CN220801012U - A split type venous indwelling blood sampling device - Google Patents

Abstract

The utility model discloses a split-type venous indwelling blood sampling device, comprising two vacuum blood sampling tubes, which are movably connected with blood sampling needles in an inserted manner in a sequential order, and the vacuum blood sampling tubes are both connected with the indwelling needle through the blood sampling needle, and the vacuum blood sampling tube is connected with the indwelling needle through the blood sampling needle to suck the tube sealing liquid in the indwelling needle, and after sucking the tube sealing liquid, another vacuum blood sampling tube is connected with the indwelling needle through the blood sampling needle to collect blood; the utility model adopts a split-type structure, and uses two vacuum blood sampling tubes to directly collect venous blood from the existing indwelling needle. In this way, the blood sample is directly sent into the vacuum blood sampling tube during blood drawing, and the contamination of the blood sample or the occurrence of hemolysis during repeated blood drawing is effectively avoided.

Description

A split type venous indwelling blood sampling device

Technical Field

The utility model relates to the technical field of blood sampling instruments, in particular to a split-type venous indwelling blood sampling device suitable for inpatients who need high-frequency blood sampling.

Background technique

During hospitalization, patients need frequent infusions to achieve the purpose of fluid replacement or treatment, and blood is drawn regularly to check various indicators so as to adjust the corresponding treatment plan. Frequent venous blood sampling or infusion will increase the number of times the patient is stabbed. In order to solve the above problems, indwelling needles are generally used.

Intravenous catheters generally include positive pressure catheters and heparin cap catheters. The two different types of catheters are suitable for different scenarios according to their advantages and disadvantages. In actual applications, in order to avoid catheter-related bacterial infection, the catheter needs to be sealed and flushed before and after each infusion. When sealing the catheter, a sealing fluid is generally required.

In order to draw blood from the intravenous catheter, it is generally first directly connected or punctured with a syringe (different connection methods are selected depending on the type of intravenous catheter, such as a positive pressure catheter that does not require a needle to be directly connected, while a heparin cap catheter requires puncture) to extract the sealing liquid, and then the sealing liquid is discharged and the blood is drawn from the catheter through a syringe and then injected into a test tube. In this process, on the one hand, multiple operations need to be performed through the syringe, and the whole process is cumbersome and inconvenient for medical staff to operate quickly. In addition, there is a risk of blood exposure during the blood collection process. Therefore, the chance of contamination is increased during blood collection. In severe cases, it may also cause sample hemolysis, which may damage blood cells.

Utility Model Content

The utility model aims to provide a split-type venous indwelling blood sampling device to solve the technical problems that the blood sampling method relying on the venous indwelling needle in the prior art still has the inconvenience of operation and affects the blood sampling sample.

In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

A split-type venous indwelling blood sampling device comprises two vacuum blood sampling tubes, which are movably connected with blood sampling needles in a sequential manner in an inserted manner, and the vacuum blood sampling tubes are both connected with the indwelling needle through the blood sampling needles, and the vacuum blood sampling tubes are connected with the indwelling needle through the blood sampling needles to suck the sealing liquid in the indwelling needle, and after sucking the sealing liquid, another vacuum blood sampling tube is connected with the indwelling needle through the blood sampling needle to collect blood;

in:

The vacuum blood collection tubes are all provided with sealing caps, the sealing caps contain a butyl rubber plug layer that isolates the vacuum blood collection tubes from the outside, and the surface of the butyl rubber plug layer is provided with a coating.

Furthermore, the surface of the vacuum blood collection tube is provided with scales for marking.

Furthermore, the blood collection needle comprises a tube plug puncture needle, and the tube plug puncture needle is connected to a puncture needle through a sleeve or directly.

Furthermore, the puncture needle is connected to a needle handle.

Furthermore, the puncture needle is provided with a puncture needle sheath.

Furthermore, the blood collection needle comprises a tube plug puncture needle, and the tube plug puncture needle is connected to a connector through a sleeve or directly.

Furthermore, a needle seat is connected to the tube plug puncture needle.

Furthermore, the tube plug puncture needle is provided with a tube plug puncture needle sheath.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model adopts a split structure and utilizes two vacuum blood collection tubes to directly collect venous blood from an existing indwelling needle. During the operation, it is only necessary to use the two vacuum blood collection tubes to extract the tube sealing liquid and the blood sample in turn. The blood collection device does not need to extract the tube sealing liquid through a syringe, and does not need to extract the blood sample through a syringe and introduce it into a test tube. During the blood drawing process, since the blood directly enters the vacuum blood collection tube, the contamination of the blood sample or the occurrence of hemolysis during repeated extraction is effectively avoided.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

FIG1 is a schematic diagram of the structure of Embodiment 1 of the present utility model;

FIG2 is another schematic diagram of the structure of Embodiment 1 of the present utility model;

FIG3 is a schematic diagram of a structure of Embodiment 2 of the present utility model;

FIG. 4 is another schematic structural diagram of Embodiment 2 of the present utility model.

