CN209966395U - Safe blood sampler - Google Patents

Abstract

The utility model discloses a safety blood sampler, comprising an indwelling needle, the indwelling needle is connected with a connecting tube, and the other end of the connecting tube is connected with a medical three-way valve, the safety blood sampler includes a vacuum blood collection tube and a blood collection tube Needle, one end of the blood collection needle is a puncture needle, and the other end is a connecting head, the connecting head is connected with the interface of the medical three-way valve, and a hose is arranged between the two ends of the blood collecting needle, and the hose is connected with the puncture needle and the connecting head , the puncture needle is used to pierce the nozzle of the vacuum blood collection tube to collect blood. In the present application, the puncture needle at one end of the venous blood collection needle is replaced by a connector, so that it is not easy to cause harm to patients or medical staff during use, and the probability of accidental injury is reduced. It can draw blood through a vacuum blood collection tube, which is more stable and convenient than the traditional use of a syringe.

Description

A safety blood sampler

technical field

The utility model relates to the field of medical equipment, in particular to a safety blood sampler.

Background technique

The blood collection device is generally composed of a blood collection needle and a blood collection tube. In the prior art, the blood collection tube generally uses a vacuum blood collection tube to collect blood from the patient, and the blood collection needle generally uses a venous blood collection needle. Both ends of the blood collection needle are puncture needles. , one end is used to pierce the nozzle of the vacuum blood collection tube, and the other end is used to pierce the human skin and blood vessels for blood collection.

For patients in the intensive care unit, blood tests need to be performed multiple times a day. If a venous blood collection needle is used every time, it is easy to cause harm to the patient's body. For blood collection, for indwelling needles, the usual blood collection method is to connect a medical three-way valve to the back of the indwelling needle, and then use a syringe to collect blood from the patient. Although this method of blood collection will not cause two problems to the patient due to the venous blood collection needle. However, when the blood is drawn with a syringe, the force cannot be uniform, so it is also possible that the quality of the blood sample cannot be well guaranteed due to the uneven force. And the general venous blood collection needle, because both ends are puncture needles, for some people who are not very skilled, there is a certain danger, so when using it, you need to be very careful.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a safety blood sampler.

For achieving the above object, the technical scheme of the present utility model is:

A safety blood sampler includes an indwelling needle, the indwelling needle is connected with a connecting tube, and the other end of the connecting tube is connected with a medical three-way valve, and also includes a vacuum blood collection tube and a blood collection needle, the blood collection needle is provided at one end. The puncture needle, the connecting head arranged at the other end, and the hose connecting the puncturing needle and the connecting head, the connecting head is connected with the interface of the medical three-way valve, and the puncturing needle is used to pierce the nozzle of the vacuum blood collection tube (2) to carry out Blood collection.

Further, the connecting head is a cylinder, and one end of the cylinder is sealed with the hose.

Further, the diameter of one end of the cylinder away from the hose is smaller than the inner diameter of the medical three-way valve interface, and the diameter of the end of the cylinder close to the hose is larger than the inner diameter of the medical three-way valve interface. Through this arrangement, the cylinder can be inserted into the interface of the medical three-way valve, and the thicker side and the thinner side can effectively seal the space, so that the vacuum blood collection tube can exert its effect to collect blood from the patient.

Further, the outer side of the cylinder is provided with a threaded cover for threaded connection with the medical three-way valve interface. The threaded cover is provided, which can stably connect the cylinder to the medical three-way valve, without the need for nurses to fix it, so as to ensure the airtight connection between the connector and the medical three-way valve.

Further, the surface of the threaded cover is provided with anti-skid lines.

Further, the threaded cover is rotatably connected with the cylinder.

Compared with the prior art, the utility model has the following advantages:

The utility model replaces the puncture needle at one end of the venous blood collection needle by the connecting head, so that it is not easy to cause harm to patients or medical staff during use, and the probability of accidental injury is reduced, and the connecting head can be connected with the medical three-way valve, thereby making Blood collection can be done through a vacuum blood collection tube, which is more stable and convenient than the traditional use of a syringe.

Description of drawings

Fig. 1 is the overall structure schematic diagram of this safety blood sampler;

Figure 2 is a schematic diagram of the internal structure of the connector part of the safety blood sampler;

Description of reference numerals: 11, indwelling needle; 12, connecting tube; 13, medical three-way valve; 2, vacuum blood collection tube; 3, blood collection needle; 31, puncture needle; 32, hose; 33, connecting head; 331, thread Cover; 332, convex edge; 333, non-slip texture.

