Internal arteriovenous fistula puncture needle with safe blood sampling device

Abstract

The utility model provides an internal arteriovenous fistula puncture needle with a safe blood sampling device, which comprises a blood sampling hose, a protective tube is arranged at the front end of the blood sampling hose, chutes are arranged on two sides of the protective tube, a push wing is connected in the chutes in a sliding manner, elastic check curtains are arranged on two sides of the push wing, a rotating shaft is arranged at the front end of the push wing, and the rotating shaft is connected with the protective tube. And a pulling frame is mounted at the front end of the rotating shaft. According to the protective device, the two sets of protective covers and the elastic check curtains on the two sides of the protective tube are used for protecting the needle head making contact with the outside, occupational exposure is prevented, and the safety of medical staff is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to an arteriovenous fistula puncture needle with a safe blood sampling device. Background Art

[0002] Fistula puncture needles are mainly used for hemodialysis treatment. Before dialysis treatment, empty needle puncture is required to draw blood from the patient for testing before the patient uses anticoagulants.

[0003] Hemodialysis is a treatment method that uses diffusion, convection, and adsorption through a semipermeable membrane to purify the blood of patients with severe renal impairment. During hemodialysis, lancet assemblies are primarily used to collect blood samples from patients, providing physicians with physiological indicators and a scientific basis for specific treatment plans. Traditional lancet assemblies consist of a single needle and deliver blood to the end of a blood collection tube. Blood is then drawn from the tube using a syringe and injected into a negative pressure tube, where it is stored.

[0004] Therefore, the traditional blood collection needle assembly has a complex structure and is inconvenient to use, and requires the use of a syringe to collect blood. Blood collection from patients with blood-borne infections such as hepatitis B, hepatitis C, and syphilis can easily cause occupational exposure and blood-borne infection risks for blood collectors, which is insufficient.

[0005] In view of this, in view of the above shortcomings, it is very necessary to design an arteriovenous fistula puncture needle with a safe blood collection device in the present invention. Utility Model Content

[0006] In order to comprehensively solve the above problems, especially to address the deficiencies in the existing technology, the utility model provides an arteriovenous fistula puncture needle with a safe blood collection device to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model adopts the following technical means:

[0008] The device includes a blood collection hose, a protective tube is provided at the front end of the blood collection hose, slide grooves are provided on both sides of the protective tube, push wings are slidably connected in the slide grooves, elastic curtains are provided on both sides of the push wings, a rotating shaft is provided at the front end of the push wings, and a trigger frame is installed at the front end of the rotating shaft.

[0009] Preferably, the front end of the protection tube is provided with a first protective cover, the rear end of the blood collection hose is provided with a blood collection end, and the front end of the blood collection end is provided with a second protective cover.

[0010] Preferably, a puncture needle is sleeved on the push wing, and two sets of sleeve clamp ends are installed on the bottom of the protection tube.

[0011] Preferably, the middle section of the blood collection hose is clamped with a flow-stop clamp.

[0012] Preferably, a retaining frame is fixedly installed at the front end of the push wing, and the retaining frame is connected to the rotating shaft through a return spring.

[0013] Preferably, a plug-in bracket is installed at the bottom of the pull rack, and a magnetic adsorption plate is provided at the front end of the plug-in bracket.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention protects the needle in contact with the outside world through two sets of protective covers and elastic curtains on both sides of the protective tube, thereby preventing occupational exposure and improving the safety of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 It is a partial schematic diagram of the front end of the utility model;

[0018] Figure 4 This is the front end assembly drawing of the utility model;

[0019] Figure 5 It is a partial sectional view of the propeller wing of the utility model.

[0020] In the picture:

[0021] 1. Blood collection hose; 2. Protective tube; 3. First protective cover; 4. Puncture needle; 5. Push wing; 6. Rotating shaft; 7. Pull frame; 8. Socket clamp end; 9. Stop clamp; 10. Blood collection end; 11. Second protective cover; 12. Return spring; 21. Slide groove; 51. Elastic curtain; 52. Baffle frame; 71. Plug rack; 72. Magnetic adsorption plate. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Example 1:

[0024] As attached Figure 1 To the attached Figure 4As shown, the utility model provides an arteriovenous fistula puncture needle with a safe blood collection device, including a blood collection hose 1, a protective tube 2 is provided at the front end of the blood collection hose 1, slide grooves 21 are provided on both sides of the protective tube 2, push wings 5 ​​are slidably connected in the slide grooves 21, elastic curtains 51 are provided on both sides of the push wings 5, a rotating shaft 6 is provided at the front end of the rotating shaft 6, a pull frame 7 is installed at the front end of the protective tube 2, a first protective cover 3 is provided at the front end of the protective tube 2, a blood collection end 10 is provided at the rear end of the blood collection hose 1, and a second protective cover 11 is provided at the front end of the blood collection end 10; a puncture needle 4 is sleeved on the push wing 5, and two groups of sleeve card ends 8 are installed at the bottom of the protective tube 2.

