the fixing plug 5 are located in the cap 3 .

Before blood collection, the cap 3 is threadedly matched with the installation cylinder 4, so that the suction head 6 serving as the blood collection end is located in the cap 3 to avoid contamination, thereby ensuring the hygiene and safety during blood collection; when blood collection is required, place the cap 3 Unscrew from the installation cylinder 4 to expose the suction head 6, and then use the suction head 6 to align the blood collection port of the patient's peripheral part, and repeatedly squeeze and loosen the rubber tube 2. When the rubber tube 2 is squeezed, the air is discharged to make the whole Negative pressure is formed in the tube. When the rubber tube 2 is loosened, the blood can be actively sucked in, and the blood will flow into the liquid filling cylinder 1 from the blood collection tube 7 . During clinical use, in order to avoid blood coagulation, an anticoagulant can be put into the liquid filling cylinder 1 in advance, so that the blood flowing into the liquid filling cylinder 1 from the blood collection tube 7 will be mixed with the anticoagulant, thereby preventing blood coagulation and affecting the later detection.

When the blood collection volume meets the detection requirements (usually the blood collection volume is 2mL), keep the suction head 6 away from the patient's blood collection port, and then pull out the fixing plug 5 from the rubber tube 2 and discard it into the sharps box for collection. At this time, the cap 3 that was initially unscrewed from the installation cylinder 4 is screwed on the outside of the installation cylinder 4 again, so that the cap 3 seals the entire tube body, so as to prevent the collected blood from being polluted, and prevent the blood from volatilizing and forming aerosol and contamination. surroundings.

Embodiment 2

As shown in FIGS. 4 , 5 and 6 , the difference between the disposable peripheral blood collector and the first embodiment is that in this embodiment, the bottom end of the installation cylinder 4 is bonded and fixed to the top end of the rubber tube 2 , and the installation cylinder 4 The inner wall is provided with internal threads. In this embodiment, the fixing plug 5 is made of plastic material, and the outer side of the fixing plug 5 is provided with an external thread, and the fixing plug 5 is threadedly matched with the mounting cylinder 4 .

In this embodiment, a scale line (not shown in the figure) for identifying the blood collection volume is provided on the outer side wall of the liquid filling cylinder 1, and the setting of the scale line is convenient for medical personnel to observe the blood collection volume more intuitively and accurately.

In this embodiment, the fixing plug 5 is threadedly connected to the installation cylinder 4. This arrangement can indirectly connect the fixing plug 5 to the hose 2, and the connection between the fixing plug 5 and the installation cylinder 4 is simpler in this embodiment. After the blood collection is completed, the fixing plug 5, the suction head 6 and the blood collection tube 7 can be taken out from the entire tube body by unscrewing the fixing plug 5 in the installation cylinder 4. Compared with the first embodiment, the fixing plug 5 is removed from the rubber tube 2. When the plug 5 is used, a relatively large force is required to pull out the fixed plug 5 (due to the interference fit between the fixed plug 5 in the first embodiment and the rubber tube 2, the force used when pulling out the fixed plug 5 is large, and the The plug 5 will generate inertia, when the fixed plug 5 is pulled out, the medical staff is easily stabbed by the suction head 6), and in this technical solution, when the fixed plug 5 is taken out, it is safer and more convenient.

Embodiment 3

As shown in FIG. 7 , the difference between the disposable peripheral blood collector and the first embodiment is that a connecting tube 8 is coaxially connected between the rubber tube 2 and the liquid filling cylinder 1, and the cross-section of the connecting tube 8 is annular, and Both the rubber tube 2 and the liquid filling cylinder 1 are bonded and fixed with the inner side wall of the connecting tube 8 .

The outer side wall of the connecting pipe 8 is provided with external threads, and the cap 3 is threadedly matched with the connecting pipe 8 . The diameter of the cap 3 is larger than the diameter of the cylindrical portion of the upper portion of the liquid-filling cylinder 1 , and this arrangement enables the cap 3 to be smoothly inserted into the outer side of the liquid-filling cylinder 1 .

As shown in FIG. 8 , when blood collection is required, the cap 3 is unscrewed from the installation cylinder 4. At this time, the unscrewed cap 3 is inserted upward from the bottom end of the liquid filling cylinder 1, and the cap 3 is connected to The outer side wall of the pipe 8 is threaded, so that the cap 3 is integrated with the entire pipe body. Compared with the cap 3 removed from the installation cylinder 4, the cap 3 can be placed at will, so as to ensure the hygiene of the cap 3 and the accessibility of It is convenient and can also prevent the cap 3 from being lost after being unscrewed from the mounting barrel 4 .

After the blood collection is completed and the fixing plug 5 is taken out from the rubber tube 2, the cap 3 is unscrewed from the connecting tube 8, and the unscrewed cap 3 is threadedly connected to the installation cylinder 4 again, so that the cap 3 can be threaded in time. The whole tube body is sealed to avoid the volatilization of the collected blood to generate aerosol phenomenon.

The above descriptions are only the embodiments of the present invention, and the common knowledge such as the well-known specific structures and characteristics in the solutions are not described too much here. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present utility model, several deformations and improvements can also be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the present utility model. The effect of the implementation of the new model and the practicability of the patent.

Claims (10)

1. A disposable peripheral blood collector, comprising a tube body, characterized in that the tube body can produce elastic deformation, and the tube body can be squeezed to generate negative pressure inside, and the top of the tube body can be detachably connected coaxially There is a fixed plug on which a blood collection tube is pierced, one end of the blood collection tube is located in the tube body, the other end of the blood collection tube is located outside the tube and communicated with a suction head, and the top of the tube body is detachably connected with a A cap, the tip and the retaining plug are located within the cap. 2 . The disposable peripheral blood collector according to claim 1 , wherein the tube body comprises a liquid filling cylinder and a rubber tube capable of elastic deformation, and the bottom end of the rubber tube is connected to the top end of the liquid filling cylinder. 3 . Coaxially and fixedly connected, and the rubber tube and the liquid filling cylinder communicate with each other. 3 . The disposable peripheral blood collector according to claim 2 , wherein the lower part of the liquid filling cylinder is tapered. 4 . 4 . The disposable peripheral blood collector according to claim 2 , wherein an installation cylinder is fixedly connected to the upper part of the rubber tube, and the cap is detachably connected to the installation cylinder. 5 . 5 . The disposable peripheral blood collector according to claim 4 , wherein the fixing plug is in an interference fit with the top end of the rubber tube. 6 . 6 . The disposable peripheral blood collector according to claim 4 , wherein the fixing plug is located in the mounting barrel and is coaxially threadedly connected with the mounting barrel. 7 . 7. The disposable peripheral blood collector according to claim 2, wherein a connecting pipe is coaxially connected between the rubber tube and the liquid filling cylinder, and both the rubber tube and the liquid filling cylinder are connected to The inner wall of the connecting pipe is fixedly connected. 8 . The disposable peripheral blood collector according to claim 7 , wherein an outer thread is provided on the outer side of the connecting pipe, and the cap can be threadedly matched with the connecting pipe. 9 . 9 . The disposable peripheral blood collector according to claim 2 , wherein the outer side wall of the liquid filling cylinder is provided with a scale line for identifying the blood collection volume. 10 . 10 . The disposable peripheral blood collector according to claim 2 , wherein the bottom end of the blood collection tube extends into the lower part of the liquid filling cylinder. 11 .

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