Detailed ways

In order to make the above objects, features and advantages of the present utility model more clearly understood, the present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Example

As shown in FIG. 1 , a safety blood sampler includes an indwelling needle 11 , the indwelling needle 11 is connected with a connecting tube 12 , the other end of the connecting tube 12 is connected with a medical three-way valve 13 , and also includes a vacuum blood collection tube 2 And the blood collection needle 3, the blood collection needle 3 includes a lancet 31 arranged at one end, a connecting head 33 arranged at the other end, and a hose 32 connecting the lancet 31 and the connecting head 33, the connecting head 33 and the medical three-way valve 13 The puncture needle 31 is used to pierce the nozzle of the vacuum blood collection tube 2 (2) for blood collection.

As shown in FIG. 2 , the connecting head 33 is a cylinder, and one end of the cylinder is sealedly connected with the hose 32 , so as to ensure the tightness of the blood collection needle 3 . The diameter of the end of the cylinder away from the hose 32 is smaller than the inner diameter of the port of the medical three-way valve 13 , and the diameter of the end of the cylinder close to the hose 32 is larger than the inner diameter of the port of the medical three-way valve 13 . Through this arrangement, the cylinder can be inserted into the interface of the medical three-way valve 13, and the setting of one side thick and one side thin can also effectively seal the space thereof, so that the vacuum blood collection tube 2 can exert its effect on the patient. Blood collection.

In addition, the outer side of the cylinder is provided with a threaded cover 331 for threaded connection with the interface of the medical three-way valve 13, the thread of the threaded cover 331 is an internal thread, and the end of the threaded cover 331 close to the hose 32 is rotated and connected to the surface of the cylinder, so that the circular The barrel and the screw cap 331 can rotate relative to each other without displacement. There is a protruding edge 332 protruding from the surface of the cylinder, and the protruding edge 332 is embedded in the screw cap 331 so as to realize the screw connection. The surface of the screw cap 331 is provided with anti-slip textures 333 .

Since two of the three joints of the medical three-way valve 13 have external threads, the cylinder can be stably connected to the medical three-way valve 13 by adding a threaded cover 331 with an internal thread, without the need for a nurse It is fixed by hand to ensure the airtight connection between the connector 33 and the medical three-way valve 13 .

When in use, it is only necessary to first connect the connector 33 to the medical three-way valve 13, screw the threaded cover 331, so that the cylinder and the interface of the three-way valve are tightly pressed to keep it airtight, and then the medical three-way valve 13 After the corresponding channel is connected, the lancet 31 is inserted into the vacuum blood collection tube 2 to start blood collection. After blood collection, the medical three-way valve 13 is used to close the channel, and the connector 33 is removed to complete the entire blood collection process. The whole process is simple, the operation is convenient, and compared with the traditional venous blood collection needle 3, it is safer, and it is not easy to accidentally injure patients or nurses and cause infection.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and its purpose is to enable those of ordinary skill in the art to understand the content of the present invention and implement it accordingly, and cannot limit the protection scope of the present invention with this. . All equivalent changes or modifications made according to the essence of the content of the present invention should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a safe blood sampler, is including keeping somewhere syringe needle (11), it is connected with connecting pipe (12) to keep somewhere syringe needle (11), the connecting pipe (12) other end is connected with medical three-way valve (13), its characterized in that: still include vacuum test tube (2) and blood taking needle (3), blood taking needle (3) are including setting up in felting needle (31) of one end, setting up at connector (33) of the other end and hose (32) of connecting felting needle (31) and connector (33), connector (33) and the interface connection of medical three-way valve (13), the mouth of pipe that felting needle (31) are used for impaling vacuum test tube (2) is taken a blood sample.

2. The safety blood sampler according to claim 1, wherein: the connector (33) is a cylinder, and one end of the cylinder is hermetically connected with the hose (32).

3. The safety blood sampler according to claim 2, wherein: the diameter of one end of the cylinder, which is far away from the hose (32), is smaller than the inner diameter of the interface of the medical three-way valve (13), and the diameter of one end of the cylinder, which is close to the hose (32), is larger than the inner diameter of the interface of the medical three-way valve (13).

4. The safety blood sampler according to claim 2, wherein: and a threaded cover (331) which is in threaded connection with the interface of the medical three-way valve (13) is arranged on the outer side of the cylinder.

5. The safety blood sampler according to claim 4, wherein: the surface of the threaded cover (331) is provided with anti-skid grains (333).

6. The safety blood sampler according to claim 4, wherein: the threaded cap (331) is rotatably connected to the cylinder.

Images