The numbers in the figure represent the following:

1- Vacuum blood collection tube; 2- Blood collection needle;

101-cap; 102-scale;

201-puncture needle; 202-tube plug puncture needle; 203-needle handle; 204-casing tube; 205-needle seat; 206-puncture needle sheath; 207-tube plug puncture needle sheath.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

As shown in Figures 1 to 4, the utility model provides a split-type venous indwelling blood sampling device, including a vacuum blood collection tube 1 and a blood collection needle 2 movably installed on the vacuum blood collection tube 1 in an inserted manner, and the vacuum blood collection tube 1 is connected to the indwelling needle through the blood collection needle 2.

In the present invention, since the sealing liquid is sucked by the vacuum blood collection tube 1, two vacuum blood collection tubes 1 need to be set up to suck the sealing liquid first in a certain order, and then draw blood normally. That is, the specific operation process is:

One of the vacuum blood collection tubes 1 is connected to the indwelling needle through the blood collection needle 2 to suck out the sealing liquid in the indwelling needle. After sucking out the sealing liquid, another vacuum blood collection tube 1 (which can be connected to various negative pressure blood collection tubes) is connected to the indwelling needle through the blood collection needle 2 to collect blood.

In the foregoing, it should be noted that the first vacuum blood collection tube is used to aspirate the sealing liquid, and the second vacuum blood collection tube in the foregoing is specifically a variety of negative pressure blood collection tubes. For the sake of ease of description, they are collectively referred to as vacuum blood collection tubes in the foregoing. In this embodiment, different test tubes are used according to different needs.

The vacuum blood collection tube 1 is provided with a sealing cap 101, which is provided with a butyl rubber plug layer, which isolates the vacuum blood collection tube from the outside world. The butyl rubber plug layer has good internal cleanliness, chemical stability, air tightness and biological performance.

The surface of the butyl rubber stopper layer is provided with a coating, which can effectively reduce the absorption, adsorption, leaching and penetration between the butyl rubber stopper layer and the sampled object, improve the long-term stability of the sampled object, and reduce the increase in the number of insoluble particles in the sampled liquid caused by direct contact between the blood sample and the butyl rubber stopper layer.

Among them, vacuum blood collection tubes of different capacities are selected according to the lengths of different venous indwelling needles. At the same time, for the convenience of observation, the scale (ml) is marked on the tube body of the vacuum blood collection tube.

In a specific embodiment of the utility model, the vacuum blood collection tube 1 is used to extract the sealing liquid or blood from the venous indwelling needle by using the blood collection needle 2, so as to reduce the possibility of the blood sample being affected by external factors, and at the same time make the sampling process more convenient and quick.

In the prior art, venous catheters generally include positive pressure connector catheters and heparin cap connector catheters. Positive pressure connector catheters can be directly connected without puncture, while heparin cap connector catheters are generally connected through puncture. Therefore, based on these two types of venous catheters, different types of blood collection needles are required to achieve connection, thereby realizing normal blood collection operations.

In order to better illustrate the specific operation mode, the following will be described in combination with different embodiments, and each embodiment also includes the difference between the presence or absence of a sleeve.

Embodiment 1:

For the heparin cap connector indwelling needle, the blood collection needle needs to be punctured. Therefore, for this type of indwelling needle, as shown in Figures 1 and 2, the blood collection needle 2 includes a puncture needle 201 and a tube plug puncture needle 202, and the tube plug puncture needle 202 is connected to the puncture needle 201 through a sleeve 204 or directly.

The tube plug puncture needle 202 directly punctures the vacuum blood collection tube 1, while the puncture needle 201 directly punctures the heparin cap to communicate with the intravenous indwelling needle.

When the tube plug puncture needle 202 is connected to the puncture needle 201 through the sleeve 204, the puncture needle 201 is connected to the tube plug puncture needle 202 through the needle handle 203 and the sleeve 204 arranged in sequence, and a needle seat 205 is arranged at the connection between the tube plug puncture needle 202 and the sleeve 204.

During the blood collection process, the puncture needle 201 is inserted into the heparin cap of the intravenous catheter, and the tube plug puncture needle 202 is inserted into the vacuum blood collection tube 1. The two are connected by a sleeve 204. The pressure difference formed by the negative pressure in the vacuum blood collection tube 1 is used to extract the sealing liquid or blood sample. In order to facilitate puncture, a needle handle 203 is provided on the puncture needle 201, and a needle seat 205 is provided on the tube plug puncture needle 202.

When the tube plug puncture needle 202 is directly connected to the puncture needle 201 without passing through the sleeve 204, during the blood collection process, the puncture needle 201 is inserted into the heparin cap of the intravenous catheter, and the tube plug puncture needle 202 is inserted into the vacuum blood collection tube 1. The two are directly connected to utilize the pressure difference formed by the negative pressure in the vacuum blood collection tube 1 to extract the tube sealing liquid or blood sample. Similarly, in order to facilitate puncture, a needle handle 203 is provided on the puncture needle 201, and a needle seat 205 is provided on the tube plug puncture needle 202.

