Screw type exhaust vein blood taking needle

Abstract

The utility model discloses a screw type exhaust vein blood taking needle which comprises a blood taking needle, a transparent hose, a transparent three-way pipe and a tail needle, the tail end of the blood taking needle is connected with the front end of the transparent hose, the rear end of the transparent hose is connected with the front end of the transparent three-way pipe, the tail needle is installed at the rear end of the transparent three-way pipe, and the tail needle is connected with the transparent three-way pipe. The side end of the transparent three-way pipe is located on the side close to the rear end of the transparent three-way pipe, an exhaust port is formed in the side end of the transparent three-way pipe, the side end of the transparent three-way pipe is connected with a screw cap through threads, and a sealing rubber mat is arranged on the inner top of the screw cap. According to the screw type exhaust vein blood taking needle, gas in the transparent hose can be exhausted through the exhaust port of the transparent three-way pipe, the exhaust port is sealed through the screw cap, and external gas, bacteria, viruses and the like are prevented from entering the pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of blood sampling equipment, in particular to a screw-mouth exhaust type venous blood sampling needle. Background Art

[0002] A venous blood collection needle is a blood collection needle used to collect blood samples during medical examinations; existing venous blood collection needles usually include a blood collection needle, a hose and a tail needle (tail steel needle). The blood collection needle is used to puncture a blood vessel, one end of the hose is connected to the blood collection needle, and the other end is connected to the tail needle. Venous blood collection needles are usually used in conjunction with vacuum blood collection tubes to collect blood samples during medical examinations. In the actual blood collection process, the blood collection needle of the venous blood collection needle punctures the patient's blood vessel to communicate with the blood vessel. A certain amount of negative pressure is preset in the vacuum blood collection tube during the production process. When the tail needle punctures into the vacuum blood collection tube, the blood automatically flows into the vacuum blood collection tube due to the negative pressure in the vacuum blood collection tube. At the same time, various additives are also preset in different models of vacuum blood collection tubes to meet multiple comprehensive clinical blood tests.

[0003] In clinical practice, when medical staff perform venous blood collection, after a successful puncture, there is a lot of residual gas in the hose at the rear end of the blood collection needle. After connecting to the negative pressure venous blood collection tube, the residual gas in the hose will be sucked into the tube, making the tube unable to be filled with blood, affecting the quality of blood collection. Utility Model Content

[0004] To this end, the utility model provides a screw-type exhaust type venous blood collection needle to solve one or more of the above problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A screw-type exhaust-type venous blood collection needle comprises a blood collection needle, a transparent hose, a transparent three-way tube and a tail needle, the tail end of the blood collection needle is connected to the front end of the transparent hose, the rear end of the transparent hose is connected to the front end of the transparent three-way tube, the rear end of the transparent three-way tube is installed with the tail needle, the side end of the transparent three-way tube is located on a side close to the rear end of the transparent three-way tube, the side end of the transparent three-way tube is an exhaust port, a screw cap is threadedly connected to the side end of the transparent three-way tube, and a sealing rubber pad is provided on the inner top of the screw cap.

[0007] Furthermore, a blood collection needle handle is provided on the side of the tail end of the blood collection needle.

[0008] Furthermore, a blood collection needle protective cap is provided on the outer side of the blood collection needle, and the tail end of the blood collection needle protective cap is fixedly sleeved on the tail end of the blood collection needle.

[0009] Furthermore, a tail needle handle is provided at the middle of one side of the transparent three-way pipe opposite to the side end thereof.

[0010] Furthermore, a silicone protective sleeve is sleeved on the outer side of the tail needle, and the front end of the silicone protective sleeve is fixedly sleeved on the rear end of the transparent three-way pipe.

[0011] Furthermore, a tail pin protective cap is provided on the outer side of the silicone protective sleeve, and the front end of the tail pin protective cap is fixedly sleeved on the rear end of the transparent three-way pipe.

