Anti-puncture multi-channel blood taking needle

Abstract

The utility model provides an anti-stabbing multichannel blood taking needle which comprises a hose and further comprises a blood taking needle head arranged at one end of the hose and a three-way connector arranged at the other end of the hose, two outlets of the three-way connector are respectively provided with a connecting plug, and the connecting plugs are respectively inserted into a vacuum blood taking tube in a separable mode. One end of the inner cylinder is connected with the hose, the needle core is connected with the other end of the inner cylinder, the telescopic assembly is used for protecting the needle core, the telescopic assembly is arranged on the outer side of the inner cylinder in a sliding mode, a protective cylinder is arranged on the outer side of one end of the inner cylinder, the protective cylinder and the inner cylinder form a containing cavity for containing the telescopic assembly, and the telescopic assembly is detachably connected with the protective cylinder. According to the anti-stabbing multichannel blood taking needle, the needle core is protected through the arrangement of the telescopic assembly, medical workers are prevented from being accidentally injured by the needle core in the operation process, meanwhile, pollution to the needle core is avoided, and the blood taking needle is safer and more reliable to use.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a puncture-proof multi-channel blood collection needle. Background Art

[0002] A lancet is a medical device used to collect venous blood from the human body. It connects to a vacuum blood collection tube to complete the blood collection. With the continuous advancement of medical technology, lancets are gaining increasing importance in clinical practice. Venous blood collection is a high-risk procedure for clinical nurses, who are exposed to bloodborne pathogens. Consequently, nurses experience significant psychological pressure when collecting blood from these patients. Currently, this is the most commonly used standard lancet in clinical practice in my country. Traditional lancets have an exposed puncture tip. During the puncture procedure, nurses may be accidentally injured by the needle due to busy work or careless contact with family members. Inadvertent needlesticks can cause bleeding skin lesions in the victim. Contaminated needlesticks are a significant route of transmission of various viruses and pathogens within hospitals and can easily lead to cross-infection. Furthermore, because the lancet has only a single collection port, nurses must complete one tube and then proceed to collect another, prolonging the blood collection process.

[0003] Existing blood collection needles are prone to accidental punctures during blood collection operations, have inadequate protective designs, and have poor operational safety and reliability. This solution addresses this technical issue. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a puncture-proof multi-channel blood collection needle. Through the setting of the telescopic component, the needle core is protected, which prevents the needle core from accidentally injuring medical staff during operation and also avoids contamination of the needle core, making the use of the blood collection needle safer and more reliable.

[0005] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a stab-proof multi-channel blood collection needle, comprising a hose, a blood collection needle disposed at one end of the hose, and a three-way joint disposed at the other end of the hose, wherein two outlets of the three-way joint are respectively provided with plug connectors, and the plug connectors are respectively detachably inserted into vacuum blood collection tubes;

[0006] The blood collection needle includes an inner tube connected to the hose at one end, a needle core connected to the other end of the inner tube, and a telescopic assembly for protecting the needle core. The telescopic assembly is slidably arranged on the outside of the inner tube. A protective tube is provided on the outside of one end of the inner tube. The protective tube and the inner tube form an accommodating cavity for accommodating the telescopic assembly. The telescopic assembly and the protective tube are detachably connected.

[0007] The telescopic assembly includes an inner sleeve slidably arranged on the outside of one end of the inner tube, and an outer sleeve slidably arranged on the outside of one end of the inner sleeve. A spring is sleeved on the outside of the inner sleeve, one end of the spring is connected to the outer sleeve, and the other end of the spring is abutted against the bottom of the accommodating cavity.

[0008] Two limiting holes are symmetrically provided on the side of the protective tube, and two elastic blocking pieces are correspondingly provided on the side of the outer sleeve. The free ends of the elastic blocking pieces are provided with bosses, and the bosses are detachably embedded in the limiting holes.

[0009] An inner retaining ring 1 is provided on the inner side of one end of the inner sleeve, an outer retaining ring 1 is provided on the outer side of the other end of the inner sleeve, an outer retaining ring 2 is provided on the outer side of one end of the inner tube and is detachably abutted against the inner retaining ring 1, an inner retaining ring 2 is provided on the inner side of one end of the outer sleeve, the spring abuts against one side of the inner retaining ring 2, the outer retaining ring 1 abuts against the other side of the inner retaining ring 2 in a detachable manner, and an inner retaining ring 3 is provided on the inner side of the other end of the outer sleeve to prevent the inner sleeve from falling out.