[0025] In this embodiment, the push wings 5 ​​sleeved on both sides of the puncture needle 4 are pushed forward to move the puncture needle 4 out of the protective tube 2. When the puncture needle 4 is moved out of the protective tube 2, the elastic curtain 51 at the front end of the push wings 5 ​​is retracted.

[0026] Furthermore, the elastic barrier curtain 51 at the rear end of the push wing 5 is unfolded, so that the elastic barrier curtain 51 blocks the slide groove 21 to prevent the puncture needle 4 from directly contacting the outside.

[0027] Example 2:

[0028] As attached Figure 2 To the attached Figure 5 As shown, in the above embodiment, specifically, the middle section of the blood collection hose 1 is clamped with a flow stop clamp 9; the front end of the push wing 5 is fixedly installed with a retaining frame 52, and the retaining frame 52 is connected to the rotating shaft 6 through a reset spring 12; the bottom of the pull frame 7 is installed with a plug-in frame 71, and the front end of the plug-in frame 71 is provided with a magnetic adsorption plate 72.

[0029] In this embodiment, the bracket 7 is flipped along the rotating shaft 6 , the inserting bracket 71 is inserted into the socket card end 8 , and the magnetic adsorption plate 72 at the front end of the inserting bracket 71 adsorbs and fixes the bracket 7 .

[0030] Furthermore, when the pull bracket 7 is moved out, the inserting bracket 71 is flipped out from the clamping end 8 , and the rotating shaft 6 returns to its original position under the action of the return spring 12 inside.

[0031] How it works

[0032] When the present invention is in use, the push wings 5 ​​sleeved on both sides of the puncture needle 4 are pushed forward to move the puncture needle 4 out of the protective tube 2. When the puncture needle 4 is moved out of the protective tube 2, the elastic barrier curtain 51 at the front end of the push wings 5 ​​is contracted, and the elastic barrier curtain 51 at the rear end of the push wings 5 ​​is unfolded, so that the elastic barrier curtain 51 blocks the slide groove 21 to prevent the puncture needle 4 from directly contacting the outside.

[0033] After pushing the push wing 5 to the corresponding position, the bracket 7 is flipped along the rotating shaft 6, and the inserting frame 71 is inserted into the socket card end 8, and the magnetic adsorption plate 72 at the front end of the inserting frame 71 adsorbs and fixes the bracket 7. Similarly, when removing the bracket 7, the inserting frame 71 is flipped out of the card end 8. At this time, the rotating shaft 6 returns to its original position under the action of the return spring 12 inside it.

[0034] Utilizing the technical solution described in the present invention, or those skilled in the art designing similar technical solutions inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the scope of protection of the present invention.

Claims

1. An arteriovenous fistula puncture needle with a safe blood sampling device, comprising a blood sampling hose (1), characterized in that: The front end of the blood collection hose (1) is provided with a protective tube (2), both sides of the protective tube (2) are provided with slide grooves (21), a push wing (5) is slidably connected in the slide groove (21), both sides of the push wing (5) are provided with elastic curtains (51), the front end of the push wing (5) is provided with a rotating shaft (6), and the front end of the rotating shaft (6) is installed with a trigger frame (7).

2. The arteriovenous fistula puncture needle with a safe blood collection device as claimed in claim 1, characterized in that: The front end of the protection tube (2) is provided with a first protective cover (3), the rear end of the blood collection hose (1) is provided with a blood collection end (10), and the front end of the blood collection end (10) is provided with a second protective cover (11).

3. The arteriovenous fistula puncture needle with a safe blood collection device as claimed in claim 1, characterized in that: The push wing (5) is sleeved with a puncture needle (4), and the bottom of the protection tube (2) is equipped with two sets of sleeve clamping ends (8).

4. The arteriovenous fistula puncture needle with a safe blood collection device as claimed in claim 1, characterized in that: The middle section of the blood sampling hose (1) is clamped with a flow-stopping clamp (9).

5. The arteriovenous fistula puncture needle with a safe blood collection device as claimed in claim 1, characterized in that: A retaining frame (52) is fixedly mounted on the front end of the push wing (5), and the retaining frame (52) is connected to the rotating shaft (6) via a return spring (12).

6. The arteriovenous fistula puncture needle with a safe blood collection device as claimed in claim 1, characterized in that: A plug-in frame (71) is installed at the bottom of the pull frame (7), and a magnetic adsorption plate (72) is provided at the front end of the plug-in frame (71).

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