In addition, the puncture needle sheath 206 provided on the puncture needle 101 can protect the puncture needle 101 and can also keep the puncture needle 101 in a sterile environment before the first use.

Embodiment 2:

For a positive pressure connector indwelling needle, the blood collection needle does not need to be punctured when connected to the indwelling needle. Therefore, for this type of indwelling needle, as shown in Figures 3 and 4, the blood collection needle 2 includes a tube plug puncture needle 202, and the tube plug puncture needle 202 is connected to a connector through a sleeve 204 or directly.

The tube plug puncture needle 202 directly punctures the vacuum blood collection tube 1, and the connector is directly connected to the venous indwelling needle.

When the tube plug puncture needle 202 is connected to the connector through the sleeve 204,

During the blood collection process, the tube plug puncture needle 202 is connected to the positive pressure connector on the venous catheter through a connector, and is inserted into the vacuum blood collection tube 1. The two are connected by a sleeve 204, and the pressure difference formed by the negative pressure in the vacuum blood collection tube 1 is used to extract the sealing liquid or blood sample. In order to facilitate puncture, a needle seat 205 is provided on the tube plug puncture needle 202.

When the tube plug puncture needle 202 is directly connected to the connector without passing through the sleeve 204, during the blood collection process, it is connected to the positive pressure connector on the venous catheter through the connector, and the tube plug puncture needle 202 is inserted into the vacuum blood collection tube 1. The two are directly connected to utilize the pressure difference formed by the negative pressure in the vacuum blood collection tube 1 to extract the tube sealing liquid or blood sample. Similarly, in order to facilitate puncture, a needle seat 205 is provided on the tube plug puncture needle 202.

For the above two embodiments, the tube plug puncture needle sheath 207 provided on the tube plug puncture needle 105 can protect the tube plug puncture needle 105 and can also keep the tube plug puncture needle 105 in a sterile environment before the first use.

In addition, the puncture needle sheath 206 and the tube plug puncture needle sheath 207 can also respectively wrap the puncture needle 101 and the tube plug puncture needle 105 after use, so as to prevent the liquid on the needle tip from dripping, and also avoid the hidden danger of puncture after becoming medical waste.

From the above two embodiments, it can be seen that in view of the defects of easy contamination, easy hemolysis and complicated operation in the prior art of using syringes for blood collection, the utility model adopts different blood collection needles according to different indwelling needles, so that no matter which venous indwelling needle is used, the entire blood collection process is in a closed state with a high degree of sterility. Moreover, since it is directly connected to the vacuum blood collection tube and the vacuum negative pressure of the vacuum blood collection tube is directly used for suction, there is no need for manual suction and injection of blood samples during the blood collection process, thereby avoiding possible hemolysis. In addition, during the entire process, medical staff only need to connect the blood collection needle to extract the sealing liquid and collect the blood sample. The entire operation is simple and convenient, which improves the actual work efficiency.

The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims (8)

1. The split type venous indwelling blood taking device is characterized by comprising two vacuum blood taking tubes (1), wherein blood taking needles (2) are movably connected to the two vacuum blood taking tubes (1) in an inserting mode sequentially according to the sequence, the vacuum blood taking tubes (1) are communicated with indwelling needles through the blood taking needles (2), the vacuum blood taking tubes (1) are communicated with the indwelling needles through the blood taking needles (2) to suck tube sealing liquid in the indwelling needles, and after the tube sealing liquid is sucked, the other vacuum blood taking tubes (1) are communicated with the indwelling needles through the blood taking needles (2) to take blood;

Wherein:

The vacuum blood collection tube is characterized in that sealing caps (101) are arranged on the vacuum blood collection tubes (1), plug layers for blocking the vacuum blood collection tubes from being communicated with the outside are arranged in the sealing caps (101), and covering films are arranged on the surfaces of the plug layers.

2. The split venous indwelling blood collection device according to claim 1, wherein a scale (102) for quantitative identification is provided on the surface of the vacuum blood collection tube (1).

3. The split venous indwelling blood collection device according to claim 1, wherein the blood collection needle (2) comprises a stopcock puncture needle (202), and the stopcock puncture needle (202) is connected with a puncture needle (201) through a cannula (204) or directly.

4. A split venous indwelling blood collection device according to claim 3, in which the puncture needle (201) is connected to a handle (203).

5. A split venous indwelling blood collection device according to claim 3 or 4, in which the puncture needle (201) is provided with a puncture needle sheath (206).

6. The split venous indwelling blood collection device according to claim 1, wherein the blood collection needle (2) comprises a stopcock needle (202), and a connector is connected to the stopcock needle (202) either through a cannula (204) or directly.

7. A split venous indwelling blood collection device as claimed in claim 3 or claim 6, in which a needle hub (205) is attached to the stopcock (202).

8. A split venous indwelling blood collection device according to claim 3 or 6, in which the stopcock (202) is provided with a stopcock needle sheath (207).