[0012] Furthermore, evenly distributed ridges are provided on the circumference of the screw cap, and the direction of the ridges is parallel to the center line of the internal thread of the screw cap.

[0013] The utility model has the following advantages:

[0014] When in use, unscrew the screw cap and open the exhaust port. As blood flows from the blood collection needle through the transparent hose into the transparent three-way tube, the gas in the transparent hose is squeezed to the side end of the transparent three-way tube (i.e., the exhaust port), and finally the gas is discharged from the exhaust port. The blood flow and exhaust conditions can be observed through the transparent hose and the transparent three-way tube. After the gas is exhausted, tighten the screw cap. Under the squeezing action of the inner top of the screw cap and the side end port of the transparent three-way tube, the sealing rubber pad seals the exhaust port to prevent blood from being discharged from the exhaust port, and at the same time prevent outside air as well as bacteria, viruses, etc. from entering the tube from the exhaust port. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0017] Figure 1 A schematic diagram of the structure of a screw-type exhaust-type venous blood collection needle provided in an embodiment of the utility model;

[0018] Figure 2A schematic structural diagram of a transparent three-way tube and a tail needle of a screw-type exhaust-type venous blood collection needle provided in an embodiment of the utility model.

[0019] In the figure: 1-blood collection needle, 11-blood collection needle protective cap, 12-blood collection needle handle, 2-transparent hose, 3-transparent three-way pipe, 31-exhaust port, 32-screw cap, 33-sealing rubber pad, 34-tail needle handle, 4-tail needle, 41-silicone protective cover, 42-tail needle protective cap. DETAILED DESCRIPTION

[0020] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0022] like Figure 1 and 2 As shown, this embodiment provides a screw-type exhaust-type venous blood collection needle, including a blood collection needle 1, a transparent hose 2, a transparent three-way tube 3 and a tail needle 4.

[0023] The tail end of the blood collection needle 1 is connected to the front end of the transparent hose 2, and the rear end of the transparent hose 2 is connected to the front end of the transparent three-way tube 3. The tail needle 4 is installed at the rear end of the transparent three-way tube 3. The side end of the transparent three-way tube 3 is located on the side close to the rear end of the transparent three-way tube 3. The side end of the transparent three-way tube 3 is an exhaust port 31. A screw cap 32 is threadedly connected to the side end of the transparent three-way tube 3, and a sealing rubber pad 33 is provided on the inner top of the screw cap 32.

[0024] When in use, unscrew the screw cap 32 and open the exhaust port 31. As blood flows from the blood collection needle 1 through the transparent hose 2 into the transparent three-way tube 3, the gas in the transparent hose 2 is squeezed to the side end of the transparent three-way tube 3 (i.e., the exhaust port 31), and the gas is finally discharged from the exhaust port 31. The process of gas being exhausted can be observed through the transparent hose 2 and the transparent three-way tube 3. After the gas is exhausted, tighten the screw cap 32. Under the squeezing action of the inner top of the screw cap 32 and the side end port of the transparent three-way tube 3, the sealing gasket 33 seals the exhaust port 31 to prevent blood from being discharged from the exhaust port 31, and at the same time prevent outside air as well as bacteria, viruses, etc. from entering the tube from the exhaust port 31.

[0025] It should be noted that during use, the exhaust port 31 is first used to exhaust air, and after the air is exhausted, the exhaust port 31 is quickly sealed, and then the tail needle 4 is inserted into the vacuum blood collection tube.

[0026] In this embodiment, a blood collection needle handle 12 is provided on the side of the tail end of the blood collection needle 1. The blood collection needle handle 12 makes it easier to operate the blood collection needle 1, such as puncture or needle removal, and it is also easier to fix the blood collection needle 1 on the patient's body.