[0010] Two handles are symmetrically arranged on the outer side of the outer sleeve.

[0011] A one-way valve is provided between the plug connector and the three-way connector.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) The telescopic assembly is used to protect the needle core, which prevents the needle core from accidentally injuring medical staff during operation and also prevents contamination of the needle core, making the use of the blood collection needle safer and more reliable;

[0014] (2) Through the setting of two plug connectors, multi-channel blood collection is realized. Two vacuum blood collection tubes are inserted respectively for multi-channel blood collection. The efficiency of blood collection by the blood collection needle is higher. Through the setting of the three-way connector and the one-way valve, the blood collection needle is more stable, reliable, efficient and fast when drawing blood through the two plug connectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the utility model Figure 1 ;

[0017] Figure 3 This is a schematic cross-sectional view of the utility model Figure 2 ;

[0018] Figure 4 It is a schematic diagram of the needle core of the utility model in the extended state.

[0019] Among them, in the figure: 1. hose; 2. blood collection needle; 21. inner tube; 211. outer retaining ring 2; 22. needle core; 23. telescopic assembly; 231. inner sleeve; 2311. inner retaining ring 1; 2312. outer retaining ring 1; 232. outer sleeve; 2321. elastic retaining plate; 2322. boss; 2323. inner retaining ring 2; 2324. handle; 2325. inner retaining ring 3; 233. spring; 24. protective tube; 241. limiting hole; 25. accommodating chamber; 3. three-way connector; 4. plug connector; 5. one-way valve. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0021] See also Figures 1-4 A stab-proof multi-channel blood collection needle includes a hose 1, a blood collection needle 2 provided at one end of the hose 1, a three-way connector 3 provided at the other end of the hose 1, two outlets of the three-way connector 3 are respectively provided with plug connectors 4, and the plug connectors 4 are respectively detachable and inserted into vacuum blood collection tubes;

[0022] The blood collection needle 2 includes an inner tube 21 connected to the hose 1 at one end, a needle core 22 connected to the other end of the inner tube 21, and a telescopic assembly 23 for protecting the needle core 22. The telescopic assembly 23 is slidably arranged on the outside of the inner tube 21. A protective tube 24 is arranged on the outside of one end of the inner tube 21. The protective tube 24 and the inner tube 21 form an accommodating cavity 25 for accommodating the telescopic assembly 23. The telescopic assembly 23 and the protective tube 24 are detachably connected.

[0023] The telescopic assembly 23 includes an inner sleeve 231 slidably arranged on the outside of one end of the inner tube 21, and an outer sleeve 232 slidably arranged on the outside of one end of the inner sleeve 231. A spring 233 is sleeved on the outside of the inner sleeve 231, one end of the spring 233 is connected to the outer sleeve 232, and the other end of the spring 233 is abutted against the bottom of the accommodating chamber 25.

[0024] Two limiting holes 241 are symmetrically provided on the side of the protective tube 24 , and two elastic blocking pieces 2321 are correspondingly provided on the side of the outer sleeve 232 . The free ends of the elastic blocking pieces 2321 are provided with bosses 2322 , which are detachably embedded in the limiting holes 241 .

[0025] An inner retaining ring 1 2311 is provided on the inner side of one end of the inner sleeve 231, an outer retaining ring 1 2312 is provided on the outer side of the other end of the inner sleeve 231, an outer retaining ring 211 is provided on the outer side of one end of the inner tube 21 which is detachable and abutted against the inner retaining ring 1 2311, an inner retaining ring 2 2323 is provided on the inner side of one end of the outer sleeve 232, the spring 233 abuts against one side of the inner retaining ring 2 2323, the outer retaining ring 1 2312 abuts against the other side of the inner retaining ring 2 2323 in a detachable manner, and an inner retaining ring 3 2325 is provided on the inner side of the other end of the outer sleeve 232 to prevent the inner sleeve 231 from falling out.

[0026] Two handles 2324 are symmetrically provided on the outer side of the outer sleeve 232 .

[0027] A one-way valve 5 is provided between the plug connector 4 and the three-way connector 3 .

[0028] The specific working process and principle of this utility model:

[0029] When using, see Figure 1 、 Figure 2 , take out the blood collection needle from the package. At this time, the needle core 22 is protected by the telescopic assembly 23, and the telescopic assembly 23 is in the extended state. Hold the protective tube 24 with one hand and pinch the handle 2324 with the other hand, thereby driving the outer sleeve 232 to move along the direction of the protective tube 24. The inner retaining ring 2323 in the outer sleeve 232 drives the spring 233 to be compressed, and the inner sleeve 231 also slides downward until the outer sleeve 232 moves to the point where the boss 2322 of the elastic retaining piece 2321 is inserted from the inside out into the limiting hole 241 in the protective tube 24. The entire telescopic assembly 23 is compressed, and the needle core 22 is extended. At this time, the state of the blood collection needle is shown in FIG. Figure 3 、 Figure 4 With the needle core 22 extended, pinch the handle 2324 and insert the needle core 22 into the vein. Then, insert the two plug connectors 4 into the vacuum blood collection tubes respectively. The blood in the vein is subjected to negative pressure and is drawn into the two vacuum blood collection tubes respectively after passing through the hose 1. The one-way valve 5 plays the role of making the medium flow in one direction, which avoids the connection between the two vacuum blood collection tubes on the one hand and the backflow of blood on the other hand.

[0030] By setting the telescopic component 23, the needle core 22 is protected, which prevents the needle core 22 from accidentally injuring medical personnel during operation, and also prevents the needle core 22 from being contaminated, making the use of the blood collection needle safer and more reliable.

[0031] Through the setting of the two plug connectors 4, multi-channel blood collection is achieved. Two vacuum blood collection tubes are inserted respectively for multi-channel blood collection. The efficiency of blood collection by the blood collection needle is higher. Through the setting of the three-way connector 3 and the one-way valve 5, the blood collection needle is more stable, reliable, efficient and fast when drawing blood through the two plug connectors 4.

[0032] The technical features not described in the present invention can be realized by or by adopting the existing technology, and will not be described in detail here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A puncture-proof multi-channel blood collection needle, comprising a hose (1), characterized in that: It also includes a blood collection needle (2) arranged at one end of the hose (1), and a three-way connector (3) arranged at the other end of the hose (1), wherein two outlets of the three-way connector (3) are respectively provided with plug connectors (4), and the plug connectors (4) are respectively detachably inserted into the vacuum blood collection tube; The blood collection needle (2) comprises an inner tube (21) connected to the hose (1) at one end, a needle core (22) connected to the other end of the inner tube (21), and a telescopic component (23) for protecting the needle core (22). The telescopic component (23) is slidably arranged on the outside of the inner tube (21). A protective tube (24) is provided on the outside of one end of the inner tube (21). The protective tube (24) and the inner tube (21) form a housing (25) for housing the telescopic component (23). The telescopic component (23) and the protective tube (24) are detachably connected.

2. The stab-proof multi-channel blood collection needle according to claim 1, characterized in that: The telescopic assembly (23) comprises an inner sleeve (231) slidably arranged on the outside of one end of the inner cylinder (21), and an outer sleeve (232) slidably arranged on the outside of one end of the inner sleeve (231). A spring (233) is sleeved on the outside of the inner sleeve (231), one end of the spring (233) is connected to the outer sleeve (232), and the other end of the spring (233) is abutted against the bottom of the accommodating cavity (25).

3. The stab-proof multi-channel blood collection needle according to claim 2, characterized in that: Two limiting holes (241) are symmetrically provided on the side of the protective tube (24), and two elastic blocking pieces (2321) are correspondingly provided on the side of the outer sleeve (232). A boss (2322) is provided at the free end of the elastic blocking piece (2321), and the boss (2322) is detachably embedded in the limiting hole (241).

4. The stab-proof multi-channel blood collection needle according to claim 2, characterized in that: An inner retaining ring 1 (2311) is provided on the inner side of one end of the inner sleeve (231), an outer retaining ring 1 (2312) is provided on the outer side of the other end of the inner sleeve (231), an outer retaining ring 2 (211) is provided on the outer side of one end of the inner tube (21) and is detachably abutted against the inner retaining ring 1 (2311), an inner retaining ring 2 (2323) is provided on the inner side of one end of the outer sleeve (232), the spring (233) abuts against one side of the inner retaining ring 2 (2323), the outer retaining ring 1 (2312) abuts against the other side of the inner retaining ring 2 (2323) in a detachable manner, and an inner retaining ring 3 (2325) is provided on the inner side of the other end of the outer sleeve (232) to prevent the inner sleeve (231) from falling out.

5. The stab-proof multi-channel blood collection needle according to claim 4, characterized in that: Two handles (2324) are symmetrically provided on the outer side of the outer sleeve (232).

6. The stab-proof multi-channel blood collection needle according to claim 1, characterized in that: A one-way valve (5) is provided between the plug connector (4) and the three-way connector (3).

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