[0027] In this embodiment, a blood collection needle protective cap 11 is provided on the outer side of the blood collection needle 1, and the tail end of the blood collection needle protective cap 11 is fixedly sleeved on the tail end of the blood collection needle 1. The blood collection needle protective cap 11 is removed during use, and the blood collection needle protective cap 11 is put back on after blood collection is completed, effectively reducing the risk of being stabbed by the blood collection needle 1.

[0028] In this embodiment, a tail needle handle 34 is provided in the middle of one side of the transparent three-way tube 3 opposite to its side end. By providing the tail needle handle 34, it is easier to operate the tail needle 4, such as puncturing the tail needle 4 into the vacuum blood collection tube or pulling the tail needle 4 out of the vacuum blood collection tube.

[0029] In this embodiment, a silicone protective sleeve 41 is sleeved on the outer side of the tail needle 4, and the front end of the silicone protective sleeve 41 is fixedly sleeved on the rear end of the transparent three-way pipe 3. The silicone protective sleeve 41 can shrink and wrap around the outer side of the tail needle 4 to protect the tail needle 4 from contamination and also prevent needle puncture.

[0030] In this embodiment, a tail needle protective cap 42 is provided on the outer side of the silicone protective sleeve 41, and the front end of the tail needle protective cap 42 is fixedly sleeved on the rear end of the transparent three-way pipe 3. The tail needle protective cap 42 has a certain hardness and can play a role in secondary needle stabbing.

[0031] In this embodiment, the circumference of the screw cap 32 is provided with evenly distributed convex ridges, and the direction of the convex ridges is parallel to the center line of the internal thread of the screw cap 32. The provision of the convex ridges increases the friction coefficient, making it convenient for medical staff to tighten or unscrew the screw cap 32.

[0032] In this embodiment, the outer surfaces of the blood collection needle cap 11, the blood collection needle handle 12, the tail needle handle 34, and the tail needle guard 42 are provided with anti-skid patterns or anti-skid bumps. In this way, it can effectively prevent slipping and make it more convenient for medical staff to operate, such as removing the cap, inserting and removing the needle, etc.

[0033] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A screw-type exhaust type venous blood collection needle, characterized in that: It includes a blood collection needle, a transparent hose, a transparent three-way tube and a tail needle, the tail end of the blood collection needle is connected to the front end of the transparent hose, the rear end of the transparent hose is connected to the front end of the transparent three-way tube, the rear end of the transparent three-way tube is installed with the tail needle, the side end of the transparent three-way tube is located on the side close to the rear end of the transparent three-way tube, the side end of the transparent three-way tube is an exhaust port, a screw cap is threadedly connected to the side end of the transparent three-way tube, and a sealing rubber pad is provided on the inner top of the screw cap.

2. The screw-type exhaust type venous blood collection needle according to claim 1, characterized in that: A blood collection needle handle is arranged on the side of the tail end of the blood collection needle.

3. The screw-type exhaust type venous blood collection needle according to claim 1, characterized in that: A blood collection needle protective cap is provided on the outer side of the blood collection needle, and the tail end of the blood collection needle protective cap is fixedly sleeved on the tail end of the blood collection needle.

4. The screw-type exhaust-type venous blood collection needle according to claim 1, characterized in that: A tail needle handle is provided at the middle of one side of the transparent three-way pipe opposite to the side end thereof.

5. The screw-type exhaust-type venous blood collection needle according to claim 1, characterized in that: A silicone protective sleeve is sleeved on the outer side of the tail needle, and the front end of the silicone protective sleeve is fixedly sleeved on the rear end of the transparent three-way pipe.

6. The screw-type exhaust-type venous blood collection needle according to claim 5, characterized in that: A tail needle protective cap is provided on the outer side of the silicone protective sleeve, and the front end of the tail needle protective cap is fixedly sleeved on the rear end of the transparent three-way pipe.

7. The screw-type exhaust-type venous blood collection needle according to claim 1, characterized in that: The circumference of the screw cap is provided with evenly distributed convex ridges, and the direction of the convex ridges is parallel to the center line of the internal thread of the screw cap.

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